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Polyacetal resin-nitrile rubber composite

A polyacetal resin and nitrile rubber technology, applied in rubber layered products, epoxy resin coatings, synthetic resin layered products, etc., can solve the problems of peeling, safety hazards, inability to ensure chemical and physical bonding, etc. Achieve the effect of realizing manufacturing steps and realizing safety

Active Publication Date: 2018-07-17
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the primer adhesive used in the past, the chemical and physical bonding strength with the surface of the polyacetal resin molded product that was only sprayed could not be ensured, and peeling occurred between the polyacetal resin and the primer adhesive layer. The problem
[0005] On the other hand, by performing phosphoric acid treatment after spray treatment, the chemical and physical bonding force is improved, and the adhesiveness becomes good. However, phosphoric acid treatment using strong acid is not preferable since it is dangerous in terms of safety during operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] On the surface of a polyacetal resin (BASF company product ULTRA FORM) molded product surface that has been sandblasted, a thickness of 10 μm (weight per unit area: 8 mg / m 2 ) Apply a primer solution having the following composition, dry it at room temperature, and then perform a baking treatment at 120° C. for 10 minutes.

[0040] .

[0041] Next, with a thickness of 15 μm (weight per unit area 14 mg / m 2 ) is applied with a top coat adhesive solution having the following composition, dried at room temperature, and then baked at 80° C. for 5 minutes.

[0042] .

[0043]On the adhesive layer formed in this way, join the nitrile rubber compound (the aforementioned compounding example 1), and perform press vulcanization at 145° C. for 7 minutes to form a nitrile rubber layer and obtain a polyacetal resin. - Nitrile rubber compound.

[0044] When an adhesion test was performed on the obtained polyacetal resin-nitrile rubber composite, the rubber remaining area ratio...

Embodiment 2

[0046] In Example 1, the amount of the colloidal silica solution in the primer adhesive solution was changed to 2.3 parts by weight, and 2.3 parts by weight of titanium oxide and 0.5 parts by weight of zinc oxide were further used. As a result, the rubber obtained by the adhesion test The residual area ratio was 100%.

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PUM

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Abstract

A polyacetal resin-nitrile rubber composite wherein, on a blasted surface of a polyacetal resin molded article, an undercoating adhesive layer formed of an undercoating adhesive, said undercoating adhesive comprising (a) poly(para-vinyl phenol), (b) 2.5-20 parts by weight, per 100 parts by weight of the poly(para-vinyl phenol), of an epoxy resin, (c) 0.2-7 parts by weight, per 100 parts by weightof the epoxy resin, of an imidazole compound and (d) 3-20 parts by weight, per 100 parts by weight of the total content of the poly(para-vinyl phenol) and the epoxy resin, of silica optionally mixed with a metal oxide, a top coating adhesive layer containing a polyolefin-based resin, and a nitrile rubber layer are successively laminated. In this composite, the polyacetal resin having excellent properties is firmly adhered to the nitrile rubber.

Description

technical field [0001] The present invention relates to a polyacetal resin-nitrile rubber compound. In more detail, it relates to a centering bush which is attached to a connecting portion between a propeller shaft and an output shaft of a transmission and is effectively used for functioning as a sliding bearing or a vibration-proof bushing. Acetal resin-nitrile rubber compound. Background technique [0002] Polyacetal resin is excellent in fatigue resistance, and has a good balance of physical properties such as friction resistance, wear resistance, low noise, chemical resistance, creep resistance, and dimensional stability, and is used in various fields. use. However, due to its special chemical structure, it has poor affinity with rubber and the like compared with other engineering plastics, and there is a problem that it is difficult to compound with rubber and the like. [0003] When vulcanizing and bonding polyacetal resin and rubber, the following method is propose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B25/08B32B27/00C09D5/00C09D7/61C09D163/00C09J109/02C09J123/00
CPCB32B25/08B32B27/00B32B27/08C09D5/00C09D163/00C09J109/02C09J123/00
Inventor 冈田卓也佐野慎一朗
Owner NOK CORP
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