Preparation method for resin for improving wet skid resistance of rubber and application of resin

A wet skid resistance and resin technology, applied in the rubber industry, can solve the problems of affecting the mechanical properties of rubber, waste of non-renewable resources, and shortening the service life of tires, and achieve the advantages of improving contact efficiency, high wet grip, and reducing rolling resistance. Effect

Active Publication Date: 2019-12-20
JIANGSU QIXIANG HIGH NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned resins are low-molecular-weight polymers with a high glass transition temperature. Although they can improve wet grip to a certain extent in the rubber composition, there will often be a glass transition of the resin phase in the high-temperature region, resulting in a Tanδ of 60°C. As the value increases, the rolling resistance increases significantly, which affects the mechanical properties of the rubber, reduces the service life of the tire, increases fuel consumption, and forms a waste of non-renewable resources.

Method used

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  • Preparation method for resin for improving wet skid resistance of rubber and application of resin
  • Preparation method for resin for improving wet skid resistance of rubber and application of resin
  • Preparation method for resin for improving wet skid resistance of rubber and application of resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1 (resin A: C9-phenol-silane preparation)

[0063] The preparation reaction formula of functionalized resin A is as follows:

[0064]

[0065] Specific steps:

[0066] 1. In a four-neck flask, dissolve 80g of C9 resin in xylene solvent and keep it at 70-80°C;

[0067] 2. Add a boron trifluoride catalyst of 0.8% by weight of C9 petroleum resin into the reaction system, and stir for half an hour;

[0068] 3. Add 20g of phenol and xylene mixture dropwise, keep the system temperature at 70-80°C, and stir continuously for 2-3h; the weight ratio of C9 petroleum resin to phenol is 4:1;

[0069] 4. Add water to the reaction solution for extraction, take the upper organic phase and distill under reduced pressure to obtain 90 g of the first step yellow resin product;

[0070] 5. 90g resin product is dissolved in xylene, adds the 3-chloropropyl triethoxysilane of resin product weight simultaneously, adds the NaI of the sodium ethylate of resin product weight 0.4% ...

Embodiment 2

[0072] Embodiment 2 (resin B: preparation of terpene-phenol-silane)

[0073] Replace the C9 resin in Example 1 with a terpene resin, and the rest of the steps are the same, the preparation reaction formula of resin B is as follows, and resin B is obtained.

[0074]

Embodiment 3

[0075] Embodiment 3 (resin C: ams-ENB-silane preparation)

[0076] The preparation method of functionalized resin C is as follows:

[0077]

[0078] Specific steps:

[0079] 1. In a four-necked flask, cool 50g of xylene solvent to -10°C, add 1% boron trifluoride catalyst based on the weight of xylene solvent, and stir for 0.5h;

[0080] 2. Add 100g ams monomer (a-methylstyrene) dropwise to the reaction system, and control the drop rate to control the system temperature at -8-0°C;

[0081] 3. After adding ams dropwise, continue to add 20g of ENB (5-ethylidene-2-norbornene) and xylene mixture dropwise, keep the system temperature at -8-0°C, and react for 3h; the ams monomer and ENB The weight ratio of (5-ethylidene-2-norbornene) is 4:1;

[0082] 4. Raise the temperature of the system to 70-80°C, and at the same time add 0.3% of the free radical initiator AIBN of the ams monomer weight and 3% of the ams monomer weight of γ-methacryloxypropyltrimethoxysilane ;

[0083] 5. ...

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Abstract

The invention discloses a preparation method for resin for improving wet skid resistance of rubber. The preparation method comprises the steps: (1) subjecting resin R and a functional group compound Bto a reaction, so as to obtain resin R-B and improve degree of polymerization of the resin R, wherein the resin R is selected from petroleum resin C9, petroleum resin C5, alpha-methylstyrene homopolymerized resin, resin DCPD, terpene resin, pinene resin and copolymerized resin based on alpha-methylstyrene as a principal chain, and the functional group compound B is selected from phenol, cardanol,ethylidene norbornene, rosin, hexa methoxy melamine resin (HMMM) and divinylbenzene; and (2) subjecting the resin R-B to a reaction with silane S, thereby obtaining resin R-B-S. The resin prepared bythe method is used for being added into the rubber, can be effectively dispersed inside the rubber and is distributed in tire treads during vulcanization, and thus, the wet skid resistance of the rubber is remarkably improved.

Description

technical field [0001] The invention belongs to the field of rubber industry, and in particular relates to a method for preparing a resin for improving the wet skid resistance of rubber. Background technique [0002] With the development of the economy and the progress of the society, people have higher and higher requirements on the safety, fuel economy and durability of tires. The indicators to measure these three performances are mainly grip, rolling resistance, and wear. However, improving one performance indicator will often lead to a decrease in other performance indicators, which is the so-called tire devil’s triangle. Therefore, how to effectively balance the devil’s triangle is a key issue for tire companies. important problem. [0003] Among them, among the various parts of the tire, the contribution of the tread to the rolling resistance and wet grip is very important. About 50% of the rolling resistance in the tire comes from the tread, and the braking of the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/42C08F8/00C08F240/00C08F32/08C08F232/08C08F212/12C08L9/06C08L9/00C08L7/00C08L57/02C08L45/00C08K13/06C08K3/36C08K3/04C08K3/22C08K5/09
CPCC08F8/42C08F232/08C08K2003/2296C08L9/06C08L2205/02C08L2205/035C08F8/00C08F240/00C08F32/08C08F212/12C08L9/00C08L7/00C08L57/02C08K13/06C08K3/36C08K3/04C08K3/22C08K5/09C08L45/00
Inventor 姚翔彭华龙李斌斌徐黎明
Owner JIANGSU QIXIANG HIGH NEW MATERIAL
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