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Repair adhesive cement for tire curing bladders as well as preparation method and use methods of repair adhesive cement

A technology for tire vulcanization and repairing glue, which is applied to the bonding method of adhesive heating, adhesives, epoxy resin glue, etc. The effect of improving thermal conductivity, improving heat resistance, and increasing operating time

Active Publication Date: 2022-01-04
山东永誉橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vulcanizing bladders are indispensable in tire production, and their consumption is also an important part of the tire manufacturing cost. Damage to the curing bladders can lead to cracks, toe fillets and lack of rubber, and in severe cases, appearance quality defects such as delamination , resulting in waste of vulcanized tires, therefore, the vulcanizing bladder must be replaced in time when it is damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a method for preparing tire vulcanization bladder repair glue, comprising the following steps:

[0058] Step S100, dispersing the natural attapulgite in deionized water, stirring for 5 to 10 minutes with the aid of ultrasound at 40 KHz to 50 KHz through an ultrasonic disperser, and obtaining clean attapulgite after vacuum drying;

[0059] Step S200, after heating bisphenol A epoxy resin E44 to 150-160°C, slowly add hexamethylene diisocyanate and 2,4,6-tris(dimethylaminomethyl)phenol under stirring, React for 5-6 hours to obtain isocyanate-modified epoxy resin; the mass ratio of bisphenol A type epoxy resin E44, hexamethylene diisocyanate and 2,4,6-tris(dimethylaminomethyl)phenol is 140:60:1;

[0060] Step S300, after mixing and stirring the isocyanate-modified epoxy resin and ethyl acetate at room temperature evenly, add the clean attapulgite obtained in step S100, and stir for 30-60 minutes with the aid of ultrasound at 40KHz-50KHz through an ...

Embodiment 2

[0068] This embodiment provides a preparation method of repair mortar for tire vulcanization bladders. During the preparation process, the attapulgite is preactivated, including the following steps:

[0069] Step S100, dispersing the natural attapulgite in deionized water, stirring for 5 to 10 minutes with the aid of ultrasound at 40 KHz to 50 KHz through an ultrasonic disperser, and obtaining clean attapulgite after vacuum drying;

[0070] Carry out preactivation to described clean attapulgite, specifically comprise the following steps:

[0071] Step S110, pass the clean attapulgite through a 300-500 mesh sieve and then immerse it in a dilute hydrochloric acid solution with a concentration of 0.5-1wt%, pass it through an ultrasonic disperser, and stir for 1-2 hours with the aid of 40KHz-50KHz ultrasound, and use Wash with ionic water until neutral, then vacuum dry at 100-120°C to obtain acid-modified attapulgite;

[0072] Step S120, put the acid-modified attapulgite obtained...

Embodiment 3

[0082] This embodiment provides a method for preparing tire vulcanization bladder repair glue, comprising the following steps:

[0083] Step S100, dispersing the natural attapulgite in deionized water, stirring for 5 to 10 minutes with the aid of ultrasound at 40 KHz to 50 KHz through an ultrasonic disperser, and obtaining clean attapulgite after vacuum drying;

[0084] Carry out preactivation to described clean attapulgite, specifically comprise the following steps:

[0085] Step S110, pass the clean attapulgite through a 300-500 mesh sieve and then immerse it in a dilute hydrochloric acid solution with a concentration of 0.5-1wt%, pass it through an ultrasonic disperser, and stir for 1-2 hours with the aid of 40KHz-50KHz ultrasound, and use Wash with ionic water until neutral, then vacuum dry at 100-120°C to obtain acid-modified attapulgite;

[0086] Step S120, put the acid-modified attapulgite obtained in step S110 into an ion beam irradiation device for ion beam bombardme...

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PUM

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Abstract

The invention relates to the technical field of tire curing bladders, in particular to repair adhesive cement for tire curing bladders and preparation and use methods thereof. The preparation method specifically comprises the following steps: step S100, cleaning natural attapulgite to obtain clean attapulgite; step S200, subjecting bisphenol A type epoxy resin and diisocyanate to a reaction so as to obtain isocyanate modified epoxy resin; step S300, mixing the isocyanate modified epoxy resin with clean attapulgite to obtain attapulgite / epoxy resin composite particles; step S400, mixing halogenated rubber, the attapulgite / epoxy resin composite particles, hexagonal boron nitride and sulfur to obtain a rubber compound; step S500, carrying out a reaction on alicyclic polyol, alicyclic polybasic acid and diisocyanate to obtain a polyurethane prepolymer; and step S600, mixing the rubber compound, ethyl acetate and the polyurethane prepolymer to obtain the repair adhesive cement. The repair adhesive cement provided by the invention is high in bonding strength, good in high temperature resistance, good in toughness and good in thermal conductivity.

Description

technical field [0001] The invention relates to the technical field of tire vulcanization bladders, in particular to a repair glue for tire vulcanization bladders and a preparation and use method thereof. Background technique [0002] During the tire vulcanization process, the vulcanization bladder plays the role of inflating and expanding the shape, transmitting the pressure of superheated water, ensuring that the rubber material fills the mold cavity to achieve the required contour, and transmitting the heat required for tire vulcanization. [0003] Vulcanizing bladders are indispensable in tire production, and their consumption is also an important part of the tire manufacturing cost. Damage to the curing bladders can lead to cracks, toe fillets and lack of rubber, and in severe cases, appearance quality defects such as delamination , resulting in waste and defective products in vulcanized tires, therefore, the vulcanizing bladder must be replaced in time when it is damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J163/00C09J11/08C09J11/04C09J5/06
CPCC09J175/06C09J11/08C09J11/04C09J5/06C08K2003/385C08L2201/08C08L63/00C08L11/00C08K3/346C08K3/38C08K9/02C08K9/00
Inventor 赵会岩范屏赵海林张凯
Owner 山东永誉橡胶有限公司