钙基复合AC发泡剂在N-PCB/PVC复合材料中的应用  

Appication of A Calcium Chemicals Based AC Foaming Agent in N-PCB/PVC Composites

作　　者：段锦华[1] 黄骅[1] 罗琼林[1] 曹理朝 杨治 彭梅醒 刘连斌 苏胜培[1,2] 

机构地区：[1]湖南师范大学化学化工学院资源精细化与先进材料重点实验室,湖南长沙410081 [2]湖南天仁科技实业发展有限公司,湖南临澧415000 [3]湖北天乐新材料有限公司,湖北荆州434300

出　　处：《精细化工中间体》2016年第4期55-64,共10页Fine Chemical Intermediates

基　　金：湖南省战略科兴产业科技攻关项目资助(S2014G217K)

摘　　要：以钙基复合物、发泡剂AC、Pb-Ba稳定剂、E-44和N-PCB为原料,通过共混制备了钙基复合发泡剂,并将其与N-PCB/PVC复合材料进行共混挤出,制备了复合发泡材料。研究了配方及工艺等因素对复合发泡材料的密度、泡孔形貌及力学性能的影响。结果表明:当E-44、CPE及N-PCB用量分别为6、20及100份时,高填充的N-PCB/PVC复合材料的综合性能最佳;当m(钙基复合物)∶m(发泡剂AC)∶m(Pb-Ba稳定剂)∶m(E-44)∶m(N-PCB)=15:1:1:0.1:1时,钙基复合发泡剂分解时吸收与放出的热量基本达到平衡;制备的复合发泡材料,将密度由1.4 g/cm^3降低到0.9 g/cm^3,为大量回收利用N-PCB提供了一条有效的新途径。The foamed composites were prepared by twin-screw extruder with N-PCB/PVC composites and Calcium matrix composite foaming agent prepared by Calcium matrix composites, Azobisformamide, Pb-Ba stabilizer, E-44 and N-PCB. The effects of formula and process on the density,cell structure and mechanical properties of foamed composites were studied. The experimental results showed that the best comprehensive performance of N-PCB/PVC composites were obtained when the loading of E-44, CPE and N-PCB were 6, 20 and 100 phr, respectively. The Calcium matrix composite foaming agent was a kind of endo-exo thermic balanced foaming agent when Calcium matrix composites：Azobisformamide：Pb-Ba stabilizer：E-44：N-PCB=15：1：1：0.1：1. The density of foamed composites was decreased from 1.4 gc/cm^3 to 0.9 g/cm^3 and we have successfully provided an effective and new way for recycling N-PCB.

关 键 词：N—PCB PVC 高填充 吸放热型发泡剂 

分 类 号：TQ314.259[化学工程—高聚物工业]