Method for preparing protective material for rubber by recycling textile white mud

A protective material and resource-based technology, applied in the field of rubber formulations, can solve problems such as insufficient long-term protective effect, influence on mixing effect, redness of products, etc., achieve excellent short-term protective performance, good long-term protective performance, and solve easy caking Effect

Inactive Publication Date: 2020-03-27
常州市五洲环保科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, 4020 also has several deficiencies: 1) The defect of low melting point makes it easy to agglomerate during storage, and it will affect the mixing effect due to slippage caused by instant melting in the internal mixer; 2) It is easy to migrate in vulcanized rubber. When extracted, the short-term protection effect is excellent, but the long-term protection effect is insufficient; 3) It is dark brown and migrates to the surface of the product, which is easy to cause redness of the product
However, the price of p-quinonediimine anti-aging agents on the market is extremely high, generally above 100,000 / ton, and there is also the defect that the mixing effect is affected by the slippage caused by instant melting in the internal mixer

Method used

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  • Method for preparing protective material for rubber by recycling textile white mud

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Comparison scheme
Effect test

Embodiment 1

[0026] A kind of textile white clay resources of the present invention prepares the method for protective material for rubber, comprises the following steps:

[0027] (1) Preparation of metal-organic framework material precursor: under constant stirring, add textile clay into 1% sodium hydroxide solution according to the stoichiometric relationship, and after it is completely dissolved, add 0.5% activated carbon in the mass percentage of the solution , stirred for 10 min to make it evenly dispersed in the solution, and then filtered to obtain the decolorized sodium terephthalate clarified solution 1;

[0028] (2) Under continuous stirring, add the pre-configured calcium chloride solution with a mass percentage of 25% to the clarified liquid 1 obtained in step (1), continue to stir and react at a speed of 50r / min for 20min, then filter and wash 1. Obtain calcium terephthalate organic framework material after drying;

[0029] (3) Under continuous stirring, add the calcium terep...

Embodiment 2

[0038] The difference between embodiment 2 and embodiment 1 is:

[0039] A kind of textile white clay resources of the present invention prepares the method for protective material for rubber, comprises the following steps:

[0040] In step (1), the metal-organic framework material precursor is prepared: under constant stirring, add textile white mud to 35% sodium hydroxide solution according to the stoichiometric relationship, and after it is completely dissolved, add 0.5% activated carbon, stirred for 20min to make it evenly dispersed in the solution, and then filtered to obtain the decolorized sodium terephthalate clarified solution 1;

[0041] In step (2), under continuous stirring, add the pre-configured saturated calcium chloride solution into the clarified liquid 1 obtained in step (1), continue to stir and react at a speed of 700r / min for 150min, then filter, wash, Obtain calcium terephthalate organic framework material after drying;

[0042] In step (5), after mixin...

Embodiment 3

[0046] The difference between embodiment 3 and embodiment 1 is:

[0047] A kind of textile white clay resources of the present invention prepares the method for protective material for rubber, comprises the following steps:

[0048] In step (1), the metal-organic framework material precursor is prepared: under constant stirring, add textile white mud to 20% sodium hydroxide solution according to the stoichiometric relationship, and after it is completely dissolved, add 0.5% activated carbon, stirred for 15 minutes to make it uniformly dispersed in the solution, and then filtered to obtain the decolorized sodium terephthalate clarified solution 1;

[0049] In step (2), under continuous stirring, the pre-configured calcium chloride solution with a mass percentage of 32% is added to the clarified liquid 1 obtained in step (1), and the stirring reaction is continued at a speed of 500r / min for 60min. Then filter, wash and dry to obtain calcium terephthalate organic framework mater...

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Abstract

The invention relates to a method for preparing a protective material for rubber by recycling textile white mud. The preparation method is characterized by comprising the steps: 1) dissolving the textile white mud in sodium hydroxide, filtering with activated carbon after complete dissolution to obtain a sodium terephthalate clarified solution, adding a pre-prepared calcium chloride solution intothe clarified solution, filtering, washing and drying to obtain a calcium terephthalate organic framework material; 2) respectively dissolving the organic framework material obtained in the 1) and ananti-aging agent 4020 in dimethylformamide to obtain respective solutions; 3) mixing the solutions obtained in the 2), and carrying out a reaction under certain conditions under the action of a catalyst and an oxidant to obtain a coordination chelate; and 4) finally cooling to a proper temperature, and crushing to obtain the target product. The obtained product has the advantages of obvious priceadvantage, low possibility of caking, and capability of providing full-life-cycle protection for rubber products and preventing the products from becoming red.

Description

technical field [0001] The product prepared by the invention is suitable for rubber formulations, and in particular relates to a preparation method of a protective material for rubber which has long-term protection and can prevent discoloration of products. Background technique [0002] During the processing, storage and use of rubber and its products, aging symptoms such as cracking, stickiness, hardening, softening, pulverization, discoloration, and mildew will appear due to the combined effects of internal and external factors, and finally lose their use value. The more important aging factors are: oxidative aging, thermal aging, ozone aging, fatigue aging, photocatalytic aging and heavy metal ion catalytic aging. [0003] Rubber anti-aging agents can be divided into naphthylamines, quinolines, p-phenylenediamines and diphenylamines according to their structure. Among them, p-phenylenediamines and quinolines are mainly suitable for tires, especially radial tires. Anti-ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K5/18C08G83/00C08L7/00C08L91/06C08K13/06
CPCC08G83/008C08K5/18C08K9/12C08L7/00C08L2201/08C08L91/06C08K13/06
Inventor 张莉娜唐英俊方春平
Owner 常州市五洲环保科技有限公司
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