(1)原位聚合刚性高分子增韧环氧树脂
(1) in situ polymerization of rigid polymer toughened epoxy resin.
采用原位聚合技术使初生态刚性高分子均匀分散于刚性树脂基体中,显示准分子水平的复合增韧,使脆性聚合物获得高强度和高韧性,同时文使其耐热性、模量不降低,甚至还略有升高,这是聚合物增韧改性的新途径。例如原位聚合聚对苯甲酰胺(PNM)(5%左右)对环氧树脂和粒子填充环氧树脂进行增韧改性。
In situ polymerization technology is used to make the primary ecological rigid polymer dispersed evenly in the rigid resin matrix, which shows the Composite Toughening of the excimer level to make the brittle polymer get high strength and high toughness. At the same time, the heat resistance and modulus of the polymer are not reduced, even a little increase. This is a new way of toughening and modifying the polymer. For example, in situ polymerization of poly (benzamide) (PNM) (about 5%) for epoxy resin and particle filled epoxy resin toughening.
(2)核壳结构聚合物增韧环氧树脂和聚丙烯酸酯
(2) core shell polymer toughening epoxy resin and polyacrylate
核壳结构聚合物(CSLP)是由2种或2种以上的单体,通过种子乳液聚合而获得的聚合物复合粒子,用于改性环氧树脂可获得显著的增韧效果,还可提高粘接强度,且不改变热变形温度和耐候性,为环氧胶的增韧开辟了较为理想的方法。美国PLExUs(普莱克斯)公司采用核壳技术增韧改性,生产了高强度坚韧丙烯酸酯结构胶。
The core shell structure polymer (CSLP) is a polymer composite particle obtained by the seed emulsion polymerization of 2 or more than 2 kinds of monomers. The modified epoxy resin can get a significant toughening effect. It also improves the bonding strength without changing the thermal deformation temperature and weatherability. It opens up more ideal for the toughening of the epoxy adhesive. Method。 The PLExUs (PLEX) company uses core shell technology to toughen and modify, producing high strength and tough acrylic structural adhesive.
(3)超支化聚合物增韧改性环氧树脂 .
(3) Hyperbranched Polymer Toughened Epoxy resin.
超支化聚合物是近些年来出现的新型高分子材料,它以小分子生长点,通过逐步控制重复反应得到的一系列分子质量不断增长的结构类似的化合物。用作环氧树脂的增韧剂,既能达到增韧目的,也不降低其他性能:例如采用端羧基超支化聚酯HBP-SA.,用量为10%,增韧环氧树脂效果非常明显,其冲击强度和拉伸强度分别提高512%和187%,同时不降低玻璃化温度和弹性模量。
Hyperbranched polymer is a new polymer material, which has been developed in recent years. It is a series of similar compounds with increasing molecular mass by the gradual control of repeated reaction by small molecular growth points. The toughening agent used as epoxy resin can not only achieve toughening and other properties, but also does not reduce other properties: for example, the use of carboxyl hyperbranched polyester HBP-SA. is 10%, the effect of toughening epoxy resin is very obvious, its impact strength and tensile strength are increased by 512% and 187% respectively, while the vitrification temperature and modulus of elasticity are not reduced.
(4)高性能热塑性树脂增韧酚醛树脂
(4) toughening phenolic resin with high performance thermoplastic resin
以热塑性树脂聚苯醚酮(PEK-C)、聚醚砜(PES-C)增韧酚醛树脂,使其韧性提高,.形成以热塑性树脂连续相膜状网络包覆酚醛树脂固化物球粒的“网膜-球粒”结构。
The toughness of the phenolic resin was toughened with thermoplastic polyether ketone (PEK-C) and polyethersulfone (PES-C), and a "omentum globule" structure was formed with the continuous phase membrane network of thermoplastic resin coated with the pellets of the phenolic resin solidified material.