Rubber material containing phenolic tackifying resin

A technology for tackifying resins and rubber materials, which is applied in the field of rubber materials containing phenolic tackifying resins. It can solve the problems of trapping air and affecting the quality of finished products, and achieve the effects of slow migration speed, improved physical and mechanical properties, and good flexibility

Active Publication Date: 2012-03-28
LIANYUNGANG REBO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a non-stick problem in the thin film, it will cause air to be trapped during the green tire molding, which will affect the quality of the finished product

Method used

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  • Rubber material containing phenolic tackifying resin
  • Rubber material containing phenolic tackifying resin
  • Rubber material containing phenolic tackifying resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix p-tert-butylphenol and formaldehyde in a molar ratio of 1:1, heat up to 90°C to dissolve it completely, add hydrochloric acid until the reaction boils for 3 hours, dissolve with toluene, wash with hot water until neutral, and press The resin and allyl chloride were mixed at a molar ratio of 5:1, dissolved in ethanol, and 1M potassium hydroxide solution was added to adjust the pH to 10. After heating for 30min, extract with toluene, add 0.5M hydrochloric acid for washing, and let stand for stratification. , the upper layer was washed with distilled water to pH 7, and allyl-p-tert-butylphenyl ether formaldehyde resin was obtained after distillation under reduced pressure, the yield was 89%, and the purity was 98.2%.

Embodiment 2

[0016] Mix p-tert-butylphenol and formaldehyde in a molar ratio of 1:1, heat up to 100°C to dissolve it completely, add hydrochloric acid to the reaction and boil for 4 hours, dissolve with toluene, wash with hot water until neutral, and press the obtained resin according to The resin and allyl chloride were mixed at a molar ratio of 4:1, dissolved in ethanol, and 1M potassium hydroxide solution was added to adjust the pH to 10. After heating for 60min, extract with toluene, add 0.5M hydrochloric acid for washing, and let stand for stratification. , the upper layer was washed with distilled water to pH 7, and allyl-p-tert-butylphenyl ether formaldehyde resin was obtained after distillation under reduced pressure, the yield was 91%, and the purity was 98.5%.

Embodiment 3

[0018] Mix p-tert-butylphenol with formaldehyde in a molar ratio of 1:1, heat it up to 120°C to dissolve it completely, add hydrochloric acid to the reaction and boil for 4 hours, dissolve with toluene, wash with hot water until neutral, and press The resin and allyl chloride were mixed in a molar ratio of 2:1, dissolved in ethanol, and 1M potassium hydroxide solution was added to adjust the pH to 10. After heating for 60min, extract with toluene, add 0.5M hydrochloric acid for washing, and let stand for stratification. , the upper layer was washed with distilled water to pH 7, and allyl p-tert-butyl phenyl ether formaldehyde resin was obtained after distillation under reduced pressure, the yield was 89.5%, and the purity was 97.5%.

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Abstract

The invention discloses a rubber material containing a phenolic tackifying resin, which comprises from the following formula components in part by mass: 10 to 50 parts of natural rubber, 50 to 90 parts of butadiene styrene rubber, 40 to 100 parts of high-wear-resistance furnace black, 2 to 10 parts of zinc oxide, 1 to 5 parts of stearic acid, 1 to 4 parts of sulfur, 0.5 to 2.5 parts of accelerator CZ, 0.5 to 4 parts of antiaging agent 4020, and 1 to 10 parts of melamine formaldehyde (MF) resin. The MF resin is allyl p-tert-butyl phenyl ether formaldehyde resin. The MF resin contains not only polar phenolichydroxyl but also allyl double bond; therefore, compared with unmodified p-tert-butyl phenolic resin (BF resin), the MF resin can provide high initial self-tackifying strength for rubber materials, has long-lasting tackifying capacity, and improves the crosslinking density and physical and mechanical properties of vulcanized rubber.

Description

technical field [0001] The invention relates to the technical field of rubber formulations, in particular to a rubber material containing a phenolic tackifying resin. Background technique [0002] In the production of rubber products, especially radial tires and slanted tires, the lamination method is often used to form, which requires the unvulcanized rubber to have high forming adhesion. Natural rubber has good self-adhesion, so it has good process performance; although synthetic rubber has wear resistance, aging resistance and some special advantages, it is difficult to form due to its lack of sufficient self-adhesion. Phenolic resin to improve the self-adhesion of synthetic rubber. [0003] In the design of all-steel radial tires, thin films with good viscosity (0.8-2.5mm, width 30-150mm) are used in many places such as the bead and the edge of the belt. Its main functions are: (1) to keep the semi-finished parts in good adhesion during molding; (2) to make the interfa...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L7/00C08L61/14C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08G8/36C08G8/12
Inventor 陈朝晖李幸秦霞孙仙平
Owner LIANYUNGANG REBO CHEM CO LTD
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