Monday, January 7, 2013

Sealant Application in the Automobile Industry

Common Car Adhesive Sealant

Adhesive sealant is also known as liquid gasket seal (such as steel pad, pad of paper, etc.). Compared with solid, it is easy to use, has good sealing performance and advantages, it is widely used in the automotive industry. Common automotive sealant glass has glue BETASEAL. It can be used to bond the windshield and rear window of the car, so that it can stick into one solid body. The use of glass, plastic completely abandon the traditional glass installed backward means making the glass supporting work is easy to operate and the degree of automation has greatly improved. Another glass glue sealant has good strength and wealth to the elastic compressive seismic performance; sealant BETAGVARD. The PVC matrix auto paint sealant is divided into the colorable and non-colorable two kinds. Its main role is to maintain the sealing of the entire body, cut off from the outside moisture, dust and smoke. In addition, such an adhesive sealant has the function of anti-corrosion, sound insulation as well as beautification of the car models. BETAGVARD colorable sealant can be used in low temperature and high temperature baking process, brushing in sealed externally is visible and the gap itself is not contaminated with dried topcoat.

Pouring Sealant

Automotive Adhesive Sealing Material Yet to be Developed

Currently, the domestic auto smt adhesive material has certain gap with foreign countries, as showed from the following aspects: First, the limited variety of adhesive sealant raw materials, many of them are substitutes or imported products, prices are high, lack of market competitiveness. The level of industrial technology of China's car industry in the use of adhesive sealing material, production scale, and the degree of product serialization is relatively backward, and it hinders the rapid development of technology. Not yet have the authoritative professional organization, it is difficult to draft the constitution, norms, standards, or exchange with foreign countries.

Adhesive Sealant in Window Glass

Since the single-component polyurethane adhesive is a moisture-reactive adhesive sealant, its construction and curing has special demands on the environment, usually the temperature of 18 to 40 °C, and the relative humidity is 55% to 65% will be appropriate. The temperature and humidity is too low, will reduce the adhesive curing reaction speed; while when the high temperature and humidity, curing reaction rate is fast, bubbles occur and reduce the adhesive strength and sealing effect. The single-component polyurethane adhesive sealant is usually used in conjunction with supporting cleaner, glass bottom glue and paint bottom glue to improve the adhesive strength and anti-aging properties. Various bottom gums are not only with single-component polyurethane adhesive between solid combination, and it should also have good adhesion with the sticky surface, because it plays a role as a bridge between the adherends sealant.

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This article is come from:http://www.industrialmachinery4u.com/sealant-application-in-the-automobile-industry.htm

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