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Synthesis of Antistatic Composite Based on Reaction Flame Retarding Unsaturated Polyester Resin 被引量:1
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作者 汪水平 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第4期86-88,共3页
The synthesis of reaction flame retarding unsaturated polyester resin and the flame retarding mechanism are investigated.By taking the synthesis flame retarding unsaturated polyester resin as a base material,glass fib... The synthesis of reaction flame retarding unsaturated polyester resin and the flame retarding mechanism are investigated.By taking the synthesis flame retarding unsaturated polyester resin as a base material,glass fibers as reinforced material,under the condition of adding graphite or carbon black respectively,the composites were manufactured.The flame retarding and antistatic properties are also studied.In the experiment,bromide-bearing flame retarding resin decomposed under a high temperature.Compound HBr was set out and retarded or stopped the flame.High concentration of HBr gas wall was formed between gas and solid phrases,which decreased flame.The results show that antistatic property of carbon black is higher than that of graphite.Adding a threshed value of 1% carbon black into composite,the antistatic property is at its highest value. 展开更多
关键词 reaction flame retarding unsaturated polyester resin COMPOSITE ANTISTATIC
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Structure and Properties of Modified Unsaturated Polyester Resin by Nano-TiO_2
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作者 YingXU MingliLI +1 位作者 YahGUO FengjiLU 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2003年第6期578-580,共3页
The nano-TiO2/unsaturated polyester resin (referred to as nano-TiO2/UPR hereafter) was prepared with the 'reaction method', by which a chemical bond generated between nano-TiO2 and UP was inserted in the UP lo... The nano-TiO2/unsaturated polyester resin (referred to as nano-TiO2/UPR hereafter) was prepared with the 'reaction method', by which a chemical bond generated between nano-TiO2 and UP was inserted in the UP long chain. The performance of the nano-TiO2/UPR was determined by such a new structure. The research results showed that the reactivity of nano-TiO2/UPR is higher than that of UPR. The impact strength and bending strength of nano-TiO2/UPR are greatly enhanced as compared with that of UPR. Thermal resistance and dielectric property of nano-TiO2/UPR are the same as that of UPR. 展开更多
关键词 NANO-TIO2 unsaturated polyester resin (UPR) STRUCTURE PROPERTY
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Improved flame resistance properties of unsaturated polyester resin with TiO2-MXOY solid superacid
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作者 Xuexi Chen Mei Wan +2 位作者 Ming Gao Yanxia Wang Deqi Yi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第9期2474-2482,共9页
Five SO4^2-/TiO2-MXOY solid super acids(SSA:Cu@Ti:SSA,Zr@Ti:SSA,Fe@Ti:SSA,Mn@Ti:SSA,Mo@Ti:SSA)were successfully prepared by sol-gel method,and its chemical structure and element content were characterized by X-ray dif... Five SO4^2-/TiO2-MXOY solid super acids(SSA:Cu@Ti:SSA,Zr@Ti:SSA,Fe@Ti:SSA,Mn@Ti:SSA,Mo@Ti:SSA)were successfully prepared by sol-gel method,and its chemical structure and element content were characterized by X-ray diffraction(XRD)analysis,Fourier transform infrared spectroscopy(FHIR)and energy dispersive spectroscopy(EDS).Then,a compound flame retardant system containing SSA and ammonium polyphosphate/montmorillonite(AM)were was introduced into an unsaturated polyester resin(UPR)to enhance the flame retardance.The effect of SSA on the flammability and thermal stability of the UPR was evaluated by the limiting oxygen index(LOI),cone calorimeter te st(CCT)and thermogravimetric analysis(TGA).The LOI results showed that the flame retardance of the UPR composites was significantly improved with the addition of SSA.Moreover,their heat release rate(HRR),total heat release(THR),the smoke production rate(SPR)and CO and CO2 yield were much decreased.In addition,the initial decomposition temperature of UPR/AM/S SA was delayed,indicating that their thermal stability was increased,and the residual char of UPR/AM/SSA was also increa sed due to strong catalytic of SSA ability for esterification and dehydration.Furthermore,the microstructure of the residual char after combustion of the UPR composites was studied by the scanning electron microscopy(SEM),and it was found that the char layer structure was more continuous and dense after the addition of the SSA.In sum up,the synergistic effect between SSA and AM was the main factor for the great improvement of flame retardant of UPR composites. 展开更多
关键词 Flame retardance unsaturated polyester resin(UPR) Solid super acid Cone calorimeter
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Mechanism and Effectiveness of Reduction Action of Unsaturated Polyester Resin Reducer
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作者 曾黎明 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2001年第1期70-74,共5页
The reduction action mechanism of unsaturated polyester resinreducer is analysed. The experimental results show that the activereducer bearing reactive functional group on the ends of moleculeseffectively lowers the c... The reduction action mechanism of unsaturated polyester resinreducer is analysed. The experimental results show that the activereducer bearing reactive functional group on the ends of moleculeseffectively lowers the curing shrinkage of unvaturated polyesterresin. 展开更多
关键词 unsaturated polyester resin curing shrinkage REDUCER
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Mechanism of Reduction Action of Unsaturated Polyester Resin
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作者 曾黎明 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2001年第3期73-75,共3页
The reduction action mechanism of the unsatrurated polyester resinreducer is analysed by the free space volume theory. Throughmeasuring the reduction magnitude in each phase of solidification,the authors predicted the... The reduction action mechanism of the unsatrurated polyester resinreducer is analysed by the free space volume theory. Throughmeasuring the reduction magnitude in each phase of solidification,the authors predicted the rate of reduction is in concordance withthe results from experiments. From this we presented corre- spondingsolutions to different causes of the reduction action of theunsaturated polyester resin. 展开更多
关键词 solidification reduction mechanism analysis unsaturated polyester resin
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Mechanical Properties of Glass Fiber/Unsaturated Polyester Resin Composite Water Collector
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作者 熊艳平 邱莉 +1 位作者 南延民 龙天瑜 《Journal of Donghua University(English Edition)》 CAS 2021年第1期68-71,共4页
The water collector is operated in the humid and hot environment of the cooling tower all the year round.It also needs to carry part of the weight of water and silt.Therefore,it is particularly critical to optimize th... The water collector is operated in the humid and hot environment of the cooling tower all the year round.It also needs to carry part of the weight of water and silt.Therefore,it is particularly critical to optimize the material of the water collector and improve its mechanical properties.Polyester,a general term of polymer obtained from polyols and polyacids,is a kind of engineering plastics with excellent properties and wide applications.Glass fiber is a reinforced plastic reinforcement material,and the biggest characteristic of it is the high tensile strength and good heat resistance.In this paper,glass fiber reinforced polyester resin composite material is prepared,its tensile properties and bending properties are tested,and the performance of the imported material JK2020B is compared and analyzed.The results show that the elastic modulus along the fiber direction is relatively high,but the interlayer force in the direction of thickness and width is very small.This review provides a guidance for production process. 展开更多
关键词 glass fiber unsaturated polyester resin composite material water collector mechanical property
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Characterization of Unsaturated Polyester Filled with Waste Coconut Shells, Walnut Shells, and Carbon Fibers
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作者 Marwah Subhi Attallah Reem Alaa Mohammed Ruaa Haitham Abdel-Rahim 《Fluid Dynamics & Materials Processing》 EI 2023年第10期2449-2469,共21页
This study aims to evaluate the erosion behavior and the hardness of hybrid composites made of varying amounts of coconut shells,walnut shells,and carbonfibers dispersed in a polyester matrix.MINITAB(L16)Taguchi experi... This study aims to evaluate the erosion behavior and the hardness of hybrid composites made of varying amounts of coconut shells,walnut shells,and carbonfibers dispersed in a polyester matrix.MINITAB(L16)Taguchi experiments were used to determine the optimal combination of parameters.In particular,an erosion device con-sisting of a motor with a constantflow rate of 45 L/min,a pump with a diameter of 40 mm,a nozzle with a dia-meter of 5 mm,and a tank made of“perspex glass”55 cm long,30 cm tall,and 25 cm wide was used.The tests were conducted by varying the sample-to-nozzle distance,the pattern angle,and the sand particle size.The results have revealed that the presence of 7.5%by weight of waste coconut shell,for conditions corresponding to 90°angle,sand size 425μm,stand distance 30 cm,gives the best wear resistance(3.04×10^(-5) g/g).Thefiller content and sand particle size affect the erosive rate,with the angle playing a secondary role.The distance between the sample and the nozzle has a weaker effect on erosive wear.The hardness results show that the models(UP-5%carbonfiber-2.5-3.5-4.5-5.5-6.5-7.5 wt.%waste coconut shell)give the best values for prayer compared to the samples(UP-5 wt.%carbonfiber-2.5-3.5-4.5-5.5-6.5-7.5 wt.%waste walnut shell). 展开更多
关键词 unsaturated polyester resin carbonfiber waste coconut shell walnut shell erosive behavior Taguchi’s method L16
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Interface Enhancement of Glass Fiber/Unsaturated Polyester Resin Composites with Nano-Silica Treated Using Silane Coupling Agent 被引量:2
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作者 LUO Weicai WANG Xiao +1 位作者 HUANG Ronghua FANG Pengfei 《Wuhan University Journal of Natural Sciences》 CAS 2014年第1期34-40,共7页
Nano-silica treated with different kinds of coupling agent (KH550, A-143, A-151) was used to modify the surface condition of glass fiber, and then, the modified glass fiber/unsaturated polyester resin (UPR) compos... Nano-silica treated with different kinds of coupling agent (KH550, A-143, A-151) was used to modify the surface condition of glass fiber, and then, the modified glass fiber/unsaturated polyester resin (UPR) composites materials were prepared. Scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), and impact test were used to characterize the composite materials' structure and properties. The morphology of composite materials shows that the adhesion between nano-silica and glass fiber is improved when silane coupling agent is added in. The DMA and impact test results show that silane coupling agent (especially KH550 and A-151) could effectively improve the composite's mechanical properties. When the dose of KH550 was 0.1% (m : m), the storage modulus and impact strength reached the maximum. 展开更多
关键词 silane coupling agent unsaturated polyester resin (UPR) glass fiber NANO-SILICA
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Influence of Cobalte Octoate on Degree of Cure and Flexural Strength of an Unsaturated Polyester Resin
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作者 R M Gengan K Moodley 《复旦学报(自然科学版)》 CAS CSCD 北大核心 2007年第5期749-,共1页
1 Introduction In the GRP (Glass fibre Reinforced Product) industry Cobalt Octoate is the promoter of choice for cross-linking unsaturated polyester (UPE) and styrene monomer.UPE's are often prepared to contain a ... 1 Introduction In the GRP (Glass fibre Reinforced Product) industry Cobalt Octoate is the promoter of choice for cross-linking unsaturated polyester (UPE) and styrene monomer.UPE's are often prepared to contain a concentration of 0.04%-0.05% of Cobalt ions so that faster cross-linking of the resin is achieved and ultimately faster manufacturing of the GRP component is achieved.These products sometimes fail prematurely after being manufactured and dispatched to the end user.The influence of Cobalt Octoat... 展开更多
关键词 cobalte octoate unsaturated polyester resin DSC
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