臺灣博碩士論文加值系統

本文探討五種不同化學結構與分子量之熱塑性聚胺基甲酸脂型(PU)抗收縮
劑對三種不同之低收縮不飽和聚脂(UP)樹脂系統(順丁烯二酸 -丙二醇,
順丁烯二酸 -丙二醇-鄰苯二甲 ,順丁烯二酸 -丙二醇-間苯二甲酸型
UP樹脂),其在聚合固化後之體積收縮,內部染色性及機械性質的影響.實驗
之結果,吾人將以苯乙烯/不飽和聚脂/抗收縮劑三成份系之相特性,硬化後
樣品之反應轉化率,樣品破壞面之微觀結構,微孔洞體積分率及反應過程中
相分離所產生之硬化聚脂連續相組成之改變等因素加以解釋之.

The effect of five thermoplastic polyurethane(PU)-based low
profile additives(LPA) with different chemical structure and
molecular weight on the volume shrinkage chacteristics, internal
pigmentability and mechanical properties for three low-chrink
unsaturated polyester resin(UP) based on maleic anhydride(MA)-
propylene glycol(PG), MA-PG-PA(phthalic anhydride), and MA-PG-
IPA(isophthalic acid) types of UP respectively after the cure
were investigated. The experimental results have been explained
by phase chactistics of the ternary styrene/UP/LPA, reaction
conversion, cured sample morphology, volume fraction of
microvoid, and the composition change in the continuous
crosslinked polyester phase as a result of phase separation
during the cure.