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Microencapsulated composite vulcanizing agent and preparation method and application thereof

A compound vulcanizing agent and microencapsulation technology, which is applied in the field of rubber batching materials, can solve problems such as inability to take into account vulcanization efficiency, poor stability of rubber materials, performance damage of neoprene rubber materials and its products, and achieve convenient batching and feeding. The effect of good material stability and good market application value

Active Publication Date: 2022-05-17
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing microencapsulated zinc oxide and or magnesium oxide are mostly used in the fields of medicine, cosmetics, antibacterial materials, etc. The capsule material used is not easy to disperse in the neoprene matrix, the stability of the rubber is poor, and it cannot be vulcanized Efficiency, all of which have great damage to the performance of neoprene rubber and its products

Method used

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  • Microencapsulated composite vulcanizing agent and preparation method and application thereof
  • Microencapsulated composite vulcanizing agent and preparation method and application thereof
  • Microencapsulated composite vulcanizing agent and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A microencapsulated composite vulcanizing agent, comprising a capsule core and a capsule membrane, the capsule membrane is coated on the surface of the capsule core, the capsule core includes zinc oxide, magnesium oxide and 1,2-ethylenethiourea, and the capsule membrane is made of Natural rubber and stearic acid, specifically, the mass parts of each component are: 2.2 parts of natural rubber, 6.8 parts of stearic acid, 48.5 parts of zinc oxide, 39.5 parts of magnesium oxide, 3 parts of 1,2-ethylenethiourea share.

[0040] Such as figure 1 As shown, the preparation method of the above-mentioned microencapsulated composite vulcanizing agent is: dissolving natural rubber and stearic acid in heptane to make a capsule solution with a mass fraction of 12%, zinc oxide powder, magnesium oxide powder and 1,2 - Ethylene thiourea powder is added to a V-type mixer and mixed evenly to obtain a composite vulcanizing agent. Add the composite vulcanizing agent to the capsule solution,...

Embodiment 2

[0053] A microencapsulated composite vulcanizing agent, comprising a capsule core and a capsule membrane, the capsule membrane is coated on the surface of the capsule core, the capsule core includes zinc oxide, magnesium oxide and 1,2-ethylenethiourea, and the capsule membrane is made of Butadiene rubber and stearic acid, specifically, the mass parts of each component are: 2.2 parts of butadiene rubber, 4.9 parts of stearic acid, 39 parts of zinc oxide, 49 parts of magnesium oxide, 1,2-ethylene sulfide 4.9 parts of urea.

[0054] Such as figure 1 As shown, the preparation method of the above-mentioned microencapsulated composite vulcanizing agent is: dissolving butadiene rubber and stearic acid in cyclohexane to make a capsule solution with a mass fraction of 15%, zinc oxide powder, magnesium oxide powder and 1 , Add 2-ethylene thiourea powder into a high-speed mixer and mix evenly to prepare a composite vulcanizing agent. Add the composite vulcanizing agent into the capsule ...

Embodiment 3

[0063] A microencapsulated composite vulcanizing agent, comprising a capsule core and a capsule membrane, the capsule membrane is coated on the surface of the capsule core, the capsule core includes zinc oxide, magnesium oxide and 1,2-ethylenethiourea, and the capsule membrane is made of Isoamyl rubber and stearic acid, specifically, the mass parts of each component are: 1.6 parts of isoprene rubber, 6.8 parts of stearic acid, 34 parts of zinc oxide, 48 parts of magnesium oxide, 1,2-ethylene sulfide 9.6 parts of urea.

[0064] Such as figure 1 As shown, the preparation method of the above-mentioned microencapsulated composite vulcanizing agent is: dissolving isoprene rubber and stearic acid in tetrahydrofuran to make a capsule solution with a mass fraction of 14%, zinc oxide powder, magnesium oxide powder and 1,2 - adding ethylene thiourea powder into a three-dimensional mixer and mixing evenly to prepare a composite vulcanizing agent, adding the composite vulcanizing agent i...

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Abstract

The invention discloses a microencapsulated composite vulcanizing agent, which comprises a capsule core and a capsule membrane, the capsule membrane is coated on the surface of the capsule core, the capsule core includes a vulcanizing agent, and the material of the capsule membrane includes rubber and stearic acid. The present invention also correspondingly provides a preparation method of the microencapsulated composite vulcanizing agent and the application of the microencapsulated composite vulcanizing agent in chloroprene rubber formulations. The microencapsulated composite vulcanizing agent of the present invention is easy to disperse in the chloroprene rubber matrix, takes into account the stability of the rubber material and the vulcanization efficiency, and has little damage to the properties of the chloroprene rubber or the rubber material mainly composed of the neoprene rubber.

Description

technical field [0001] The invention belongs to the field of rubber batching materials, in particular to a vulcanizing agent and its preparation method and application. Background technique [0002] Neoprene has excellent heat resistance, weather resistance, abrasion resistance, oil resistance, flame resistance and air tightness, and is widely used in the manufacture of hoses, tapes, wire sheaths, cable sheaths, printing rubber rollers, rubber sheets, gaskets And various gaskets and other products. In order to meet the functional requirements of the product, it is usually necessary to add vulcanizing agents, accelerators, etc. to the neoprene rubber compound to vulcanize and shape it. Early vulcanization often occurs in the processes of compound mixing, storage, extrusion, calendering and molding. Phenomenon, leading to poor stability of the rubber compound, seriously affecting the usability and functionality of the neoprene rubber compound and its products. [0003] The c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L11/00C08L9/00C08L9/02C08L9/06C08L7/00C08L23/16C08K9/10C08K3/22C08K5/405
CPCC08K9/10C08K3/22C08K5/405C08L11/00C08K2003/2296C08K2003/222C08L2205/03C08L9/00C08L9/06C08L7/00C08L23/16C08L9/02
Inventor 吴玲玲黄良平余海文杨瑞蒙肖同亮王雪飞
Owner ZHUZHOU TIMES NEW MATERIALS TECH