Rubber vulcanization activator, preparation method and application thereof

A technology of rubber vulcanization and active agent, applied in the field of rubber vulcanization active agent and its preparation, can solve the problems of residue, easy agglomeration, influence and the like

Inactive Publication Date: 2020-08-18
江西宝弘纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are technical problems of poor dispersion and easy agglomeration of zinc oxide in rubber, which will cause some zinc oxide to not participate in the vulcanization process of rubber and remain in the rubber. During the use and disposal of rubber products, this part does not participate in the vulcanization process. The zinc oxide will be released, which has a huge impact on the environment, especially aquatic organisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The present invention also provides a preparation method of the rubber vulcanization activator described in the above technical scheme, comprising the following steps:

[0023] Mixing zinc oxide, calcium terephthalate and water to obtain a mixed material;

[0024] The mixed material is spray-dried to obtain the rubber vulcanization active agent.

[0025] The invention mixes zinc oxide, calcium terephthalate and water to obtain a mixed material.

[0026] In the present invention, the mixing speed is preferably 2500-5000 rpm, more preferably 3000-4000 rpm; the mixing time is preferably 10-60 min, more preferably 20-40 min. In the present invention, the mixing is preferably performed in a colloid mill, and the gap between the grinding discs of the colloid mill is preferably 10-100 μm, more preferably 20-80 μm. In the present invention, the gap of the grinding disc within the above-mentioned range is conducive to the loading of zinc oxide on the surface of calcium terepht...

Embodiment 1

[0035] Mix zinc oxide (particle size 10nm) and calcium terephthalate (particle size 1μm) in a mass ratio of 2:8, add to the colloid mill, use water as a solvent, and the gap between the grinding discs of the colloid mill is 10μm. Be 3000 revs / min, the time is 20min, obtains mixed material;

[0036] The obtained mixed material was spray-dried under the conditions of an inlet temperature of 160° C. and an outlet temperature of 80° C. to obtain a rubber vulcanization activator.

[0037] Mix the obtained rubber vulcanization active agent with the rubber according to the formula and vulcanization method recorded in the national standard HG / T2404-2008. The mass ratio of the rubber vulcanization active agent to rubber is 4:100, and after mixing for 48 hours, according to the national standard GB / T528 -1998 Test the tensile strength of the vulcanized rubber obtained, the tensile strength is 26.0Mpa.

Embodiment 2

[0039] Mix zinc oxide (particle size 10nm) and calcium terephthalate (particle size 1 μm) in a mass ratio of 3:7, add to the colloid mill, use water as the solvent, and the gap between the grinding discs of the colloid mill is 40 μm, and the speed Be 4000 revs / min, the time is 40min, obtains mixed material;

[0040] The obtained mixed material was spray-dried under the conditions of an inlet temperature of 250° C. and an outlet temperature of 110° C. to obtain a rubber vulcanization activator.

[0041] Mix the rubber vulcanization active agent obtained according to the formula and vulcanization method recorded in the national standard HG / T2404-2008. The mass ratio of the rubber vulcanization active agent to rubber is 3:100, and after mixing for 48 hours, according to the national standard GB / T528 -1998 Test the tensile strength of the vulcanized rubber obtained, the tensile strength is 25.8Mpa.

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Abstract

The invention provides a rubber vulcanization activator, and a preparation method and application thereof, and relates to the technical field of rubber vulcanization. The rubber vulcanization activator provided by the invention comprises calcium terephthalate and zinc oxide loaded on the surface of the calcium terephthalate; the mass ratio of the zinc oxide to the calcium terephthalate is (1-6): (9-4). According to the rubber vulcanization activator of the invention, the calcium terephthalate can be used as a matrix for loading the zinc oxide, so that the dispersibility of the zinc oxide can be improved; the zinc oxide can be uniformly dispersed in a rubber matrix, and therefore, on the basis of ensuring the vulcanization activity of the zinc oxide, the dosage of the zinc oxide is effectively reduced, production cost is reduced, and meanwhile, the pollution of the zinc oxide to the environment is reduced. The calcium terephthalate is a non-polar material and is used as the matrix for loading the zinc oxide, so that the contact area of the zinc oxide and rubber molecules is increased, and therefore, the compatibility of the zinc oxide and a rubber molecular chain is enhanced, and the tensile strength of vulcanized rubber is improved.

Description

technical field [0001] The invention relates to the technical field of rubber vulcanization, in particular to a rubber vulcanization active agent and its preparation method and application. Background technique [0002] The vulcanization process can make the rubber form a three-dimensional network structure, enhance the mechanical properties and thermal stability of the rubber, and meet the needs of production and life. In the vulcanization process, it is often necessary to add additives to improve the rubber vulcanization activity, and zinc oxide is one of the most important rubber vulcanization activators. The addition of zinc oxide can prolong the scorch time of rubber, accelerate the vulcanization rate, and increase the vulcanization index. Its importance to the rubber industry is self-evident. [0003] However, there are technical problems of poor dispersion and easy aggregation of zinc oxide in rubber, which will cause some zinc oxide to not participate in the vulcani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K3/22C08K5/098C08L21/00
CPCC08K3/22C08K5/098C08K9/12C08K2003/2296C08K2201/005C08L21/00
Inventor 刘坤吉徐前进
Owner 江西宝弘纳米科技有限公司
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