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Superfine calcined kaolin filled rubber material and preparation method thereof

A technology of calcining kaolin and filling rubber, which is applied in the field of fillers. It can solve the problems of long production cycle of rubber products, heavy dependence on the petroleum industry, and prolonged rubber mixing time, so as to achieve increased strength, improved overall strength, elongation at break and Effect of Tensile Strength Improvement

Inactive Publication Date: 2013-08-28
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) Serious dependence on the oil industry
[0006] (3) The production cycle of rubber products is long
The addition of traditional fillers prolongs the mixing time of rubber and affects production efficiency

Method used

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  • Superfine calcined kaolin filled rubber material and preparation method thereof
  • Superfine calcined kaolin filled rubber material and preparation method thereof
  • Superfine calcined kaolin filled rubber material and preparation method thereof

Examples

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preparation example Construction

[0043] Such as figure 1 Shown, the preparation method of superfine calcined kaolin filled rubber material of the present invention comprises the following steps:

[0044] Step 1, mastication:

[0045] First, masticate 80-120 parts of natural rubber for 3-10 minutes;

[0046] Step 2, mixing:

[0047] Add 5-35 parts of kaolin and 15-40 parts of carbon black to the masticated rubber and mix for 40-90 minutes; then add 10-15 parts of reinforcing agent and continue mixing for 20-40 minutes; then add 3-8 Active agent, 0.1-1 part of accelerator D, 0.1-1 part of lubricant, 1-3 parts of anti-aging agent RD and 3-8 parts of vulcanizing agent, kneading for 20-40 minutes:

[0048] Step 3, static aging:

[0049] Let the mixed rubber material stand for 2 to 5 hours for aging;

[0050] Step 4, rubber back refining:

[0051] Re-mill the rubber that has been left to mature for 10-20 minutes to eliminate air bubbles;

[0052] Step 5, vulcanization:

[0053] Vulcanization conditions: The...

Embodiment 1

[0069] Step 1: Take 100 parts of natural rubber for mastication, and the mastication time is 5 minutes.

[0070] Step 2: Add 25 parts of kaolin and 20 parts of carbon black to the masticated rubber for mixing for 60 minutes; then add 12 parts of white carbon black to the rubber compound for 30 minutes; add 5 parts of active agent zinc oxide in turn, 0.5 parts Accelerator D, 0.5 parts of stearic acid, 1.5 parts of anti-aging agent RD, finally add 3 parts of sublimed sulfur, it takes 30 minutes: After adding all the fillers, mix the rubber for 30 minutes, the purpose is to eliminate the air bubbles in the rubber, and mix the rubber uniform.

[0071] Step 3: Leave the mixed rubber material to mature for 3 hours.

[0072] Step 4: Re-mill the mature rubber for 15 minutes to eliminate air bubbles.

[0073] Step 5: Before vulcanizing and releasing the rubber material, the mold is first coated with a layer of release agent, and a layer of polytetrafluoroethylene cloth is placed on t...

Embodiment 2

[0075] Step 1: Take 120 parts of natural rubber and styrene-butadiene rubber in a ratio of 1:1 for mastication, and the mastication time is 10 minutes.

[0076] Step 2: Add 5 parts of kaolin and 40 parts of carbon black to the masticated rubber for mixing for 90 minutes; then add 10 parts of titanium dioxide to the rubber compound for 40 minutes; add 8 parts of active agents zinc oxide and lead oxide in sequence according to A mixture of any proportion, 0.1 part of accelerator M, 0.1 part of stearyl alcohol, 3 parts of anti-aging agent D, and finally add 8 parts of sulfur monochloride and sublimed sulfur according to the mixture of any proportion, it takes 40 minutes: after adding all the fillers, put the rubber Mixing for 40 minutes, the purpose is to eliminate the air bubbles in the rubber and mix the rubber evenly.

[0077] Step 3: Leave the mixed rubber material to mature for 5 hours.

[0078] Step 4: Back-mill the mature rubber for 10 minutes to eliminate air bubbles.

...

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Abstract

The invention discloses a superfine calcined kaolin filled rubber material and a preparation method thereof. The superfine calcined kaolin filled rubber material comprises the following main components: 80-120 parts of rubber, 10-15 parts of reinforcing agent, 3-8 parts of active agent, 3-8 parts of vulcanizing agent, 1-3 parts of antiager, 0.1-1 part of lubricant, 0.1-1 part of accelerant, 15-40 parts of carbon black, and 5-35 parts of kaolin. The preparation method comprises the following steps of firstly plasticating the rubber, then mixing the rubber with the kaolin, the carbon black, the reinforcing agent, the active agent, the accelerant, the lubricant, the antiager and the vulcanizing agent, then standing for curing and remilling the rubber material, and finally vulcanizing and rolling so as to obtain the filled rubber material. Under the condition of not lowering the wear-resisting property of the rubber obviously, the elongation at break and the tension strength of the rubber are improved, and a thermal aging test proves that the rubber filled with mixture of kaolin and carbon black is better than the rubber filled with carbon black in terms of elongation at break and the tension strength. Furthermore, the cost of the rubber product filled with the kaolin is obviously lowered, and the economic efficiency is improved.

Description

technical field [0001] The invention relates to a filler, in particular to a superfine calcined kaolin filled rubber material suitable for the rubber industry and a preparation method thereof. Background technique [0002] The rubber industry plays a pivotal role in national life. Fillers can increase the tensile strength of rubber, improve the processing properties of rubber, and reduce product costs. The development of high-efficiency, low-cost fillers is the most important topic in the rubber industry. [0003] At present, the fillers used in the rubber industry in my country are mainly carbon black and white carbon black, which account for 30% of the raw rubber consumption. However, the fillers currently used in the rubber industry have the following deficiencies: [0004] (1) High processing cost. At present, nano-scale carbon black fillers are used, and the preparation requires a large amount of energy consumption, and the cost is also greatly increased. [0005] ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/06C08L9/00C08K13/02C08K3/34C08K3/04B29C35/02
Inventor 邵水源王知石程程赵小亮尚文静严瑾
Owner XIAN UNIV OF SCI & TECH