注射级密胺树脂膜塑料固化行为和加工性.pdfVIP

注射级密胺树脂模塑料的固化行为和加工性 摘 要 三聚氰胺- 甲醛树脂（MF ）是由三聚氰胺与甲醛在一定条件下合成的热固性树 脂。本文研究了 α-纤维素填充三聚氰胺- 甲醛树脂体系的固化动力学和固化行为， 体系用氨基磺酸铵、二乙醇苯胺作潜伏性固化剂，二甲基硅油作润滑剂。讨论了配 方的各组分用量比值，对不同配方的三聚氰胺- 甲醛树脂进行了注射成型尝试，测 量了所得密胺熟料各项性能，并对不同配方获得的树脂性能进行了比较。 通过差示扫描量热仪（DSC ）研究了体系的非等温过程固化反应动力学，并 用 Kissinger 和 Ozawa 方法分别求得体系固化反应的表观活化能△E ，根据 Crane 理论计算得到体系的固化反应级数。结果显示，用 Kissinger 和 Ozawa 方法分别求 得的表观活化能相差很小，其固化行为是一个复杂的反应。同时，使用 DSC 研究 了不同含量潜伏性固化剂对三聚氰胺- 甲醛树脂体系的固化影响，结果显示，潜伏 性固化剂含量越高发生固化反应的温度越高。 关键词 三聚氰胺- 甲醛树脂（MF ） ： ，固化动力学，注射成型 III 注射级密胺树脂模塑料的固化行为和加工性 Abstraction The melamine -formaldehyde resin (MF) which is a kind of thermosetting resin synthesizes by melamine and formaldehyde under the controlled condition.This article has studied the curing dynamics and the curing behavior of melamine -formaldehyde resin system which packed by Alpha - cellulosen , the system with ammonium sulfamate and N-Phenyldiethanolamine as the latent firming agent and the dimethyl silicon painter as lubricant .Simultaneously ，this article has discussed various components ratio of different formulas and has attempted to carry on the injection molding of different formulas melamine -formaldehyde resin,and has measured the performance of each formulas.The curing kinetics of the system was studied by non-isothermal approach .The kinetic parameters of the curing reaction including the activation energy and reaction order were calculated, and the activation energy were calculated using Kissinger and Ozawa method. The r