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Preparation method of anti-yellowing long-acting anti-aging material

A technology of anti-yellowing and alkali reduction wastewater, which is applied in the field of rubber additives, can solve the problems of reduced mechanical properties, shortened service life, and changes in physical and mechanical properties, and achieves improved stability, good complexation, and improved mechanical strength. Effect

Pending Publication Date: 2022-04-08
常州市五洲化工有限公司
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Problems solved by technology

[0002] During the use of rubber, it will be affected by external factors (such as ozone aging, thermal oxygen aging, etc.) and age, resulting in changes in its physical and mechanical properties, making the rubber lose its elasticity, reducing its mechanical properties and shortening its service life.

Method used

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  • Preparation method of anti-yellowing long-acting anti-aging material

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preparation example Construction

[0024] A preparation method of a yellowing-resistant long-acting anti-aging material, the specific preparation process is as follows:

[0025] S1: Preparation of terephthalic acid metal salt composite organic framework material by using alkali reduction wastewater;

[0026] S2: Prepare the maleic anhydride organic solution in the reaction kettle, then add a certain amount of m-phenylenediamine to the prepared maleic anhydride organic solution, heat to 120-150°C under normal pressure and mix and reflux for 4-8h , filtered, washed, and dried in vacuum at 50° C. to obtain m-phenylene bismaleimide;

[0027] S3: Under constant stirring, dissolve the terephthalic acid metal salt compound organic framework material and m-phenylene bismaleimide in dimethylformamide according to a certain mass ratio, and heat up to 45-50°C Insulate for 30-60 minutes, then vacuum distill the mixture of dimethylformamide and water to obtain the coordination chelate;

[0028] S4: Pulverize the chelate c...

Embodiment 1

[0034] A kind of preparation method of anti-yellowing long-acting anti-aging material is: in the maleic anhydride organic solution of 2mol / L, add a certain amount of m-phenylenediamine (the molar ratio of maleic anhydride / m-phenylenediamine is 1: 1), heated to 145°C under normal pressure, mixed and refluxed for 5 hours, filtered, washed, and vacuum-dried at 50°C to obtain m-phenylene bismaleimide (maleic anhydride and m-phenylenediamine added The molar ratio is 1:1); under constant stirring, the metal terephthalate compounded organic framework material and m-phenylene bismaleimide are mixed in a certain mass ratio (the compounded terephthalic acid metal salt The mass ratio of organic framework material to m-phenylene bismaleimide is 5:1) dissolved in dimethylformamide, heated to 50°C and kept for 30min, then dimethylformamide and water were evaporated in vacuum mixture to obtain a coordination chelate; the chelate prepared in step S3 is pulverized at normal temperature to obta...

Embodiment 2

[0036] A kind of preparation method of anti-yellowing long-acting anti-aging material is: in the maleic anhydride organic solution of 2mol / L, add a certain amount of m-phenylenediamine (the molar ratio of maleic anhydride / m-phenylenediamine is 1: 1), heated to 145°C under normal pressure, mixed and refluxed for 6 hours, filtered, washed, and vacuum-dried at 50°C to obtain m-phenylene bismaleimide (maleic anhydride and m-phenylenediamine added The molar ratio is 1:1); under constant stirring, the metal terephthalate compounded organic framework material and m-phenylene bismaleimide are mixed in a certain mass ratio (the compounded terephthalic acid metal salt The mass ratio of organic framework material and m-phenylene bismaleimide is 3:1) dissolved in dimethylformamide, heated to 45°C and kept for 45min, then vacuum distilled out dimethylformamide and water mixture to obtain a coordination chelate; the chelate prepared in step S3 is pulverized at normal temperature to obtain t...

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Abstract

The invention discloses a preparation method of an anti-yellowing long-acting anti-aging material. The preparation method comprises the following specific preparation processes: S1, preparing a terephthalic acid metal salt compounded organic framework material by using alkali-minimization wastewater; s2, m-phenylenediamine is added into the prepared maleic anhydride organic solution, and m-phenylene bismaleimide is obtained; s3, under continuous stirring, dissolving the terephthalic acid metal salt compounded organic framework material and m-phenylene bismaleimide in dimethylformamide according to a certain mass ratio to obtain a coordination chelate; and S4, crushing the chelate prepared in the step S3 at normal temperature to obtain a target product. The m-phenylene maleic amide polymer prepared by polycondensation of maleic anhydride and m-phenylenediamine has reactive NH groups and maleic double bonds on the polymer, and can protect and stabilize degradation of vulcanized rubber.

Description

technical field [0001] The invention belongs to the field of rubber additives and relates to a preparation method of a yellowing-resistant long-acting anti-aging material. Background technique [0002] During the use of rubber, it will be affected by external factors (such as ozone aging, thermal oxygen aging, etc.) and age, resulting in changes in its physical and mechanical properties, making the rubber lose its elasticity, reducing its mechanical properties and shortening its service life. In order to solve the problem of rubber aging, it is necessary to add anti-aging materials to the rubber in order to inhibit or delay the aging process and prolong the service life. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the present invention provides a preparation method of a yellowing-resistant long-acting anti-aging material, using terephthalic acid metal salt compounded organic framework material as a carrier, m-phenylene bismaleimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08L7/00
Inventor 方春平唐英俊张小丽
Owner 常州市五洲化工有限公司
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