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A kind of atmospheric pressure low temperature vulcanized self-absorbing water vapor rubber compound and its preparation process and application

A low-temperature vulcanization and rubber compound technology, which is applied in the field of atmospheric pressure and low-temperature vulcanization self-absorption air rubber compound, can solve the problems affecting the density and overall physical and mechanical properties of the vulcanized compound, and cannot meet the construction requirements, and achieves good applicability. , to avoid scorch, to ensure the effect of use requirements

Active Publication Date: 2022-05-20
GUIZHOU AEROSPACE PRECISION PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing rubber compound preparation process, when the rubber compound is prepared, since each compounding agent of the rubber contains a small amount of water vapor and the water vapor generated during the vulcanization process will cause the compound to form bubbles or cavities during the vulcanization process, affecting vulcanization. The density and overall physical and mechanical properties of the rubber can not meet the construction requirements of normal pressure low temperature vulcanized rubber lining products and other normal pressure low temperature vulcanized products under the on-site construction conditions

Method used

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  • A kind of atmospheric pressure low temperature vulcanized self-absorbing water vapor rubber compound and its preparation process and application
  • A kind of atmospheric pressure low temperature vulcanized self-absorbing water vapor rubber compound and its preparation process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An application method of a self-absorbing water-air rubber compound vulcanized under normal pressure and low temperature in the preparation of rubber lining products:

[0024] S1. Weighing and compounding: Weigh each component according to the formula; then mix calcium oxide, aluminum oxide, and charcoal powder evenly to prepare a water-absorbing compounding agent; mix basic raw rubber, plasticizer, microcrystalline paraffin , The reinforcing filler is mixed evenly to obtain a premix; the vulcanizing agent and vulcanization accelerator are weighed and placed in isolation;

[0025] S2. Mastication: Evenly mix the premix and two-thirds of the water-absorbing compounding agent into the rubber mixing equipment for plastication to obtain plasticized rubber;

[0026] S3. One-stage mixing: mix the masticated rubber, vulcanization accelerator, zinc oxide, stearic acid, anti-aging agent and the remaining water-absorbing compounding agent evenly and put them into the internal mix...

Embodiment 2

[0039] An application method of a self-absorbing water-air rubber compound vulcanized under normal pressure and low temperature in the preparation of rubber lining products:

[0040] S1. Weighing and compounding: Weigh each component according to the formula; then mix calcium oxide, aluminum oxide, and charcoal powder evenly to prepare a water-absorbing compounding agent; mix basic raw rubber, plasticizer, microcrystalline paraffin , The reinforcing filler is mixed evenly to obtain a premix; the vulcanizing agent and vulcanization accelerator are weighed and placed in isolation;

[0041] S2. Mastication: Evenly mix the premix and 4 / 5 of the water-absorbing compounding agent into the rubber mixing equipment for plastication to obtain plasticized rubber;

[0042] S3. One-stage mixing: mix the masticated rubber, vulcanization accelerator, zinc oxide, stearic acid, anti-aging agent and the remaining water-absorbing compounding agent evenly and put them into the internal mixer for ...

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Abstract

The invention provides a self-absorbing water-air rubber compound vulcanized under normal pressure and low temperature. 3-5 parts of zinc, 1 part of stearic acid, 3-8 parts of plasticizer, 2 parts of anti-aging agent, 3 parts of microcrystalline paraffin, 45-60 parts of reinforcing filler, 1-10 parts of calcium oxide, 0.5 parts of aluminum oxide ‑3 parts, charcoal powder 1‑5 parts. The vulcanizing agent is sulfur. The fineness of the charcoal powder is 200 mesh; its preparation method includes weighing and blending, mastication, one-stage mixing, cooling, two-stage mixing, rapid cooling, back-milling and extrusion, and glue-vulcanization. The special moisture-absorbing and air-absorbing compounding agent mixed in the raw materials of the present invention can effectively absorb the trace moisture brought in by the various components of the rubber material and the moisture generated during the vulcanization of the compound rubber; moreover, the present invention is also suitable for on-site construction It can be vulcanized under normal pressure with hot air or hot water as the heating medium, which has good applicability, economy and operability.

Description

technical field [0001] The invention relates to the technical field of rubber compound formula and rubber mixing, in particular to a normal-pressure low-temperature vulcanized self-absorbing water-air rubber compound and its preparation process and application. Background technique [0002] With the continuous development and advancement of industrialization, the demand for rubber compounds is getting higher and higher, and the working conditions for rubber compounds are becoming more and more stringent. Due to the diversification of product applications, some require on-site construction, and the rubber formula still needs to be applied. Satisfy the normal pressure and low temperature vulcanization under the on-site construction conditions. However, in the existing rubber compound preparation process, when the rubber compound is prepared, since each compounding agent of the rubber contains a small amount of water vapor and the water vapor generated during the vulcanization ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
CPCC08L21/00C08K2003/2296C08L91/06C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
Inventor 邹明奎许大伟梁龙丁中华吕春莲
Owner GUIZHOU AEROSPACE PRECISION PRODS
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