Unlock instant, AI-driven research and patent intelligence for your innovation.

Epoxy resin composition for high transparency prepreg and preparation method thereof

A technology of epoxy resin and liquid epoxy resin, which is applied in the field of epoxy resin composition for high-transparency prepregs and its preparation, can solve the problems of difficult treatment of white spots on the surface of reinforced fiber products, and achieve a good appearance effect

Active Publication Date: 2018-09-28
广东博汇新材料科技有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of epoxy resin composition for high transparency prepreg and preparation method thereof, to solve the problem of subsequent hot melt impregnation of existing epoxy resin composition for hot melt prepreg Afterwards, surface white spots appear on reinforced fiber products, which is difficult to deal with

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
  • Epoxy resin composition for high transparency prepreg and preparation method thereof
  • Epoxy resin composition for high transparency prepreg and preparation method thereof
  • Epoxy resin composition for high transparency prepreg and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides an epoxy resin composition for a high-transparency prepreg, which includes the following components in parts by weight:

[0054]

[0055] The preparation method of the epoxy resin composition for the above-mentioned high transparency prepreg comprises the following steps:

[0056] Prepare the above-mentioned components according to parts by weight;

[0057] Preparation of intermediate materials: under the condition of stirring speed of 100-300rpm, according to the ratio of parts by weight of 1:2, Feuron was slowly added to E51 epoxy resin, heated while stirring, and the temperature was controlled to ≤50°C. After adding all Feuron, stir for 30-40 minutes, then use a three-roll machine to grind to a fineness of ≤10 μm, and then stir and disperse for 15-20 minutes after grinding to obtain an intermediate material.

[0058] Preparation of epoxy resin composition for high transparency prepreg:

[0059] First, heat the remaining E51 epoxy resin t...

Embodiment 2

[0064] This embodiment provides an epoxy resin composition for a high-transparency prepreg, which includes the following components in parts by weight:

[0065]

[0066] In this embodiment, EPN is phenol novolac epoxy resin (liquid epoxy resin); ECN is o-cresol novolak epoxy resin (solid epoxy resin).

[0067] The preparation method of the epoxy resin composition for the above-mentioned high transparency prepreg comprises the following steps:

[0068] Prepare the above-mentioned components according to parts by weight;

[0069] Preparation of intermediate materials: under the condition of stirring speed of 100-300rpm, slowly add TDI urea into E51 epoxy resin according to the ratio of parts by weight of 1:2, heat while stirring, and control the temperature ≤ 50°C, wait for TDI After all the urea is added, stir for 30-40 minutes, then use a three-roll machine to grind to a fineness of ≤10 μm, and then stir and disperse for 15-20 minutes after grinding to obtain an intermedia...

Embodiment 3

[0076] This embodiment provides an epoxy resin composition for a high-transparency prepreg, which includes the following components in parts by weight:

[0077]

[0078] The preparation method of the epoxy resin composition for the above-mentioned high transparency prepreg comprises the following steps:

[0079] Prepare the above-mentioned components according to parts by weight;

[0080] Preparation of intermediate materials: under the condition of stirring speed of 100-300rpm, according to the ratio of parts by weight of 1:2, Feuron was slowly added to E51 epoxy resin, heated while stirring, and the temperature was controlled to ≤50°C. After adding all Feuron, stir for 30-40 minutes, then use a three-roll machine to grind to a fineness of ≤10 μm, and then stir and disperse for 15-20 minutes after grinding to obtain an intermediate material.

[0081] Preparation of epoxy resin composition for high transparency prepreg:

[0082] First, heat the remaining E51 epoxy resin t...

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

The invention relates to the technical field of epoxy resin materials, in particular to a high-transparency epoxy resin composition for a prepreg. The high-transparency epoxy resin composition is prepared from the following components in parts by weight: 15 to 30 parts of liquid epoxy resin, 50 to 75 parts of solid epoxy resin, 5 to 15 parts of a flexibilizer, 5 to 12 parts of a liquid latent amine curing agent, 0.5 to 1.5 parts of a promoter and 0.2 to 0.6 part of an additive. The high-transparency epoxy resin composition for the prepreg can ensure that on the premise of high latency, no solid powder exists in the whole epoxy resin composition, so as to ensure that no white spots are produced on the appearance during formation of the prepreg and a composite material product in the later stage.

Description

technical field [0001] The invention relates to the technical field of epoxy resin materials, in particular to an epoxy resin composition for a high-transparency prepreg and a preparation method thereof. Background technique [0002] Epoxy resin prepreg is a composite system composed of epoxy resin, curing system and reinforcing fiber. At present, powdered dicyandiamide is generally used as curing agent in the epoxy resin composition for hot melt prepreg. However, in the epoxy resin composition, since the powdered dicyandiamide is dispersed in the epoxy resin in a solid state, this leads to the subsequent hot-melt impregnation process, due to the part of the ring in the molding process of the reinforced fiber product. Oxygen resin is lost, causing powder dicyandiamide to adhere to the reinforced fiber products, resulting in excessive dicyandiamide and not participating in the reaction. The final performance is that there will be difficult-to-solve surface white spots on the ...

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 Patents(China)
IPC IPC(8): C08L63/00C08L63/04C08L13/00C08L71/02
CPCC08L63/00C08L2201/10C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08L2205/06C08L71/12C08L63/04C08L13/00
Inventor 兰军炎李赟晨
Owner 广东博汇新材料科技有限公司