Silica gel film plating windshield wiper rubber strip and preparation method thereof

Abstract

The invention relates to a silica gel film plating windshield wiper rubber strip and a preparation method thereof. The silica gel film plating windshield wiper rubber strip is prepared from the following ingredients in parts by weight: 30 to 50 parts of 70-DEG C silicon rubber raw materials, 10 to 30 parts of 60-DEG C silicon rubber raw materials, 20 to 40 parts of 60-DEG C powder rubber raw materials, 7 to 14 parts of talcum powder, 1 to 1.5 parts of simethicone, 1 to 1.7 parts of color masterbatch and 2 to 4 parts of vulcanizing agents. The silica gel film plating windshield wiper rubber strip has the advantages that the formula is simple; the preparation cost is low; the excellent mechanical intensity, ozone resistance and atmosphere aging resistance performance are realized; the friction coefficient is low; the use temperature is wide; the long-time use can be realized at -40 DEG C (or lower temperature) to +100 DEG C (or higher temperature).

Description

technical field [0001] The invention relates to the field of wiper production, in particular to a silicone-coated wiper rubber strip and a preparation method thereof. Background technique [0002] Wipers are common accessories on automobiles. The wipers with excellent performance must have cold and high temperature resistance, be able to be used in different regions and climates, and also have anti-ozone, ultraviolet aging and wiping wear resistance; at the same time, the rubber strips used for wipers It needs to have the characteristics of low friction coefficient on the glass surface and make the wiper smooth and smooth. To meet these conditions at the same time is a world-wide problem in the research of wiper rubber strips. [0003] Patent application CN 104292628 discloses a car wiper material and its preparation method. The raw materials include PP, montmorillonite, EPDM, molybdenum disulfide, DBS, decabromodiphenyl ether, coupling agent, titanium dioxide, talcum powder...

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Problems solved by technology

[0003] Patent application CN 104292628 discloses a car wiper material and its preparation method. The raw materials include PP, montmorillonite, EPDM, molybdenum disulfide, DBS, decabromodiphenyl ether, coupling agent, titanium dioxide, talcum powder, azo Diformamide, antioxidant, dicumyl peroxide, SEP, LLDPE and PS, the sizing material replaces the natural rubber in the existing formula or the combination of natural rubber and other synthetic rubbers with methyl vinyl silicone rubber, High-strength wiper materials are obtained, but their friction coefficient is very high. Repeated friction with the car glass will not only consume the rubber strips, but also easily cause the windows to blur, affecting sightlines and driving safety.

[0004] In this field, the coefficient of friction between the surface of all rubber materials and the glass surface is very high, so that the wiper cannot be lubricated and wiped, so the wiper must be treated with a special process to obtain a suitable lubricity, and the lubricity is modified on the surface of silica gel The difficulty is very high, the reason is that the silicone surface is difficult to obtain a firm bond with the lubricant

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