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Reactive compatibilized bamboo fiber/polylactic acid composite material and preparation method thereof

A technology of reactive compatibilization and composite materials, applied in the field of fiber reinforced resin composite materials, can solve the problems of high energy consumption and increased material preparation cost, and achieve the effect of excellent tensile strength

Active Publication Date: 2019-03-15
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, physical methods such as plasma and microwave treatment consume a lot of energy and increase the cost of material preparation, while chemical methods often require the use of a large amount of organic solvents to promote the reaction between the modifier and the hydroxyl groups on the fiber surface.

Method used

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  • Reactive compatibilized bamboo fiber/polylactic acid composite material and preparation method thereof
  • Reactive compatibilized bamboo fiber/polylactic acid composite material and preparation method thereof
  • Reactive compatibilized bamboo fiber/polylactic acid composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Reactive compatibilized bamboo fiber / PLA composite material: prepared from vegetable oil prepolymer, bamboo fiber and polylactic acid at a mass ratio of 0.25:20:79.75.

[0023] The preparation process of the vegetable oil prepolymer is as follows: 0.5 g of epoxy soybean oil and 0.01 g of cationic initiator boron trifluoride ethylamine complex are dissolved in 20 g of acetone and magnetically stirred for 5 minutes to form a vegetable oil prepolymer mixture; The mass ratio of cationic initiator and epoxidized soybean oil in the polymer is 0.02:1.

[0024] The preparation method of the composite material: spray the vegetable oil prepolymer on the surface of 40g of bamboo fiber and place it in an oven to dry for 4h at 80°C to remove acetone; mix the dried bamboo fiber coated with the vegetable oil prepolymer with 159.5g of polylactic acid After stirring evenly, add it to the feeding port of the twin-screw kneader, so that the mixture passes through the twin-screw kneader at...

Embodiment 2

[0026] Reactive compatibilized bamboo fiber / PLA composite material: It is prepared from vegetable oil prepolymer, bamboo fiber and polylactic acid at a mass ratio of 0.5:20:79.5.

[0027] The preparation process of the vegetable oil prepolymer is as follows: 1.0 g of epoxy soybean oil and 0.02 g of cationic initiator boron trifluoride ethylamine complex are dissolved in 20 g of acetone and magnetically stirred for 5 minutes to form a vegetable oil prepolymer mixture; The mass ratio of cationic initiator and epoxidized soybean oil in the polymer is 0.02:1.

[0028] The preparation method of the composite material: spray the vegetable oil prepolymer on the surface of 40g of bamboo fiber and place it in an oven to dry at 80°C for 4h to remove acetone; mix and stir the dried bamboo fiber coated with the vegetable oil prepolymer and 159g of polylactic acid After uniformity, it is added to the feed port of the twin-screw mixer, so that the mixture passes through the twin-screw mixer...

Embodiment 3

[0030] Reactive compatibilized bamboo fiber / PLA composite material: It is prepared from vegetable oil prepolymer, bamboo fiber and polylactic acid at a mass ratio of 0.75:20:79.25.

[0031] The preparation process of the vegetable oil prepolymer is as follows: 1.5 g of epoxy soybean oil and 0.03 g of cationic initiator boron trifluoride ethylamine complex are dissolved in 20 g of acetone and magnetically stirred for 5 minutes to form a vegetable oil prepolymer mixture; The mass ratio of cationic initiator and epoxidized soybean oil in the polymer is 0.02:1.

[0032]The preparation method of the composite material: spray the vegetable oil prepolymer on the surface of 40g of bamboo fiber and place it in an oven to dry at 80°C for 4h to remove acetone; mix the dried bamboo fiber coated with the vegetable oil prepolymer with 158.5g of polylactic acid After stirring evenly, add it to the feeding port of the twin-screw mixer, so that the mixture passes through the twin-screw mixer a...

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Abstract

The invention belongs to the technical field of fiber-reinforced resin composite materials and particularly relates to a reactive compatibilized bamboo fiber / polylactic acid composite material and a preparation method thereof. The preparation method comprises the following steps: coating bamboo fibers by adopting a vegetable oil prepolymer, uniformly mixing the obtained bamboo fibers and a polylactic acid resin, mixing by a twin screw mixer to induce a vegetable oil prepolymer reaction so as to obtain a reactive compatibilized bamboo fiber / polylactic acid mixture, and performing hot press molding on the mixture in a mold, so as to obtain the environmental-friendly and biodegradable bamboo fiber / / polylactic acid composite material. The prepared composite material has excellent tensile strength, tensile modulus and elongation at break.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced resin composite materials, and in particular relates to a reactive compatibilized bamboo fiber / polylactic acid composite material and a preparation method thereof. Background technique [0002] In recent years, environmental issues have attracted increasing attention, which has greatly promoted the development of biodegradable materials. Biodegradable polymer materials such as polylactic acid (PLA) are widely used because of their good biocompatibility and mechanical properties, non-toxic, plastic processing, no pollution in the production process, and complete biodegradation. PLA is mainly derived from the fermented sugar of organic crop straw to produce lactic acid, which is then polymerized, and the final degradation product is CO 2 and water, is considered to be one of the most promising renewable green polymer materials. However, the high price of PLA and the disadvantages of britt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/02C08L91/00
CPCC08L67/04C08L2201/06C08L2205/03C08L2205/05C08L2205/08C08L2205/16C08L97/02C08L91/00
Inventor 刘文地邱仁辉陈婷婷费铭恩邱建辉於德美付腾飞
Owner FUJIAN AGRI & FORESTRY UNIV
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