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Rubber composition, preparation method thereof and rubber product

A rubber composition and rubber technology, applied in the field of rubber products, can solve the problems of insignificant improvement of the adhesion performance of the rubber composition, and achieve the effects of good adhesion performance and high viscosity

Active Publication Date: 2021-03-19
BEIJING RED AVENUE INNOVA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The related art improves the performance of the rubber composition by adjusting the modified adhesive resin, however, the improvement of the adhesive performance of the rubber composition is not significant

Method used

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  • Rubber composition, preparation method thereof and rubber product
  • Rubber composition, preparation method thereof and rubber product
  • Rubber composition, preparation method thereof and rubber product

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-6

[0107] Preparation Example 1-6: Mix 0.5mol (151g) of cardanol, 30g of distilled water, 50ml of toluene and 0.55g of triethanolamine, gradually raise the temperature to 85°C, stir to dissolve, and gradually add 0.85mol (25.5g) of Solid formaldehyde, react at reflux at 98°C for 3.5h, add 1.20g of dodecylbenzenesulfonic acid to neutralize, then add 0.66mol mixed alkyl resorcinol, react at 90°C for 1h, change to distillation state and then gradually increase the temperature to 160°C, and then carry out vacuum distillation to obtain deep red mixed alkyl resorcinol modified adhesive resins, which are respectively resins 1-6; wherein, the types and contents of mixed alkyl resorcinols are shown in Table 1 shown.

[0108] The kind and content of alkyl resorcinol in table 1 preparation example 1-6

[0109]

[0110] The content of free resorcinol in the preparation example 1-6 of table 2

[0111]

[0112] Preparation example of alkylphenol sulfide

[0113] Add 79.2g (0.4mol) of ...

Embodiment 1-6 and comparative example 1

[0143] Embodiment 1-6 and comparative example 1: the preparation of rubber composition is as follows:

[0144]Add rubber, carbon black, zinc oxide, and stearic acid into a 1.6-liter Banbury internal mixer (produced by FARREL Company) and mix, and heat up to 155°C while mixing for 6 minutes, then cool to about 90°C; then add accelerator CZ, Cobalt salt, anti-aging agent RD, S, HMMM, mixed alkyl resorcinol modified cardanol-formaldehyde binding resin, the above mixture was mixed at a temperature of 50 ° C for 5 minutes, so as to obtain an unvulcanized rubber composition; The rubber composition was molded on a BH-25T plate vulcanizer (produced by Bohai Experimental Machinery Factory, Zhenwu Town, Jiangdu District) to make a flat or thin vulcanized rubber composition. The specific formula is shown in Table 3.

[0145] The raw material ratio of rubber composition in table 3 embodiment 1-6 and comparative example 1

[0146]

[0147] Adhesive strength test result (KN / m) in table ...

Embodiment 7-10

[0151] Embodiment 7-10: The difference from Example 1 is that the alkylphenol sulfide and the alkylphenol modified amino resin are added and mixed with the mixed alkylresorcinol modified cardanol-formaldehyde binding resin, The formulation of the rubber composition is shown in Table 5.

[0152] The raw material ratio of rubber composition in table 5 embodiment 7-10

[0153]

[0154] Adhesive strength test result (KN / m) among table 6 embodiment 7-10

[0155]

[0156] The detection results of vulcanization performance and mechanical properties in Table 7 embodiment 5 and embodiment 7-10

[0157]

[0158] Shown in conjunction with table 6 and table 7, by comparing with embodiment 7-8, the bonding performance of embodiment 5 is far higher than the bonding performance index of embodiment 7-8, therefore, add mixed alkyl resorcinol separately The adhesive performance of the rubber composition of the phenol-modified cardanol-formaldehyde adhesive resin is better than that o...

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Abstract

The invention relates to the technical field of rubber products, and particularly discloses a rubber composition, a preparation method thereof and a rubber product. The rubber composition comprises the following components in parts by weight: 100 parts of rubber, 20-80 parts of carbon black, 0.5-5 part of vulcanizing agent and 1-10 parts of mixed alkyl resorcinol modified cardanol formaldehyde bonding resin, and the mixed alkyl resorcinol modified cardanol formaldehyde bonding resin comprises a formula (1) and a formula (2), the mixed alkyl resorcinol modified cardanol formaldehyde adhesive resin is terminated by alkyl resorcinol; the preparation method of the rubber composition comprises the following steps: mixing rubber and carbon black, heating to 140-160 DEG C, cooling to 80-95 DEG C,adding the vulcanizing agent and the mixed alkyl resorcinol modified cardanol formaldehyde adhesive resin, and mixing at 40-50 DEG C for 4-10 minutes to obtain the rubber composition. The rubber composition of the present application has excellent adhesion properties.

Description

technical field [0001] The present application relates to the technical field of rubber products, more specifically, it relates to a rubber composition, a preparation method thereof and rubber products. Background technique [0002] The bonding layer of steel wire skeleton material depends on the initial bonding strength, as well as the rubber-steel wire bonding strength retention rate, heat aging, salt aging, humidity aging and steam aging and other factors. The variety and quality of the adhesive are the main factors affecting the adhesive performance. [0003] In the manufacture of automobile tires, in order to improve the bonding strength between the cord layer of the tire and the rubber, the methylene acceptor and the methylene donor are usually added to form an adhesive system before the vulcanization of the rubber. Resinization reaction forms a vulcanized rubber-resin network, thereby enhancing the physical and mechanical properties of the vulcanized rubber and the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L61/06C08L61/34C08K13/02C08K3/04C08K5/375C08G8/24C08L21/00
CPCC08L7/00C08G8/24C08L21/00C08L2201/08C08L61/06C08L61/34C08K13/02C08K3/04C08K5/375
Inventor 张洁卢佳张成王光辉蒋小强董栋张宁
Owner BEIJING RED AVENUE INNOVA
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