中国胶粘剂

油箱防护胶用于汽车油箱表面的防护，起到防腐、减震、降噪的作用。为满足汽车主机厂降低烘烤温度、缩短烘烤时间的要求，本研究通过对油箱防护胶的低温固化性影响因素及有效调整方法进行研究。采用增塑剂（DINP、Mesamoll）复配使用，PVC掺混树脂和氯醋树脂协同作用，制备了油箱防护胶，并进行了涂膜附着性、力学性能及操作性的研究，以期达到低温固化性的要求。研究结果表明：（1）PVC树脂低温塑化性筛选中，氯醋树脂表现最优，其次是PVC糊树脂，最后为PVC掺混树脂。当w（氯醋树脂）=15%时，最终选择w(PVC掺混树脂)=3%，喷涂施工性、涂膜性能相对最优。（2）通过对增塑剂种类和配比的研究，最终选用DINP作为增塑剂、Mesamoll为辅助增塑剂联合使用。初步确定增塑剂复配使用占比30%，其中Mesamoll配比3%～7%。（3）聚酰胺增黏剂在低温固化性方面贡献不明显，当增黏剂配比为1.3%时可以达到很好的附着作用。（4）从经济利益、产品性能综合考虑，选择增塑剂w(Mesamoll)=3%,w(DINP)=27%为最佳配比。

Fuel tank protective adhesive is used to protect the surface of car fuel tanks,playing a role in corrosion prevention,shock absorption,and noise reduction. In order to meet the requirements of automobile manufacturers to reduce baking temperature and shorten baking time,the factors affecting the low temperature curing of fuel tank protective adhesive and effective adjustment methods were investigated in this study.A fuel tank protective adhesive was prepared by compounding plasticizers(DINP,Mesamoll) and synergistically mixing PVC blended resin with vinyl chloride-acetate copolymer.The adhesion,mechanical properties,and operability of the coating film were studied to meet the requirements of low temperature curing.The research results showed that,(1) In the low temperature plasticization screening of PVC resin,vinyl chloride-acetate copolymer performed the best,followed by PVC paste resin,and finally PVC blended resin.When w(vinyl chloride-acetate copolymer)=15%,the final choice of w(PVC blended resin)=3% resulted in relatively optimal spraying application and coating performance.(2) After studying the types and ratios of plasticizers,DINP was ultimately selected as the plasticizer and Mesamoll was used in combination as the auxiliary plasticizer.It has been preliminarily determined that the proportion of plasticizer compound used was 30%,with Mesamoll ratio ranging from 3% to 7%.(3) The contribution of polyamide tackifier in low temperature curing was not significant,but good adhesion could be achieved when the proportion of tackifier was 1.3%.(4) Considering both economic benefits and product performance,the optimal ratio for plasticizer w(Mesamoll) was 3% and w(DINP) was 27%.