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A kind of environment-friendly rubber vulcanization activator and its preparation method and application

A technology of vulcanization active agent and environmentally friendly rubber, applied in the field of rubber additives, can solve the problems of low practicability, serious reversion, and high vulcanization temperature, and achieve the effects of reducing zinc content, improving the degree of reaction, and reducing the reaction temperature

Active Publication Date: 2021-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the vulcanization temperature is high and the vulcanization time is long, the reversion is serious, and the reversion rate is as high as 30%, so the practicability is low

Method used

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  • A kind of environment-friendly rubber vulcanization activator and its preparation method and application
  • A kind of environment-friendly rubber vulcanization activator and its preparation method and application
  • A kind of environment-friendly rubber vulcanization activator and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of environment-friendly rubber vulcanization activator, concrete steps are as follows:

[0034] Step 1: Grind 3.4kg fatty acid glycerides, 3.5kg glycerin, 2.03kg zinc oxide evenly and add 0.16kg salicylic acid catalyst into the reactor, set the reaction temperature to 220°C, react for 4 hours, and stir at a rate of 120r / min; During the reaction time, filter while hot, wash 3 times with isopropanol, and dry at 80°C for 10 hours;

[0035] Step 2: Mix 0.66kg isooctanoic acid, 0.69kg lauric acid, 0.35kg myristic acid, 0.45kg palmitic acid, 0.45kg stearic acid and 0.56kg zinc oxide and add them to another reaction kettle. Hydrogen oxide is used as a catalyst, the reaction temperature is set at 135°C, the stirring speed is 300r / min, and the reaction time is 90min. After the reaction is completed, it is cooled and solidified;

[0036] Step 3: After the two products of step 1 and step 2 are pulverized by a pulverizer and mixed evenly, the rubber vu...

Embodiment 2

[0038] A kind of preparation method of environment-friendly rubber vulcanization activator, concrete steps are as follows:

[0039] Step 1: Grind 3.4kg fatty acid glycerides, 2.97kg glycerin, 2.63kg zinc oxide evenly and add 0.14kg salicylic acid catalyst into the reaction kettle, set the reaction temperature to 220°C, react for 4 hours, and stir at a rate of 120r / min; During the reaction time, filter while hot, wash 3 times with isopropanol, and dry at 80°C for 10 hours;

[0040] Step 2: Mix 0.66kg isooctanoic acid, 1.3kg lauric acid, 0.79kg myristic acid, 0.35kg palmitic acid, 0.35kg stearic acid and 0.74kg zinc oxide and add them to another reaction kettle. Hydrogen oxide is used as a catalyst, the reaction temperature is set at 135°C, the stirring speed is 300r / min, and the reaction time is 90min. After the reaction is completed, it is cooled and solidified;

[0041]Step 3: After the two products of step 1 and step 2 are pulverized by a pulverizer and mixed evenly, the ru...

Embodiment 3

[0043] A kind of preparation method of environment-friendly rubber vulcanization activator, concrete steps are as follows:

[0044] Step 1: Grind 3.4kg fatty acid glycerides, 4.1kg pentaerythritol, 1.7kg zinc oxide evenly and add 0.14kg salicylic acid catalyst into the reaction kettle, set the reaction temperature to 220°C, react for 4 hours, and stir at a rate of 120r / min; During the reaction time, filter while hot, wash 3 times with isopropanol, and dry at 80°C for 10 hours;

[0045] Step 2: Mix 0.66kg isooctanoic acid, 0.69kg lauric acid, 0.35kg myristic acid, 0.45kg palmitic acid, 0.45kg stearic acid and 0.56kg zinc oxide and add them to another reaction kettle. Hydrogen oxide is used as a catalyst, the reaction temperature is set at 135°C, the stirring speed is 300r / min, and the reaction time is 90min. After the reaction is completed, it is cooled and solidified;

[0046] Step 3: After the two products of step 1 and step 2 are pulverized by a pulverizer and mixed evenly,...

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Abstract

The invention discloses an environment-friendly rubber vulcanization activator and its preparation method and application. The vulcanization activator is prepared from the following raw materials in parts by mass: C 2 -C 6 1‑6 parts of polyols, C 2 -C 6 Fatty acid polyol ester 1-5 parts, C 8 -C 18 2 to 5 parts of fatty acids, 1 to 4 parts of zinc oxide. The prepared vulcanization active agent is added to the rubber instead of zinc oxide, the cross-linking density and tensile strength of the vulcanized rubber are increased, the Mooney viscosity is reduced, the processability and wear resistance are improved, etc. At the same time, the zinc content is compared with the zinc oxide vulcanization system Reduced by 50% to 62%.

Description

technical field [0001] The invention relates to the field of rubber additives, in particular to an environment-friendly rubber vulcanization active agent and its preparation method and application. Background technique [0002] Zinc oxide has been used as a vulcanization activator since it was discovered in 1923 that it has vulcanization activity. The traditional theory holds that zinc oxide mainly activates the vulcanization system, increases the crosslink density and improves the aging resistance of the vulcanizate. But when zinc oxide is used as a vulcanization activator, only the zinc oxide on the surface can participate in the vulcanization reaction, and the zinc oxide inside the crystal just acts as an "expensive filler", resulting in a huge waste of zinc . Zinc ions are harmful to the environment. When they diffuse into the lake, they will solidify the gill mucus and cause suffocation. In 2003, zinc oxide was included in the list of hazardous substances in EU Regul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L7/00C08K13/02C08K5/053C08K5/103C08K3/22C08K5/09C08J3/24
CPCC08J3/24C08J2307/00C08J2321/00C08K5/053C08K5/09C08K5/103C08K13/02C08K2003/2296
Inventor 杨舜宇陈朝晖
Owner SOUTH CHINA UNIV OF TECH
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