1. A manufacturing method of a multilayer glass fiber reinforced epoxy composite bushing is characterized in that: the lining comprises an inner layer and an outer layer; two or more than two pre-impregnated cloths are prepared by impregnating two or more than two kinds of fiber woven cloths with resin glue solution of epoxy resin and phenolic resin; the inner-layer prepreg cloth is firstly wound on a tube coiling machine to a specified thickness, and then is sequentially wound on another one or more prepreg cloths to the specified thickness to form an outer layer; and heating and curing after the winding is finished, and processing into the bushing.

2. The method of manufacturing a multilayer glass fiber reinforced epoxy-based composite bushing according to claim 1, wherein: the woven cloth is glass fiber cloth, carbon fiber cloth or aramid fiber cloth.

3. The method of manufacturing a multilayer glass fiber reinforced epoxy-based composite bushing according to claim 1, wherein: the inner layer is formed by winding epoxy resin-based glass fiber prepreg cloth, and the outer layer is formed by winding epoxy resin-based polyester fiber prepreg cloth; the inner layer is an enhancement layer; the outer layer is an elastic layer with flexibility and the elastic modulus of the outer layer is close to that of the casting resin.

Background

Most of the existing fiber reinforced resin-based bushings in the market are made of single materials and can meet the functions of insulation and bolt fastening, but the composite material bushing applied to a resin casting part needs to meet the fastening function and hopefully reduce the stress of the bonding surface of the bushing and resin to the maximum extent, and the composite material bushing does not exist in the market.

Disclosure of Invention

The invention aims to provide a method for manufacturing a multilayer glass fiber reinforced epoxy composite bushing, which can meet the multifunctional requirements of materials in the installation and long-term vibration operation processes.

The technical solution of the invention is as follows:

a manufacturing method of a multilayer glass fiber reinforced epoxy composite bushing is characterized in that: the lining comprises an inner layer and an outer layer; two or more than two pre-impregnated cloths are prepared by impregnating two or more than two kinds of fiber woven cloths with resin glue solution of epoxy resin and phenolic resin; the inner-layer prepreg cloth is firstly wound on a tube coiling machine to a specified thickness, and then is sequentially wound on another one or more prepreg cloths to the specified thickness to form an outer layer; and heating and curing after the winding is finished, and processing into the bushing.

The woven cloth is glass fiber cloth, carbon fiber cloth or aramid fiber cloth.

The inner layer is formed by winding epoxy resin-based glass fiber prepreg cloth, and the outer layer is formed by winding epoxy resin-based polyester fiber prepreg cloth; the inner layer is a reinforced layer which can bear higher load and has a fastening function; the outer layer is an elastic layer, has flexibility, and the elastic modulus of the outer layer is close to that of the casting resin, so that the stress concentration around the fastening is greatly reduced, and the stability of long-term use is improved.

The invention relates to a bushing which is formed by processing a multi-layer structure composite material reel pipe formed by winding and curing two or more fiber reinforced resin matrix composite materials. The matching use of different material layers of the inner layer and the outer layer can meet the multifunctional requirement of the material in the installation and long-term vibration operation process.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic view of a bushing according to an embodiment of the present invention.

Fig. 2 is a schematic view of another form of liner construction.

Detailed Description

A manufacturing method of a multilayer glass fiber reinforced epoxy-based composite bushing comprises an inner layer 1 and an outer layer 2; two or more than two pre-impregnated cloths are prepared by impregnating two or more than two kinds of fiber woven cloths with resin glue solution of epoxy resin and phenolic resin; the inner-layer prepreg cloth is firstly wound on a tube coiling machine to a specified thickness, and then is sequentially wound on another one or more prepreg cloths to the specified thickness to form an outer layer; and heating and curing after the winding is finished, and processing into the bushing.

The woven cloth is glass fiber cloth, carbon fiber cloth or aramid fiber cloth.

Specifically, the method comprises the following steps: the inner layer is formed by winding epoxy resin-based glass fiber prepreg cloth, and the outer layer is formed by winding epoxy resin-based polyester fiber prepreg cloth; the inner layer is a reinforced layer which can bear higher load and has a fastening function; the outer layer is an elastic layer, has flexibility, and the elastic modulus of the outer layer is close to that of the casting resin, so that the stress concentration around the fastening is greatly reduced, and the stability of long-term use is improved.

The product performance data is as follows:

the advantages of the composite bushing of the present invention compared to conventional fiberglass reinforced bushings are shown in the following table:

thus, the excellent technical effects of the present invention can be seen.