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Adhesion promoter for vulcanization capsule and preparation method thereof

A technology of adhesion promoter and vulcanization bladder, which is applied in the field of auxiliaries for vulcanization bladder, can solve the problems of large amount of addition, increased dosage, and reduced production efficiency, achieves large pore volume and specific surface area, avoids the loss of effective ingredients, The effect of eliminating the restriction of the mixing temperature

Active Publication Date: 2022-02-22
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

[0005] However, the m-formaldehyde-white adhesive system has the following disadvantages in the process of use: white carbon black will delay the vulcanization reaction speed of sulfur and affect production efficiency; refining effect, but the thermal stability of the formaldehyde carrier is not good, it is easy to release formaldehyde in advance when heated, and the adhesive performance is lost; in order to increase the vulcanization speed, it is necessary to increase the amount of vulcanization system in the rubber compound, or use a more efficient accelerator, resulting in cost increase
However, zinc oxide also has the problem of poor dispersion in butyl rubber. Too much addition will not only greatly increase the mixing time of the rubber compound and reduce production efficiency, but also cause disulfide in the vulcanization bladder due to the uneven distribution of zinc oxide. The degree to which the bonds are oxidized is inconsistent, affecting the quality of the final product

Method used

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  • Adhesion promoter for vulcanization capsule and preparation method thereof
  • Adhesion promoter for vulcanization capsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0063] This embodiment has prepared a kind of double modified attapulgite, and its preparation comprises the following steps:

[0064] Step S210, putting the attapulgite into a ball mill for grinding and then sieving to obtain nano attapulgite with a particle size of 0.5-1μ;

[0065] Step S220, disperse the nano-attapulgite obtained in step S210 in deionized water, put it into an ultrasonic emulsification disperser, and ultrasonically disperse for 1 hour under the conditions of ultrasonic power of 200-500W and ultrasonic frequency of 20-25kHz Set aside to settle, filter out the precipitate and dry to obtain pure nano-attapulgite;

[0066] Step S230, according to the mass ratio of pure nano-attapulgite: deionized water = 1:10, disperse the pure nano-attapulgite obtained in step S220 in deionized water to form a fourth suspension, and mix the After the fourth suspension is stirred evenly, it is coated on a container and dried to obtain a nano-attapulgite coating with a thicknes...

Embodiment 2-1

[0070] Using the dual modified attapulgite in Example 1-1 as the attapulgite dispersion to prepare the adhesion promoter for vulcanization capsules, the specific steps are as follows:

[0071] Step S100, according to the molar ratio of zinc oxide: acetic acid = 1:2, zinc oxide and acetic acid solution are mixed and reacted to obtain a zinc acetate solution;

[0072] Step S200, according to the mass ratio of attapulgite dispersion: deionized water = 30:100, add attapulgite dispersion to deionized water, and ultrasonically disperse for 15 minutes under the condition of ultrasonic power of 200W and ultrasonic frequency of 20kHz, Obtain the first suspension;

[0073] Step S300, according to the mass ratio of attapulgite dispersion: hydrolyzed polymaleic anhydride: zinc = 100:0.5:50, add hydrolyzed polymaleic anhydride to the first suspension in step S200 and pass step S100 The obtained zinc acetate solution was stirred and reacted for 50 minutes to obtain a second suspension;

...

Embodiment 2-2

[0079] Using the dual modified attapulgite in Example 1-1 as the attapulgite dispersion to prepare the adhesion promoter for vulcanization capsules, the specific steps are as follows:

[0080] Step S100, according to the molar ratio of zinc oxide: acetic acid = 1:2, zinc oxide and acetic acid solution are mixed and reacted to obtain a zinc acetate solution;

[0081] Step S200, according to the mass ratio of attapulgite dispersion: deionized water = 40:100, add attapulgite dispersion to deionized water, and ultrasonically disperse for 30 minutes under the condition of ultrasonic power of 200W and ultrasonic frequency of 20kHz, Obtain the first suspension;

[0082] Step S300, according to the mass ratio of attapulgite dispersion: hydrolyzed polymaleic anhydride: zinc = 100:0.5:50, add hydrolyzed polymaleic anhydride to the first suspension in step S200 and pass step S100 The obtained zinc acetate solution was stirred and reacted for 50 minutes to obtain a second suspension;

[0...

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Abstract

The present invention relates to the technical field of auxiliary agents for vulcanization capsules, in particular to an adhesion promoter for vulcanization capsules and a preparation method thereof, an adhesion promoter for vulcanization capsules, and the adhesion promoter for vulcanization capsules is a core-shell structure, the core body is modified zinc oxide / attapulgite composite, and the shell is liquid butadiene rubber grafted with maleic anhydride; zinc oxide accounts for (35-40) wt% of the total amount of the core body; maleic anhydride It accounts for (17-25) wt% of the total amount of the shell; and the shell accounts for (60-65) wt% of the total amount of the adhesion promoter for the vulcanization bladder. The adhesive for vulcanization bladder provided by the present invention has good dispersibility and reinforcing effect in butyl rubber, reduces production cost, can improve the adhesion between butyl rubber, fiber filler and various processing aids, greatly The mixing time and vulcanization time of rubber materials are greatly reduced, and the production efficiency and overall mechanical properties of vulcanization bladders are improved.

Description

technical field [0001] The invention relates to the technical field of auxiliary agents for vulcanization bladders, in particular to an adhesion promoter for vulcanization bladders and a preparation 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. Therefore, the vulcanizing bladder needs to have strong stress and strain tolerance and good thermal conductivity to meet the process requirements of repeated inflation and deflation cycles under high temperature and high pressure conditions. [0003] In order to meet the above requirements, the vulcanizing bladder usually uses butyl rubber with high heat resistance and chemical degradation resistance as the main raw material,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K9/06C08K9/04C08K9/02C08K3/22C08K3/34C08L23/22C08L91/00
CPCC08K9/10C08K9/06C08K9/04C08K9/02C08K3/22C08K3/346C08L23/22C08K2201/011C08K2003/2296C08L91/00
Inventor 赵会岩范屏赵海林张凯
Owner 山东永誉橡胶有限公司
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