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A kind of thermally conductive vulcanization bladder 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, high thermal conductivity, and improve dispersion

Active Publication Date: 2022-07-05
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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  • A kind of thermally conductive vulcanization bladder and preparation method thereof
  • A kind of thermally conductive vulcanization bladder and preparation method thereof

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preparation example Construction

[0053] An embodiment of the present invention provides a preparation method of a thermally conductive vulcanization bladder, comprising the following steps:

[0054] Step S100. According to the mass ratio of rubber main material: carbon black: thermal conductive filler: fiber filler: processing aid=100: (40-50): (10-20): (1-5): (3-6.5) A section of mixed rubber is prepared by refining;

[0055] Step S200. Add a coordination aid and a vulcanization aid to the first-stage mixed rubber in the step S100 and knead to prepare a second-stage mixed rubber;

[0056] Step S300. curing the second-stage rubber compound in the step S200 after filtering and tableting;

[0057] Step S400. injecting and vulcanizing the second-stage rubber compound after curing in the step S300;

[0058] Step S500. Obtain the thermally conductive vulcanization bladder;

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

[0060] In the step S200, the...

Embodiment 1

[0094] The present embodiment provides a preparation method of a thermally conductive 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℃ for 1~4h , after the reaction is completed, add water to dilute and adjust pH value=2, and obtain demethyl lignin after centrifugation, washing and drying;

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

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

[0098] Step S4. Mix acetylene carbon black and carbon black N330 at a mass ratio of acetylene carbon black:carbon black N330=2:...

Embodiment 2

[0110] The present embodiment provides a preparation method of a thermally conductive vulcanized bladder, and its implementation conditions and steps are the same as those in Example 1, but the formula is adjusted as follows:

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

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

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

[0114] In step S5, the boron-nitrogen polymer is added in the sodium hydroxide solution with a mass fraction of 20% at a mass ratio of 100:5;

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

[0116] In step S7, the secondary treatment boron n...

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Abstract

The invention relates to the technical field of vulcanization bladders, in particular to a thermally conductive vulcanization bladder and a preparation method thereof, comprising the following steps: Step S100. According to rubber main materials: carbon black: thermally conductive filler: fiber filler: processing aid=100: (40~ 50): (10-20): (1-5): (3-6.5) mass ratios to prepare a first-stage mixed rubber; step S200. Add coordination to the first-stage mixed rubber in the step S200 The auxiliary agent and the vulcanization auxiliary are mixed to prepare the second-stage mixed rubber; Step S300. The second-stage mixed rubber in the step S200 is filtered and pressed into tablets and then matured; Step S400. After the curing in the step S300 The second-stage rubber compound is injected and vulcanized; step S400. Obtain the thermally conductive vulcanization bladder. The thermally conductive vulcanization bladder provided by the invention has high thermal conductivity, good mechanical properties, fast vulcanization speed and good comprehensive use performance.

Description

technical field [0001] The invention relates to the technical field of vulcanization bladders, in particular to a thermally conductive vulcanization bladder and a preparation method thereof. Background technique [0002] The vulcanization bladder is a hollow thin-walled rubber product of the tire vulcanizer, which is used to load the inner cavity of the tire blank to be vulcanized and then pass the heating medium, and cooperate with the vulcanizer for shaping and vulcanization. [0003] Put the formed embryo into the vulcanizing machine, 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, the embryo absorbs heat, and the molecular chains generate cross-links. After the cross-linking reaches a certain level, the embryo becomes an elastomer, that is, a tire. The outer side of the tire relies on the tire steel mold for heat transfer, and the inner side relies on the tire...

Claims

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Application Information

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Patent Type & Authority Patents(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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