Primer for high-load type driving belt as well as preparation method and use of primer

Abstract

The invention relates to primer for a high-load type driving belt. The primer is prepared from the following components in parts by weight: 90-110 parts of chloroprene rubber, 1-2 parts of polyvinyl alcohol fibers, 8-15 parts of reinforced fibers, 6-8 parts of a coupling agent, 50-90 parts of stuffing and 20-30 parts of metal oxide. Deflection times, under low-load and high-load using conditions,of the primer are more than or equal to 10000 times, a change rate of mechanical properties is 0-5%, amplitude of variation is not great, and ageing resistance is excellent, so that the primer is suitable for being used as the primer for the high-load type driving belt. Materials such as the polyvinyl alcohol fibers are led into the primer, so that the primer has a cooperative effect, has high tensile strength, and proper elongation at break and tear strength, and also can bear relatively strong impact force under a high-load using condition. The invention further discloses a novel processingprocess for the primer for the driving belt, and the process is simple, is environmentally friendly and has relatively strong controllability; and a primer product prepared by the process is stable inquality.

Description

technical field [0001] The invention relates to the field of rubber materials, in particular to a primer for high-load transmission belts and its preparation method and application. Background technique [0002] Rubber is an important industrial material that plays an important and irreplaceable role in production and life. Rubber can be divided into natural rubber and synthetic rubber according to the source. Natural rubber has better toughness and fatigue resistance, but other properties such as strength, Compared with synthetic rubber, the heat resistance and oil resistance are poor, so the functional rubber parts currently used are mostly made of synthetic rubber materials, such as nitrile rubber, neoprene rubber, butyl rubber, ethylene propylene rubber, etc. [0003] Neoprene has good adhesion and is an important rubber material for the bottom rubber of transmission belts. In addition, neoprene has good mechanical properties, as well as excellent oil resistance, heat re...

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Problems solved by technology

[0002] Rubber is an important industrial material that plays an important and irreplaceable role in production and life. Rubber can be divided into natural rubber and synthetic rubber according to the source. Natural rubber has better toughness and fatigue resistance, but other properties such as strength, Compared with synthetic rubber, the heat resistance and oil resistance are poor, so the functional rubber parts currently used are mostly made of synthetic rubber materials, such as nitrile rubber, neoprene rubber, butyl rubber, ethylene propylene rubber, etc.

[0003] Neoprene has good adhesion and is an important rubber material for the bottom rubber of transmission belts. In addition, neoprene has good mechanical properties, as well as excellent oil resistance, heat resistance, and chemical corrosion resistance. However, , the high-load performance of neoprene rubber, especially the poor flexural performance under high stress and strain, when used as a transmission belt primer, it is difficult to maintain its mechanical properties under high-load conditions. Therefore, now In the prior art, additives such as additives, fillers or reinforcing fibers are often used to enhance its performance under high-load conditions. For example, in CN107057145A, polyamide fibers and Viscose fiber is used to strengthen the high-load performance of rubber materials, and the fibers in it bear the main stress load, which improves the high-load performance of rubber materials. In CN104956000A, phenolic resin and rubber are attached to the surface of rubber products. Composition of carbon fiber thread, using the high strength of carbon fiber thread, the obtained rubber material has undergone tens of thousands of tensile tests with load, and the mechanical property retention rate can reach more than 80%. The aging resistance and flexing times are still low in the high-load environment, and the performance decline is still serious after long-term use

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