新型低VOC液态密封胶的研制  

Development of a New Type of Low VOC Liquid Sealant

作　　者：邓映礼 陈炳耀 姚荣茂 李军 DENG Yingli;CHEN Bingyao;YAO Rongmao;LI Jun(Guangdong Fuvo Industrial Co.,Ltd.,Zhongshan 528434,China;Guangdong Sanvo Chemical Technology Co.,Ltd.,Zhongshan 528429,China)

机构地区：[1]广东阜和实业有限公司,广东中山528434 [2]广东三和化工科技有限公司,广东中山528429

出　　处：《化学与粘合》2023年第5期476-479,共4页Chemistry and Adhesion

摘　　要：试验优选丁腈橡胶为密封胶主原料,采用适当的改性酚醛树脂、填料去优化液态密封胶的成膜性、物理粘接性以及耐介质性等,通过把控好溶剂原料的VOC值以满足低挥发性、低毒有机物含量的要求;试验结果发现,选用LG化学LG3250丁腈橡胶为主剂、改性酚醛树脂PF,以丙酮、精醋酸甲酯、碳酸二甲酯、120#汽油搭配为低毒溶剂原料,以此为配方所制备的液态密封胶黏度为74.35 m Pa·s、耐压性(25℃)8.91 MPa、剪切强度为0.70 MPa、VOC实测值为193.6 g/L,满足GB/T33372-2020《胶粘剂挥发性有机化合物限量》标准要求,有良好的应用发展前景。In the test,the nitrile rubber is preferred as the main raw material of the sealant.Appropriate modified phenolic resins and fillers are used to optimize the film-forming properties,physical adhesion and medium resistance of the liquid sealant.Controlling the VOC value of solvent raw materials to meet the requirements of low volatility and low toxic organic content;the test results find that when the LG3250 nitrile rubber from LG Chem is used as the main agent,the modified phenolic resin PF,acetone,refined methyl acetate,dimethyl carbonate and 120#gasoline are used as low-toxic solvent raw materials,the viscosity of the liquid sealant prepared by this formula is 74.35 mPa·s,the pressure resistance(25℃)is 8.91 MPa,the shear strength is 0.70 MPa and the measured VOC value is 193.6,which meets the requirements of GB/T33372-2020‘Adhesive volatile organic compounds limit’standard,has good application development prospects.

关 键 词：液态密封胶 丁腈橡胶 低VOC溶剂 丙烯腈含量 

分 类 号：TQ436.6[化学工程]