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路面裂缝修复中改性聚氯氨酯与SBS改性沥青物理性能研究 被引量:4
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作者 高尊 《城市道桥与防洪》 2021年第2期186-188,M0017,共4页
为了探究路面裂缝修复中改性聚氯氨酯与SBS改性沥青物理性能,通过疲劳试验与抗渗试验对两种材料进行对比分析,结果表明;改性聚氯氨酯与SBS改性沥青两种材料作为路面裂缝的补料均可满足路面的路用性能需求。改性聚氯氨酯材料在修复路面... 为了探究路面裂缝修复中改性聚氯氨酯与SBS改性沥青物理性能,通过疲劳试验与抗渗试验对两种材料进行对比分析,结果表明;改性聚氯氨酯与SBS改性沥青两种材料作为路面裂缝的补料均可满足路面的路用性能需求。改性聚氯氨酯材料在修复路面裂缝后的疲劳期相对于SBS改性沥青材料的要短,并且SBS改性沥青材料的抗疲劳性能更强。对于抗渗能力,两种材料的抗渗等级一致。改性聚氯氨酯材料的耐水压力与渗水压力相对于SBS改性沥青材料更大。 展开更多
关键词 改性聚氯氨酯 SBS改性沥青 疲劳试验 抗渗试验
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二(对氯苄基)锡双吗啉氨荒酸酯和二(对氯苄基)氯化锡N,N-二乙基氨荒酸酯的合成、表征及晶体结构 被引量:7
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作者 尹汉东 王勇 王传华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第8期926-931,共6页
利用二(对氯苄基)二氯化锡和吗啉氨荒酸钠、N,N-二乙基氨荒酸钠反应,合成了二(对氯苄基)锡双吗啉氨荒酸酯C24H28Cl2N2O2S4Sn (Mr = 694.31) 1和二(对氯苄基)氯化锡N,N-二乙基氨荒酸酯C19H22Cl3NS2Sn (Mr = 553.54) 2。用X-射线单晶衍射... 利用二(对氯苄基)二氯化锡和吗啉氨荒酸钠、N,N-二乙基氨荒酸钠反应,合成了二(对氯苄基)锡双吗啉氨荒酸酯C24H28Cl2N2O2S4Sn (Mr = 694.31) 1和二(对氯苄基)氯化锡N,N-二乙基氨荒酸酯C19H22Cl3NS2Sn (Mr = 553.54) 2。用X-射线单晶衍射测定了这2个化合物的晶体结构,测试结果表明:化合物1的晶体为单斜晶系,空间群C2/c, a = 21.998(9), b = 6.469(3), c = 20.204(8) ,β= 94.444(6)o , Z = 4, V = 2866.3(19) 3, Dc = 1.609 g/cm3, μ(MoKα) = 1.394 mm-1, F(000) = 1400,S = 0.955, (?)max = 0.000,R = 0.0389, wR = 0.0817。化合物2的晶体为单斜晶系,空间群P21/c, a = 13.088(10), b = 9.304(7), c = 19.593(14) ,β = 107.158(10)o, Z = 4, V = 2280(3) 3, Dc = 1.613 g/cm3,μ(MoKα) = 1.660 mm-1, F(000) = 1104,S = 1.010, (?)max = 0.001,R = 0.0290, wR = 0.0651。在化合物1中,锡原子呈六配位畸变八面体构型, 化合物2的锡原子则是五配位畸变三角双锥构型。 展开更多
关键词 二(对苄基)锡双吗啉荒酸 二(对苄基)化锡N N-二乙基荒酸 合成 晶体结构 红外光谱
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二(对氯苄基)锡双吗啉氨荒酸酯和二(对氯苄基)氯化锡N,N-二乙基氨荒酸酯的合成、表征及晶体结构 被引量:2
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作者 尹汉东 王勇 王传华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第6期561-566,共6页
利用二(对氯苄基)二氯化锡和吗啉氨荒酸钠、N, N-二乙基氨荒酸钠反应, 合成了二(对氯苄基)锡双吗啉氨荒酸酯C24H28Cl2N2O2S4Sn (Mr = 694.31) 1和二(对氯苄基)氯化锡N, N-二乙基氨荒酸酯C19H22Cl3N2S4Sn (Mr = 553.54) 2。用X-射线单晶... 利用二(对氯苄基)二氯化锡和吗啉氨荒酸钠、N, N-二乙基氨荒酸钠反应, 合成了二(对氯苄基)锡双吗啉氨荒酸酯C24H28Cl2N2O2S4Sn (Mr = 694.31) 1和二(对氯苄基)氯化锡N, N-二乙基氨荒酸酯C19H22Cl3N2S4Sn (Mr = 553.54) 2。用X-射线单晶衍射测定了这2个化合物的晶体结构, 测试结果表明:化合物1的晶体为单斜晶系, 空间群C2/c, a = 21.998(9), b = 6.469(3), c = 20.204(8) ,β= 94.444(6)o, Z = 4, V = 2866.3(19) 3, Dc = 1.609 g/cm3, m(MoKa) = 1.394 mm-1, F(000) = 1400, S = 0.955, (D/s)max = 0.000, R = 0.0389, wR = 0.0817。化合物2的晶体为单斜晶系, 空间群P21/c, a = 13.088(10), b = 9.304(7), c = 19.593(14) ,β=107.158(10)o, Z = 4, V = 2280(3) 3, Dc = 1.613 g/cm3, m(MoKa) = 1.660 mm-1, F(000) = 1104, S = 1.010, (D/s)max = 0.001, R = 0.0290, wR = 0.0651。在化合物1中, 锡原子呈六配位畸变八面体构型, 化合物2的锡原子则是五配位畸变三角双锥构型。 展开更多
关键词 二(对苄基)锡双吗啉荒酸 二(对苄基)化锡N N-二乙基荒酸 合成 表征 晶体结构
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氯代二苯基锗氨荒酸酯的合成及表征
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作者 尹汉东 张如芬 +2 位作者 王勇 马春林 雷风芹 《有机化学》 SCIE CAS CSCD 北大核心 2001年第8期589-592,共4页
以二苯基二氯化锗和氨荒酸钠为原料,合成了十三种氯代二苯基锗氨荒酸酯Ph2GeCl(S2CNRR'),利用元素分析、IR、1H NMR、UV和MS表征了这些化合物的结构,确定了氨荒酸基是以非均性的双齿形式与锗原子配位.生物活性测试表明,该类化合物对KB... 以二苯基二氯化锗和氨荒酸钠为原料,合成了十三种氯代二苯基锗氨荒酸酯Ph2GeCl(S2CNRR'),利用元素分析、IR、1H NMR、UV和MS表征了这些化合物的结构,确定了氨荒酸基是以非均性的双齿形式与锗原子配位.生物活性测试表明,该类化合物对KB和BeL癌细胞具有较好的抑制活性. 展开更多
关键词 合成 生物活性 有机锗化合物 代二苯基锗荒酸 体外抑癌活性 结构表征
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某聚氨酯新材料项目职业病危害控制效果评价
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作者 杨泽云 陆春花 周萍 《职业与健康》 CAS 2007年第18期1649-1650,共2页
目的对建设项目职业病危害控制效果进行评价,确定其主要的职业病危害因素及危害程度,评价相应防护措施的效果。方法通过收集相关资料、现场职业卫生学调查和职业卫生检测,采用检查表法和定量分级法进行综合评价。结果该新建项目主要职... 目的对建设项目职业病危害控制效果进行评价,确定其主要的职业病危害因素及危害程度,评价相应防护措施的效果。方法通过收集相关资料、现场职业卫生学调查和职业卫生检测,采用检查表法和定量分级法进行综合评价。结果该新建项目主要职业病危害因素是粉尘、甲苯-2,4二异氰酸酯(TD I)、二氯甲烷、CO2及噪声等;投料处粉尘浓度超过国家标准,其余检测点的职业病危害因素浓度(强度)均符合现行国家职业卫生标准;但总平面布置中食堂布局不合理、重点岗位缺少机械通风设备、作业现场缺少警示标识和中文警示说明。结论该新建项目职业病危害控制效果一般,职业病防护设施等方面需整改。 展开更多
关键词 建设项目 职业危害 控制效果评价 职业卫生 氯氨酯
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聚氨酯防水屋面渗漏原因及处理 被引量:1
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作者 陈志锋 《建筑技术》 北大核心 2003年第7期533-533,共1页
广州市番禺区某别墅小区,屋面防水工程完成后2个月即遇大暴雨,70%的屋面下雨时屋面未渗漏,但到第二天天晴后屋面却出现了不同程度的渗漏。该屋面作法自下而上为:钢筋混凝土楼板随捣随抹光→2mm厚聚氨酯涂膜,四周卷起450 mm→包装纸隔... 广州市番禺区某别墅小区,屋面防水工程完成后2个月即遇大暴雨,70%的屋面下雨时屋面未渗漏,但到第二天天晴后屋面却出现了不同程度的渗漏。该屋面作法自下而上为:钢筋混凝土楼板随捣随抹光→2mm厚聚氨酯涂膜,四周卷起450 mm→包装纸隔离层→40 mm(最薄处)泡沫混凝土保温层,找坡2%→40mm厚C20细石混凝土刚性防水层表面压光,配 4钢筋双向中距200 mm→3 mm厚水泥胶结合层→地砖用10 mm厚纯水泥浆勾缝。 展开更多
关键词 氯氨酯 防水屋面 渗漏 原因 钢筋混凝土 楼板
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3-氯-L-丙氨酸盐酸盐的合成研究 被引量:1
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作者 李锋成 向家桂 +1 位作者 王海美 王发松 《广东化工》 CAS 2019年第21期15-17,37,共4页
通过对反应过程的优化,探索3-氯-L-丙氨酸盐酸盐的最佳合成工艺并对中间产物以及最终产物进行质谱表征。实验得最佳工艺为:5.00 g的L-丝氨酸和4.15 ml二氯亚砜,低温反应1 h后升温至40℃继续反应4.5 h,产率约83.9%;5.00 g的L-丝氨酸甲酯... 通过对反应过程的优化,探索3-氯-L-丙氨酸盐酸盐的最佳合成工艺并对中间产物以及最终产物进行质谱表征。实验得最佳工艺为:5.00 g的L-丝氨酸和4.15 ml二氯亚砜,低温反应1 h后升温至40℃继续反应4.5 h,产率约83.9%;5.00 g的L-丝氨酸甲酯盐酸盐和7.36 g五氯化磷,冰水浴下反应2 h后升温至30℃继续反应2 h,产率约95.3%;5.00 g的3-氯-L-丙氨酸甲酯盐酸盐在50 mL的6 mol/L的盐酸中先回流反应1 h后再蒸馏反应0.8 h,产率约75.4%。总产率约60.3%。 展开更多
关键词 L-丝 L-丝酸甲盐酸盐 3--L-丙酸甲盐酸盐 3--L-丙酸盐酸盐
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Teflon-pad shaping process of circular metal blanks into quasi-cup specimens by theoretical and experimental methods 被引量:1
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作者 Abbas NIKNEJAD Iman KARAMI FATH 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第1期213-227,共15页
Teflon-pad shaping process of circular metal blanks into quasi-cup specimens is investigated by theoretical and experimental methods in the quasi-static condition. In the experiments, circular metal sheets are formed ... Teflon-pad shaping process of circular metal blanks into quasi-cup specimens is investigated by theoretical and experimental methods in the quasi-static condition. In the experiments, circular metal sheets are formed into the quasi-cup samples by compressing them between a Teflon-filled die and a rigid punch with desirable shape. To investigate influences of different parameters on the forming progress, 12 rigid punches with different dimensions, two blank material types of aluminum and galvanized iron, three blank thicknesses of 0.6, 1.1 and 1.5 mm, and two Teflon-fillers of PVC and polyurethane are used in several experimental tests. In the analytical part, theoretical deformation models of metal blank and Teflon-filler are introduced and based on energy method, energy absorptions by the blank and Teflon-filler are calculated to derive a theoretical formula for predicting total required energy of the forming process. For this purpose, several energy absorption mechanisms are considered in the blank and filler. Furthermore, predictions by theoretical equation are compared with the corresponding experimental tests to study the verity of the calculated formulas. Theoretical and experimental results illustrate change trend of forming energy with respect to blank thickness. Also, the performed forming tests show that when external cone angle of rigid punch with respect to the horizontal direction increases, forming energy increases nonlinearly; and when the depth of spherical part of rigid punch increases, the probability of rupture increases. Additionally, the experiments demonstrate that there is a direct relationship between the forming energy and flow stress of the blanks. Furthermore, experimental observations illustrate that forming energy of a certain blank with PVC Teflon-filler is higher than that of a similar specimen with polyurethane Teflon-filler; but, the probability of wrinkling decreases when PVC Teflon-pad is used as the filler; and it is advantage of PVC Teflon-filler with respect to polyurethane Teflon. 展开更多
关键词 Teflon-pad forming circular metal blank quasi-cup specimen PVC Teflon-filler polyurethane Teflon-filler forming energy
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Closed Loop Recycling of Chlorine for Sustainable Development of Polyurethane Industry 被引量:1
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作者 丁建生 华卫琦 +2 位作者 胡兵波 宋锦宏 楼银川 《Transactions of Tianjin University》 EI CAS 2011年第4期298-304,共7页
Increasing demand is fueling the booming polyurethane industry worldwide. An impeding issue for poly- urethane industry is how to handle the large quantity of hydrogen chloride byproduct generated from the synthesis o... Increasing demand is fueling the booming polyurethane industry worldwide. An impeding issue for poly- urethane industry is how to handle the large quantity of hydrogen chloride byproduct generated from the synthesis of intermediates, i.e., isocyanates. In the meantime, the traditional chloro-alkaline process sufibrs both from the high en- ergy intensity of electrolysis method and the disparity in the chlorine and caustic soda market. To solve these prob- lems, the state-of-the-art chlorine recycling technologies are reviewed and compared. Approaches for cost-effective utilization of chlorine in polyurethane industry are investigated. Chinese academies and enterprises' on-going effort on the development of a novel hydrogen chloride oxidation process for the synthesis of chlorine is presented. With this process, the closed loop recycling of chlorine can be realized. Tremendous economic, environmental and social bene- fits can be expected. A wide adoption of this technology will significantly advance the sustainable development of polyurethane industry. 展开更多
关键词 POLYURETHANE sustainable development hydrogen chloride oxidation CHLORINE chlorine recycling
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Syntheses,Spectroscopic Properties and Crystal Structures of (2-Cl-C_6H_4CH_2)_3SnS_2CN(C_5H_(10)) and (2-Cl-C_6H_4CH_2)_3SnS_2CN(C_4H_9N)
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作者 尹汉东 王传华 邢秋菊 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第10期1127-1132,共6页
Two tri(2-chlorobenzyl)tin(IV) complexes with dithiocarbamate ligands (2-Cl- C6H4CH2)3SnS2CN(C5H10) 1 and (2-Cl-C6H4CH2)3SnS2CN(C4H9N) 2 have been synthesized by the reaction of tri(2-chlorobenzyl)tin(IV) chloride wit... Two tri(2-chlorobenzyl)tin(IV) complexes with dithiocarbamate ligands (2-Cl- C6H4CH2)3SnS2CN(C5H10) 1 and (2-Cl-C6H4CH2)3SnS2CN(C4H9N) 2 have been synthesized by the reaction of tri(2-chlorobenzyl)tin(IV) chloride with dithiocarbamates and characterized by elemental analysis, IR and 1H NMR. The crystal structures were determined by X-ray single-crystal diffraction. The crystal of complex 1 belongs to triclinic, space group P with a = 9.121(5), b = 10.788(6), c = 15.549(8) ? a = 77.812(6), b = 88.279(8), g = 72.023(6)o, Z = 2, V = 1421.5(13) ?, Dc = 1.532 g/cm3, ?= 1.344 mm-1, F(000) = 660, R = 0.0382 and wR = 0.0984; and that of complex 2 is of monoclinic, space group P21/n with a = 13.892(10), b = 2.1274(8), c = 2.0553(15) ? b = 107.145(11)o, Z = 4, V = 2726(3) ?, Dc = 1.600 g/cm3, ?= 1.403 mm-1, F(000) = 1320, R = 0.0361 and wR = 0.0826. Their structures show a distorted trigonal bipyramidal configuration with five- coordination for the central tin atoms. 展开更多
关键词 tri(2-chlorobenzyl)tin(IV) DITHIOCARBAMATE crystal structure
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