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High heat-resistant rubber composite material for conveyor belt covering

A technology of composite materials and conveyor belts, which is applied in the direction of conveyors, transportation and packaging, etc., can solve the problems of affecting the service life of conveyor belts, poor self-adhesion and mutual adhesion, and low bonding strength between skeleton layer materials and covering layers, and achieves Excellent anti-aging cracking performance, good heat aging resistance, excellent mechanical properties and the effect of wear resistance

Inactive Publication Date: 2008-08-27
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above-mentioned patents all use binary ethylene propylene rubber or EPDM base material, and improve it to improve the performance of the covering layer. Viscosity and mutual adhesion (with other materials) are poor, resulting in the defect of low bonding strength between the skeleton layer material of the conveyor belt and the covering layer (rubber), which affects the service life of the conveyor belt

Method used

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  • High heat-resistant rubber composite material for conveyor belt covering

Examples

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Effect test

Embodiment 1

[0025] Embodiment 1: on the two-roll mill, add 100g EPDM rubber (commercially available EPDM1705) masticate, then add activator successively: zinc oxide 4g, magnesium oxide 2g and stearic acid 1g, N-4 (aniline Base phenyl) methacrylamide (NAPM) 2g, tackifier: magnesium methacrylate 10g, reinforcing carbon black: 60g, plasticizer: low molecular weight polybutadiene 10g, finally add cross-linking agent and cross-crossing aid Joint agent: 5 g of dicumyl peroxide (DCP) and 0.2 g of sulfur, and mix them uniformly on an open mill to obtain a rubber compound. The rubber compound was vulcanized at 160 °C to obtain a rubber composite. The mechanical properties, adhesive strength and wear resistance before and after aging are shown in Table 1.

Embodiment 2

[0026] Embodiment 2: On the two-roll mill, add 20g EPDM rubber (EPDM1705) and 80g ethylene-butylene copolymerized elastomer masticate, then add activator successively: zinc oxide 4g, magnesium oxide 8g and stearic acid 1g, N-4 (anilinophenyl) maleimide (MC) 2g, tackifier: zinc methacrylate 20g, reinforcing carbon black: 60g, plasticizer: low molecular weight polybutadiene 20g, Finally add cross-linking agent and co-cross-linking agent: 2,5-dimethyl-2,5-di-tert-butylperoxyhexane (double 25) 10g and sulfur 0.2g, mix uniformly on an open mill to obtain a rubber compound . The rubber compound was vulcanized at 160 °C to obtain a rubber composite. The mechanical properties, adhesive strength and wear resistance before and after aging are shown in Table 1.

Embodiment 3

[0027] Embodiment 3: On the two-roll mill, add 100g ethylene-octene copolymer elastomer (commercially available POE8180) masticate, then add activator successively: Zinc oxide 4g, magnesium oxide 12g and stearic acid 1g, N-4 (anilinophenyl) methacrylamide (NAPM) 4g, tackifier: magnesium methacrylate 20g, reinforcing carbon black: 60g, plasticizer: low molecular weight ethylene propylene copolymer 20g, finally add crosslinking agent and Auxiliary cross-linking agent: 14 g of benzoyl peroxide (BP) and 0.2 g of sulfur, mixed uniformly on an open mill to obtain a rubber compound. The rubber compound was vulcanized at 160 °C to obtain a rubber composite. The mechanical properties, adhesive strength and wear resistance before and after aging are shown in Table 1.

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Abstract

The invention relates to rubber composite material for high heat resistance conveyor belt covering layer, which comprises substrate rubber and relative addition auxiliary agent, and is characterized in that substrate rubber is metallocene low undersaturation EPT rubber, ethane-octene copolymerization elastomer (POE) or / and ethane-butene copolymerization elastomer, plasticizing agent in addition auxiliary agent is large molecular plasticizing agent with low molecular weight, anti-aging agent is response type anti-aging agent. The covering layer rubber composite material has excellent heat resistance aging property, abrasion resistance and adhesiveness property, since the invention adopts novel rubber substrate and the synergistic effect of anti-aging system, adhesion-promotion system and plasticization system which are compatible with the rubber substrate, thereby increasing the high temperature tolerance of conveyor belt, the long-term usage temperature can reach about 180 DEG C, and the viscosity of the conveyor belt and fabric layer all can reach to the standard of first-grade or quality products.

Description

technical field [0001] The invention relates to a high heat-resistant rubber composite material, which can be used as a covering layer material of a high-temperature-resistant conveyor belt. Background technique [0002] High heat-resistant conveyor belts are widely used in metallurgy, building materials, chemical industry and other industries, mainly used to transport high-temperature solid materials, such as sintered ore, cement clinker, dried cement, lime, urea and inorganic fertilizers, etc. 15% to 20% of the output [Rubber and Plastic Technology and Equipment, 2004, 30(10), 20-23]. The structure of the general conveyor belt includes the upper and lower covering layers (rubber), the middle skeleton layer (polyester fiber fabric, nylon fiber fabric, aramid fiber fabric, etc.), and the adhesive layer (rubber) between the middle skeleton layer and the covering layer. The main part, and the performance of the covering rubber is the key to determine the service life of the h...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08C08K13/02C08K3/04C08K3/22B65G15/32
Inventor 田明张运强张立群
Owner BEIJING UNIV OF CHEM TECH
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