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High-Mooney natural rubber foamed rubber compound and preparation method thereof

A technology of natural rubber and mixed rubber, which is applied in the field of natural rubber foaming. It can solve the problems of unsuitable continuous production, unstable foamed products, and low Mooney viscosity of raw rubber, and achieve optimal vulcanization speed, good elasticity, and optimized The effect of foaming rate

Inactive Publication Date: 2020-05-15
际华中晟材料科技(岳阳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a high Mooney natural rubber foamed compound and its preparation method. By rationally selecting raw materials and their proportions and optimizing the preparation process, the high cost of mastication in the traditional process and the high cost of raw rubber Mooney can be solved. Low viscosity, not conducive to on-site management and unsuitable for continuous production in modern mixing plants, and unstable foamed products

Method used

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  • High-Mooney natural rubber foamed rubber compound and preparation method thereof

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specific Embodiment 1

[0035] A high Mooney natural rubber foaming rubber compound, in parts by weight, the rubber compound comprises: 100 parts of natural rubber, 10 parts of active agent, 1.5 parts of anti-aging agent, 30 parts of softening agent, 3.5 parts of vulcanizing agent, 3.5 parts of accelerator, 2 parts of dispersant, 215 parts of filler, 5 parts of foaming agent H (foaming agent H: dinitrosopentamethylenetetramine), 2 parts of foaming aid BK;

[0036] The preparation method of this high Mooney natural rubber foaming compound comprises the following steps:

[0037] Step 1, ingredients: 100 parts of natural rubber, 10 parts of active agent, 1.5 parts of anti-aging agent, 30 parts of softening agent, 3.5 parts of vulcanizing agent, 3.5 parts of accelerator, 2 parts of dispersant, 215 parts of filler, foaming agent H 5 2 parts, foaming aid BK 2 parts, precisely configure raw materials;

[0038] Step 2, one-stage mixing: Add filler and natural rubber to the internal mixer, the pressure of th...

specific Embodiment 2

[0042] A high Mooney natural rubber foaming rubber compound, in parts by weight, the rubber compound comprises: 100 parts of natural rubber, 10 parts of active agent, 1.5 parts of anti-aging agent, 40 parts of softening agent, 3.5 parts of vulcanizing agent, Accelerator 3.3 parts, dispersant 2 parts, filler 260 parts, foaming agent H 6 parts, foaming aid BK 2 parts.

[0043] The preparation method of this high Mooney natural rubber foaming compound comprises the following steps:

[0044] Step 1, ingredients: 100 parts of natural rubber, 10 parts of active agent, 1.5 parts of anti-aging agent, 40 parts of softening agent, 3.5 parts of vulcanizing agent, 3.3 parts of accelerator, 2 parts of dispersant, 260 parts of filler, foaming agent H 6 2 parts, foaming aid BK 2 parts, precisely configure raw materials;

[0045] Step 2, one-stage mixing: Add filler and natural rubber to the internal mixer, the pressure of the top bolt is 60bar, the speed is 45r / min, the temperature of the m...

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Abstract

The invention discloses a high-Mooney natural rubber foamed rubber compound and a preparation method thereof, and relates to the technical field of natural rubber foaming. The rubber compound comprises 100 parts of natural rubber, 10-15 parts of an active agent, 1.5-4.5 parts of an anti-aging agent, 20-40 parts of a softening agent, 1.5-4 parts of a vulcanizing agent, 3.5-5 parts of an accelerant,0.5-3 parts of a dispersing agent, 200-260 parts of a filler, 4-6 parts of a foaming agent and 2-4 parts of a foaming aid BK. The master batch is prepared by primary-stage mixing in an internal mixer, the foamed rubber compound is prepared in secondary stage vulcanizing; the existing natural rubber foamed rubber compound preparation process is simplified, the raw rubber plastication is omitted, the processing cost is reduced, the large-scale production in a modern mixing factory is facilitated, and moreover, the prepared foamed material has the characteristics of uniform pore size, good elasticity and high foaming ratio.

Description

technical field [0001] The invention belongs to the technical field of natural rubber foaming, and in particular relates to a high Mooney natural rubber foaming compound and a preparation method thereof. Background technique [0002] Natural rubber foam materials have the characteristics of damping, sound insulation, light weight, and good elasticity, and are widely used in various production and living fields. However, the traditional natural rubber foaming compound requires low Mooney viscosity of raw rubber, and the cost of mastication is extremely high, which is not conducive to on-site management and is not suitable for continuous production in modern mixing plants. [0003] The poor stability of the mixed rubber leads to insufficient stability of the performance of the natural rubber foamed products, and due to the low Mooney viscosity and low strength of the mixed rubber, it is difficult to meet the production of thin foamed products produced by continuous calendering...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L91/06C08L19/00C08K3/26C08K3/04C08J9/10
CPCC08J9/107C08J2203/04C08J2307/00C08J2491/06C08K3/04C08K2003/265
Inventor 刘佑君李炎君段富圭
Owner 际华中晟材料科技(岳阳)有限公司
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