A kind of vulcanization active agent for blended rubber and preparation method thereof

A vulcanization activator and rubber technology, which is applied in the field of vulcanization activator for blended rubber and its preparation, can solve the problems of reducing the mechanical properties of blended rubber, inconsistent zinc oxide dispersion, affecting the vulcanization performance of blended rubber, etc., to prevent Agglomeration, good reinforcement effect, small particle size effect

Active Publication Date: 2020-06-16
JIANGSU ATE DONGTAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for blended rubber, the distribution of vulcanization aids in blended rubber depends on the solubility of vulcanization aids in two-phase / three-phase polymers, and the solubility depends on the relationship between polymer and vulcanization aids. The difference in solubility leads to inconsistent dispersion of zinc oxide in different rubber phases, which affects the vulcanization performance of the blend
Experiments have shown that if the amount of zinc oxide used in the blended rubber is further reduced, even for nano-zinc oxide, the mechanical properties of the blended rubber may be reduced, especially for the blended rubber added with regenerated rubber with poor compatibility

Method used

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  • A kind of vulcanization active agent for blended rubber and preparation method thereof
  • A kind of vulcanization active agent for blended rubber and preparation method thereof
  • A kind of vulcanization active agent for blended rubber and preparation method thereof

Examples

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Embodiment 1

[0021] This embodiment provides a vulcanization activator for blended rubber, its raw material includes the following components by weight: 60 parts of nano-zinc oxide, 40 parts of zinc methacrylate, 2 parts of oligoester, 1 part of silane coupling agent, 1 part of dispersant; wherein, the oligomer is a mixture of oligomer 12-I and methacrylic oligomer in a weight ratio of 8:1, the dispersant is a carboxylate dispersant, and the silane The coupling agent is KH-550, and nano zinc oxide and zinc methacrylate are prepared by chemical deposition.

[0022] This embodiment also provides a method for preparing a vulcanization activator for blended rubber, comprising the following steps:

[0023] Step 1, 11.8g sodium hydroxide is mixed with 15% solution; 20g zinc chloride is made into 20% solution, under stirring condition, zinc chloride solution is slowly added dropwise in the sodium hydroxide solution, stirring speed is 200r / min, after the addition of the zinc oxide solution, adjus...

Embodiment 2

[0028] This embodiment provides a vulcanization activator for blended rubber, the raw material of which includes the following components by weight: 50 parts of nano-zinc oxide, 50 parts of zinc methacrylate, 2 parts of oligoester, 1 part of silane coupling agent, 1 part of dispersant; wherein, the oligomer is a mixture of oligomer 12-1 and methacrylic oligomer in a weight ratio of 8:1, the dispersant is a silicate dispersant, and the silane The coupling agent is KH-791, and nanometer zinc oxide and zinc methacrylate are prepared by chemical deposition.

[0029] This embodiment also provides a method for preparing a vulcanization activator for blended rubber, comprising the following steps:

[0030] Step 1, 11.8g sodium hydroxide is mixed with 10% solution; 20g zinc chloride is made into 30% solution, under stirring condition, zinc chloride solution is slowly added dropwise in the sodium hydroxide solution, stirring speed is 200r / min, after the addition of the zinc oxide solu...

Embodiment 3

[0035] This embodiment provides a reactive crosslinking agent for blended rubber, its raw materials include the following components by weight: 45 parts of nano-zinc oxide, 55 parts of zinc methacrylate, 2 parts of oligoester, and 1 part of silane coupling agent , 0.5 part of dispersant; Wherein, described oligopolyester is the mixture of oligopolyester 12~I and methacrylic acid oligopolyester with a weight ratio of 8:1, and described dispersant is sodium dodecylsulfonate, The silane coupling agent is KH-580, and the nanometer zinc oxide and zinc methacrylate are prepared by chemical deposition.

[0036] Step 1, 11.8g sodium hydroxide is mixed with 15% solution; 20g zinc chloride is made into 20% solution, under stirring condition, zinc chloride solution is slowly added dropwise in the sodium hydroxide solution, stirring speed is 200r / min, after the addition of the zinc oxide solution, adjust the pH of the solution between 8 and 12, then fully stir the reaction for 0.5 hours, ...

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Abstract

The invention provides a vulcanization activator with easy dispersion and good reinforcing performance for blended rubber. The vulcanization activator comprises the following raw materials in parts byweight: 40-70 parts of nano zinc oxide, 25-60 parts of zinc methacrylate, 1-3 parts of oligomer ester, 0.5-1 part of a silane coupling agent and 0.5-2 parts of a dispersing agent. The preparation method comprises the following steps: adopting a chemical deposition method to synthesize a nano mixed material with the zinc oxide as a core and the zinc methacrylate as a shell, preparing a 20-30% solution through cleaning and filtering, adding the oligomer ester and the silane coupling agent, carrying out stirring for 0.5-1 hour, carrying out filtering, and carrying out drying for 2-4 hours to prepare the vulcanization activator for blended rubber. The vulcanization activator for the blended rubber provided by the invention has low zinc content, good dispersibility and no easy agglomeration, and can be used to substitute indirect method zinc oxide with the same amount for mixing with natural rubber, styrene-butadiene rubber and butadiene rubber to prepare the blended rubber, wherein the weight ratio of the natural rubber to the styrene-butadiene rubber to the butadiene rubber is 60:20:20. The physical and mechanical properties of the blended rubber can meet the use requirements of theblended rubber.

Description

technical field [0001] The invention belongs to the technical field of nano new material rubber additives, and in particular relates to a vulcanization activator for blended rubber and a preparation method thereof. Background technique [0002] Rubber blending is a process of blending different types of rubber or rubber with plastics and other polymeric organic materials to obtain composite rubber. Blending polymers with different properties can greatly improve the properties of rubber. Rubber blending can also make the blending components complement each other in terms of performance, so as to develop materials with superior comprehensive performance. In the process of rubber blending, vulcanizing agents, active agents, accelerators, crosslinking agents, Different additives such as plasticizers and anti-aging agents can stabilize and optimize the properties of the prepared composite rubber. The enhancement function of the additives is the key factor to improve the quality o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08K9/10C08K3/22C08L7/00C08L9/06C08L9/00C08K13/06
CPCC08K2003/2296C08K2201/011C08L7/00C08L67/00C08L2205/025C08K9/10C08K3/22C08L9/06C08L9/00C08K13/06
Inventor 陆建
Owner JIANGSU ATE DONGTAI NEW MATERIALS TECH
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