不饱和聚酯改性丙烯酸树脂及其涂料的研制

合成了低相对分子质量不饱和聚酯树脂,再与甲基丙烯酸甲酯、苯乙烯等单体进行自由基聚合,制得含羟基的不饱和聚酯改性丙烯酸树脂。由该改性树脂与异氰酸酯制得的涂层,其干性、丰满度、光泽、硬度等综合性能优于一般羟基丙烯酸树脂制得的涂层。讨论了各种合成因素对树脂及涂膜性能的影响。     

不饱和聚酯改性丙烯酸树脂及其涂料

合成了低相对分子质量不饱和聚酯树脂,再与甲基丙烯酸甲酯、苯乙烯等单体进行游离基聚合,制得含羟基的不饱和聚酯改性丙烯酸树脂。由该改性树脂与异氰酸酯制得的涂层,其干性、丰满度、光泽、硬度等综合性能优于一般羟基丙烯酸树脂。讨论了各种合成因素对树脂及涂膜性能的影响。     

高固体分丙烯酸改性聚氨酯涂料的研制

以高固高羟低黏的羟基丙烯酸树脂和合成脂肪酸树脂为主要原料制备高固体分丙烯酸改性聚氨酯涂料．讨论了树脂、固化剂、助剂和有机溶剂等对涂料性能的影响,制得的涂料综合性能良好,具有较好的环保意义。     

硅氧烷接枝改性丙烯酸树脂

大连交通大学的杨莉等人以多种丙烯酸酯类单体为原料合成羟基丙烯酸树脂，将硅酸乙酯部分水解缩聚制得聚硅氧烷；用硅氧烷对丙烯酸树脂进行接枝改性，制得以丙烯酸树脂为主链，具有水解特性及低表面能的硅氧烷为侧链的接枝共聚物；以此为原料得到自抛光及低表面能的复合型防污涂料。采用红外分析仪、热重分析仪对接枝共聚物进行了结构表征。结果表明，羟基丙烯酸树脂的质量分数为70％，     

导读

正周春宇等对水可分散型含羟基丙烯酸基础树脂的合成方案进行了研究,并对所制得产品进行制漆和性能表征,得到了一种高硬度、高光泽的水可分散型含羟基丙烯酸基础树脂,为下一步对该树脂的改性提供了基础数据,并为含羟基丙烯酸树脂的进一步研究提供了合理的解决方案。方俊等对阿尔斯通和法国铁路公司关于列车内部件涂鸦物清除标准进行了梳理,并通过试验开发了一款适     

丙烯酸型F-44光敏酚醛环氧树脂的合成

以溴化四丁基铵作催化剂，用丙烯酸改性F-44环氧树脂，合成了一种既含有丙烯酸基又含有环氧基的光敏酚醛环氧树脂。研究了丙烯酸基的引入量对树脂光学性能、力学性能等的影响。结果表明，当改性树脂中的丙烯酸基与环氧基之比等于1：1时，所制得的树脂具有优良的光化学活性，用改性树脂制成的漆膜具有优良的力学性能、耐溶剂性能和耐酸碱性能。     

双组分高固体丙烯酸聚氨酯涂料的研究

介绍了改性高固体分羟基丙烯酸树脂的合成工艺，通过对引发剂、链转移剂、反应温度及叔碳酸缩水时油酯等因素的讨论，合成了新型的羟基丙烯酸树脂。以其为基料配制了丙烯酸聚氨酯涂料，并讨论了该磁漆的配方设计和各项性能。     

月桂酸改性醇酸树脂及其涂料

用月桂酸对醇酸树脂进行 性,。制得含羟基的浅色醇酸树酯。由该改性树脂同异氰酸酯组份配制的涂料,其干性,等各项性能均较好,讨论了各种合成因素对树脂及涂膜性能的影响。     

卷材面漆用水性丙烯酸酯树脂的制备

采用丁基缩水甘油醚对丙烯酸树脂进行改性,合成了一种高固体分高韧性的水性丙烯酸树脂,并用其制备了卷材面漆。通过研究一系列对树脂及涂膜性能影响的因素,确立了合成水性丙烯酸树脂的最佳配方:丁基缩水甘油醚用量为30%,催化剂用量为1%,羟基含量为3%。上述配方制得树脂为微黄透明溶液,固体分为41%,黏度仅为2 035m Pa·s,涂膜柔韧性突出。     

水分散型羟基丙烯酸树脂的合成与性能研究

随着国家对水性涂料的重视程度逐渐提高,水性涂料的市场占有率也有了较大提升,作为水性涂料的基本成膜物质,水性树脂的研究极大限制了水性涂料的进一步发展。对水可分散型含羟基丙烯酸基础树脂的合成方案进行了研究,并对所制得产品进行制漆和性能表征,得到了一种高硬度、高光泽的水可分散型含羟基丙烯酸基础树脂,为下一步对该树脂的改性提供了基础数据,并为含羟基丙烯酸树脂的进一步研究提供了合理的解决方案。     

MECHANICAL PROPERTIES OF BISMALEIMIDE (N,N′-BISMALEIMIDO-4,4′-DIPHENYL METHANE) - VINYL ESTER OLIGOMER (VEO) MODIFIED UNSATURATED POLYESTER INTERCROSSLINKED MATRICES FOR ADVANCED COMPOSITES

An intercrosslinked network of varying percentages of N,N′-bismaleimido-4,4′-disphenyl methane (BMI), vinyl ester oligomer (VEO) modified unsaturated polyester (UP) matrices have been developed. Vinyl ester oligomer was prepared by reacting commercially available epoxy resin GY 250 (Ciba-Geigy) and acrylic acid was used as toughening agent for unsaturated polyester resin. BMI-VEO-UP matrices were characterized for their mechanical properties, viz tensile strength, flexural strength and unntoched Izod impact test as per ASTM standards. The dielectric strength and water absorption measurements were also performed according to ASTM standards. Data obtained from mechanical studies, dielectric strength and water absorption indicate that the introduction of VEO into unsaturated polyester resin improves mechanical properties and affects the moisture resistance according to its percentage concentration. The incorporation of BMI into the VEO modified unsaturated polyester system improves mechanical properties, dielectric strength and resistance to moisture absorption according to its percentage concentration.     

Preparation and characterization of bismaleimide (N,N′‐bismaleimido‐4,4′‐diphenyl methane)–vinyl ester oligomer–modified unsaturated polyester interpenetrating matrices for advanced composites

Interpenetrating networks of varying percentages of bismaleimide (BMI) in vinyl ester oligomer (VEO) modified unsaturated polyester (UP) matrices have been developed. Vinyl ester oligomer was prepared by reacting commercially available epoxy resin GY 250 (Ciba‐Geigy) and acrylic acid, and used as a toughening agent for unsaturated polyester resin. Unsaturated polyesters modified with 10, 20, and 30 wt % vinyl ester oligomer were made. The VEO toughened unsaturated polyester matrix systems, further modified with 5, 10, and 15 wt % bismaleimide (BMI). BMI–VEO–UP matrices were characterized using differential scanning calorimetry, thermogravimetric analysis, and heat deflection temperature analysis. The matrices, in the form of castings, were characterized for their mechanical properties according to ASTM methods: tensile strength, flexural strength, and unnotched Izod impact test. Data obtained from mechanical studies and thermal characterization indicate that the introduction of VEO and BMI into unsaturated polyester resin improves thermomechanical properties according to their percentage concentration. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2502–2508, 2002     

Block copolymers of unsaturated polyesters and functional elastomers

Block copolymers of unsaturated polyester were prepared by condensation polymerization of hydroxyl or carboxyl terminated liquid rubbers with maleic anhydride, phthalic anhydride, and propylene glycol. The condensate obtained was mixed with styrene monomer to get an unsaturated polyester resin formulation. In this study, copolymers of unsaturated polyesters with hydroxy terminated polybutadiene, carboxy terminated nitrile rubber, and hydroxy terminated natural rubber were prepared. Mechanical properties such as tensile strength, tensile modulus, elongation at break, toughness, impact strength, surface hardness, abrasion resistance, and water absorption were evaluated after the resin was cured in appropriate molds for comparison with the control resin. The fracture toughness and impact resistance of CTBN‐modified unsaturated polyester show substantial improvement by this copolymerization without seriously affecting any other property. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1956–1964, 2004     

高性能高速列车车厢面漆的研制

以高羟值弹性聚酯和羟基丙烯酸树脂混拼为基体树脂,金红石钛白粉为颜料,硅铝基陶瓷空心微珠为填料,纳米ATO和纳米SiO2为改性材料,在助剂和溶剂的配合下制备成甲组分,以HDI三聚体N-3390为乙组分,配制高速列车车厢面漆。经检测,该面漆各项性能指标均达到设计要求。     

巴士客车用丙烯酸聚氨酯罩光清漆的制备

介绍了以聚酯树脂和特种助剂对罩光清漆进行改性,制得了适合巴士客车使用的丙烯酸聚氨酯罩光清漆。分析了聚酯树脂和特种助剂对罩光清漆的丰满度、抗划伤性能、流平性和施工性能的影响。结果表明当选用高固含、高羟基聚酯树脂对丙烯酸树脂进行改性时,涂料具有较好的丰满度和抗划伤性能;当流平剂选用丙烯酸类和有机硅类搭配使用时,可大大提高罩光清漆的流平性能;当触变剂BYK-410的用量为0.3%时,清漆一次涂装干膜60μm不流挂,当DBE慢干剂用量为2%时,涂料具有好的施工性能。     

The effect of reactive monomers and functional polymers on the mechanical properties of an unsaturated polyester resin

A general-purpose unsaturated polyester resin with 2:1 mol ratio of styrene to polyester unsaturation was modified with three vinyl monomers and two hydroxyl terminated polybutadienes. Tensile, flexural, and puncture impact properties were examined. The three acrylate monomers were tetraethylene glycol dimethylacrylate, 1,3 butylene glycol dimethacrylate, and trimethylpropane trimethylacrylate with weight percents of 2.5, 5, 15, and 30. Two hydroxyl terminated polybutadienes with slightly different contents of hydroxyl functionality were also employed in the weight percents of 2.5, 5.0, and 10.0. Results showed that an increase in the number of crosslinks and crosslink density resulted in a deterioration in the mechanical properties. The addition of an immiscible polybutadiene polymer to the polyester resin also showed a decrease in the mechanical performance of the resulting thermoset materials.     

高性能聚酯氨基汽车中涂漆的制备

以饱和聚酯树脂A和苯代三聚氰胺甲醛树脂为主要成膜物制备了汽车中涂漆.讨论了氨基树脂、聚酯树脂、填料、助剂和有机溶剂等对涂料性能的影响.结果表明,当m(饱和聚酯树脂A):m(苯代三聚氰胺甲醛树脂)=36:18,W(羟基聚酯树脂B)=3%,m(碳酸钙):m(滑石粉)=5:5,w(附着力促进剂)=l%,采用丙烯酸类流平剂,选择适宜的有机溶刺时,得到了与底,面漆涂层配套性及综合性能良好的汽车中涂漆.     

浅谈双环戊二烯改性不饱和聚酯树脂的生产工艺

采用双环戊二烯改性不饱和聚酯树脂,使得不饱和聚酯树脂具有很多独特的优异性能。主要介绍以双环戊二烯与顺丁烯二酸酐合成双环戊二烯马来酸单酯为基础,经进一步扩链（加入多元醇酯化）之后得到不饱和聚酯树脂的合成过程。剖析了生产设备、生产工艺流程。     

低苯乙烯散发不饱和聚酯树脂研究

用单官能团醇对不饱和聚酯树脂改性，合成了苯乙烯含量为30％的W01树脂，对W01树脂的挥发性和反应性进行了测定，研究了成膜助剂对W01树脂性能的影响，并与通用型191树脂和一种亚克力板层间粘合用不饱和聚酯商品树脂进行了比较；指出结合成膜助剂的W01树脂能进一步降低苯乙烯的散发。