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Reinforced short fiber master batch for rubber transmission belt and preparation method

A short fiber and transmission belt technology, applied in the field of functional fiber masterbatch and its preparation, can solve the problems of complex pretreatment process, insufficient heat resistance, poor interface bonding, etc. Effect

Active Publication Date: 2019-08-09
陇川县百信胶带有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a kind of reinforced staple fiber masterbatch and preparation method for rubber transmission belt, solve the poor interface bonding with the rubber matrix when aramid short fiber reinforced rubber in the prior art, Insufficient heat resistance and complex pretreatment process, the provided reinforced short fibers for rubber transmission belts have the advantages of uniform dispersion, improved bonding with the rubber matrix, improved tensile strength, elongation, and bonding strength of rubber, and use Advantages of longevity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]A reinforced short fiber masterbatch for rubber transmission belts, said reinforced short fiber masterbatch for rubber transmission belts consists of the following components by weight: 40 parts of modified aramid short fibers, 15 parts of polyolefin elastomer POE , 20 parts of neoprene rubber, 3 parts of silane coupling agent, 5 parts of aromatic oil, 10 parts of 2500 mesh talcum powder, 3 parts of stearic acid, 1 part of anti-aging agent DNP;

[0034] The modified aramid short fiber is an aramid short fiber whose surface is coated with a calcium silicate hard shell.

[0035] The preparation method of the above-mentioned reinforced staple fiber masterbatch for rubber transmission belts comprises the following steps:

[0036] Step 1. Immerse short aramid fibers with a length of 2 mm in a saturated solution of calcium hydroxide, keep it at a temperature of 80° C. for 60 minutes, and then immerse it in a sodium silicate solution. The mass concentration of the solute is 40%...

Embodiment 2

[0042] A reinforced short fiber masterbatch for rubber transmission belts, said reinforced short fiber masterbatch for rubber transmission belts consists of the following components by weight: 60 parts of modified aramid short fibers, 30 parts of polyolefin elastomer POE , 30 parts of neoprene, 8 parts of silane coupling agent, 10 parts of aromatic oil, 20 parts of 2500 mesh silicon dioxide, 8 parts of stearic acid, 5 parts of anti-aging agent NBC;

[0043] The modified aramid short fiber is an aramid short fiber whose surface is coated with a hard aluminum silicate shell.

[0044] The preparation method of the above-mentioned reinforced staple fiber masterbatch for rubber transmission belts comprises the following steps:

[0045] Step 1. Immerse short aramid fibers with a length of 2mm in a saturated solution of aluminum hydroxide, keep it at a temperature of 50°C for 30 minutes, and then immerse it in a sodium silicate solution with a mass concentration of solute of 40%. Ke...

Embodiment 3

[0051] A reinforced short fiber masterbatch for rubber transmission belts, said reinforced short fiber masterbatch for rubber transmission belts consists of the following components by weight: 50 parts of modified aramid short fibers, 20 parts of polyolefin elastomer POE , 25 parts of neoprene rubber, 3-8 parts of silane coupling agent, 5-10 parts of aromatic oil, 15 parts of 2500 mesh talcum powder, 5 parts of stearic acid, 3 parts of anti-aging agent DNP;

[0052] The modified aramid short fiber is an aramid short fiber whose surface is coated with a calcium silicate hard shell.

[0053] The preparation method of the above-mentioned reinforced staple fiber masterbatch for rubber transmission belts comprises the following steps:

[0054] Step 1. Immerse the short aramid fiber with a length of 2 mm in a saturated solution of calcium hydroxide, keep it at a temperature of 60°C for 50 minutes, and then immerse it in a sodium silicate solution with a mass concentration of solute ...

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Abstract

The invention relates to the technical field of a functional fiber master batch and a preparation method thereof, in particular to a reinforced short fiber master batch for a rubber transmission beltand a preparation method. The master batch is prepared from modified aramid short fibers, a polyolefin elastomer, rubber, a coupling agent, aromatic oil, a reinforced modified filling agent, a plasticizer and an antiager. The preparation method comprises the steps that the aramid short fibers are soaked in a metal hydroxide solution and then soaked in a soluble silicate solution, through repeatedwetting, the aramid short fibers with the surfaces wrapped by hard silicate shell layers are formed, dispersed in the coupling agent and subjected to standing, then other raw materials are added for refining, a rubber material is prilled through a twin-screw extruder, and the reinforced short fiber master batch for the rubber transmission belt is obtained. According to the reinforced short fiber master batch, the problems of poor interface bonding and low heat resistance of the aramid short fibers and a rubber matrix during rubber reinforcement in the prior art are solved, and the reinforced short fiber master batch has the advantages of being even in dispersion, high in bonding force, tensile strength and bonding strength and long in service life.

Description

technical field [0001] The invention relates to the technical field of functional fiber masterbatch and its preparation method, in particular to a reinforced short fiber masterbatch for rubber transmission belts and its preparation method. Background technique [0002] High temperature resistant transmission belt is made of multi-layer rubber cotton sail (polyester cotton cloth) or polyester canvas covered with high temperature resistant or heat resistant rubber, bonded together by high temperature vulcanization, widely used in metallurgy, casting, sintering, coking, building materials and other industries The relatively harsh high-temperature working environment mainly uses high-temperature solid materials produced in the production process of sintered ore, coke and cement to drive. With the rapid development of the domestic economy, the scale of ore, steel, coal mines and other enterprises has gradually expanded, and the output has increased. The performance of ordinary tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L23/16C08L77/10C08L23/08C08L11/00C08L91/00C08K13/02C08K3/34C08K5/09C08K5/18C08K3/22C08K3/04C08K3/36C08J3/22C08J5/06C08J5/10D06M11/79B29C35/02D06M101/36
CPCC08J3/226C08J5/06C08J5/10D06M11/79B29C35/02C08J2323/28C08J2423/16C08J2477/10C08J2423/08C08J2411/00C08J2491/00C08K13/02C08K3/34C08K5/09C08K5/18C08K2003/2296C08K3/04C08K3/36D06M2101/36
Inventor 汤天文
Owner 陇川县百信胶带有限公司
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