乙醇在聚氨酯/乙烯基酯树脂互穿网络中的吸收动力学及传递分析

采用石英弹簧称重法测定了乙醇在几种聚氨酯（PU）／乙烯基酯树脂互穿网络（IPN）中的吸收动力学数据，用蠕变传递模型对实验数据进行关联，并对IPN的微观结构进行了分析。结果表明：乙醇在PU／含促羟基的乙烯基酯树脂（CBIPN）膜和PU／正丁醇接枝乙烯基酯树脂（HBIPN）膜中的D远大于在PU膜和PU／不含仲羟基的乙烯基酯树脂（PIPN）膜中的D，关联得到的CBIPN和HBIPN膜的杨氏模糊也远大于纯PU和PIPN膜，与其它实验结果相吻合，说明在网络间引入化学键或氢键作用能有效地改善聚氨酯／乙烯基酯树脂互穿网络的相容性，从而提高材料的力学性能     

丁腈橡胶对乙烯基酯树脂的改性研究

本文研究了由乙烯基酯树脂和丁腈橡胶所组成混杂树脂蝗力学性能，固化性能和相结构。结果表明该混杂树脂浇铸体具有分相结构。加入少量（３％－５％）丁腈橡胶能有效地对乙烯基酯树脂进行增韧，而多量（１０％以上）丁腈橡胶的加入可明显地降低乙烯基树脂的固化收缩率。     

耐高温乙烯基酯树脂的研究

研究了一种耐高温乙烯基酯树脂。采用酚醛环氧树脂与甲基丙烯酸单体反应制备乙烯基酯树脂 ,再通过引入甲苯二异氰酸酯 (TDI)改性乙烯基酯树脂。改性树脂的热变形温度可达 178℃ ,同时具有良好的物理、机械性能。用红外分析方法验证了合成反应和固化形式 ,并对树脂的结构与性能特征进行了分析。     

特性乙烯基酯树脂的技术发展

就国内外乙烯基酯树脂的技术发展和趋势作一总结和概述，简述具有各种特殊理化性能的乙烯基酯树脂及其衍化品种，及其应用，概述具有乙烯基酯树脂和不饱和聚酯树脂综合性能的新产品乙烯基聚酯树脂的性能和应用。     

乙烯基酯树脂CFRP的ILSS研究

本文主要用六种不同结构的乙烯基酯树脂，研究了树脂结构、碳纤维上胶剂类型、ＣＦＲＰ的生处理条件等对ＣＦＲＰ的ＩＬＳＳ的影响。结果表明，当用Ｍ－６号乙烯基酯树脂和适当条件下所制得的ＣＦＲＰ的ＩＬＳＳ可达７５ＭＰａ，并用ＳＥＭ对剪切后拉伸断貌进行了分析。     

乙烯基酯树脂低苯乙烯挥发助剂的研究与应用(上)

苯乙烯在不饱和聚酯树脂中起着稀释剂和交联剂的双重作用,是乙烯基酯树脂中用量最大的活性单体,但是在玻璃钢成型过程中,会大量挥发,严重污染环境,危害工人身体健康。我们的实验主要是研究华东理工大学华昌聚合物有限公司的几种不同类型的乙烯基酯树脂:双酚A型乙烯基酯树脂MFE 711、阻燃型乙烯基酯树脂MFE 27和酚醛环氧型乙烯基酯树脂MFE W3,通过MERICAN 109等几种不同助剂的复配优化,来控制苯乙烯的挥发量;在25℃温度下,在固化和非固化条件下,在静态和动态条件下分别测试加入助剂后树脂的苯乙烯挥发情况及相关性能变化,并于市场上最成熟的苯乙烯挥发抑制剂BYK 740、BYK 750进行对比测试。最后我们优化出一种乙烯基酯(VE)树脂专用的LSE助剂配方602,再通过万能试验机进一步研究了助剂前后树脂对玻璃钢表面粘接性能的影响。     

乙烯基酯固化适宜的引发剂

乙烯基酯树脂又称环氧乙烯基酯树脂,是由环氧树脂与不饱和有机一元羧酸进行开环酯化反应而得的分子两端含有乙烯基酯基团、中间骨架为环氧树脂的一类不饱和聚酯树脂,主要类型有丙烯酸-环氧型、甲基丙烯酸-环氧型、甲基丙烯酸-酚醛环氧型等。乙烯基酯树脂可以认为是丙烯酸改性的环氧树脂,具有环氧树脂和丙烯酸不饱和聚酯树脂的优良性能,化学结构与环氧树脂相似,工艺性能与不饱和聚酯树脂相近。因而粘接力强、交联密度大、固化快速、耐化学腐蚀性极好,非常适合制造耐腐蚀胶粘剂、密封胶、金属快速修补剂、光固化胶粘剂、防腐涂料等。     

高性能乙烯酯

据《P·W》1997．55（1）41报导，日本Takeda化学工业公司开发了一种高性能的乙烯基酯。这种特别改进的乙烯基酯提供了双酚A型乙烯基酯的坚韧性和可模塑性以及酚醛情漆型的耐热性。这种树脂可用典型的金属氧化物或金属氢氧化物熟化，以这种乙烯基酯为基础的SMC、BMC和TMC具有像聚酯组成物一样的浸渍、模塑和熟化特性，它的价格大约与双酚A型乙烯基酯相同，与其它乙烯基酯不同，这种树脂是无色的。高性能乙烯酯     

MFE-10乙烯基酯树脂在FBP光缆加强芯中的应用

环氧乙烯基酯树脂指的是分子二端含有乙烯基酯基团、中间骨架为环氧树脂的一类不饱和聚酯树脂。它们由不饱和有机一元羧酸和环氧树脂进行开环酯化反应得到。MFE-10乙烯基酯树脂为低苯乙烯含量环氧乙烯基酯树脂，对降低挥发性有机化合物的污染、改善工作环境都具有非常重要的意义。MFE-10特别适合于拉挤、缠绕等热固化玻璃钢成型工艺。FRP光缆加强芯是以玻璃纤维和环氧乙烯基酯树脂为主要原料，通过拉挤工艺而制成的。可取代钢丝成为新型的光缆加强芯。     

电子束固化胶粘剂的环境老化研究

过去的试验性研究已经证明某些不饱和的聚合物可以用电子柬曝光的方法进行固化。近来,用一种不饱和的聚酯树脂粘接、然后用电子束固化的铝合金搭接抗剪试片已产生了十分令人满意的强度性能。也已发现由丙烯酸单体与双酚一环氧氯丙烷缩合产物的化学反应生产的乙烯基酯树脂,适合于粘接铝搭接抗剪试片。这些试片也是用电子束辐射曝光固化的。实践证明,辐射固化的乙烯基酯组合件的快速、高温、搭接抗剪强度比用同样树脂粘接、用有机过氧化物催化,并在压力下加热固化的热固化组合件的     

玻璃钢在电解槽盖的应用

叙述了用乙烯基酯不饱和聚酯树脂制作虎克－１６型玻璃钢电解槽盖的施工方法,介绍了乙烯基酯不饱和聚酯树脂的性能。     

环氧乙烯基酯树脂 (Ⅰ)环氧乙烯基酯树脂的分类、合成和固化

对环氧乙烯基酯树脂的分类、合成和固化作了叙述 ,并与普通不饱和聚酯固化过程进行了比较。     

成分比例不同的MEKP在乙烯基树脂固化中的应用

采用50℃等温DSC方法研究了成分比例不同的过氧化甲乙酮(MEKP)在乙烯基树脂固化中的作用并讨论了促进剂和MEKP用量对固化的影响。结果表明,成分比例不同的MEKP固化峰值时间和固化率不同,二聚体含量较高的MEKP峰值时间短,固化率高。在促进剂用量1%前提下,促进剂/MEKP质量比为1/1.5时,固化率达到最大(58.5%),是乙烯基树脂固化合适的引发剂。     

Toughened polyester matrices for advanced composites

An intercrosslinked network of hybrid bismaleimide (BMI) modified vinyl ester oligomer–unsaturated polyester matrix systems have been developed. Vinyl ester oligomer (VEO) was used as a toughening agent for unsaturated polyester resin and was added in 2, 4, and 6% (by wt). Benzoyl peroxide was used as curing agent. The VEO‐toughened unsaturated polyester matrix systems were further modified with 5, 10, and 15% (by wt) of bismaleimide. Bismaleimides modified vinyl ester–unsaturated polyester matrices were characterized by mechanical (tensile strength, flexural strength, tensile modulus, flexural modulus, and impact strength), thermal [differential scanning calorimetry (DSC), thermogravimetic analysis (TGA), heat deflection temperature analysis (HDT)] and morphological studies [scanning electron microscope (SEM)] and water absorption. Data obtained from mechanical studies indicated that the introduction of VEO into unsaturated polyester resin improves the fracture toughness. The introduction of BMI into VEO incorporated unsaturated polyester resin enhanced both thermal and mechanical behavior. The scanning electron micrographs of fractured surfaces of VEO‐modified unsaturated polyester systems and BMI modified vinyl ester–unsaturated polyester matrices illustrate the presence of homogeneous morphology. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 167–177, 2007     

大型风力发电机叶片专用高性能树脂

本文比较了用于大型风力发电机叶片的三种高性能基体树脂:环氧树脂、环氧乙烯基酯树脂、不饱和聚酯树脂的结构、性能及应用等特点。     

Curable resins based on recycled poly(ethylene terephthalate) for coating applications

Poly(ethylene terephthalate) waste was depolymerised in the presence of diethylene- or tetraethylene glycol and manganese acetate as a catalyst. An epoxy resin was then prepared by the reaction of these oligomers with epichlorohydrin in presence of NaOH as a catalyst. The produced oligomers were condensed with maleic anhydride and ethylene glycol to produce unsaturated polyester. The chemical structures of the resulting epoxy and unsaturated polyester resins were confirmed by ¹HNMR. The vinyl ester resins were used as cross-linking agents for unsaturated polyester resin diluted with styrene, using free radical initiator and accelerator. The 2-amino ethyl piprazine was used as hardener for epoxy resins. The curing behaviour of the unsaturated polyester resin, vinyl ester resins and styrene was evaluated at different temperatures ranged from 25 to 55 °C to calculate the curing activation energy of the system. The cured epoxy and unsaturated polyester resins were evaluated in coating application of steel.     

Mechanical characterization and chemical resistances of cured unsaturated polyester resins modified with vinyl ester resins based on recycled poly(ethylene terephthalate)

Unsaturated polyester resin (UP) was prepared from glycolyzed oligomer of poly(ethylene terephthalate) (PET) waste based on diethylene glycol (DEG). New diacrylate and dimethacrylate vinyl ester resins prepared from glycolysis of PET with tetraethylene glycol were blended with UP to study the mechanical characteristics of the cured UP. The vinyl ester resins were used as crosslinking agents for unsaturated polyester resin diluted with styrene, using free‐radical initiator and accelerator. The mechanical properties of the cured UP resins were evaluated. The compressive properties of the cured UP/styrene resins in the presence of different vinyl ester concentrations were evaluated. Increasing the vinyl ester content led to a pronounced improvement in the compression strength. The chemical resistances of the cured resins were evaluated through hot water, solvents, acid, and alkali resistance measurements. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 3175–3182, 2007     

Compressive Properties and Curing Behaviour of Unsaturated Polyester Resins in the Presence of Vinyl Ester Resins Derived from Recycled Poly(ethylene terephthalate)

Poly(ethylene terephthalate) waste was depolymerised in the presence of tetraethylene glycol and manganese acetate as a catalyst, so as to produce oligomers. An epoxy resin was then prepared by the reaction of these oligomers with epichlorohydrin in presence of NaOH as a catalyst. New diacrylate and dimethacrylate vinylester resins were then synthesized by reaction of the terminal epoxy groups with acrylic and methacrylic acid in the presence of triphenyl phosphite as a catalyst. The chemical structures of the resulting vinyl ester resins were confirmed by ¹HNMR. The vinyl ester resins were used as crosslinking agents for unsaturated polyester resin diluted with styrene, using free radical initiator and accelerator. The curing behaviour of the unsaturated polyester resin, vinyl ester resins and styrene was evaluated at temperatures from 25 to 55 ^○C. The compression properties of the cured resins, having different vinyl ester contents and different cure temperatures, were evaluated. Increasing the cure temperature and the vinyl ester content led to a pronounced improvement in the compression strength and Young’s modulus.     

环氧乙烯基酯树脂（I）环氧乙烯基酯树脂的分类、合成和固化

对环氧乙烯基酯树脂的分类，合成和固化作了叙述，并与普通不饱和聚酯固化过程进行了比较。     

玻璃钢复合材料基体树脂的发展现状

本文主要介绍玻璃钢复合材料基体树脂近几年发展情况，介绍基体树脂改性和应用，主要包括：不饱和聚酯树脂、环氧树脂、乙烯基酯树脂、酚醛树脂，还简单介绍了热塑性基体树脂及应用。