阅读说明：本技术 一种车辆用补强胶片及其制备方法 (Reinforcing rubber sheet for vehicle and preparation method thereof ) 是由 刘训海 于 2020-03-28 设计创作，主要内容包括：本发明公开了一种汽车用钢板补强胶片及其制备方法,包括天然橡胶、丁腈橡胶、环氧树脂、增塑剂、磁性物质、松焦油、玻璃纤维、云母粉、增粘橡胶、固化剂；本发明首先对天然橡胶、丁腈橡胶进行塑炼,而后向塑炼后的天然橡胶、丁腈橡胶中加环氧树脂、增塑剂、磁性物质、松焦油、玻璃纤维、云母粉、增粘橡胶、固化剂进行混炼,提高了补强胶片粘附性能,同时极大提升了补强胶片在粘附钢板时的易操作。(The invention discloses an automobile steel plate reinforcing film and a preparation method thereof, wherein the automobile steel plate reinforcing film comprises natural rubber, nitrile rubber, epoxy resin, a plasticizer, a magnetic substance, pine tar, glass fiber, mica powder, tackifying rubber and a curing agent; according to the invention, the natural rubber and the nitrile rubber are firstly plasticated, and then the epoxy resin, the plasticizer, the magnetic substance, the pine tar, the glass fiber, the mica powder, the tackifying rubber and the curing agent are added into the plasticated natural rubber and nitrile rubber for mixing, so that the adhesion performance of the reinforcing rubber sheet is improved, and the easy operation of the reinforcing rubber sheet in adhering a steel plate is greatly improved.)

1. The steel plate reinforcing film for the automobile is characterized by comprising the following components in parts by weight: 30-40 parts of natural rubber, 25-30 parts of nitrile rubber, 20-30 parts of epoxy resin, 5-8 parts of plasticizer, 10-20 parts of magnetic substance, 10-15 parts of pine tar, 8-10 parts of glass fiber, 5-8 parts of mica powder, 3-5 parts of tackifying rubber and 2-3 parts of curing agent.

2. The steel plate reinforcing film for the automobile as claimed in claim 1, wherein the epoxy resin is bisphenol F type epoxy resin and chlorinated bisphenol A type epoxy resin at a weight ratio of 1:1, and the epoxy equivalent of the epoxy resin is 250-300 g/eq.

3. The steel plate reinforcing rubber sheet for the automobile as claimed in claim 1, wherein the acrylonitrile butadiene rubber acrylonitrile-butadiene rubber contains 20-25% of acrylonitrile-butadiene rubber, and the acrylonitrile butadiene rubber gel contains 12-15%.

4. The steel plate reinforced rubber sheet for the automobile of claim 1, wherein the tackifying rubber is polyisobutylene and polybutadiene rubber oil ammonium in a medium weight ratio of 3: 2.5 proportion.

5. The steel plate reinforced film for the automobile of claim 1, wherein the mica powder is conductive mica powder, and the particle size of the mica powder is 8-10 meshes.

6. The steel sheet reinforced film for an automobile of claim 1, wherein the magnetic material is one of a nickel-zinc-iron oxide and a magnesium-manganese-iron oxide.

7. The steel plate reinforced film for automobile of claim 1, wherein the glass fiber is fluorine-free glass fiber.

8. The method for preparing a steel plate reinforcing sheet for automobiles according to any one of claims 1 to 7, comprising the steps of:

plasticating: plasticating natural rubber and nitrile rubber by an open mill at the temperature of 65 ℃;

step two, mixing: cooling the open mill to 55 ℃, adding epoxy resin, plasticizer, magnetic substance, pine tar, glass fiber, mica powder, tackifying rubber and curing agent into the plasticized natural rubber and nitrile rubber after the first step of plasticizing, and mixing;

step three, extruding and cutting: extruding the materials mixed in the step two by an extruder at 30-35 ℃ to form a mixed rubber sheet, attaching the upper surface and the lower surface of the mixed rubber sheet to release paper in the extrusion process, and then conveying the mixed rubber sheet to a cutting machine to cut the mixed rubber sheet into pieces.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a reinforcing rubber sheet for a vehicle and a preparation method thereof.

Background

In the field of automobile manufacturing, the light weight of vehicles is a great trend, and according to the fact that the measured automobile quality is in direct proportion to the friendly quality, the oil consumption can be reduced to a great extent by reducing the automobile body quality. And the reduction of the mass can also increase the effective loading capacity of the vehicle, effectively shorten the braking distance and improve the acceleration capacity, and simultaneously can also reduce the potential energy in collision, so that the reduction of the mass of the vehicle body has an important effect. At present, the quality of the automobile body is reduced by reducing the thickness of the steel plate of the automobile body, and meanwhile, in order to ensure the mechanical strength of the automobile body, a method of adhering a reinforcing film to the steel plate at the weak link of the automobile body is adopted to enhance the strength of the automobile body.

Disclosure of Invention

The present invention is directed to a reinforced film for vehicles and a method for preparing the same, which solves the above-mentioned problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the steel plate reinforcing film for the automobile is characterized by comprising the following components in parts by weight: 30-40 parts of natural rubber, 25-30 parts of nitrile rubber, 20-30 parts of epoxy resin, 5-8 parts of plasticizer, 10-20 parts of magnetic substance, 10-15 parts of pine tar, 8-10 parts of glass fiber, 5-8 parts of mica powder, 3-5 parts of tackifying rubber and 2-3 parts of curing agent.

The epoxy resin is bisphenol F type epoxy resin and chlorinated bisphenol A type epoxy resin in a weight ratio of 1:1, and the epoxy equivalent of the epoxy resin is 250-300 g/equivalent.

The acrylonitrile butadiene rubber contains 20-25% of acrylonitrile and 12-15% of nitrile butadiene rubber gel.

The tackifying rubber is prepared from polyisobutylene and polybutadiene rubber oil ammonium according to the weight ratio of 3: 2.5 proportion.

The mica powder is conductive mica powder, and the particle size of the mica powder is 8-10 meshes.

The magnetic substance is one of nickel-zinc-iron oxide and magnesium-manganese-iron oxide.

The glass fiber is fluorine-free glass fiber.

The preparation method of the steel plate reinforcing rubber sheet for the automobile is characterized by comprising the following steps of:

plasticating: plasticating natural rubber and nitrile rubber by an open mill at the temperature of 65 ℃;

step two, mixing: cooling the open mill to 55 ℃, adding epoxy resin, plasticizer, magnetic substance, pine tar, glass fiber, mica powder, tackifying rubber and curing agent into the plasticized natural rubber and nitrile rubber after the first step of plasticizing, and mixing;

step three, extruding and cutting: extruding the materials mixed in the step two by an extruder at 30-35 ℃ to form a mixed rubber sheet, attaching the upper surface and the lower surface of the mixed rubber sheet to release paper in the extrusion process, and then conveying the mixed rubber sheet to a cutting machine to cut the mixed rubber sheet into pieces.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the natural rubber and the nitrile rubber are firstly plasticated, and then the epoxy resin, the plasticizer, the magnetic substance, the pine tar, the glass fiber, the mica powder, the tackifying rubber and the curing agent are added into the plasticated natural rubber and nitrile rubber for mixing, so that the adhesion performance of the reinforcing rubber sheet is improved, and the operability of the reinforcing rubber sheet in adhering a steel plate is greatly improved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: