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Water-based first coating for tire bead steel wire plating aftertreatment

A bead wire and substrate technology, applied in coating, liquid chemical plating, metal material coating process and other directions, can solve the problem of shortening tire service life, affecting tire performance, and weak adhesion between bead wire substrate and rubber and other problems, to achieve the effect of enhancing the bonding strength and increasing the adhesion rate

Active Publication Date: 2015-04-08
JIANGSU XINGDA STEEL TYPE CORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Organic coatings can not only prevent rust and prolong the storage time of steel wires, but this organic coating often contains some tackifying resins, which can also react with rubber on the surface of bead wires, but such tackifying resins can also react with rubber on the surface of bead wires. The resin cannot be stably combined with the inorganic steel wire matrix or the coating on the surface of the steel wire. Therefore, the adhesion between the bead wire matrix and the rubber is often weak and the adhesion effect is unstable, which affects the tire performance and shortens the service life of the tire.

Method used

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  • Water-based first coating for tire bead steel wire plating aftertreatment

Examples

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Effect test

Embodiment 1

[0013] Example 1: A water base coating solution for post-plating treatment of bead wires, consisting of 0.7% N-β (aminoethyl)-γ-aminopropylmethyldimethoxysilane, 0.1 % bis(triethoxysilylpropyl) tetrasulfide, 0.16% bis(triethoxysilylpropyl) disulfide, 0.04% 3-thiooctanoyl-1-propyl trisulfide Composed of ethoxysilane, 60% methanol, 30% ethanol, and the rest of water, use a 6cm cotton thread soaked in the above water-based coating solution, apply it on the surface of a 0.95mm tinned bronze bead wire, and one end of the silane coupling agent The hydrolyzed group undergoes hydrolysis and reacts with the steel wire matrix to combine, and the organic group at the other end can react with the organic components in the post-treatment process to effectively connect the inorganic metal and the organic resin; compared with the single-coated organic coating liquid, First apply the water-based coating solution and then apply the organic coating solution, the adhesion between the steel wire ...

Embodiment 2

[0014] Example 2: A water-based coating solution for post-plating treatment of bead wires, consisting of 0.8% N-β (aminoethyl)-γ-aminopropylmethyldimethoxysilane, 0.15 % of bis(triethoxysilylpropyl) disulfide, 0.1% of 3-thiooctanoyl-1-propyltriethoxysilane, 60% of methanol, 25% of ethanol, and the balance of water Composition: use 8cm cotton thread soaked in the above water-based coating solution, and apply it on the surface of 1.20mm tinned bronze bead wire. The group can react with the organic components in the post-treatment process, effectively connecting the inorganic metal and the organic resin; compared with the single-coating organic coating solution, the water base coating solution is first coated and then the organic coating solution, and the steel wire and the organic coating solution The adhesion between rubber and the adhesive rate after bonding are significantly improved. After this treatment, the adhesive force between the steel wire and rubber is greater than 1...

Embodiment 3

[0015] Embodiment three: see figure 1 Shown, a kind of post-plating coating treatment method of bead steel wire comprises the steps:

[0016] ① Select a high-strength plated bead wire with a tin bronze coating weight of 0.39-0.58g / kg, a tin content of 4-10%, and a diameter of 1.30mm;

[0017] ② Rinse with cold water to remove the impurity ions remaining on the surface of the steel wire in the previous process, and dry the steel wire in an oven at 160°C;

[0018] ③ Smear the steel wire obtained in step ② with a 5cm cotton thread and apply the water base coating solution for the post-plating treatment of bead steel wires according to the present invention. The water base coating solution contains N-β (aminoethyl)-γ-ammonia with a mass fraction of 0.6%. Propylmethyldimethoxysilane, 0.05% bis(triethoxysilylpropyl) tetrasulfide, 0.15% 3-thiooctanoyl-1-propyltriethoxysilane, 60% Methanol, 28% ethanol, the balance is water, and then dried by cold air;

[0019] 4. smear organic coa...

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Abstract

The invention discloses a water-based first coating for tire bead steel wire plating aftertreatment. The water-based first coating is prepared from at least one of N-beta (aminoethyl)-gamma-diethylaminopropyl-methyldimethoxysilane (triethoxyl silicon propyl) tetrasulfide, bi(triethoxyl silicon propyl) disulfide and 3-sulfo-octanoic acid-1-propyl triethoxyl silane, as methanol, ethanol and water. Hydrolysis groups at one end of the molecular chain of the silane coupling agent in the water-based first coating are subjected to hydrolysis and react with a steel wire substrate so as to be combined together, and organic groups at the other end of the molecular chain can react with organic components in an aftertreatment process, so that inorganic metal and organic resin are effectively connected; when the water-based first coating is applied to tire bead steel wire plating aftertreatment, the adhesive force of a tire bead steel wire and rubber can be effectively improved, the adhesive adhesion rate of the surface of the adhered steel wire is increased, and the preservation time of the steel wire is prolonged.

Description

technical field [0001] The present invention relates to a water base coating solution for the post-plating treatment of bead steel wires, in particular to a water-based coating solution capable of coupling with inorganic metal steel wires and organic resins at the same time, thereby improving the adhesion between bead steel wires and rubber Water base coat. Background technique [0002] In recent years, the automobile industry has developed rapidly. As an important part of automobiles, radial tires have been rapidly applied and developed due to their advantages of energy saving, high speed and light weight. As one of the frame materials of radial tires, the quality of the bead wire will directly affect the overall performance of the tire. Bead wires are subject to extremely complex alternating loads and impact loads in tires. Not only are they required to have high strength, good fatigue resistance, and high impact resistance, they also need to be compatible with them durin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C23C18/48
Inventor 倪自飞董小帅何广仁姚利丽石荣珠
Owner JIANGSU XINGDA STEEL TYPE CORD
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