生物基高分子材料改性传统热熔型标线涂料的制备及其性能研究

Bio-based Polymer Materials Modified Traditional Hot-melt Marking Paint and Its Properties

针对传统热熔型标线涂料易开裂脱落等问题,以生物基高分子材料聚己内酯和聚乳酸作为传统热熔型道路标线涂料成膜物C_(5)石油树脂的改性剂,采用标线涂料常规检测手段以及表面张力和黏聚力测试方法,对成膜物性能和涂料性能进行了系统研究,探索了生物基高分子材料在提高涂料黏附性和耐久性等方面的潜力。结果表明:改性后C_(5)石油树脂的相对分子质量大幅度提高,相对分子质量分布明显变窄,特性黏数增加;添加生物基高分子材料之后涂料的各项性能均符合相关行业标准,且性能优异。生物基高分子材料作为改性剂能显著降低成膜物和涂料的表面张力,提高涂料与基材的黏附性,解决传统涂料易脱落易开裂等问题。

Aiming at the problems that traditional hot-melt road marking paints(HMRMP)were easy to crack and fall off,we applied the bio-based polymer materials,polycaprolactone and polylactic acid,as the additive to enhance the performance of traditional HMRMP. We systematically investigated the film-forming and coating properties by using conventional testing methods for marking coatings and surface tension and cohesion testing methods,and explored the potential of bio-based polymer materials in improving coating adhesion and durability. The results showed that,after modification,the molecular weight of C_(5)petroleum resin increased significantly,molecular weight distribution became narrower and the intrinsic viscosity increased as well. The performance of the coating had been greatly improved after the addition of bio-based polymer materials and meets or exceeds relevant industry standards. The bio-based polymer materials as modifiers could significantly reduce the surface tension of film formers and coatings,improve the adhesion between coatings and substrates,and solve problems such as easy peeling and cracking of traditional coating.