The bonding and sealing of automotive windshields requires very strict requirements for adhesives with high strength, excellent displacement and weatherability. In the automotive industry, polyurethane sealants are used in a wide range of applications for the bonding of windshields.
1.Why choose polyurethane sealants?
As a high-performance, high-strength flexible sealant, polyurethane sealants are able to withstand bumps, vibrations and impacts during automobile driving and prevent the glass from falling off. This kind of sealant is mostly a one-component sealant, no need to mix, suitable for standard glue gun, construction is convenient. Secondly, polyurethane sealants are moisture cured at room temperature, reacting with moisture to form a permanent elastomer that creates an effective seal between the windshield and the body. In addition, polyurethane sealants have excellent weatherability, UV resistance and high and low temperature resistance, and are able to maintain their performance for a long time without being affected by adverse weather conditions, and will not lose their elasticity and adhesion due to high or low temperatures.
2. 5 FAQ about Urethane Windshield Sealant You Must Know
(1) What are the advantages of polyurethane sealant compared with other sealing materials?
Traditional sealing strip, poor sealing, easy to deform. Silicone sealant has poor adhesion and vibration resistance. Polyurethane sealant has higher strength, excellent weatherability and durability, which can effectively improve the rigidity and safety of the body.
(2) Are polyurethane sealants suitable for all types of automotive glass?
Yes, it is suitable for sealing most types of automotive windshields, including windshields and side windshields.
(3) How can I tell if a polyurethane sealant is fully cured and safe to drive?
According to the manufacturer’s recommendations, it is usually safe to drive after the initial cure, but full cure may take longer.
(4) What are the storage conditions and shelf life of urethane sealant for auto glass?
They should be stored in a cool, dry place out of direct sunlight. Shelf life is 9 months.
(5) What is the curing time of polyurethane auto glass sealant?
Generally speaking, the curing time of polyurethane windshield sealants is about 24 hours. But it depends on environmental factors such as temperature and humidity.