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Polyurethane rubber roller and preparation method thereof

A technology of polyurethane and rubber rollers, applied in the field of rubber rollers, can solve the problems of poor heat resistance, wear resistance and pressure change performance, and achieve the effects of high wear resistance and pressure change performance, good resilience, and good heat resistance

Pending Publication Date: 2021-09-07
广东鹏德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a polyurethane rubber roller and its preparation method, aiming to solve the problems of poor heat resistance, wear resistance and pressure change performance of polyurethane rubber rollers in the prior art

Method used

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  • Polyurethane rubber roller and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A polyurethane rubber roller is composed of the following components in parts by weight: 90 parts of polyether polyol, 15 parts of isocyanate compound, 5 parts of graphite, 5 parts of dioctyl adipate, and 15 parts of di-o-chloroaniline methane.

[0024] The preparation method of embodiment 1 comprises the following steps:

[0025] (1) Dehydration of polyether polyol, the temperature of dehydration is 120°C, and the time is 10 hours, adding isocyanate compound, the temperature is controlled at 150°C, mixed reaction to prepare semi-prepolymer;

[0026] (2) Graphite is dispersed by dioctyl adipate, added in the semi-prepolymer of step (1) gained;

[0027] (3) Add di-o-chloroaniline methane into the mixture of step (2) and stir evenly, react for 3 hours, and remove it under vacuum at -0.09MPa until there is no bubble, inject it into the mold, inject it into the mold, and vulcanize for 20 hours to release the mold.

[0028] The molecular weight of the polyether polyol is 80...

Embodiment 2

[0031] A polyurethane rubber roller is composed of the following components in parts by weight: 70 parts of polyether polyol, 10 parts of isocyanate compound, 2 parts of graphite, 10 parts of dioctyl adipate, and 25 parts of di-o-chloroaniline methane.

[0032] The preparation method of embodiment 2 comprises the following steps:

[0033] (1) Dehydration of polyether polyol, the temperature of dehydration is 110 DEG C, the time is 13 hours, adding isocyanate compound, the temperature is controlled at 120 DEG C, and mixed reaction is obtained semi-prepolymer;

[0034] (2) Graphite is dispersed by dioctyl adipate, added in the semi-prepolymer of step (1) gained;

[0035] (3) Add di-o-chloroaniline methane into the mixture of step (2) and stir evenly, react for 5 hours, and remove it under -0.1MPa vacuum until there is no bubble, inject it into the mold, inject it into the mold, vulcanize for 14 hours and release the mold.

[0036] The molecular weight of the polyether polyol is...

Embodiment 3

[0039] A polyurethane rubber roller is composed of the following components in parts by weight: 80 parts of polyether polyol, 13 parts of isocyanate compound, 3 parts of graphite, 8 parts of dioctyl adipate, and 20 parts of di-o-chloroaniline methane.

[0040] The preparation method of embodiment 3, comprises the following steps:

[0041] (1) Dehydration of polyether polyol, the dehydration temperature is 115 ° C, the time is 12 hours, adding isocyanate compound, the temperature is controlled at 130 ° C, mixed reaction to obtain a semi-prepolymer;

[0042] (2) Graphite is dispersed by dioctyl adipate, added in the semi-prepolymer of step (1) gained;

[0043] (3) Add di-o-chloroaniline methane into the mixture of step (2) and stir evenly, react for 4 hours, and remove it under -0.1MPa vacuum until there is no bubble, inject it into the mold, inject it into the mold, vulcanize for 18 hours and release the mold.

[0044] The molecular weight of the polyether polyol is 1000, and ...

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Abstract

The invention discloses a polyurethane rubber roller which is prepared from the following components in parts by weight: 70-90 parts of polyhydric alcohol, 10-15 parts of an isocyanate compound, 2-5 parts of filler, 5-10 parts of dioctyl adipate and 15-25 parts of di-o-chloroaniline methane. According to the invention, the polyether polyol and the isocyanate compound are used as raw materials, the di-o-chloroaniline methane is added, so that the prepared polyurethane rubber roller has excellent elasticity, good rebound resilience and good pressure change performance; and the graphite is added, so that the polyurethane rubber roller has the characteristics of good heat resistance, wear resistance and high pressure change performance.

Description

technical field [0001] The invention relates to the technical field of rubber rollers, in particular to a polyurethane rubber roller and a preparation method thereof. Background technique [0002] The rubber roller is a roller-shaped product made of metal or other materials as the core and covered with rubber by vulcanization. It can be divided into papermaking rubber rollers, printing and dyeing rubber rollers, printing rubber rollers, hulling rubber rollers, and metallurgical rubber rollers. According to the surface shape, it can be divided into: flat roller, patterned rubber roller and ethylene-propylene rubber roller, and can be divided into: butyl rubber roller, nitrile rubber roller, polyurethane rubber roller and silicone rubber roller etc., and the heat resistance, wear resistance and pressure change performance of existing polyurethane rubber rollers still need to be improved. Contents of the invention [0003] The object of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K3/04C08K5/11C08K5/18C08G18/48C08G18/76
CPCC08K3/04C08K5/11C08K5/18C08G18/7671C08G18/4837C08G18/4854C08L2201/08C08L75/08
Inventor 艾永德
Owner 广东鹏德新材料科技有限公司
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