Reinforcement structure for rubber articles and methods of preparation

一种橡胶制品、结构体的技术，应用在增强材料领域，能够解决降低橡胶粘合等问题

Active Publication Date: 2012-05-30
NGF EURO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(The difference in ionization tendency between Cu and Zn (Zn has a greater ionization tendency than Cu) may form a ZnS layer at the interface between metal and rubber, resulting in reduced adhesion to rubber

Method used

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  • Reinforcement structure for rubber articles and methods of preparation
  • Reinforcement structure for rubber articles and methods of preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 50 parts by weight of tetramethoxysilane, 300 parts by weight of propan-2-ol, 2.5 parts by weight of 1N-nitric acid and 30 parts by weight of purified water were blended and stirred at 50°C for 2 hours, and then the solution was solidified at 30°C for 1 day to obtain a silica sol solution.

[0067] The cleaned steel wire was passed through the silica sol solution at a speed of 30 cm / min to provide a coating of silica sol on the surface of the steel wire. The coated steel wire was then dried at 100°C for 5 minutes, followed by heat treatment at 500°C for 3 hours. This yielded a steel wire coated with silicone gel with a coating thickness of about 250 nm.

Embodiment 2

[0069] 5 parts by weight of zirconium butoxide were added to 1 part by weight of ethyl acetoacetate and stirred at 30° C. for 2 hours (solution A). Meanwhile, 50 parts by weight of tetraethoxysilane, 1000 parts by weight of propan-2-ol, 2.5 parts by weight of 1N-nitric acid, and 50 parts by weight of purified water were blended and stirred at 30° C. for 2 hours (solution B). Then, solution A and solution B were blended and stirred at 50° C. for 3 hours, followed by curing at 30° C. for 1 day to obtain a sol solution.

[0070] The cleaned steel wire was passed through the silica sol solution at a speed of 10 cm / min to produce a coating of silica sol on the surface of the steel wire. The coated steel wire was then dried at ambient temperature (25°C) for 10 minutes, followed by heat treatment at 500°C for 3 hours. This yielded a steel wire coated with a zirconia-zirconia gel with a coating thickness of about 30 nm.

Embodiment 3

[0072] 25 parts by weight of tetraethoxysilane were added to 380 parts by weight of propan-2-ol and 1.6 parts by weight of 1N nitric acid, and stirred at 50°C for 3 hours, then at 30°C for an additional 24 hours.

[0073] 23 parts by weight of a colloidal titanium oxide solution, the content of which is 30% by weight with a diameter of 30-60nm titanium oxide and 70% by weight water. To 10 parts by weight of this solution was subsequently added 57.2 parts by weight of ethanol to produce a sol with a solids concentration of 0.5% by weight.

[0074] The cleaned steel wire was installed vertically in an air atmosphere at 20° C. and 30% RH, and coated with the sol solution by pouring the sol solution from the top of the steel wire (flow coating method). The sol-coated steel wire was then dried at 150° C. for 30 minutes, followed by heat treatment at 500° C. for 3 hours. This yielded steel wires coated with a silica-titania gelcoat with a thickness of about 100 nm.

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Abstract

A reinforcement means for moulded and extruded articles such as tires has a metal structure with a layer of silica gel bonded thereto. The silica gel bonds the reinforcement means to the rubber compound during the moulding / vulcanisation of the rubber compound without the need for a slow curing stage. The silica gel may be applied to the metal structure by a sol-gel process with the gel formed by drying the sol at a temperature up to 150 DEG C. The reinforcement means is preferably a cable formed from steel wires coated with the silica gel. To further improve bonding of the silica gel to the rubber compound, an organosilane bonding agent may be included in the rubber compound or the reinforcing means provided with a second layer comprising an organosilane as a bonding agent. The reinforcement means are particularly useful for strengthening and providing geometric stability to tires.

Description

technical field [0001] The present invention relates to reinforcing structures such as wires or cables for rubber articles such as tyres. In particular, the present invention relates to reinforcement materials that can strongly bond to a rubber matrix with reduced cure or vulcanization cycles. Background technique [0002] In the molded and extruded rubber article industry, certain applications benefit from the inclusion of reinforcing materials typically in the form of fibers, threads, cables, fabrics or textile structures in the rubber base of the molded or extruded rubber article in vivo. This allows for good dimensional control of molded rubber articles so that products can be engineered with anisotropic behavior to enhance performance in the field. An example of this is in the production of rubber tires the introduction of metal cords, usually steel cords, in the rubber matrix of the tire to provide structural strength and geometric stability. [0003] In order for a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C09D1/02
CPCB60C2009/0021B60C1/00D07B2205/3017D07B2201/2012D07B2201/2011D07B1/0666D07B2205/3089D07B2201/2013Y10T428/12597Y10T428/249969Y10T428/265Y10T428/2938Y10T428/296Y10T428/31663D07B2801/18C23C18/122C23C18/1225C23C18/125C23C18/1254
Inventor 井上茜W·斯蒂芬·福尔顿堂下和宏
Owner NGF EURO
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