Rubber-metal bonding enhancer for steel wire radial tyre and preparation method thereof

A radial tire and metal bonding technology, which is applied in the field of rubber additives, can solve the problems of affecting the physical and chemical properties and use performance of products, insufficient reactivity of weak organic acids, and affecting the bonding performance of products, so as to solve the problem of unstable synthesis reaction , Solve the loss of acid water solubility, the effect of normal and stable structure

Inactive Publication Date: 2010-11-03
杭州新速工业助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] ① Formulation problem: Cobalt is a scarce resource and is expensive. The existing technology uses 100% cobalt inorganic salts to produce, and the cost of inorganic cobalt salts accounts for 70% of the material cost of a ton of boroacylated cobalt products, and the product cost is very high;
[0017] ②Problems in the production of basic cobalt carbonate: the dispersion of lye is not enough, the concentration of lye is high, and the concentration of metal ions is also high at this time. The added lye reacts sharply with metal inorganic salts, and it is easy to genera

Method used

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  • Rubber-metal bonding enhancer for steel wire radial tyre and preparation method thereof
  • Rubber-metal bonding enhancer for steel wire radial tyre and preparation method thereof
  • Rubber-metal bonding enhancer for steel wire radial tyre and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0076] Example 1

[0077] According to the proportioning preparation under the item of embodiment 1 in table 1, the low-cobalt boroacylated metal compound salt is prepared as follows:

[0078] (1) Production of basic metal carbonate compound salt by temperature gradient method and concentration step method

[0079] A. Dissolve sodium carbonate at 80°C into solutions with concentrations of 15%, 25%, and 35%, respectively.

[0080] Put into the different storage tanks of heat preservation for standby, the temperature of sodium carbonate solution is kept between 60-80 ℃ in the reaction process;

[0081] B. Dissolve cobalt sulfate, nickel sulfate, copper sulfate and zinc sulfate in water into a solution with a concentration of 35%, place it in a reaction kettle, heat up at a rate of 5°C / h under continuous stirring, and start adding at 55°C The pump atomizes the sodium carbonate solution with a concentration of 25%, and gradually raises the temperature to 70°C at a rate of 5°C / ...

Example Embodiment

[0087] Example 2

[0088] Prepare raw materials according to the proportioning under embodiment 2 in table 1, metal adopts sulfate, low cobalt boroacylated metal compound salt

[0089] Prepare as follows:

[0090] (1) Production of basic metal carbonate compound salt by temperature gradient method and concentration step method

[0091] A. Dissolve sodium carbonate at 75°C into solutions with concentrations of 15%, 25%, and 35%, respectively.

[0092] Put into the different storage tanks of heat preservation for standby, the temperature of sodium carbonate solution is kept between 60-80 ℃ in the reaction process;

[0093] B. Dissolve cobalt sulfate, nickel sulfate, copper sulfate and zinc sulfate in water into a solution with a concentration of 25%. The pump atomizes the sodium carbonate solution with a concentration of 25%, and gradually raises the temperature to 70°C at a rate of 5°C / h, and controls the pH to 7.0. When the pH value reaches 7.0, add a 35% sodium carbonat...

Example Embodiment

[0099] Example 3

[0100] According to the proportioning preparation under embodiment 3 item in table 1, metal adopts chloride salt, low cobalt boroacylated metal compound salt

[0101] The preparation method is the same as in Example 1.

[0102] The physical and chemical index test results of the product obtained in this embodiment are shown in Table 2, the use index test results are shown in Table 3, and the cost analysis is shown in Table 4.

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Abstract

The invention belongs to the field of rubber chemicals and discloses a rubber-metal bonding enhancer for a steel wire radial tyre. The enhancer is prepared from four kinds of metal salts of cobalt, nickel, copper and zinc; and the proportion of the metal salts by metal molar mass: cobalt: nickel: copper: zinc is (50% to 70%): (20% to 40%): (6% to 10%): (2% to 4%). The preparation method of the bonding enhancer comprises the steps of: using the four kinds of metal salts as starting materials to sequentially prepare alkali carbonate metal composite salt by a temperature gradient method and a concentration step method, prepare an intermediate by a continuous dehydration method and prepare low cobalt boroacylate metal composite salt by a boroacylate replacement reaction to obtain the bonding enhancer. In the invention, the proportion of the cobalt is regulated to 50% to 70% from 100% in a traditional technology; and the consumption of precious metal cobalt is reduced; the cost is reduced by 10% to 20%. The physical and chemical indexes and utilization property of the product of the invention are equivalent to those of a boroacylate cobalt product; and the drawing force and retention rate of an aged product are better than those of the boroacylate cobalt product.

Description

technical field [0001] The invention belongs to the field of rubber additives, in particular to a rubber-metal adhesion enhancer for steel wire radial tires with low cobalt content. Background technique [0002] In the process of producing steel wire radial tires, the rubber in contact with the steel wire ring belt and the steel wire belt needs to be added with a cobalt salt binder during the rubber mixing process to improve the adhesion between the steel wire and the rubber and maintain a continuous Adhesive effect to reduce the possibility of tire blowout under load and high-speed operation, and improve the safety, performance and life of steel radial tires. [0003] The prescription and production method of existing cobalt salt binder are: [0004] ① Metal ratio: 100% cobalt metal (in the form of cobalt sulfate or cobalt chloride); [0005] ②Basic cobalt carbonate production: Dissolve cobalt sulfate or cobalt chloride to a 30% concentration solution in the reaction kett...

Claims

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Application Information

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IPC IPC(8): C08K5/55C08K5/01C08L21/00C01G53/06C07C51/41C07C53/128C07C61/29C07F19/00
Inventor 曹进海郎群卫
Owner 杭州新速工业助剂有限公司
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