CN102041753A - Preparation method of double-faced epoxy-fiber glass cloth phenolic paper laminated board - Google Patents

Abstract

The invention relates to a preparation method of a double-faced epoxy-fiber glass cloth phenolic paper laminated board which is suitable for an insulated structure part in a low-voltage electro mechanical device requiring higher mechanical property, and can be used in a transformer. The method comprises the following processing steps: step one, soaking 5-550 layers of insulated impregnated paper with phenolic resin, drying and carrying out hot pressing to obtain a laminated pressed product; and step two, compounding with epoxy glass fiber cloth on two faces of the prepared laminated product through hot pressing, thereby preparing a double-faced epoxy-fiber glass cloth phenolic paper laminated board. The laminated board has high mechanical and dielectric properties, preferable high temperature resistance and insulativity, and good voltage resistance and processability.

Description

The preparation method of two-sided epoxy glass fiber cloth ratio phenolic paper laminate

(1) technical field

The present invention relates to a kind of preparation method of two-sided epoxy glass fiber cloth ratio phenolic paper laminate.Described laminated board is applicable in the low voltage motor electric equipment that mechanical performance is had relatively high expectations makes the insulation system parts, and can use in transformer.Belong to the insulating materials technical field.

(2) background technology

Before the present invention makes, be applicable in the past that the material of making the insulation system parts in the low voltage motor electric equipment was to make certain thickness single-layer insulation material by plank or bamboo let.Its shortcoming is that resistance to elevated temperatures and insulating properties are relatively poor.

(3) summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, the preparation method of the two-sided preferably epoxy glass fiber cloth of a kind of resistance to elevated temperatures and insulating properties ratio phenolic paper laminate is provided.

The object of the present invention is achieved like this: a kind of preparation method of two-sided epoxy glass fiber cloth ratio phenolic paper laminate, and described method comprises following processing step:

Step 1,5～550 layers of impregnated paper are soaked with the phenolic resins drying be hot pressed into laminated product;

Step 2, on two equal hot pressing of the laminated product that step 1 is made are compound epoxy glass fiber cloth, thereby make epoxy glass fiber cloth ratio phenolic paper laminate.

The invention has the beneficial effects as follows:

1, the present invention has high machinery and dielectric properties, and resistance to elevated temperatures and insulating properties are better.

2, epoxy glass fiber cloth on two of described laminated product are compound can improve the proof voltage ability of laminated board like this, can also improve the processing characteristics of laminated board simultaneously.

(4) description of drawings

Fig. 1 is the epoxy glass fiber cloth ratio phenolic paper laminate section structure schematic diagram of the inventive method preparation.

Among the figure: impregnated paper 1, phenolic resins 2, epoxy glass fiber cloth 3.

(5) specific embodiment

Referring to Fig. 1, Fig. 1 is the epoxy glass fiber cloth ratio phenolic paper laminate section structure schematic diagram of the inventive method preparation.As seen from Figure 1, the preparation method of the two-sided epoxy glass fiber cloth of the present invention ratio phenolic paper laminate, described method comprises following processing step:

Step 1,5～550 layers of impregnated paper 1 are soaked with phenolic resins 2 dryings be hot pressed into laminated product;

Step 2, on two hot pressing of the laminated product that step 1 is made are compound epoxy glass fiber cloth 3, thereby make two-sided epoxy glass fiber cloth ratio phenolic paper laminate.

Claims (1)

1. the preparation method of a two-sided epoxy glass fiber cloth ratio phenolic paper laminate is characterized in that described method comprises following processing step:

Step 1,5～550 layers of impregnated paper are soaked with the phenolic resins drying be hot pressed into laminated product;

Step 2, on two equal hot pressing of the laminated product that step 1 is made are compound epoxy glass fiber cloth, thereby make two-sided epoxy glass fiber cloth ratio phenolic paper laminate.

Images