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Rubber material containing phenolic tackifying resin

A technology of tackifying resin and rubber material, applied in the field of rubber materials containing phenolic tackifying resin, can solve the problems of trapping air and affecting the quality of finished products, and achieves the effects of slow migration speed, improved physical and mechanical properties, and good compatibility

Active Publication Date: 2014-05-07
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

[0017] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, raise the temperature to 90°C to dissolve it completely, add hydrochloric acid until the reaction boils for 3 hours, dissolve it with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 5:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 30 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and stand to separate. , take the supernatant and wash it with distilled water to PH7, and obtain allyl p-tert-butylphenyl ether formaldehyde resin after vacuum distillation, the yield is 89%, and the purity is 98.2%.

Embodiment 2

[0019] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, heat up to 100°C to dissolve completely, add hydrochloric acid until the reaction boils for 4 hours, dissolve with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 4:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 60 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and let stand to separate. , Take the supernatant and wash it with distilled water to PH7, and obtain allyl p-tert-butylphenyl ether formaldehyde resin after vacuum distillation, the yield is 91%, and the purity is 98.5%.

Embodiment 3

[0021] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, raise the temperature to 120°C to dissolve it completely, add hydrochloric acid until the reaction boils for 4 hours, dissolve it with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 2:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 60 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and let stand to separate. , Take the supernatant and wash it with distilled water to PH7, and obtain allyl p-tert-butylphenyl ether formaldehyde resin after vacuum distillation, the yield is 89.5%, and the purity is 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 phenolic tackifying resin. Background technique [0002] In the production of rubber products, especially radial tires and bias rubber tires, they are often formed by lamination, which requires unvulcanized rubber materials to have high molding adhesion. Natural rubber has good self-adhesiveness, so the process performance is good; although synthetic rubber has wear resistance, aging resistance and some special advantages, it is difficult to form because of the lack of sufficient self-adhesiveness. Phenolic resin to improve the self-adhesiveness of synthetic rubber. [0003] In the product 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 bead parts and belt edges. Its main function is: (1) to keep the semi-finished parts well bonded during molding; (2) to make th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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