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| The skill of using automobile sealant |
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| The skill of using automobile sealant
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| Release time：2017.05.05 News source：Yuhuan Enrui Machinery Co., Ltd Browsing number： |
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Automotive sealing strip is one of the important parts of automobile, widely used for door and window, body, seat, sunroof, engine compartment and trunk and other parts, can be used in rubber production hinge installation of passenger baggage cabin door, also has other waterproof and sealing effect.
Classification of automobile sealant:
1, vulcanized rubber sealant
Generally three EPDM material. Comprehensive performance is excellent, with outstanding ozone resistance, excellent weather resistance, good resistance to high temperature, low temperature performance, outstanding chemical resistance, can be a variety of polar solutes, relatively small density. The disadvantage is that in general mineral oil and lubricating oil in the expansion of large, usually dark products. Use temperature range -60 ~ +150 C. With its wide application and excellent comprehensive performance, it has been recognized by domestic and foreign enterprises.
2, silicone rubber sealing strip
With high and low temperature characteristic, ozone resistance and weatherability; has excellent hydrophobicity and proper permeability; the insulating performance can reach the incomparable; food hygiene requirements of health level, can meet the requirements of various colors. The disadvantage is that the mechanical strength of the rubber material is the worst, not resistant to oil. Use temperature range -100 ~ +300 C. Can be applied to high temperature, cold, ultraviolet radiation and strong areas of high-rise buildings.
3, neoprene sealant (CR)
Compared with other special rubber, individual performance is poor, but the overall performance is good. It has excellent weather resistance, ozone resistance, heat aging resistance and oil resistance, solvent resistance, good chemical resistance and excellent flame resistance, good adhesion. The storage stability is poor, and the hardening phenomenon will occur during storage. Relative density. Generally black products. Used in oil, heat, acid and alkali resistant environment. Use temperature range -30 ~ +120 C.
4, nitrile rubber sealing strip
The main characteristics of oil resistance, solvent resistance, but not resistant to ketones, esters and chlorinated hydrocarbons and other media, elastic and mechanical properties are very good. The disadvantage is that ozone and oxidation in the aging crack, cold resistance, low temperature resistance.
5, thermoplastic elastomer sealant
Has good elasticity and excellent abrasion resistance, good oil resistance, wide range of adjustable hardness (shore A hardness 65 ~ 80 degrees), mechanical properties (tensile strength, elongation at break) superior corrosion resistance, cold resistance and chemical resistance of woven excellent, the price of raw materials is high. Recyclable materials. Use temperature range -60 ~ +80 C. It is suitable for the areas with strong earthquake, such as the earthquake prone areas, near the railway or the buildings with high power cranes, and strong ultraviolet radiation.
6, thermoplastic vulcanizate (TPV) sealant
The utility model has the advantages of flexibility and elasticity of rubber, can be produced by the plastic processing method, can not be cured, and can be recycled and reused. Is a wide range of materials, good heat resistance, cold resistance, relatively small density, oil resistance, solvent resistance and chloroprene rubber similar to the resistance to compression, permanent deformation and wear resistance is not good. Use temperature range -40 ~ +150 C. The utility model can be used for cold and medium and high buildings.
7, plasticized polyvinyl chloride (PPVC) sealant
Materials are cheap and easy to obtain, corrosion resistant, abrasion resistance, acid and alkali and various chemical media, burning resistance, high mechanical strength; the disadvantage is the complex system of internal plasticizer difficult to transfer, along with the extension of brittle and hard time, not lose elasticity, aging resistance, weather resistance and low temperature performance is poor. Generally dark products. The utility model is suitable for occasions where the light is not strong, the temperature change is not big, and the weather condition is not bad.
8, surface coating material
The utility model is characterized in that the surface of the sealing strip is coated with polyurethane, silicone, Teflon and other materials to replace the surface flocking of the traditional technology. The sealing strip after coating has good wear resistance and smoothness, especially the sealing strip coated with silica gel surface coating. The utility model is suitable for doors and windows with sliding doors and window sashes. Is a substitute for the traditional silicified tops. |
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