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Method for improving performances of rubber roller apron

A rubber ring and performance technology, applied in the field of improving the performance of rubber rollers and rubber rings, can solve the problems of low production safety, insufficient performance improvement, low energy, etc., to achieve improved production safety, thorough cross-linking, and high production efficiency Effect

Inactive Publication Date: 2019-09-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve its performance, considering the coefficient of friction, Mao Meiliang of No. 1 Cotton Spinning Knitting Factory adopts the inner pattern to reduce the actual contact area between the surface of the apron and the upper and lower pins. Through this change, under the same pressure, the inner pattern apron The elastic deformation of the inner layer is larger than that of the smooth apron to improve the elasticity of the apron. In terms of rubber material, Xu Zhongqiang irradiates the surface with ultraviolet rays. The friction coefficient tends to increase compared with conventional acid treatment, and the performance is improved. However, the energy Low, and the performance improvement is not obvious enough. Ge Qionghua used γ-rays to irradiate the aprons and rubber rollers to improve the performance, showing an effect close to that of acid treatment, but the production safety is not high, and there are certain limitations in actual production.

Method used

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  • Method for improving performances of rubber roller apron
  • Method for improving performances of rubber roller apron
  • Method for improving performances of rubber roller apron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] raw material:

[0023]

[0024]

[0025] The first step: add magnesium oxide, white carbon black, stearic acid, accelerator TMTD, liquid SN antistatic agent, and nitrile rubber (acrylonitrile content 33%) into the internal mixer and mix, then add sulfur, TMPTMA again Re-smelting, filtering through a filter, and then kneading again evenly, extrusion molding through a feeding extruder, and then applying 30kGy dose of radiation to it through a 5Mev electron accelerator under normal pressure, the irradiation time is 2s, and the irradiation time is 2s. The temperature is 30°C to form a pre-vulcanized product;

[0026] Step 2: Put the pre-vulcanized product into a steam-type high-temperature and high-pressure vulcanization tank for vulcanization. The vulcanization temperature is 152°C, the vulcanization time is 43 minutes, and the pressure is 0.6 MPa to obtain the product.

Embodiment 2

[0028] raw material:

[0029]

[0030] The first step: add magnesium oxide, white carbon black, stearic acid, accelerator TMTD, liquid SN antistatic agent, and nitrile rubber (acrylonitrile content 33%) into the internal mixer and mix, then add sulfur, TMPTMA again Re-smelting, filtering through a filter, and then kneading again evenly, extrusion molding through a feeding extruder, and then applying 20kGy dose of radiation to it through a 5 Mev electron accelerator under normal pressure, the radiation temperature is 40°C, and the radiation temperature is 40°C. According to the time of 4s to form a pre-vulcanized product;

[0031] Step 2: Put the pre-vulcanized product into a steam-type high-temperature and high-pressure vulcanization tank for secondary vulcanization. The vulcanization temperature is 152°C, the vulcanization time is 43 minutes, and the pressure is 0.6 MPa to obtain the product.

Embodiment 3

[0033] raw material:

[0034]

[0035]

[0036] The first step: add magnesium oxide, white carbon black, stearic acid, accelerator TMTD, liquid SN antistatic agent, and nitrile rubber (acrylonitrile content 33%) into the internal mixer and mix, then add sulfur, TMPTMA again Re-smelting, filtering through a filter, and then kneading again evenly, extrusion molding through a feeding extruder, and then applying 10kGy dose of radiation to it through a 5 Mev electron accelerator under normal pressure, the radiation temperature is 50°C, and the radiation temperature is 50°C. According to the time of 5s to form a pre-vulcanized product;

[0037] Step 2: Put the pre-vulcanized product into a steam-type high-temperature and high-pressure vulcanization tank for secondary vulcanization. The vulcanization temperature is 152°C, the vulcanization time is 43 minutes, and the pressure is 0.6 MPa to obtain the product.

[0038] The product performance that embodiment 1~3 makes is shown ...

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Abstract

A method for improving the performances of rubber roller apron comprises the following steps: 1, vulcanizing formed nitrile butadiene rubber by an electron beam at an irradiation temperature of 25-100DEG C; 2, performing vulcanizing treatment by adopting a steam type vulcanizing tank at a vulcanization temperature of 130-180 DEG C under a pressure of 0-2 MPa for 20-220 min. The rubber roller apron prepared by the method has the advantages of improved elasticity and tensile strength, prolonged scorch time, good safety performance, and facilitation of future industrial production.

Description

technical field [0001] The invention relates to a method for improving the performance of rubber rollers and aprons, and belongs to the technical field of rubber vulcanization. Background technique [0002] During the spinning process, the apron and the rubber roller are frictionally driven by the rollers under pressure, and form a powerful jaw with the rollers to form a friction circle, which can effectively hold the strands and fibers, so as to keep the drafting smooth However, the holding force and friction force are directly proportional to the elasticity of the cots and aprons. Therefore, the spinning quality is closely related to the elasticity and tensile strength of the cots. Cots with high elasticity and high tensile strength can significantly improve the draft roller The gripping properties of the jaws have significant effects on improving yarn evenness and reducing yarn defects. [0003] Nitrile rubber is polymerized from butadiene and acrylonitrile monomers. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/28C08J3/24C08L9/02C08K3/22C08K3/36C08K5/09
CPCC08J3/24C08J3/28C08J2309/02C08K3/36C08K5/09C08K13/02C08K2003/222
Inventor 范雪荣佟楠楠王强余圆圆王平袁久刚徐进
Owner JIANGNAN UNIV