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Heat-conducting vulcanized capsule and preparation method thereof

A technology of vulcanization bladders and heat-conducting fillers, applied in chemical instruments and methods, heat exchange materials, etc., can solve problems affecting the service life of vulcanization bladders, achieve good comprehensive performance, reduce contact thermal resistance, and improve dispersibility

Active Publication Date: 2021-04-30
YONGYI RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the production and processing of vulcanized bladders, the vulcanization process itself is a process in which the physical and chemical properties of rubber change. Through a series of complex chemical cross-linking processes, unvulcanized rubber becomes vulcanized rubber, and then from plastic to elastic. Therefore, adding a large amount of filling materials in the vulcanization bladder will cause the tensile strength, tear resistance, elongation, hardness, strength, elasticity and constant elongation of the rubber material. Stress and other product indicators, thus affecting the service life of the curing bladder

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0053] Embodiments of the present invention provide a method for preparing a heat-conducting vulcanization bladder, comprising the following steps:

[0054] Step S100. According to the mass ratio of rubber main material: carbon black: thermally conductive filler: fiber filler: processing aid = 100: (40-50): (10-20): (1-5): (3-6.5) Refining to prepare a mixed rubber;

[0055] Step S200. Adding a coordination aid and a vulcanization aid to the first-stage rubber compound in the step S200 and mixing to prepare a second-stage rubber compound;

[0056] Step S300. Maturing the second-stage compound rubber in the step S200 after filtering and pressing into tablets;

[0057] Step S400. Injection vulcanization of the second-stage mixed rubber cured in the step S300;

[0058] Step S400. Obtain the heat-conducting vulcanization bladder;

[0059] The coordination aid described in the step S200 is at least one of zinc stearate and zinc acrylate;

[0060] The vulcanization aid in the st...

Embodiment 1

[0094] This embodiment provides a method for preparing a heat-conducting vulcanization bladder, comprising the following steps:

[0095] Step S1. According to the mass ratio of phenol: lignin: hydrogen bromide solution = 100:10:2, mix phenol, lignin and hydrogen bromide solution with a mass fraction of 45%, and react in microwave at 80-120°C for 1-4 hours After the reaction is completed, add water to dilute and adjust the pH value to 2, centrifuge, wash and dry to obtain demethylated lignin;

[0096] Step S2. Mix the delignified lignin in step S1 with bromobutyl rubber in a mass ratio of 1:100, and knead at 70-110°C for 5-20 minutes to obtain modified bromobutyl rubber;

[0097] Step S3. Add butyl rubber to the modified bromobutyl rubber in step S2 at a mass ratio of 10:90, and banbury at 130-150° C. to obtain the main rubber material;

[0098] Step S4. Acetylene carbon black and carbon black N330 are mixed at room temperature to obtain carbon black according to the mass rati...

Embodiment 2

[0110] This embodiment provides a method for preparing a heat-conducting vulcanization capsule, the conditions and steps of which are the same as in Example 1, but the formula is adjusted as follows:

[0111] In step S1, mixing according to the mass ratio of phenol: lignin: hydrogen bromide solution = 100:50:10;

[0112] In step S2, delignin is mixed with bromobutyl rubber in a mass ratio of 4:100;

[0113] In step S3, the modified brominated butyl rubber is added to butyl rubber in a mass ratio of 50:50;

[0114] In step S5, boron nitrogen polymers are added into the sodium hydroxide solution with a mass fraction of 20% at a mass ratio of 100:5;

[0115] In step S6, a silane coupling agent is added to the ethanol solution with a mass fraction greater than 95% at a mass ratio of 100:0.15, and a boron-nitrogen polymer is added to the mixed solution at a mass ratio of 100:10;

[0116] In step S7, the secondary treated boron-nitrogen polymer and dimethylformamide are mixed in a...

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Abstract

The invention relates to the technical field of vulcanized capsules, in particular to a heat-conducting vulcanized capsule and a preparation method thereof. The preparation method comprises the following steps: step S100, mixing a rubber main material, carbon black, a heat-conducting filler, a fiber filler and a processing aid according to a mass ratio of 100: (40-50): (10-20): (1-5): (3-6.5) to prepare a section of a rubber compound; step S200, adding a coordination aid and a vulcanization aid into the first-stage rubber compound obtained in the step S100, and conducting mixing to prepare a second-stage rubber compound; step S300, filtering and tabletting the second-stage rubber compound obtained in the step S200, and then conducting curing; step S400, injecting and vulcanizing the second-stage rubber compound cured in the step S300; and step S400, acquiring the heat-conducting vulcanized capsule. The heat-conducting vulcanized capsule provided by the invention is high in heat conductivity, good in mechanical properties and high in vulcanization speed, and has good comprehensive use performance.

Description

technical field [0001] The invention relates to the technical field of vulcanization bladders, in particular to a heat-conducting vulcanization bladder and a preparation method thereof. Background technique [0002] The vulcanizing bladder is a hollow thin-walled rubber product of the tire vulcanizing machine, which is used to fill the inner cavity of the green tire to be vulcanized and then pass through the heating medium, and cooperate with the vulcanizing machine to carry out shaping and vulcanization operations. [0003] Put the finished embryo into the vulcanizer, and vulcanize it under a certain temperature, time and pressure. The vulcanization is to transfer heat from the inside and outside of the embryo to the embryo. After the cross-linking reaches a certain level, the embryo becomes an elastic body, which is a tire. The outer side of the green tire relies on the tire steel mold for heat transfer, and the inner side relies on the tire curing bladder for heat transf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L97/00C08L77/10C08L61/06C08K3/04C08K5/09C08K3/22C08K5/098C08K9/02C08K9/06C08K3/38C08K13/06C09K5/14
CPCC08L23/283C09K5/14C08L2205/035C08K2003/2296C08K2003/385C08L2205/16C08L97/005C08L77/10C08L61/06C08K3/04C08K5/09C08K3/22C08K5/098C08K9/02C08K9/06C08K3/38C08K13/06
Inventor 赵会岩赵海林范屏张学永刘涛
Owner YONGYI RUBBER CO LTD
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