硅磷改性碳酸钙的合成及其在聚酰胺涂层中应用  

Synthesis of silicon phosphorus modified calcium carbonate and its application in polyamide coating

作　　者：陈智杰 蒋继康 虞一浩 符晔 吴金丹[2] 戚栋明[2] CHEN Zhijie;JIANG Jikang;YU Yihao;FU Ye;WU Jindan;QI Dongming(Intelligent Manufacturing College,Wenzhou Polytechnic,Wenzhou,Zhejiang 325035,China;Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing&Finishing,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang King Label Technology Co.,Ltd.,Huzhou,Zhejiang 313100,China)

机构地区：[1]温州职业技术学院智能制造学院,浙江温州325035 [2]浙江理工大学绿色低碳染整技术浙江省工程研究中心,浙江杭州310018 [3]浙江凯瑞博科技股份有限公司,浙江湖州313100

出　　处：《纺织学报》2023年第4期146-153,共8页Journal of Textile Research

基　　金：浙江省重点研发项目(2021C01077);温州市科技局基础性科研项目(G2020025);温州职业技术学院院级重大项目(WZY2020002)。

摘　　要：为解决碳酸钙粉末在聚酰胺6涂层中易堆积、无阻燃功能等问题,采用自制含硅磷阻燃成分的偶联改性剂对碳酸钙进行表面接枝改性以提升分散性并赋予其阻燃功能。通过红外光谱和元素分析证明了偶联改性剂成功接枝到碳酸钙表面,并进一步研究了改性碳酸钙的接枝反应动力学及亲水亲油性。在此基础上,将改性碳酸钙粉末添加到聚酰胺6/氯化钙/甲醇溶液中制备湿法涂层浆料,并通过双面刮涂、水交换凝固、烘干等制备工艺,最终在织物上构建表面光滑平整的多孔、薄型聚酰胺涂层。对比表征碳酸钙改性对所制聚酰胺6涂层织物的形貌及阻燃性能的影响。结果表明:改性时间为30 h,改性剂质量分数为40%时,可获得表面充分改性的碳酸钙,具有良好的亲油性,其所制聚酰胺6涂层织物拥有较好的阻燃效果。Objective The wet coating technology based on the use of waste polyamide fiber is the main means to prepare coated textiles such as trademark webbing,and also an important way to physically recycle polyamide fiber.This technology is characterized by low production cost and excellent product performance.In order to solve the problems associated with calcium carbonate powder in polyamide 6 coating,such as easy accumulation and lack of flame retardant function,calcium carbonate was grafted onto the surface with self-made coupling modifier containing silicon phosphorus flame retardant components to improve its dispersion and facilitate flame retardant function.Method Calcium carbonate powder was modified by coupling grafting with the reaction product of vinyl trimethylsilane and DOPO as a modifier,which was applied to the preparation of polyamide 6 wet-coated fabric.The effect of calcium carbonate modification degree on its dispersion state in polyamide 6 coating and the surface morphology of the coated fabric was investigated,and the flame retardancy of the coated fabric with different modified degree of calcium carbonate was characterized and compared Results It was proved by FT-IR and elemental analysis that the coupling modifier was successfully grafted onto the surface of calcium carbonate,and the graft reaction kinetics and hydrophilicity and lipophilicity of the modified calcium carbonate were further studied.The infrared spectrum of calcium carbonate powder before and after the grafting reaction is tested,and the results are shown in Fig.2.It can be seen that new peaks appear at 1238 cm-1 and 765 cm-1 of the modified calcium carbonate,of which the peak at 765 cm-1 represents the stretching vibration of Si—O in the coupling modifier molecule,and the peak at 1238 cm-1 reflects to the stretching vibration of P O in the coupling modifier.The results of EDS test of calcium carbonate powder before and after modification are shown in Tab.1.It can be seen that after the grafting reaction,a small amount of P and Si

关 键 词：碳酸钙 偶联改性 湿法涂层 聚酰胺 阻燃 涂层织物 

分 类 号：TQ325[化学工程—合成树脂塑料工业]