Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of light fireproof composite material

A composite material, lightweight technology, used in chemical instruments and methods, flat products, synthetic resin layered products, etc., can solve the problems of large smoke generation, limited application, not environmental protection, etc., achieve high structural strength, excellent fire resistance The effect of flame retardant properties

Pending Publication Date: 2021-02-05
广东航科新材料有限公司 +1
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of epoxy resin-based composite materials are high mechanical strength, environmental protection and low VOC release. However, due to the problems of large smoke generation and high heat release of epoxy resin itself, it affects the improvement of the fire performance level of its composite materials. , limiting the application of epoxy resin-based composites in the field of rail transit
Although the phenolic resin-based composite material is inherently flame-retardant and has a high fire rating, there are problems such as large release of free aldehyde and low molecular weight, not environmentally friendly, and poor toughness.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of light fireproof composite material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] This scheme also provides a preparation method of lightweight fireproof composite material, the operation steps include:

[0018] (1) Material equipment: prepare the mold to be used, and prepare the resin glue;

[0019] (2) Molding preparation: brush the phenolic resin mixture containing the curing agent on the mold, and then lay a layer of fiber fabric cut according to the requirements on it, and squeeze the fabric with a brush, press or scraper to make it evenly impregnated. After gluing and removing air bubbles, paint the epoxy resin mixture, spread the second layer of fiber fabric and flame retardant, make it evenly dipped in glue and remove air bubbles, then paint the phenolic resin mixture containing the curing agent, and then coat it Lay a layer of fiber fabric that has been cut according to the requirements, so that it can be evenly dipped in glue and remove air bubbles;

[0020] (3) Curing: under a certain pressure, heat and cure the above-mentioned lay-up str...

Embodiment 1

[0026] Example 1: High-strength fireproof composite material board (2mm thickness), its layer structure: 1 layer of 400g / ㎡weight phenolic prepreg (formula composition is the same as Comparative Example 3) + 7 layers of epoxy prepreg (formula composition : 60wt% glass fiber, 5wt% flame retardant (a combination of aluminum hydroxide and ammonium polyphosphate), 35wt% epoxy resin.)+1 layer of 400g / ㎡ weight phenolic prepreg (formulation is the same as Comparative Example 3), After lamination, hot pressing and compounding are prepared to obtain a composite material sheet.

Embodiment 2

[0027] Example two: high-strength fireproof composite material board (2mm thickness), its layer structure: 1 layer of phenolic prepreg with a weight of 400g / ㎡ (formula composition is the same as Comparative Example 3) + 7 layers of epoxy prepreg (formula composition Same as Comparative Example 1) + 1 layer of phenolic prepreg with a weight of 400g / ㎡ (the formula composition is the same as Comparative Example 3), after laying up layers, heat-compress and compound to prepare a composite material board.

[0028]

[0029] From the above Comparative Examples 1-5 and Examples 1 and 2, it can be seen that compared with Comparative Example 1, the fire performance of the composite material has been significantly improved after the surface layer is designed as a phenolic resin system, while maintaining the original There is the excellent mechanical strength of epoxy composite material; Example 2 is compared with comparative example 4,5, shows that only when the phenolic / epoxy composit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a preparation method of a light fireproof composite material. A laying layer structure and a light prepreg are included, the laying layer structure is formed by combining a surface layer and a center layer, the laying layer structure is arranged to be of an up-and-down structure, the surface layer is made of phenolic aldehyde prepreg, the center layer is made of epoxy prepreg, and thelaying layer structure and the light prepreg are compounded into a sheet plate through hot pressing; the surface layer is of an up-and-down two-layer structure, and the center layer is arranged in themiddle of the surface layer; the main components of the phenolic prepreg are phenolic resin and fibers; and the main components of the epoxy prepreg are epoxy resin, fibers and a flame retardant. A plate is formed by hot-pressing compounding of the laying layer structure, and the composite material has excellent fireproof and flame-retardant properties of a phenolic aldehyde composite material and high structural strength, environmental protection and low VOC properties of an epoxy composite material at the same time, and meets the requirements of various application scenes in the field of rail transit.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of lightweight fireproof composite materials. Background technique [0002] At present, the thermosetting composite materials used for interior parts in the field of rail transit are mainly epoxy resin-based composite materials and phenolic resin-based composite materials. The advantages of epoxy resin-based composite materials are high mechanical strength, environmental protection and low VOC release. However, due to the problems of large smoke generation and high heat release of epoxy resin itself, it affects the improvement of the fire performance level of its composite materials. , limiting the application of epoxy resin-based composites in the field of rail transit. However, although the phenolic resin-based composite material is essentially flame-retardant and has a high fire rating, there are problems such as large release of free aldehyde...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B5/26B32B5/02B32B33/00B29C70/34B29C70/54B29L7/00
CPCB32B5/26B32B5/02B32B33/00B29C70/345B29C70/54B29L2007/002B32B2307/3065B32B2307/50B32B2260/023B32B2260/046B32B2250/02
Inventor 杨克俭杨金杨淦锋宋庭柏陈旭东
Owner 广东航科新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com