关键词: 低翘曲, 耐热, 聚丙烯, 移动空调, 风扇蜗壳

Abstract: With the deepening of the global “dual carbon” strategy, the material selection of household appliance components has become one of the key factors affecting the overall carbon footprint of products. Based on the significant low-carbon advantage of PP material over ABS, developed a modified PP material with excellent mechanical strength, heat resistance, and low molding warpage characteristics through the synergistic modification technology of glass fiber/talc powder. Its tensile strength, flexural strength, flexural modulus, and thermal deformation temperature are 47.5%, 35%, 100.5%, and 26.1% higher than heat-resistant ABS, respectively. By further combining the design of the snail shell structure with the regulation of the melt flow path, the warpage and deformation of the parts can be effectively improved. Reliability tests have confirmed that it can replace heat-resistant ABS for the snail shell of mobile air conditioning fans. Using this PP material to manufacture the snail shell can achieve a component weight reduction of about 4.3%, and reduce product costs and carbon footprint.

Key words: Low warpage, Heat-resistant, Polypropylene, Mobile air conditioning, Fan snail shell