The key to improving the endurance of new energy vehicles lies in lightweighting – industry data shows that for every 10% weight reduction of the vehicle, the endurance can be increased by 6%-8%. This demand has pushed PC/ABS alloy to become the focus of domestic material technology breakthroughs. The automotive-grade flame-retardant PC material developed by an East China enterprise has passed the UL94 V-0 certification and has been successfully applied to the battery pack cover, reducing the weight of the shell by 40% while maintaining a heat deformation temperature of 135°C. More noteworthy is its laser welding PC technology, which optimizes the distribution of glass fibers to achieve a laser transmittance of 45%, increases the welding strength to 25MPa, and increases the production efficiency of the battery sealing cover by 50%.
In the field of lightweighting of car windows, a Guangdong optical enterprise has made a breakthrough in large-size PC glass forming technology. The use of chemical tempering technology instead of traditional hot bending has shortened the production cycle of panoramic sunroofs from 12 weeks to 4 weeks, reduced costs by 35%, and achieved impact resistance 200 times that of ordinary glass. The material has been applied to the rear windshields of many new energy vehicle models, with a light transmittance of 91% and a UV blocking rate of over 99%. The charging pile shell has ushered in the innovation of weather-resistant PC/ASA alloy. The product of a joint venture material factory maintains 58KJ/m² of low-temperature impact strength at -40℃, solving the problem of cracking in the severe cold environment in the north.
According to industry reports, the penetration rate of automotive PC alloys will exceed 30% in 2025. Domestic materials are moving from substitution to leadership: a light-transmitting conductive PC film developed by a Sichuan company integrates heating and radar sensing functions and has passed the road test of autonomous driving; the recycled PC alloy developed by a Zhejiang company contains 30% recycled materials, reducing carbon emissions by 50% while maintaining 90% of the original performance. These innovations keep the cost of lightweighting a single vehicle within 80 yuan/kg, accelerating the popularization of electrification.
