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Reactive extraction for intensifying 2-ethylhexyl acrylate synthesis using deep eutectic solvent [Im:2PTSA] 被引量:2
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作者 Ruizhuan Wang Hao Qin +3 位作者 Jingwen Wang Hongye Cheng Lifang Chen Zhiwen Qi 《Green Energy & Environment》 SCIE CSCD 2021年第3期405-412,共8页
2-Ethylhexyl acrylate(2-EHA)is one of the most widely used acrylates in the polymer industry,which is synthesized via Fisher esterification that is limited by chemical equilibrium.To intensify the esterification proce... 2-Ethylhexyl acrylate(2-EHA)is one of the most widely used acrylates in the polymer industry,which is synthesized via Fisher esterification that is limited by chemical equilibrium.To intensify the esterification process,in this work,reactive extraction concept is proposed,with halogen-free deep eutectic solvent(DES[Im:2PTSA])as dual solvent-catalyst that consists of imidazole(Im)and p-toluenesulfonamide(PTSA).The bifunctional effects of the DES[Im:2PTSA]are evaluated by thermodynamic analysis and experimental study.Favorable phase splitting is verified byσ-potential analysis predicted by COSMO-RS theory,combined with experiments,and the optimal acid-to-alcohol molar ratio is set to 1.2.The esterification kinetics is then experimentally determined and fitted using the molar-based and activity-based pseudo-homogeneous(PH)models,respectively.The activity-based PH model,that considers the bifunctional roles of the DES,proves to be more accurate with small RMSD of 0.0344.The stability of DES after recycling is validated to further confirm the industrial prospects of DES[Im:2PTSA]in 2-EHA production. 展开更多
关键词 2-Ethylhexyl acrylate Deep eutectic solvent Reactive extraction Esterification kinetics COSMO-RS
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微纳米α-Al_(2)O_(3)改性丙烯酸树脂-有机硅烷复合钝化对不锈钢硬度及耐蚀性的影响
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作者 伏建康 马常帅 +3 位作者 冉长荣 王运厚 郭太雄 张千峰 《材料保护》 CAS CSCD 2024年第5期76-82,共7页
通过微纳米α-Al_(2)O_(3)改性丙烯酸树脂-有机硅烷复合而成的无铬钝化液作用于不锈钢基板表面,探究其在不锈钢表面形成的微纳米α-Al_(2)O_(3)钝化膜对不锈钢表层性能的影响。通过表面硬度测试、扫描电镜测试,分析基板表面特征。同时,... 通过微纳米α-Al_(2)O_(3)改性丙烯酸树脂-有机硅烷复合而成的无铬钝化液作用于不锈钢基板表面,探究其在不锈钢表面形成的微纳米α-Al_(2)O_(3)钝化膜对不锈钢表层性能的影响。通过表面硬度测试、扫描电镜测试,分析基板表面特征。同时,通过涂层附着力测试和电化学测试,探究涂层的粘结强度和基板的耐蚀性能。结果表明,经微纳米α-Al_(2)O_(3)改性的无铬钝化液使不锈钢板材的耐蚀性显著提升,同时对其表面硬度的提升效果达到80%。 展开更多
关键词 微纳米α-Al_(2)O_(3) 无铬钝化 改性丙烯酸树脂-有机硅烷 不锈钢基板 硬度 耐蚀性
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混凝土喷涂N-TiO_(2)/SiO_(2)硅丙光催化涂层自清洁性能研究
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作者 史王芳 张永胜 《涂料工业》 CAS CSCD 北大核心 2024年第11期76-82,共7页
为了开发一种具有良好光催化活性和稳定性的混凝土喷涂光催化硅丙涂料。以稀HNO3预处理纳米SiO_(2)和钛酸四丁酯为原料,无水乙醇作为溶剂制备了N-TiO_(2)/SiO_(2)光催化材料。并将NTiO_(2)/SiO_(2)光催化材料掺杂到硅丙乳液中制备了光... 为了开发一种具有良好光催化活性和稳定性的混凝土喷涂光催化硅丙涂料。以稀HNO3预处理纳米SiO_(2)和钛酸四丁酯为原料,无水乙醇作为溶剂制备了N-TiO_(2)/SiO_(2)光催化材料。并将NTiO_(2)/SiO_(2)光催化材料掺杂到硅丙乳液中制备了光催化涂料,均匀喷涂到混凝土净浆块表面形成均一的涂层。采用X射线衍射仪(XRD)、傅立叶变换红外光谱仪(FT-IR)、紫外-可见漫反射光谱仪(DRS)和稳态荧光光谱仪(PL)等对光催化材料进行了表征。结果表明:N-TiO_(2)/SiO_(2)光催化材料的光催化活性比纯相TiO_(2)的优异,全光谱照射30 min内甲基橙降解率达到了99.75%,这得益于非金属N的掺杂拓宽了光谱吸收范围,实现了高效的光电子-空穴分离。涂层表现出优异的光催化活性和稳定性,全光谱照射10 h内甲基橙的降解率达到了94.78%,喷涂光催化涂料的混凝土净浆块置于自然环境下日晒雨淋35 d内甲基橙的降解率为90.25%,光催化涂层表现出良好的稳定性。N-TiO_(2)/SiO_(2)的掺杂虽然影响了光催化涂层的黏结强度和吸水性,但仍达到了聚合物水泥防水涂料黏结强度Ⅲ型要求和外墙涂料吸水性Ⅲ级要求,可以应用于室内外建筑工程项目。 展开更多
关键词 N-TiO_(2)/SiO_(2) 光催化材料 混凝土 甲基橙 硅丙乳液 喷涂
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Synthesis and Crystal Structure of (Z)-Methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)methyl]phenyl}acrylate 被引量:1
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作者 ZHOU Zhong-Zhen YOU Wen-Wei ZHAO Pei-Liang 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第10期1574-1578,共5页
The title compound,(Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)-methyl]phenyl}acrylate,was synthesized and determined by X-ray single-crystal diffraction.The crystal belongs to the triclinic system,spac... The title compound,(Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)-methyl]phenyl}acrylate,was synthesized and determined by X-ray single-crystal diffraction.The crystal belongs to the triclinic system,space group P1 with a=8.0157(8),b=12.5748(13),c=13.3768(14)Å,α=64.770(2),β=75.720(2),γ=89.784(2)°,μ=0.085 mm^(-1),Mr=442.49,V=1174.1(2)Å3,Z=2,Dc=1.252 g/cm^(3),F(000)=468,T=294(2)K,R=0.0603 and wR=0.1498 for 2644 observed reflections with I〉2σ(I).X-ray diffraction analysis reveals that the single crystal contains strong non-classical hydrogen bonds.The preliminary bioassay showed that the title compound exhibits inhibitory activity against the Pseudoperoniospora cubensis and Rhizoctonia solani at the test concentration of 200 mg/L. 展开更多
关键词 synthesis crystal structure (Z)-methyl-3-methoxy-2-{2-[(4-(E-3-p-tolylacryloyl)phenoxy)methyl]phenyl}acrylate
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Synthesis and Performances of Poly(2-ethylhexyl acrylate-co-acrylic acid) Used for Warp Sizing
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作者 祝志峰 高林林 +1 位作者 王其 乔志勇 《Journal of Donghua University(English Edition)》 EI CAS 2011年第5期511-515,共5页
A series of poly ( 2-ethylhexyl acrylate-co-acrylic acid ) s ( P (2-EHA-co-AA) )s with different mole contents of 2-ethylhexyl acrylate ( 2-EHA ) were synthesized through free radical copolymerization in ethan... A series of poly ( 2-ethylhexyl acrylate-co-acrylic acid ) s ( P (2-EHA-co-AA) )s with different mole contents of 2-ethylhexyl acrylate ( 2-EHA ) were synthesized through free radical copolymerization in ethanol for investigating the influences of copolymer composition upon the performance such as apparent viscosity, film behaviors, and adhesion to fibers for warp sizing. The content of 2-EHA was varied from 80 % to 40 %. The adhesion was estimated by measuring tensile strength and work-to-break of impregnated roving. The film behaviors were evaluated in terms of breaking strength, breaking elongation, work-to-break, and flex- fatigue resistance. It was observed that the viscosity, adhesion, and film behaviors of the copolymers strongly depended on the content of 2-EHA. Excessively increasing or decreasing the content of 2-EHA units incorporated into the copolymeric chains reduces the serviceability of P(2-EHA-co-AA) in warp sizing. The adhesion and film behaviors of the copolymcr reach their maximal values at mole content of 50 % simultaneously. Therefore, the copolymer used as sizing agent should be synthesized under equal mole of 2-EHA and AA in monomer formulation. 展开更多
关键词 warp sizing agents 2-ethylhexyl acrylate copolymer copolymer composition ADHESION film behavior
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Synthesis of Ethyl 3-Fluoroalkyl-3-Halo Acrylate With CH_2N_2
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作者 Qiao Sheng HU and Chang Ming HU(Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,354 Fengling Lu,Shanghai,200032) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第8期673-676,共4页
When ethyl 3-fluoroalkyl-3-haloacrylate was treated with excess CH2N2,1-methyl-3-ethoxycarbonyl-4-fluoroalkylpyr azoles(3)and 1-methyl-5-ethoxycarbonyl-4-fluoroalkylpyrazoles(4)were obtained with a ratio of 90-95:10-5... When ethyl 3-fluoroalkyl-3-haloacrylate was treated with excess CH2N2,1-methyl-3-ethoxycarbonyl-4-fluoroalkylpyr azoles(3)and 1-methyl-5-ethoxycarbonyl-4-fluoroalkylpyrazoles(4)were obtained with a ratio of 90-95:10-5 in good yield. 展开更多
关键词 CH HALO MHz Synthesis of Ethyl 3-Fluoroalkyl-3-Halo acrylate With CH2N2 PPM
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Swelling Properties of New Hydrogels Based on the Dimethyl Amino Ethyl Acrylate Methyl Chloride Quaternary Salt with Acrylic Acid and 2-Methylene Butane-1,4-Dioic Acid Monomers in Aqueous Solutions
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作者 Issa Katime Eduardo Mendizábal 《Materials Sciences and Applications》 2010年第3期162-167,共6页
Hydrogels of dimethylaminoethyl acrylate methyl chloride quaternary salt (Q9) have been synthesized with different monomer ratio by copolymerization of this poorly studied monomer either with acrylic acid or with 2-me... Hydrogels of dimethylaminoethyl acrylate methyl chloride quaternary salt (Q9) have been synthesized with different monomer ratio by copolymerization of this poorly studied monomer either with acrylic acid or with 2-methylene bu-tane-1,4-dioic acid. Hydrogel swelling was measured as a function of the composition of the hydrogel and of the crosslinking agent ratio. High values of swelling have been obtained at very high crosslinking values (【14 wt %) and the equilibrium swelling was reached at very low time (less than 15 minutes). The swelling isotherms consisted of a steep initial portion and then levelled off as asymptotically to the equilibrium swelling limit. The experimental data suggest clearly that the swelling process obeys second-order kinetics. According to this, the kinetics rate constant and the equilibrium water content were determined at different comonomer composition and crosslinker concentration. The calculated kinetic constants ranged from 0.48 to 3.76 &#215;10-2 min-1 for poly (acrylic acid-co-Q9) hydrogels and from 0.68 to 4.0 &#215;10-2 min-1 for poly (2-methylene butane-1,4-dioic acid-co-Q9) hydrogels depending on the hydrogels composition. The diffusion process was evaluated for each hydrogel showing a non-Fickian type diffusion. In all cases was observed a considerable increase in diffusion coefficient as Q9 content increases. 展开更多
关键词 DIMETHYL Amino Ethyl acrylate Methyl Chloride QUATERNARY Salt 2-methylene butane-1 4-Dioic ACID acrylic ACID SWELLING Diffusion Coefficients Kinetic Order
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XRD Pattern of Liquid Crystal Monomer Acrylate That Conjugated with Cholesterol and p-Hydroxyphenyl-2-Methyl Butanoic
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作者 Afrlzal Muhammad Hikam +1 位作者 Bambang Soegiyono Asep Riswoko 《Journal of Chemistry and Chemical Engineering》 2012年第12期1051-1055,共5页
It was successfully synthesized liquid crystal monomer acrylate that conjugated with two mesogens were cholesterol and p-hydroxyphenyl-2-methyl Butanoat which called MA (monomer cholesteryl acrylate) and monomer (S... It was successfully synthesized liquid crystal monomer acrylate that conjugated with two mesogens were cholesterol and p-hydroxyphenyl-2-methyl Butanoat which called MA (monomer cholesteryl acrylate) and monomer (S)-(+)-4-(2-Methyl butanoat-l-butyloxy) phenyl 4-[1-(propenoyloxy) butyloxy] benzoate (MB). Two monomers were characterized by DSC (differential scanning calorimetry), POM (polarization optical microscopy) and XRD (X-ray diffraction). Mesophase temperatures of MA and MB are 81.28 ~C and 54.36~C, respectively. Textures analysis by POM shows that MA was oily streak and MB was schlieren. XRD pattern shows the strongest three peaks of MA at room temperature which are (20, deg): 2.7153, 5.2992 and 18.8500. The Strongest three peaks of MB at room temperature are (20, deg): 9.1726, 9.7707 and 12.5389. XRD pattern of MA and MB at mesophase and above mesophase temperature that each peaks disappear. 展开更多
关键词 Liquid crystal cholesteryl acrylate p-hydroxyphenyl-2-methyl butanoat.
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Cooperative catalytic effects between the penta-coordinated Al and Al_(2)O_(3)in Al_(2)O_(3)-AlPO_(4)for aldol condensation of methyl acetate with formaldehyde to methyl acrylate
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作者 Zhenyu Wu Zengxi Li Chunshan Li 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第12期172-183,共12页
The bare amorphous Al_(2)O_(3)-AlPO_(4)and Cs/Al_(2)O_(3)-AlPO_(4)catalysts were developed for the aldol condensation of methyl acetate with formaldehyde to methyl acrylate.The structure and property of catalyst were ... The bare amorphous Al_(2)O_(3)-AlPO_(4)and Cs/Al_(2)O_(3)-AlPO_(4)catalysts were developed for the aldol condensation of methyl acetate with formaldehyde to methyl acrylate.The structure and property of catalyst were characterized by XRD,XPS,BET,Pyridine-IR,FT-IR,^(27)Al-MASNMR,NH_(3)-/CO_(2)-TPD and SEM.The correlation between structural features and acid-base properties was established,and the loading effect of the cesium species was investigated.Due to cooperative catalytic effects between the penta-coordinated Al and Al_(2)O_(3),the weak-Ⅱacid and medium acid site densities and the product selectivity were improved.While the basic site densities of these catalysts were almost in proportion to the conversion of methyl acetate.The loaded Cs could form new basic sites and change the distribution of acid sites which further enhance the catalytic performance.As a result,the 10Cs/8AlP was proved to be an optimal catalyst with the yield and selectivity of 21.2%and 85%for methyl acrylate respectively.During the reaction,a deactivation behavior was observed on 10Cs/8AlP catalyst due to the carbon deposition,however,it could be regenerated by thermal treatment in the air atmosphere at 400℃. 展开更多
关键词 Methyl acrylate(MA) Aldol condensation Al_(2)O_(3)-AlPO_(4) Penta-coordinated aluminum Cooperative effects
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STRUCTURE OF 1-BROMOMETHYL-7, 7-DIMETHYLBICYCLO[2.2.1]HEPT-2-YL ACRYLATE AND THE PROPERTIES OF ITS POLYMER
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作者 Xin Ru JIA Ming Qian LI +1 位作者 Ji Ping SHAO Shuo Jian JIANG 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第10期833-836,共4页
In this paper, the structure of 1-bromomethyl-7,7-dimethyl btcyclo[2.2.1]hept-2-yl acrylate has been studied by X-ray diffraction, and the relation between the molecular structure and the properties of polymerization ... In this paper, the structure of 1-bromomethyl-7,7-dimethyl btcyclo[2.2.1]hept-2-yl acrylate has been studied by X-ray diffraction, and the relation between the molecular structure and the properties of polymerization and its polymer have been discussed. 展开更多
关键词 Poly STRUCTURE OF 1-BROMOMETHYL-7 DIMETHYLBICYCLO[2.2.1]HEPT-2-YL acrylate AND THE PROPERTIES OF ITS POLYMER ITS
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SYNTHESES OF A NOVEL POLYFLUOROALKYL SUBSTITUTED 2-HYDROXYETHYL ACRYLATE AND ITS COPOLYMERS
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作者 杨进 黄维垣 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1997年第4期362-367,共6页
Polyfluoroalkyl substituted 2-hydroxyethyl acrylate 6 was synthesized in six steps usingglycerol as a starting material. A preliminary investigation has been taken on the synthesisand characterization of copolymers of... Polyfluoroalkyl substituted 2-hydroxyethyl acrylate 6 was synthesized in six steps usingglycerol as a starting material. A preliminary investigation has been taken on the synthesisand characterization of copolymers of 6 and 2-hydroxyethyl methacrylate. 展开更多
关键词 3-O-polyfluoroalkyl glycerol 1-acrylate Synthesis COPOLYMERIZATION 2-hydroxythyl methacrylate
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量子点修饰g-C_(3)N_(4)@Fe_(2)O_(3)纳米杂化材料的制备及在水性环氧-丙烯酸酯乳液中的应用
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作者 陈细芳 肖玉玲 +1 位作者 刘如佳 张凯 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2024年第4期61-71,共11页
水性环氧-丙烯酸酯乳液(WEP)因污染小、附着力好、耐候性好被广泛应用于涂料领域,但其不尽如意的耐腐蚀性大大限制了其在防腐涂料领域的应用。文中采用煅烧法制备了g-C_(3)N_(4)@Fe_(2)O_(3)纳米杂化材料,微波法制备了柠檬酸碳量子点溶... 水性环氧-丙烯酸酯乳液(WEP)因污染小、附着力好、耐候性好被广泛应用于涂料领域,但其不尽如意的耐腐蚀性大大限制了其在防腐涂料领域的应用。文中采用煅烧法制备了g-C_(3)N_(4)@Fe_(2)O_(3)纳米杂化材料,微波法制备了柠檬酸碳量子点溶液,通过傅里叶变换红外光谱、X射线衍射分析、X射线光电子能谱仪和透射电子显微镜分析了g-C_(3)N_(4)@Fe_(2)O_(3)杂化粒子的结构和形态,采用扫描电子显微镜观察了复合涂层的形貌,通过电化学阻抗谱和盐雾实验研究了WEP、g-C_(3)N_(4)@Fe_(2)O_(3)/WEP、经量子点修饰的g-C_(3)N_(4)@Fe_(2)O_(3)/WEP涂层的耐腐性能。结果表明,Fe_(2)O_(3)粒子成功负载到了g-C_(3)N_(4)纳米片上,经柠檬酸量子点修饰后,g-C_(3)N_(4)@Fe_(2)O_(3)在WEP中具有良好的分散性,经柠檬酸量子点修饰的g-C_(3)N_(4)@Fe_(2)O_(3)/WEP乳液涂膜在质量分数3.5%NaCl溶液中浸泡1 d时阻抗高达1.5×10^(10)Ω·cm^(2),较纯WEP乳液涂膜高出2个数量级;浸泡7 d后,复合涂层阻抗值仍高达8.7×10^(9)Ω·cm^(2);盐雾168 h后复合涂层表面锈蚀较少。 展开更多
关键词 g-C_(3)N_(4)@Fe_(2)O_(3)纳米杂化材料 量子点 水性环氧-丙烯酸酯乳液 耐腐蚀性
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改性纳米SiO_(2)-苯丙乳液混凝土复合防护涂层的制备及性能研究
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作者 余茂林 邓安仲 +2 位作者 沈海玉 罗盛 杨艺斌 《混凝土与水泥制品》 2024年第11期1-6,共6页
采用硅烷偶联剂KH560对纳米SiO_(2)进行接枝改性,通过傅里叶红外变换光谱、热重分析及微观形貌分析等方法研究了KH560对纳米SiO_(2)改性机理的影响,探究了改性SiO_(2)-苯丙乳液复合涂层中掺入一定质量分数的改性纳米SiO_(2)对混凝土抗... 采用硅烷偶联剂KH560对纳米SiO_(2)进行接枝改性,通过傅里叶红外变换光谱、热重分析及微观形貌分析等方法研究了KH560对纳米SiO_(2)改性机理的影响,探究了改性SiO_(2)-苯丙乳液复合涂层中掺入一定质量分数的改性纳米SiO_(2)对混凝土抗硫酸盐溶液冻融性能的影响,并分析了改性纳米SiO_(2)对苯丙乳液涂层的增强机理。结果表明:采用KH560改性后,纳米SiO_(2)颗粒的团聚状态得到了显著改善,热稳定性提高;当改性纳米SiO_(2)的质量分数为4%时,C4复合涂层对混凝土的防护作用最好,此时混凝土抗硫酸盐溶液冻融等级由F100~F150提升到F300以上;300次硫酸盐溶液冻融循环后,混凝土的质量损失率仅为0.35%,相对动弹性模量为96.2%,此时混凝土内部结构并未发生明显破坏。 展开更多
关键词 硅烷偶联剂 纳米SiO_(2) 苯丙乳液 表面改性 混凝土复合涂层混凝土 冻融循环
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玉米芯半纤维素基水凝胶对Pb^(2+)吸附性能和机理 被引量:5
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作者 梁志 《化工新型材料》 CAS CSCD 北大核心 2023年第2期202-206,共5页
以玉米芯半纤维素(木聚糖)为原料,以丙烯酸(AA)、N-异丙基丙烯酰胺(NIPAm)为功能单体,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,在光引发剂安息香二甲醚(DMPA)紫外引发下,通过接枝聚合,制备水凝胶吸附剂,利用红外光谱(FT-IR)、扫描电镜(SEM... 以玉米芯半纤维素(木聚糖)为原料,以丙烯酸(AA)、N-异丙基丙烯酰胺(NIPAm)为功能单体,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,在光引发剂安息香二甲醚(DMPA)紫外引发下,通过接枝聚合,制备水凝胶吸附剂,利用红外光谱(FT-IR)、扫描电镜(SEM)分析水凝胶吸附金属离子前后的结构,并研究pH、吸附剂用量、温度、金属离子初始浓度、吸附时间对Pb^(2+)吸附性能的影响。结果表明:吸附平衡时间约为300min,对Pb^(2+)的最大吸附容量为1095mg/g。水凝胶对金属离子的吸附为离子交换机制,吸附行为符合动力学准二级模型和Langmuir方程,半纤维素基水凝胶对重金属废水具有显著的吸附效果,可以作为重金属废水处理用的生物质吸附剂。 展开更多
关键词 水凝胶 N-异丙基丙烯酰胺 丙烯酸 铅离子 生物质吸附剂
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Preparation and Surface Properties of Silicon-Containing Waterborne Polyurethane Functionalized with Fluorine-Containing Acrylate and Micro-Nano Silica 被引量:6
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作者 蔡棋 HUANG Jiemin +1 位作者 翁睿 LIU Shichen 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第1期233-241,共9页
In order to prepare hydrophobic waterborne polyurethane coatings with better performances, the silicon-containing waterborne polyurethane(SiWPU) with functional chain extender hydroxyethyl acrylate(HEA) was prepar... In order to prepare hydrophobic waterborne polyurethane coatings with better performances, the silicon-containing waterborne polyurethane(SiWPU) with functional chain extender hydroxyethyl acrylate(HEA) was prepared first, and then a series of silicon&fluorine-containing polyurethane/acrylate(FSiPUA) emulsions were obtained with flourine containing acrylic monomer by seed emulsion polymerization, introducing micro-nano SiO2 into FSiPUA emulsion to make the final hybrid emulsion. The properties of Si WPU, FSiPUA and SiO2/FSiPUA were investigated by fourier transform infrared spectra(FTIR), transmission electron microscope(TEM), Scanning Electron Microscope(SEM) and some other analytical methods. The results revealed that FSiPUA emulsion particles possessed composite core-shell structure and FSiPUA films with suitable ratio performed better than Si WPU films in hardness, water resistance and solvent resistance. The SiO2/FSiPUA films with micro-nano dual roughness structure showed a water contact angle of 136° with good resistance to acid and alkali. 展开更多
关键词 waterborne polyurethane acrylIC SiO2 surface properties
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The Application of Polytetrafluoroethylene (PTFE) Fiber Grafted Acrylic Acid as a Cation Exchanger for Removing Cu^(12) 被引量:1
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作者 ZhengPuZHANG ZhiPengWANG +1 位作者 BaoGuiZHANG YanGengZHANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第6期609-610,共2页
The polytetrafluoroethylene fiber grafted acrylic acid was used as a cation exchanger. The exchange capacity of the cation fiber is 3.06 mmol/g. The maximum Cu2+ adsorption capacity is 107.48 mg/g. It could be deso... The polytetrafluoroethylene fiber grafted acrylic acid was used as a cation exchanger. The exchange capacity of the cation fiber is 3.06 mmol/g. The maximum Cu2+ adsorption capacity is 107.48 mg/g. It could be desorbed completely by 1mol/L HCl. 展开更多
关键词 Polytetrafluoroethylene fiber acrylic acid grafting Cu2+ adsorption.
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TiO_(2)/有机硅溶胶改性含氟苯丙乳液的制备及性能表征 被引量:1
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作者 史书源 安秋凤 邱甲云 《材料导报》 EI CAS CSCD 北大核心 2023年第8期234-241,共8页
为改善含氟苯丙乳液的疏水性、热稳定性及力学性能,以钛酸丁酯(TBT)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为原料,通过溶胶-凝胶法制备出TiO_(2)/有机硅溶胶(TS),并将其与丙烯酸丁酯(BA)、苯乙烯(ST)、甲基丙烯酸十二氟庚酯(G04... 为改善含氟苯丙乳液的疏水性、热稳定性及力学性能,以钛酸丁酯(TBT)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为原料,通过溶胶-凝胶法制备出TiO_(2)/有机硅溶胶(TS),并将其与丙烯酸丁酯(BA)、苯乙烯(ST)、甲基丙烯酸十二氟庚酯(G04)及其他丙烯酸类功能单体作为主要原料,通过半连续加料法及种子乳液聚合,制备出一种TiO_(2)/有机硅溶胶改性的含氟苯丙乳液(TS-BHSAG)。探讨了不同TS含量对乳液转化率的影响,利用FTIR、纳米粒度仪、稳定性分析仪、XPS、XRD、SEM、AFM、TGA表征研究了乳液及乳胶膜的结构组成及应用性能。结果表明,当TS含量逐渐增加时,乳液转化率及稳定性呈持续下降趋势;随着TS含量增加,乳液平均粒径从55.58 nm增至106.16 nm;FTIR及XPS结果显示,TS-BHSAG乳胶膜中形成了Si-O-Si、Si-O-Ti、CF2键,证实TS被初步合成,且其与G04一起被引入聚合物中;XRD结果表明,TS是以无定形相分散于丙烯酸树脂基体中;通过SEM与AFM观察到,TS纳米粒子在乳胶膜表面构成峰状粗糙结构,增强了乳液的疏水性能;TGA结果表明,在热失重为10%及50%时,TS-BHSAG的热分解温度分别为380.59℃、415.39℃,在600℃时,乳胶膜的残余质量分数从4.78%增加到8.56%;当TS添加量为3%时,TS-BHSAG乳胶膜的接触角为121°,附着力为1级,耐冲击性能为50 cm,硬度为2H,吸水率为6.1%。 展开更多
关键词 TiO_(2)/有机硅改性 乳液聚合 含氟苯丙乳液 疏水性 热稳定性
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EFFECT OF TEMPERATURE ON COPOLYMERIZATION PARAMETERS OF HYDROXYETHYL ACRYLATE AND METHYL METHACRYLATE
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作者 李欣欣 印啸敏 +2 位作者 吴平平 韩哲文 朱清仁 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1998年第1期25-31,共7页
The copolymerization of 2-hydroxyethyl acrylate (HEA, M//1) and methyl methacrylate (MMA, M//2) in cyclohexanone was studied. The multiple experiments of solution copolymerization with low conversion were carried out... The copolymerization of 2-hydroxyethyl acrylate (HEA, M//1) and methyl methacrylate (MMA, M//2) in cyclohexanone was studied. The multiple experiments of solution copolymerization with low conversion were carried out at two sensitive composition feed points at 60, 80, 100, 120 and 140 degree C, respectively. The composition of the copolymers was analyzed by **1H-NMR. The reactivity ratios which were estimated by the Error-in-Variable Method (EVM) of Mayo-Lewis equation were found to be r//1 equals 0.328, r//2 equals 1.781 for 60 degree C; 0.375, 1.709 for 80 degree C; 0.406, 1.654 for 100 degree C; 0.439, 1.540 for 120 degree C and 0.455, 1.400 for 140 degree C, and the 95% joint confidence intervals of the reactivity ratios were also determined. According to r//1 and r//2, Arrhenius relations and the activity energy difference between the homo- and cross-propagation were calculated. (Author abstract) 12 Refs. 展开更多
关键词 reactivity ratio 2-Hydroxyethyl acrylate methyl methacrylate COPOLYMERIZATION copolymer composition
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氯醚树脂/纳米SiO_(2)改性丙烯酸酯复合乳液的制备及其在水性油墨中的应用研究 被引量:1
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作者 张天祥 裴克梅 《中国胶粘剂》 CAS 2023年第11期28-33,共6页
以氯醚树脂和乙烯基纳米SiO_(2)为共聚单体,采用半间歇种子乳液聚合方法制备了氯醚树脂/纳米SiO_(2)改性丙烯酸酯复合乳液,并制备了水性油墨,测定或表征了其性能。研究结果表明:(1)成功制备了复合乳液;(2)SiO_(2)粒子在乳胶膜中分散较... 以氯醚树脂和乙烯基纳米SiO_(2)为共聚单体,采用半间歇种子乳液聚合方法制备了氯醚树脂/纳米SiO_(2)改性丙烯酸酯复合乳液,并制备了水性油墨,测定或表征了其性能。研究结果表明:(1)成功制备了复合乳液;(2)SiO_(2)粒子在乳胶膜中分散较为均匀,氯醚树脂/纳米SiO_(2)改性丙烯酸酯复合乳液性能稳定,与同类产品E0503丙烯酸酯乳液相比,复合乳液的固含率更高,黏度更小,固化后薄膜的柔韧性更强,在应用方面具有一定的优势;(3)将复合乳液与色浆按照10∶4的比例配制水性油墨,墨层性能可以达到行业内平均水平。与同类产品E0503丙烯酸酯乳液配制的水性油墨相比,复合乳液水性油墨墨层在附着牢度和抗光老化性能方面具有明显优势。 展开更多
关键词 氯醚树脂 纳米SiO_(2) 丙烯酸酯乳液 水性油墨
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丙烯酸2-乙基己酯与丙烯酸羟乙酯共聚合成高吸油性树脂的研究 被引量:24
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作者 纪顺俊 戴蔚荃 +2 位作者 狄海生 朱秀林 路建美 《高校化学工程学报》 EI CAS CSCD 北大核心 2002年第4期446-449,共4页
以丙烯酸2-乙基己酯和丙烯酸羟乙酯为单体进行共聚合,聚合体系中并不加入交联剂,采用悬浮聚合的方法制得自交联型高吸油性树脂,测定了树脂的吸油性能。系统地研究了影响树脂吸油性能的诸多因素,包括单体配比、引发剂用量、油水相比等。... 以丙烯酸2-乙基己酯和丙烯酸羟乙酯为单体进行共聚合,聚合体系中并不加入交联剂,采用悬浮聚合的方法制得自交联型高吸油性树脂,测定了树脂的吸油性能。系统地研究了影响树脂吸油性能的诸多因素,包括单体配比、引发剂用量、油水相比等。结果表明:树脂的吸油倍率随着单体配比、引发剂用量、油水相比的变化而出现一最佳值,而且树脂对不同油品的吸收能力并不相同,其吸油倍率依次为:甲苯>苯>环己烷>煤油,吸收甲苯可达21.5gg-1, 吸收苯可达20.5gg-1,对不同油品的吸收能力不同这一现象从理论上进行了解释。同时,还测定了树脂的吸油速率和热失重曲线,结果说明树脂在吸油4小时后达到饱和吸收,在370℃以下不分解,说明该树脂在常温下稳定,是一种理想的工业用废液的处理剂。 展开更多
关键词 共聚合成 吸油性树脂 悬浮聚合 自交联 丙烯酸2-乙基己酯 丙烯酸羟乙酯 废水处理
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