CAJ | 학술논문

以马来海松酸( MPA )、三羟甲基丙烷( TMP )、丙三醇共聚合成了松香基超支化聚酯( HBP),在醇酸物质的量之比3∶1的条件下,探讨了反应温度、物料配比、催化剂对反应的影响；用甲基丙烯酸对HBP进行改性得到UV固化端乙烯基松香基超支化聚酯(VHBP),采用 FT-IR、GPC、DSC、TG对HBP及VHBP进行分析表征。结果表明：当甘油与三羟甲基丙烷物质的量之比为1∶1,反应温度220℃,催化剂用量为0.2%时,多分散系数( PDI)较小,为最佳反应条件。 FT-IR分析表明HBP中含有大量酯基和羟基,反应得到超支化聚酯,数均分子质量(Mn)为2308,热失重为50%时温度为402℃,玻璃化转变温度(Tg)为42.9℃,特性黏度为2.11 mL/g。 FT-IR分析表明VHBP中出现乙烯基特征峰,热失重为50%时温度为379℃,Tg 为-31.78℃,特性黏度为1.1 mL/g。并且,超支化聚酯改性前后均具有较好的溶解性能。对VHBP紫外光固化膜性能分析表明：固化膜具有较好的柔韧性、耐水性、耐醇性和耐碱性,耐冲击性>50 kg/cm,附着力为1级,铅笔硬度为3H,凝胶率85%。
이마래해송산( MPA )、삼간갑기병완( TMP )、병삼순공취합성료송향기초지화취지( HBP),재순산물질적량지비3∶1적조건하,탐토료반응온도、물료배비、최화제대반응적영향；용갑기병희산대HBP진행개성득도UV고화단을희기송향기초지화취지(VHBP),채용 FT-IR、GPC、DSC、TG대HBP급VHBP진행분석표정。결과표명：당감유여삼간갑기병완물질적량지비위1∶1,반응온도220℃,최화제용량위0.2%시,다분산계수( PDI)교소,위최가반응조건。 FT-IR분석표명HBP중함유대량지기화간기,반응득도초지화취지,수균분자질량(Mn)위2308,열실중위50%시온도위402℃,파리화전변온도(Tg)위42.9℃,특성점도위2.11 mL/g。 FT-IR분석표명VHBP중출현을희기특정봉,열실중위50%시온도위379℃,Tg 위-31.78℃,특성점도위1.1 mL/g。병차,초지화취지개성전후균구유교호적용해성능。대VHBP자외광고화막성능분석표명：고화막구유교호적유인성、내수성、내순성화내감성,내충격성>50 kg/cm,부착력위1급,연필경도위3H,응효솔85%。
A rosin based hyperbranched polyester ( HBP ) was prepared by copolycondensation of maleopimaric acid ( MPA ) , trimethylolpropane(TMP), and glycerin. When the mole ratio of alcohol to acid was 3∶1, the effects of reaction temperature, material ratios, and catalyst contents on the hyperbranched polyester synthesis were discussed. The results showed that the optimal conditions were as follows:the mole ratio of glycerin to TMP 1∶1, the dosage of catalyst 0. 2%, reaction temperature 220 ℃. Under these conditions, the polydispersity index( PDI) was small. The structure and performance of the polyester was characterized by FT-IR, GPC, DSC, and TG. The results showed that HBP contained a large number of ester and hydroxyl groups;the number average molecular weight was 2 308;the temperature with thermal weight loss of 50% was 402 ℃;the glass transition temperature(Tg) was 42. 9℃; the intrinsic viscosity was 2. 11 mL/g. When the polymer was further modified by methacrylic acid, the obtained hyperbranched polyester contained terminal vinyl groups( VHBP) . The structure and performance of VHBP was characterized by FT-IR, DSC, and TG. The results showed that VHBP contained terminal vinyl groups; the temperature of 50% thermal weight loss was 379 ℃;the Tg was -31. 78 ℃; the intrinsic viscosity was 1. 1 mL/g. HBP and VHBP had good solubility. The UV-cured film of VHBP had good flexibility and resistance to water, alcohol, and alkali. And the adhesion force was 1 grade;the impact resistance was over 50 kg/cm;gel rate was 85%;film hardness by pencil was 3H.