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Ultraviolet cured resin coated modified bamboo fiber and preparation method thereof

A technology of curing resin and ultraviolet light, applied in epoxy resin coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of easy water absorption, decreased mechanical properties, accelerated aging of bamboo fibers, and achieves simple processing technology, mechanical The effect of improving performance and reducing water absorption

Active Publication Date: 2016-01-20
浙江华江科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is an improved technical solution aimed at the technical problems of the prior art, solves the technical defects of bamboo fiber such as easy water absorption, moisture absorption and heat release, decline in mechanical properties, accelerated aging, etc., and provides a bamboo fiber with low water absorption and mechanical properties. The compatibility of other resins has also been improved modified bamboo fiber and preparation method thereof, the present invention is realized by the following technical solutions:

Method used

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  • Ultraviolet cured resin coated modified bamboo fiber and preparation method thereof
  • Ultraviolet cured resin coated modified bamboo fiber and preparation method thereof
  • Ultraviolet cured resin coated modified bamboo fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The modified bamboo fiber contains 100g of bamboo fiber and 10g of ultraviolet curable resin.

[0029] Get 100g of bamboo fiber after washing treatment, get 375g of epoxy acrylate, 125g of 2-methacrylic acid isocyanate, 6.25g of 1-hydroxycyclohexyl acetophenone, 0.63g of polymerization inhibitor hydroxyanisole, mix uniformly and configure to obtain ultraviolet light-curing composition. Put 100g of bamboo fiber into a metal mesh bag and completely immerse it in the UV-curable composition. After dipping for 5 minutes, pull the mesh bag, place it in a centrifuge and shake it at a speed of 2000r / min for 1 minute, and spread it loosely on the poly The tetrafluoroethylene plate is sent to a UV curing device for irradiating for 1 minute. After the surface resin layer is cured, the bamboo fiber coated with the UV curing resin is obtained, which is designated as bamboo fiber 1.

Embodiment 2

[0031] The modified bamboo fiber contains 100g of bamboo fiber and 7g of ultraviolet curable resin.

[0032] Take 100g of bamboo fiber after washing and cutting, take 1000g of polyurethane acrylate, 400g of isodecyl acrylate, 14g of α-hydroxy ketone, and 3.4g of polymerization inhibitor hydroxyethyl methacrylate, and mix them evenly to obtain ultraviolet light Curing composition. Put 100g bamboo fiber into a metal mesh bag and completely immerse it in the UV-curable composition, pull the mesh bag after dipping for 5 minutes, and place it in a centrifuge and shake it for 3 minutes at a speed of 1000r / min, then spread it loosely on the poly The tetrafluoroethylene plate is sent to the ultraviolet light curing device for irradiation for 5 minutes. After the surface resin layer is cured, the bamboo fiber coated with the ultraviolet light curing resin is obtained, which is recorded as bamboo fiber 2.

Embodiment 3

[0034] The modified bamboo fiber contains 100g of bamboo fiber and 19g of ultraviolet curable resin.

[0035] Take 100g of bamboo fiber after washing and cutting, take 7500g of alicyclic epoxy resin, 2816g of isodecyl acrylate, 94g of α-hydroxy ketone, 28g of polymerization inhibitor hydroxyanisole, and mix them evenly to obtain ultraviolet light Curing composition. Put 100g of bamboo fiber into a metal mesh bag and completely immerse it in the UV-curable composition. After soaking for 10 minutes, pull the mesh bag, place it in a centrifuge and shake it at a speed of 100r / min for 10 minutes, and spread it loosely on the poly The tetrafluoroethylene plate is sent to a UV curing device for 10 minutes of irradiation. After the surface resin layer is cured, the bamboo fiber coated with the UV curing resin is obtained, which is designated as bamboo fiber 3.

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Abstract

The invention discloses ultraviolet cured resin coated modified bamboo fiber and a preparation method thereof. The modified bamboo fiber is ultraviolet cured resin coated modified bamboo fiber which comprises the following components in parts by mass: 100 parts of bamboo fiber and 5-20 parts of an ultraviolet curing composition. The preparation method comprises the following steps: cutting, steeping and performing ultraviolet curing. According to the technical scheme, the surface of the ultraviolet cured resin coated modified bamboo fiber can be completely coated by resin, so that the difficulty that the application range is affected as water and moisture can be easily absorbed into the bamboo fiber is solved. The ultraviolet curing composition for coating the bamboo fiber is good in flowability, can sufficiently infiltrate grooves of bamboo fiber and form a layer of complete protecting film on the surface of the bamboo fiber. Therefore, contact of the resin coated bamboo fiber with moisture in air is reduced, the water absorption property is greatly degraded, and meanwhile other mechanical properties are also greatly improved.

Description

technical field [0001] The invention relates to the field of bamboo fiber modification, in particular to a modified bamboo fiber coated with an ultraviolet light curing resin and a preparation method thereof. The method is especially suitable for reducing the water absorption and improving the mechanical properties of the bamboo fiber. Background technique [0002] As the environment continues to deteriorate, people continue to pay attention to the development of global recyclable materials. Since the 1960s, researchers in Taiwan, China produced the first batch of natural bamboo fibers by mechanical methods. Bamboo fibers have always been highly praised by people. One of the natural fibers. Bamboo fiber has the advantages of high strength (similar to the mechanical properties of ramie), light weight, resistance to ultraviolet radiation, anti-mold, short renewable cycle, etc., and my country's bamboo output is the first in the world, and the price is low. Today, bamboo fiber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D175/14C09D4/02C09D4/06C09D7/12C08L97/02
Inventor 王萍静方晶蔡伟炜傅华康马国维
Owner 浙江华江科技股份有限公司
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