以萘为单体、三聚甲醛为交联剂的缩合多核芳香烃树脂的合成、交联及性能研究

STUDY ON THE SYNTHESIS, CROSS LINKING AND PROPERTIES OF CONDENSED POLYNUCLEAR AROMATICS RESINS USING NAPHTHALENE AS MONOMER AND TRIOXANE AS CROSS LINKING AGENT

以萘为单体、三聚甲醛为交联剂，可在对甲苯磺酸、浓硫酸或氯磺酸的催化下，在１５０～１６０℃下反应得到未交联的缩合多核芳香烃树脂（Ｂ－树脂）。这种Ｂ－树脂不能单靠热交联的方式转化为Ｃ－树脂，但如果在交联时添加２０％～３０％（质量）的交联剂，则Ｂ－树脂即可有效地进行交联，交联后树脂在氮气中的热降解起始温度在５００℃左右。

Uncross linked condensed polynuclear aromatics (COPNA) resins (B resins) were prepared at 150 ℃～160 ℃ in the presence of an acid catalyst such as p toluene sulfonic acid, sulfuric acid or chlorosulfonic acid. These B resins can not be cross linked simply by heating, while the addition of 20%～30% (mass%) cross linking agent during the corss link process can cross link efficiently. The thermal decomposition temperatures of the cross linked resins are observed to be about 500 ℃ in nitrogen.