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Expanded felt material containing accelerant, and preparation method thereof

A technology of accelerator and epoxy adhesive, applied in the field of expanded felt materials, can solve the problems of irritating odor, health risks, environmental pollution and human body, etc., and achieve the effect of stable performance

Active Publication Date: 2020-02-21
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the current expanded felt material containing zinc naphthenate accelerator has a pungent smell, pollutes the environment and has health risks to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the present invention more obvious and understandable, the preferred embodiments are described in detail as follows;

[0022] Embodiment provides a kind of expansive mat material containing accelerator, comprises non-alkali glass fiber, epoxy resin, accelerator and non-woven fabric; The mass fraction of non-alkali glass fiber is 66.6%; Epoxy resin is bisphenol A type epoxy resin , the mass fraction is 26.8%; the accelerator is synthetic zinc neodecanoate, the mass fraction is 4.1%; the non-woven fabric is polyester non-woven fabric, the mass fraction is 2.5%. The expansion capacity of the expansion felt material is ≥450%. The expansion capacity is the ratio of the volume after free expansion for 2 hours to the original volume at a test temperature of 65°C. E-glass filaments are long glass fibers, and the fiber length can be between 20-50mm. The use of long glass fibers is beneficial to the improvement of expansion capacity due to its better resilience....

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Abstract

The invention provides an expanded felt material containing an accelerant. The material comprises, by mass, 65-75% of alkali-free glass fibers, 20-30% of epoxy resin, 2-7% of a zinc neodecanoate accelerant and 1-4% of a polyester nonwoven fabric. The zinc neodecanoate is adopted as the accelerant, so that the expanded felt material has the advantages of stable performances, safety and environmental friendliness.

Description

technical field [0001] The invention relates to an expansive felt material containing an accelerator, which belongs to the technical field of electrical insulating materials. Background technique [0002] Accelerator-containing expansion mat is a kind of glass mat made of disorderly and anisotropic non-alkali glass random filaments rolled, which is pre-impregnated with epoxy anhydride resin and accelerator, and then made by hot pressing process. It is in the shape of a plate under normal conditions and has a certain degree of rigidity, but the structure is relatively loose, and the layers are easy to peel off. It is mainly used for fixing between the coil at the end of the winding of the rotating electrical machine and the spacer, and between the spacer and the coil under the wedge in the slot, etc. When the expansion felt is used together with epoxy-anhydride resin, the expansion felt is impregnated with resin, and under the action of the accelerator, the expansion felt ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B17/02B32B17/12D06M17/04C09J163/00C09J11/06
CPCB32B5/02B32B5/022B32B5/26D06M17/04C09J163/00C09J11/06B32B2262/101C08K5/098
Inventor 郑刚王庭山余双敏金雯静李强
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD