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

A kind of preparation method of bamboo bundle epoxy resin prepreg

A technology of epoxy resin and prepreg, which is applied in the field of preparation of bamboo beam epoxy resin prepreg, can solve the problem of no prepreg semi-finished product processing, etc., and achieve the expansion of application field, low porosity and good surface quality Effect

Active Publication Date: 2020-11-17
ZHEJIANG FORESTRY ACAD +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Affected by the traditional bamboo processing technology, there is no processing of prepreg semi-finished products in the bamboo processing industry

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A kind of preparation method of bamboo bundle epoxy resin prepreg, comprises the steps:

[0062]S1. Resin compounding and film preparation: select epoxy resin (bisphenol A epoxy resin E51), preheat at 95°C for 2 hours, cool down to 80°C, add in sequence: curing agent (dicyandiamide), accelerator (dimethyl urea), the compounding solvent ratio is: 100:8:1.5, scrape the evenly stirred compounding solvent on the release paper to prepare the resin film A. Then continue to add solvent (ethanol), adjust the solvent viscosity to 20000cps, prepare the compound solvent B for solution impregnation, stand-by;

[0063] S2. Preparation of bamboo bundle prepreg blank: Bamboo is rolled and decomposed into sheet-like bamboo bundles with a length of 1220mm, and the resin film A in step (1) is laid in a vacuum impregnation mold with a width of 1220×1220mm, and then parallel Paving bamboo bundles.

[0064] S3. Bamboo bundle prepreg forming: close the mold, heat up, and evacuate until the...

Embodiment 2

[0068] A kind of preparation method of bamboo bundle epoxy resin prepreg, comprises the steps:

[0069] (1) Resin compounding and film preparation: select epoxy resin (bisphenol A type epoxy resin E51+E20 compounding), preheat at 105°C for 2.5h, cool down to 80°C, add in sequence: curing agent (double Cyanamide), accelerator (diethyltetramethylimidazole), compound solvent ratio: 100:7:2, scrape the evenly stirred compound solvent on release paper to prepare resin film A. Then continue to add solvent (acetone), adjust the solvent viscosity to 25000cps, prepare the compound solvent B for solution impregnation, stand-by. Control the compounding process to prevent the compounding solvent from bursting.

[0070] (2) Bamboo bundle prepreg blank preparation: Bamboo material is rolled and decomposed into sheet-like bamboo bundles with a length of 1220mm, and the resin film A in step (1) is paved in a vacuum impregnation mold with a width of 1220×1220mm, and then Lay bamboo bundles i...

Embodiment 3

[0075] A kind of preparation method of bamboo bundle epoxy resin prepreg, comprises the steps:

[0076] (1) Resin compounding and film preparation: select epoxy resin (bisphenol A epoxy resin E51 + bisphenol F epoxy resin F20), preheat at 110°C for 2 hours, cool down to 80°C, and add in order: curing agent (boride), accelerator (diethyltetramethylimidazole), and the compound solvent ratio is: 100:8:1, scrape the evenly stirred compound solvent on the release paper to prepare the resin film A . Then continue to add solvent (ethanol+acetone), adjust the viscosity of the solvent to 40000cps, prepare the compound solvent B for solution immersion, and set it aside. Control the compounding process to prevent the compounding solvent from bursting.

[0077] (2) Bamboo bundle prepreg blank preparation: Bamboo material is rolled and decomposed into sheet-like bamboo bundles with a length of 1220mm, and the resin film A in step (1) is paved in a vacuum impregnation mold with a width of...

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

PropertyMeasurementUnit
lengthaaaaaaaaaa
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a bamboo bundle epoxy prepreg. The preparation method comprises the following steps: transversely paving a bamboo bundle into a blank with the breadth of 1220*1220mm, then placing in a vacuum impregnation mould, injecting resin, heating for pre-curing to obtain a bamboo bundle prepreg with stable quality and good performance. By the preparation method, the utilization value of a bamboo bundle unit is increased and development of a bamboo material to the field of high-performance composite materials is promoted. The bamboo bundle prepreg preparedby the preparation method provided by the invention can better embody various advantages of a prepreg, such as stable resin content, good surface quality, low porosity, easy laminating paving and convenience in implementation of mould pressing manufacturing.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of bamboo bundle epoxy resin prepreg. Background technique [0002] Bamboo bundle is one of the main utilization units of bamboo. It is a kind of loose fiber bundle sheet made by decomposing and rolling bamboo. The width can reach 200mm, and the thickness can reach 2mm at the thinnest. At present, it is commonly used in the manufacture of high-performance bamboo bundle laminated veneer lumber and recombined bamboo and other bamboo bundle boards. However, bamboo, as a natural biomass material, has great variability, resulting in large differences in the performance and shape of the processed bamboo bundles, resulting in large deviations in the performance of bamboo bundle boards. [0003] Prepreg is an intermediate material for manufacturing high-performance composite materials. It is a composition of resin matrix and reinforcement made by impregnating rei...

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): C08J5/24C08L97/02C08L63/00
CPCC08J5/24C08J2397/02C08J2463/00
Inventor 张文福王戈程海涛顾少华庄晓伟于海霞
Owner ZHEJIANG FORESTRY ACAD
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