Modified thermoplastic reinforced fiber material and preparation method thereof

A reinforced fiber and thermoplastic technology, which is applied in the field of modified thermoplastic reinforced fiber materials and their preparation, can solve the problems that composite materials cannot achieve natural degradation, visual pollution, ecological environment damage, etc., and achieve good toughness, good processing performance and cost. low effect

Pending Publication Date: 2022-01-18
汕头市天悦科技创新研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, after the thermosetting resin is processed and shaped, an insoluble three-dimensional network structure is formed in the polymer molecule. This structure endows it with better strength, heat resistance and chemical corrosion resistance, and also makes the material more brittle, and While they cannot be recycled, some composite materials cannot be degraded naturally, causing great damage to the ecological environment and forming extremely obvious visual pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] A preparation method of a modified thermoplastic reinforced fiber material, comprising the following steps:

[0034] Mix the dried modified starch with modified silicon dioxide particles, antioxidants, nonylphenol polyoxyethylene ether, and maleic anhydride uniformly in parts by weight, and mix at 100-110°C and 250-400RPM at high speed for 10- 25min, heat up to 270-280°C, keep warm, mix and melt for 30min, granulate, and make mixed granules;

[0035] Mix and melt the mixed particles with polylactic acid, fiber chips, sodium lauryl sulfate, and glycerol by weight, and then extrude;

[0036] The ratio of mixed particles and polylactic acid, fiber slices, sodium lauryl sulfate, and glycerol in parts by weight is 30-50:20-30:70-90:1-2:1-2;

[0037] During melt spinning, the screw speed is 220-300 rpm, the residence time of the material in the screw is 1-3 minutes, the temperature is 190-200°C, and the spinning speed is 350-500 m / min;

[0038] As a preferred embodiment, th...

specific Embodiment 1

[0040] A modified thermoplastic reinforced fiber material, comprising the following components and components by weight: 30 parts of modified starch, 65 parts of polylactic acid, 25 parts of modified silicon dioxide particles, 90 parts of fiber chips, 8 parts of sodium lauryl sulfate 8 parts, 8 parts of nonylphenol polyoxyethylene ether, 7 parts of maleic anhydride, 10 parts of antioxidant, 20 parts of glycerin.

[0041] A modified thermoplastic reinforced fiber material, the modified starch method is as follows,

[0042] Mix epichlorohydrin and sodium trimetaphosphate into starch, heat at high temperature to reach gelatinization state, and adjust pH value to 12-15;

[0043] The modified silicon dioxide particle method is as follows:

[0044] Prepare catecholethylamine solution, containing 2.5g / L catecholethylamine, 1.4g / L copper sulfate pentahydrate, 0.4mL / L hydrogen peroxide, 2-2.5g / L Tris, 10g / L of sodium hydroxide, adjust the pH to 8.0, add porous nanoparticles, treat a...

specific Embodiment 2

[0053] A modified thermoplastic reinforced fiber material, comprising the following components and components by weight: 30 parts of modified starch, 65 parts of polylactic acid, 10 parts of modified silica particles, 70 parts of fiber chips, 2 parts of sodium lauryl sulfate 3 parts, 3 parts of nonylphenol polyoxyethylene ether, 2 parts of maleic anhydride, 4 parts of antioxidant, 10 parts of glycerin.

[0054] The antioxidant is one or more combinations of sodium sulfite, sodium pyrosulfite, sodium thiosulfate, dibutyl cresol, and citric acid.

[0055] Described modified starch method is as follows,

[0056] Add a cross-linking agent to the starch, heat at high temperature to reach a gelatinized state, and adjust the pH range to 15;

[0057] The cross-linking agent adopts one or both of epichlorohydrin and sodium trimetaphosphate.

[0058] The modified silicon dioxide particle method is as follows:

[0059] Prepare catecholethylamine solution, containing 3.5g / L catecholeth...

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PUM

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Abstract

The invention discloses a modified thermoplastic reinforced fiber material, which is prepared from the following ingredients in parts by weight: 15 to 30 parts of modified starch, 30 to 65 parts of polylactic acid, 10 to 25 parts of modified silicon dioxide particles, 70 to 90 parts of fiber slices, 2 to 8 parts of lauryl sodium sulfate, 3 to 8 parts of nonylphenol polyoxyethylene ether, 2 to 7 parts of maleic anhydride, 4 to 10 parts of an antioxidant and 10 to 20 parts of glycerol. The fiber material disclosed by the invention can be naturally degraded, and meanwhile, the corresponding strength is improved while the thermoplasticity of the fiber is improved through different modified materials.

Description

technical field [0001] The invention relates to the technical field of fiber materials, in particular to a modified thermoplastic reinforced fiber material and a preparation method thereof. Background technique [0002] Polyester fiber is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, which belongs to polymer compounds. Fiber composite materials can be divided into two categories: thermoplastic carbon fiber composite materials and Thermosetting carbon fiber composites. Among them, after the thermosetting resin is processed and shaped, an insoluble three-dimensional network structure is formed in the polymer molecule, which endows it with better strength, heat resistance and chemical corrosion resistance, and also makes the material more brittle, and While they cannot be recycled, some composite materials cannot be degraded naturally, causing great damage to the ecological e...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L67/04C08L3/04C08L67/02C08K9/04C08K9/02C08K7/26C08K9/10C08J5/06
CPCC08J5/06C08J2367/04C08J2403/04C08K9/04C08K9/02C08K7/26C08K9/10
Inventor林玉惠
Owner汕头市天悦科技创新研究院有限公司