Resin for improving rubber tear resistance and preparation method thereof

A technology of resin and rubber composition, which is applied in the field of phenol-dicyclopentadiene resin and its preparation, can solve problems such as complex production, and achieve the effects of excellent product performance, low price, and abundant raw material resources

Active Publication Date: 2014-03-26
BEIJING RED AVENUE INNOVA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Chinese application number 201110201496.5 and application number 200810073637.8, the tread rubber formula patents add anti-crack resin to improve the tear resistance of the tire, but the rubber compositions of the two patents also

Method used

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  • Resin for improving rubber tear resistance and preparation method thereof
  • Resin for improving rubber tear resistance and preparation method thereof
  • Resin for improving rubber tear resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] 1.1 Preparation and performance test of phenolic resin

[0034] Softening point test:

[0035] According to the standard ASTM D3461-97 (2007), the FP900 calorific value analysis system is used to test the softening point of phenolic resin.

Embodiment 1

[0037] Add 1mol of phenol, 50ml of toluene, and BF to a 500ml round bottom flask equipped with a stirring device, a thermometer and a reflux condenser. 3 ·Et 2 O catalyst 5ml, pass N 2 Protect, warm up to 80°C to completely dissolve phenol, slowly add 1mol DCPD dropwise, control the reaction temperature at 110-120°C, after 3h reaction, add 2mL ethanol to quench the catalyst, change to distillation state to distill toluene solvent and then return to reflux state. Add 0.5 g of dodecyl benzene sulfonic acid, add 0.5 mol of a-methyl styrene drop by drop, react for 5 hours, change the condenser from reflux state to distillation state, heat the reactant to 200 ℃, slowly turn on the vacuum to the maximum vacuum The temperature is maintained for 15 minutes, and the material is discharged after neutralization with sodium hydroxide. A-methylstyrene modified phenol-DCPD resin is obtained. The softening point of the resin was determined to be 109.2°C.

Embodiment 2～7

[0039] The molar ratio of phenol and DCPD, the amount and type of catalyst and solvent were changed, and the resin preparation process in Example 1 was repeated. For specific data, see Table 3 below:

[0040] table 3

[0041]

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Abstract

The invention relates to resin for improving rubber tear resistance, in particular to olefin modified phenol-DCPD (Dicyclopentadiene) resin and a preparation method thereof. The olefin modified phenol-DCPD resin is characterized in that firstly, phenol and DCPD are used for carrying out the Friedel-Crafts alkylation reaction through the boron trifluoride-ether catalysis to synthesize the phenol-DCPD resin, and then the phenol-DCPD resin reacts with an unsaturated olefin compound under an acid condition to obtain the olefin modified phenol-DCPD resin of which the softening point is 60-140 DEG C. Furthermore, selected raw materials of the resins are rich in resources and low in cost, and the prepared product has excellent performance and can improve the tear resistance, heat-oxygen aging resistance, wear resistance and the like of rubber after being added to rubber materials. In addition, a rubber composition added with the resin forms one or more tyre parts which comprise a tread of the tyre, a tyre enhanced body of the tyre, a bottom tread of the tyre, a sidewall of the tyre or a combination thereof.

Description

Technical field [0001] The present invention relates to the rubber industry, in particular to a resin for improving rubber tear resistance, and more particularly to a phenol-dicyclopentadiene (DCPD) resin modified by an unsaturated olefin compound and a preparation method thereof. Background technique [0002] Mining trucks and trucks have a large carrying capacity and need to travel under harsh soil, gravel, sharp ore and other road conditions. At the same time, due to the faster driving speed of the vehicle, the greater impact on the tires, and the ore cutting and puncture , The destructive effects such as strong abrasion of the road surface, so the tires are required to have good impact resistance, tensile strength, wear resistance and other properties. [0003] Improving the tear resistance of the rubber is an important factor related to the durability of the tire. The improvement of the tear resistance of the rubber will help improve the cutting and chipping resistance of the ...

Claims

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Application Information

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IPC IPC(8): C08G61/02C08L7/00C08L9/06C08L9/00C08L65/00
Inventor 张洁张成姚居峰王文芳董栋
Owner BEIJING RED AVENUE INNOVA
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