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Fiber-reinforced polylactic-acid composite material and preparation method thereof

A composite material, fiber reinforced technology, applied in the field of composite materials, can solve the problems of poor fracture strength and ductility, restricted application, poor interface compatibility, etc., achieves good comprehensive mechanical properties, and solves the effect of poor fracture strength and ductility.

Inactive Publication Date: 2016-07-20
顺达塑胶制品(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the interfacial compatibility between hydrophobic polylactic acid and fibers is not good, which makes the fracture strength and ductility of this type of composite material poor, restricting its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A fiber-reinforced polylactic acid composite material described in this embodiment is characterized in that the composition and weight ratio of its formula are: 52 parts of polylactic acid resin, 13 parts of kapok fiber, 5 parts of holy hemp fiber, nanofiber 6 parts of elemental, 2 parts of silicon carbide powder, 5 parts of nano-zinc phosphate, 3 parts of epoxy resin E4413, 6 parts of epichlorohydrin, 2 parts of lithium chloride, 4 parts of phenyl salicylate, 3 parts of isophorone diamine 2 parts of polyamide wax, 1 part of KH-550 coupling agent, 42 parts of 0.5mol / L potassium hydroxide, 7 parts of sodium dithionite, and 5 parts of barium stearate.

[0022] The preparation method of the fiber-reinforced polylactic acid composite material described in this embodiment is prepared by the following steps:

[0023] (1) First use epoxy resin E44 and 0.5mol / L potassium hydroxide to modify kapok fiber and holy hemp fiber respectively to obtain modified kapok fiber and modified...

Embodiment 2

[0027] A fiber-reinforced polylactic acid composite material described in this embodiment is characterized in that the composition and weight ratio of its formula are: 70 parts of polylactic acid resin, 19 parts of kapok fiber, 11 parts of holy hemp fiber, nanofiber 13 parts of prime, 9 parts of silicon carbide powder, 11 parts of nano zinc phosphate, 12 parts of epoxy resin E4421, 12 parts of epichlorohydrin, 10 parts of lithium chloride, 13 parts of phenyl salicylate, 9 parts of isophorone diamine parts, 7 parts of polyamide wax, 5 parts of KH-560 coupling agent, 60 parts of 0.5mol / L potassium hydroxide, 17 parts of sodium dithionite, and 12 parts of barium stearate.

[0028] The preparation method of the fiber-reinforced polylactic acid composite material described in this embodiment is prepared by the following steps:

[0029] (1) First use epoxy resin E44 and 0.5mol / L potassium hydroxide to modify kapok fiber and holy hemp fiber respectively to obtain modified kapok fiber...

Embodiment 3

[0033] A fiber-reinforced polylactic acid composite material described in this embodiment is characterized in that the composition and weight ratio of its formula are: 61 parts of polylactic acid resin, 16 parts of kapok fiber, 8 parts of holy hemp fiber, nanofiber 10 parts of prime, 5 parts of silicon carbide powder, 8 parts of nano-zinc phosphate, 7 parts of epoxy resin E4417, 9 parts of epichlorohydrin, 6 parts of lithium chloride, 8 parts of phenyl salicylate, 6 parts of isophorone diamine parts, 5 parts of polyamide wax, 3 parts of KH-570 coupling agent, 51 parts of 0.5mol / L potassium hydroxide, 12 parts of sodium dithionite, and 8 parts of barium stearate.

[0034] The preparation method of the fiber-reinforced polylactic acid composite material described in this embodiment is prepared by the following steps:

[0035] (1) First use epoxy resin E44 and 0.5mol / L potassium hydroxide to modify kapok fiber and holy hemp fiber respectively to obtain modified kapok fiber and mo...

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Abstract

The invention discloses a fiber-reinforced polylactic-acid composite material. The fiber-reinforced polylactic-acid composite material is prepared from the ingredients in parts by weight: polylactic-acid resin, kapok fibers, Shengma fibers, nano cellulose, silicon carbide powder, nano zinc phosphate, epoxy resin E44, epoxy chloropropane, lithium chloride, phenyl salicylate, isophorone diamine, polyamide wax, a coupling agent, 0.5mol / L potassium hydroxide, sodium dithionite and barium stearate. The prepared fiber-reinforced polylactic-acid composite material has the breaking elongation of 243.5 percent to 301.4 percent, the tensile strength of 48.2MPa to 53.4MPa and the notch impact strength of 149.2J / m to 201.7J / m, and the comprehensive mechanical properties are good, so that the problem of the traditional composite materials that the rupture strength and ductility are poor due to poor interface compatibility between polylactic acid and fibers is solved, and the needs of actual applications are met.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a fiber-reinforced polylactic acid composite material and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a biodegradable aliphatic polyester polymerized from fermented lactic acid. Compared with petroleum-based plastics, it has excellent biodegradability, and its final degradation products are carbon dioxide and water. It can replace petroleum-based plastics on a large scale in the fields of disposable injection molding, foaming and blown film to solve the increasingly serious environmental pollution problem. It is an environmentally friendly material and is mainly used in medical materials, textile materials, plastics and coatings. However, the polylactic acid material itself has problems such as poor heat resistance, high price, poor toughness, and poor dimensional stability, which restrict its wide use. [0003] In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L1/02C08L77/00C08K13/02C08K3/34C08K3/32C08K3/16C08K5/134C08K5/098
CPCC08K2201/011C08L67/04C08L2205/025C08L2205/035C08L2205/16C08L1/02C08L77/00C08K13/02C08K3/34C08K2003/321C08K3/16C08K5/134C08K5/098
Inventor 王泽陆
Owner 顺达塑胶制品(深圳)有限公司
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