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Economical rubber additive as well as preparation method and application thereof

An economical technology of rubber additives, applied in the field of economical rubber additives and its preparation, can solve the problems of high cost, achieve the effects of improving color, good storage stability, and improving product quality

Active Publication Date: 2020-10-16
山东京博中聚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calcium stearate needs to be evenly dispersed in the whole system, so that the calcium content in the rubber can be uniform and stable. If calcium stearate powder is directly added to the system, it cannot play a good dispersion effect; directly purchase 50% liquid stearic acid Calcium is used as a heat stabilizer, the cost is high, and its components contain surfactants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides a kind of preparation method of economical rubber auxiliary agent, comprises the following steps:

[0017] Mix calcium stearate, zinc stearate, organic solvent and rubber glue, and stir at 25-40°C to obtain economical rubber additives;

[0018] The mass ratio of described calcium stearate and zinc stearate is 1:0.03~1:0.2;

[0019] The mass ratio of the calcium stearate to the rubber glue is 1:0.13˜1:0.66.

[0020] In the present invention, described calcium stearate, zinc stearate, organic solvent and rubber glue are commercially available goods.

[0021] The concentration of the rubber glue is 10-35wt%. In a specific embodiment, the concentration of the rubber glue is 15wt%, 18wt%, 20wt% or 30wt%. The rubber glue is brominated butyl rubber glue. The solvent in the rubber glue is preferably consistent with the type of organic solvent used in the preparation of economical rubber additives. The organic solvent is preferably selected from one o...

Embodiment 1

[0033] In rubber additives, the mass ratio of calcium stearate and glue solution is 1:0.2, and the mass ratio of calcium stearate and zinc stearate is 1:0.05, and its preparation method comprises the following steps:

[0034] (1) Prepare 15%wt bromobutyl rubber glue (n-hexane is the solvent), and add it into a glass four-necked flask with a volume of 1L (with stirring);

[0035] (2) Weigh 22.5g of calcium stearate and 1.125g of zinc stearate, and add them into a glass four-neck flask with a volume of 1L (with stirring);

[0036] (3) Weigh 108 g of n-hexane and add it into a glass four-neck flask. Finally, take by weighing 4.5 g of the glue solution in step (1), and add it to a glass four-neck flask;

[0037] (4) Put the glass four-neck flask in step (3) into a water bath at 38°C, and stir evenly for about 24 hours. The prepared additive is a white emulsion with good fluidity. Add this additive to prepare the finished product The color of the glue is uniform, and the color is...

Embodiment 2

[0041] In rubber additives, the mass ratio of calcium stearate and glue solution is 1:0.53, and the mass ratio of calcium stearate and zinc stearate is 1:0.07, and its preparation method comprises the following steps:

[0042] (1) Be formulated with 20%wt bromobutyl rubber glue solution (n-hexane is solvent), add volume and be in the glass four-necked flask of 1L (with stirring);

[0043] (2) Take by weighing 22.5g calcium stearate, 1.575g zinc stearate, add in the glass four-neck flask (with stirring) that volume is 1L;

[0044] (3) Weigh 115.5 g of n-hexane and add it into a glass four-neck flask. Finally, take by weighing 12g of glue solution in step (1) respectively, and join in the glass four-necked flask;

[0045] (4) Put the glass four-neck flask in step (3) into a water bath at 28°C, and stir evenly for about 28 hours. The prepared additive is a white emulsion with good fluidity. The finished product prepared by adding this additive The color of the glue is uniform, ...

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Abstract

The invention provides an economical rubber additive and a preparation method and application thereof. The method comprises the steps that calcium stearate, zinc stearate, an organic solvent and a rubber solution are mixed and stirred at the temperature of 25-40 DEG C, and the economical rubber additive is obtained; wherein the mass ratio of the calcium stearate to the zinc stearate is 1:0.03-1:0.2; wherein the mass ratio of the calcium stearate to the rubber liquid is 1:0.13-1:0.66. The zinc stearate and the rubber liquid are added into the calcium stearate, and the addition amount and the stirring temperature are controlled, so that the obtained rubber additive has relatively good flowability; the storage stability is good, and the additive can be directly added without dilution during use, so that time is saved. The color of the finished rubber product prepared after the rubber additive is added is uniform, and the color is still uniform and stable after the finished rubber productis placed in a laboratory at normal temperature for 30 days; wherein the T90 is 6.8-6.9 minutes, the 300% definite elongation of the rubber is 7.2-7.8 MPa, and the tensile strength is 17.0-17.7 MPa.

Description

technical field [0001] The invention belongs to the technical field of rubber auxiliary preparation, and in particular relates to an economical rubber auxiliary and its preparation method and application. Background technique [0002] In the coagulation stage of synthetic rubber, calcium stearate needs to be injected to prevent the rubber from agglomerating, and to control the size of the colloidal particles to play the role of dispersion and isolation. The calcium stearate needs to be evenly dispersed in the whole system, so that the calcium content in the rubber can be uniform and stable. If calcium stearate powder is directly added to the system, it cannot play a good dispersing effect; directly purchase 50% liquid stearic acid Calcium is used as a heat stabilizer, the cost is high, and its components contain surfactants. Contents of the invention [0003] In view of this, the object of the present invention is to provide an economical rubber auxiliary agent and its pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/098C08L9/00C08L23/22C08L23/28
CPCC08K5/098C08L9/00C08L23/22C08L23/283C08K2201/014
Inventor 卜立敏谢晴李立霞张晓岭栾波任学斌牟庆平
Owner 山东京博中聚新材料有限公司