GMT composite material automobile roof and preparation method thereof

By adopting GMT composite car roof, the problem of thermal aging of PU substrates under high temperature conditions is solved, and better mechanical properties, antibacterial properties and riding comfort are achieved.

CN119749001AActive Publication Date: 2025-04-04YANTAI ZHENGHAI HIGH TECH
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Patent Information

Application Number
CN202510258357.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2025-04-04
Estimated Expiration
2045-03-06

AI Technical Summary

Technical Problem

PU substrate car roof is prone to thermal aging when exposed to sunlight for a long time during high temperatures or long-term exposure, resulting in sticky surfaces, affecting aesthetics and service life.

Method used

The GMT composite car roof is used, including the GMT composite sheet layer, hot melt adhesive layer and fabric layer. The GMT composite sheet layer is composed of composite fiber felt, modified bamboo fiber, tea tree oil, etc., and has excellent mechanical properties, antibacterial properties and sound insulation properties.

Benefits of technology

GMT composite car roof has good mechanical properties, wear resistance and antibacterial properties, which can effectively block noise, improve riding comfort, and show better stability and durability under high temperature conditions.

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Abstract

The invention belongs to the technical field of automobile parts, and particularly discloses a GMT composite material automobile roof and a preparation method thereof. The GMT composite material automobile roof comprises a GMT composite board layer, a hot melt adhesive layer and a fabric layer, and is characterized in that the GMT composite board layer comprises the following components in parts by weight; comprising the following raw materials: 90-100 parts of composite fiber felt, 22-30 parts of modified bamboo fiber, 3-5 parts of tea tree oil, 1-2 parts of sodium tripolyphosphate, 2-4 parts of beta-glycerophosphate disodium, 0.5-0.8 part of lecithin, 15-20 parts of modified talcum powder, 4-6 parts of an expandable microsphere foaming agent and 190-200 parts of deionized water. The GMT composite material automobile ceiling prepared in the invention has excellent mechanical strength, durability and aging resistance, can provide mechanical protection for parts, and prolongs the service life of the automobile ceiling.
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