STUDY ON MODIFIED PHENOLIC RESIN .2. MODIFICATION WITH PARA-HYDROXYPHENYLMALEIMIDE STYRENE COPOLYMER
STUDY ON MODIFIED PHENOLIC RESIN .2. MODIFICATION WITH PARA-HYDROXYPHENYLMALEIMIDE STYRENE COPOLYMER
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DOI：
10.1002/app.1992.070440203
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发表时间：
1992-01-15
影响因子：
3
通讯作者：
OTSUKI, K
中科院分区：
文献类型：
--
作者：
MATSUMOTO, A;HASEGAWA, K;OTSUKI, K
研究了对羟基苯基马来酰亚胺（HPMI）与苯乙烯的共聚物与酚醛清漆的共混物对酚醛树脂耐热性和力学性能的改善作用，合成了不同分子量的HPMI与苯乙烯的共聚物。 用差示扫描量热法（DSC）和热重法（TG）分别测定了共聚物的玻璃化转变温度（T（g））和热分解温度。 用差示扫描量热法（DSC）研究了共聚物与酚醛清漆的相容性，发现共聚物具有良好的耐热性和与酚醛清漆的相容性。 模塑料是通过热辊捏合的混合物，涉及酚醛清漆，共聚物，六亚甲基四胺（六亚甲基四胺），和玻璃纤维。 结果表明，与HPMI均聚物改性的酚醛树脂相比，由该模塑料通过传递模塑制备的试件显示出良好的耐热性和更好的力学性能。
The improvement of heat resistance and mechanical properties of phenolic resin was examined with the blend of novolac and copolymers prepared from p-hydroxyphenylmaleimide (HPMI) and styrene.Copolymers of HPMI and styrene with various molecular weights were synthesized. Glass transition (T(g)) and thermal decomposition temperatures of the copolymers were measured by differential scanning calorimetry (DSC) and thermogravimetry (TG), respectively. The miscibility of the copolymers with novolac was examined by DSC.It was found that the copolymers had a good heat resistance and a good miscibility with novolac. Molding compounds were prepared by hot roll-kneading of mixtures that involved novolac, copolymer, hexamethylenetetramine (hexamine), and glass fiber. It was found that the test pieces prepared by transfer molding from the molding compounds showed a good heat resistance and better mechanical properties than phenolic resin modified with HPMI homopolymer.