Pre-dispersed master batch particle for rubber foaming and preparation method of pre-dispersed master batch particle

A technology of pre-dispersing masterbatch and EPDM rubber, which is applied in the field of rubber additives and its preparation, to achieve the effects of improving dispersibility, improving foaming efficiency, and good internal lubrication effect

Active Publication Date: 2015-08-19
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both of the above two patents involve the improvement of the formulation of the pre-dispersed masterbatch to increase the vulcanization activity of the rubber, but both fail to involve the combination of dual-active foaming component

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw materials are composed according to the mass fraction: 30 parts of azodicarbonamide, 20 parts of N,N'-dinitrosopentamethylenetetramine, 2 parts of dicyandiamide, 5 parts of coupling agent, 3 parts of inorganic filler, 5 parts of softening oil, 2 parts of processing aid and 33 parts of EPDM rubber. Among them, the coupling agent is composed of 2.5 parts of γ-methacryloxypropyl trimethoxysilane and 2.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate; the softening oil is composed of 2.5 parts of paraffin Base rubber oil and 2.5 parts of naphthenic rubber oil; processing aid is composed of 1 part of sodium dodecylbenzene sulfonate and 1 part of sorbitan monolaurate; inorganic filler is composed of 1.5 parts of kaolin with a fineness of 300 mesh and 1.5 parts of talcum powder with a fineness of 2500 meshes.

[0028] Preparation method: put EPDM rubber, inorganic filler and softening oil accounting for one-third of the total weight of the softening ...

Embodiment 2

[0030] The raw materials are composed according to the mass fraction: 35 parts of azodicarbonamide, 25 parts of N,N'-dinitrosopentamethylenetetramine, 2 parts of dicyandiamide, 5 parts of coupling agent, 3 parts of inorganic filler, 5 parts of softening oil, 2 parts of processing aid and 23 parts of EPDM rubber. Among them, the coupling agent is composed of 2.5 parts of γ-methacryloxypropyl trimethoxysilane and 2.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate; the softening oil is composed of 2.5 parts of paraffin Base rubber oil and 2.5 parts of naphthenic rubber oil; processing aid is composed of 1 part of sodium dodecylbenzene sulfonate and 1 part of sorbitan monolaurate; inorganic filler is composed of 1.5 parts of kaolin with a fineness of 300 mesh and 1.5 parts of talcum powder with a fineness of 2500 meshes.

[0031] Preparation method: same as Example 1.

Embodiment 3

[0033] The raw materials are composed according to the mass fraction: 40 parts of azodicarbonamide, 30 parts of N,N'-dinitrosopentamethylenetetramine, 2 parts of dicyandiamide, 5 parts of coupling agent, 3 parts of inorganic filler, 5 parts of softening oil, 2 parts of processing aid and 13 parts of EPDM rubber. Among them, the coupling agent is composed of 2.5 parts of γ-methacryloxypropyl trimethoxysilane and 2.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate; the softening oil is composed of 2.5 parts of paraffin Base rubber oil and 2.5 parts of naphthenic rubber oil; processing aid is composed of 1 part of sodium dodecylbenzene sulfonate and 1 part of sorbitan monolaurate; inorganic filler is composed of 1.5 parts of kaolin with a fineness of 300 mesh and 1.5 parts of talcum powder with a fineness of 2500 meshes.

[0034] Preparation method: same as Example 1.

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PUM

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Abstract

The invention discloses a pre-dispersed master batch particle for rubber foaming and a preparation method of the pre-dispersed master batch particle. The pre-dispersed master batch particle comprises, by weight, 30-50 parts of azodicarbonamide, 20-30 parts of N, N'-dinitrosopentamethylene tetraamine, 1-3 parts of dicyanamide, 3-10 parts of coupling agents, 3-10 parts of inorganic fillers, 5-10 parts of softening oil, 2-5 parts of processing agents and 5-40 parts of ethylene propylene diene monomer rubber. By the preparation method of the pre-dispersed master batch particle, dispersity of active components is improved, the master batch particle is uniformly discharged, the surface of the particle is smooth, the master batch particle has fine processing performance and is used for preparing rubber materials, and the foaming effect of the rubber materials is improved.

Description

technical field [0001] The invention relates to a rubber additive and a preparation method thereof, in particular to a pre-dispersed masterbatch used for rubber foaming and a preparation method thereof. Background technique [0002] Rubber additives mainly include rubber accelerators, vulcanization activators, antioxidants, processing aids and other special functional rubber additives. In recent years, with the development of rubber additives industry, in order to eliminate the chemical smog and dust pollution problems in the rubber processing process, one of the important directions for the development of additives is product compounding and master batching. Pre-dispersed powdered chemical additives in a certain bonding system by special means, and then granulated, the additive masterbatch made can be used to replace traditional powdered additives, improve the operating environment, improve product quality, and thus help After the agent is granulated, it can play a role of...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/00C08K13/02C08K5/23C08K5/17C08K5/52C08K5/5419C08K5/42C08K3/34C08K5/103C08J9/10C08J3/22
CPCC08J3/226C08J9/101C08J9/103C08J9/107C08J2321/00C08J2423/16C08L23/16C08L91/00C08K13/02C08K5/23C08K5/17C08K5/52C08K5/5419C08K5/42C08K3/34C08K5/103
Inventor 连千荣
Owner NINGBO ACTMIX POLYMER
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