广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
9期
80-82
,共3页
高固体份%含氟丙烯酸树脂%溶液聚合%常温固化
高固體份%含氟丙烯痠樹脂%溶液聚閤%常溫固化
고고체빈%함불병희산수지%용액취합%상온고화
high solids%fluorine-containing acrylic resin%solution polymerization%ambient cure
通过丙烯酸酯类单体与含氟丙烯酸单体的溶液聚合,制备了高固体份低粘度的含氟多羟基丙烯酸树脂。讨论了反应温度、引发剂、氟单体、羟基值等因素对树脂分子量、黏度以及性能的影响。通过优化条件,结果表明制备的含氟丙烯酸树脂,数均分子量小于6000,分子量分布〈1.5,羟基含量〉30 mgKOH/g,高固体份低粘度特性显著。通过与固化剂N75按质量比1∶5配制成涂料,常温固化成膜后,测定其各项性能均优于普通丙烯酸聚氨酯树脂涂料。
通過丙烯痠酯類單體與含氟丙烯痠單體的溶液聚閤,製備瞭高固體份低粘度的含氟多羥基丙烯痠樹脂。討論瞭反應溫度、引髮劑、氟單體、羥基值等因素對樹脂分子量、黏度以及性能的影響。通過優化條件,結果錶明製備的含氟丙烯痠樹脂,數均分子量小于6000,分子量分佈〈1.5,羥基含量〉30 mgKOH/g,高固體份低粘度特性顯著。通過與固化劑N75按質量比1∶5配製成塗料,常溫固化成膜後,測定其各項性能均優于普通丙烯痠聚氨酯樹脂塗料。
통과병희산지류단체여함불병희산단체적용액취합,제비료고고체빈저점도적함불다간기병희산수지。토론료반응온도、인발제、불단체、간기치등인소대수지분자량、점도이급성능적영향。통과우화조건,결과표명제비적함불병희산수지,수균분자량소우6000,분자량분포〈1.5,간기함량〉30 mgKOH/g,고고체빈저점도특성현저。통과여고화제N75안질량비1∶5배제성도료,상온고화성막후,측정기각항성능균우우보통병희산취안지수지도료。
A kind of fluorine hydroxyl acrylate resin is synthesized by solution free radical polymerization with acrylic monomers and fluoride acrylic monomers.The effects of polymerization temperature,type of initiators,fluoride monomers and hydroxyl value on molecular weight,viscosity and properties of the resin are researched.This fluorine hydroxyl acrylate resin with lower molecular weight(Mn6000,Mw/Mn1.5,hydroxyl content30 mg/g)can be obtained under the optimal reaction condition,which has obviously low viscosity and high solid content.With HDI(N75) as hardener,according to 1∶5,this resin coating is cured at room temperature,which performances are better than ordinary acrylic polyurethane resin coating.
