改性凹凸棒土及其在氨基模塑料中的应用  

Preparation of Modified Attapulgite and Application in Amino Molding Plastics

作　　者：杨福兴 杨小燕 曲广淼 王军平 刘孝恒[2] YANG Fuxing;YANG Xiaoyan;QU Guangmiao;WANG Junping;LIU Xiaoheng(School of Chemistry and Material Engineering,Nanjing Polytechnic Institute,Nanjing,Jiangsu 210048,China;Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

机构地区：[1]南京科技职业学院,化学与材料工程学院,江苏南京210048 [2]南京理工大学,软化学与功能材料教育部重点实验室,江苏南京210094

出　　处：《塑料》2023年第1期15-18,23,共5页Plastics

基　　金：国家自然科学基金(51674085);南京科技职业学院“科研北斗计划(2.0版)”项目(自然科学类)(NJPI-2022-01);南京科技职业学院“科研北斗计划(2.0版)”项目(人才培育工程类)。

摘　　要：以OP-10为分散剂,十四烷基三甲基氯化铵(TTAC)为改性剂,对凹凸棒土(ATP)进行处理,得到改性ATP(OATP),将改性ATP与氨基模塑料高速混合、压制成型得到氨基模复合材料。采用TEM、XRD、沉降试验等对ATP及改性ATP进行表征,研究了改性ATP添加量对氨基模复合材料力学性能、流动性、甲醛迁移量的影响。结果表明,TTAC无法扩大ATP的层间距,而是以吸附的方式存在于ATP表面,并且改性ATP的棒晶束与ATP相比,能较好地分散在有机溶剂中;当改性ATP添加量为6%时,氨基模复合材料的拉伸强度、弯曲强度与冲击强度均达到最大,其值分别为87.8 MPa、99.4 MPa、2.38 kJ/m^(2),甲醛迁移量降低至6.4 mg/dm^(2);随改性ATP添加量的增加,氨基模复合材料的成型时间、热变形温度明显增大,但是,流动性的变化趋势较小。The amino molding composite were prepared by high-speed mixing and pressing of OATP and amino molding plastics.the modified of attapulgite(ATP)was studied with OP-10 as dispersing agent,Tetradecyl trimethyl ammonium chloride(TTAC)as treating agent and organic attapulgite(OATP)was prepared.The ATP before and after modification was characterized by TEM,XRD and sedimentation test,and the effects of OATP content on the mechanical properties,fluidity and formaldehyde migration of amino mold composite were studied.The results showed that TTAC couldn’t increase the layer spacing of the ATP and could be absorbed on the surface of the ATP,the rod crystal beam of modified ATP was more dispersed than that of ATP in the organic solvent.When 6%OATP was added in amino molding plastics,the tensile strength,bending strength and impact strength of composite could reach maximums value,which were 87.8,99.4 MPa and 2.38 kJ/m^(2)respectively,and the migration amount of formaldehyde could decrease to 6.4 mg/dm^(2).

关 键 词：凹凸棒土 氨基模塑料 十四烷基三甲基氯化铵 复合材料 甲醛迁移量 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TQ323.6