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Method for preparing sisal fiber-reinforced starch composite material

A composite material and sisal fiber technology, which is applied in fiber treatment, plant fiber, textiles and papermaking, can solve the problems of poor water resistance and poor mechanical properties, and achieve the effects of improving mechanical properties, facilitating processing, and improving water resistance

Inactive Publication Date: 2018-01-05
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current starch-based materials also have disadvantages such as poor mechanical properties and poor water resistance.

Method used

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  • Method for preparing sisal fiber-reinforced starch composite material

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Effect test

Embodiment 1

[0021] A preparation method of sisal fiber reinforced starch composite material, comprising:

[0022] Step 1. Roll fresh sisal with a roller, wash it, put it in an oven at 180°C and stay for 100 seconds, take it out, put it in the first reaction kettle, add 2 times the volume of sodium hydroxide solution, and heat Boil and keep for 30 minutes, take out the sisal and wash it, put it into the second reaction kettle, add 2 times the volume of ethanol solution, pressurize to 500kPa and keep for 100 minutes;

[0023] Step 2, washing the sisal hemp obtained in step 1, drying, pulverizing, soaking with methyl methacrylate for 30 minutes;

[0024] Step 3, in parts by weight, mix 100 parts of starch, 80 parts of sisal obtained in step 2, 30 parts of polycarbonate, 10 parts of polycaprolactone, 1 part of nano-zinc oxide, and 0.5 part of azobisisobutyronitrile Evenly, the raw material mixture was obtained. First, the raw material mixture was heated to melt at a heating rate of 5°C / hour ...

Embodiment 2

[0032] A preparation method of sisal fiber reinforced starch composite material, comprising:

[0033] Step 1. Roll fresh sisal with a roller, wash it, put it in an oven at 180°C and stay for 150 seconds, take it out, put it in the first reaction kettle, add 3 times the volume of sodium hydroxide solution, and heat Boil and keep for 50 minutes, take out the sisal and wash it, put it into the second reaction kettle, add 3 times the volume of ethanol solution, pressurize to 500kPa and keep for 120 minutes;

[0034] Step 2, washing the sisal hemp obtained in step 1, drying, pulverizing, soaking with methyl methacrylate for 40 minutes;

[0035] Step 3, in parts by weight, mix 100 parts of starch, 80 parts of sisal obtained in step 2, 30 parts of polycarbonate, 10 parts of polycaprolactone, 1 part of nano-zinc oxide, and 0.5 part of azobisisobutyronitrile Evenly, the raw material mixture is obtained. First, the raw material mixture is heated to melt at a heating rate of 10°C / hour a...

Embodiment 3

[0043] A preparation method of sisal fiber reinforced starch composite material, comprising:

[0044] Step 1. Roll fresh sisal with a roller, wash it, put it in an oven at 180°C and stay for 120 seconds, take it out, put it into the first reaction kettle, add 2.5 times the volume of sodium hydroxide solution, and heat Boil and keep for 40 minutes, take out the sisal and wash it, put it into the second reaction kettle, add 2.5 times the volume of ethanol solution, pressurize to 500kPa and keep for 110 minutes;

[0045] Step 2, washing the sisal hemp obtained in step 1, drying, pulverizing, soaking with methyl methacrylate for 35 minutes;

[0046] Step 3, in parts by weight, mix 100 parts of starch, 80 parts of sisal obtained in step 2, 30 parts of polycarbonate, 10 parts of polycaprolactone, 1 part of nano-zinc oxide, and 0.5 part of azobisisobutyronitrile Evenly, the raw material mixture was obtained. First, the raw material mixture was heated to melt at a heating rate of 7°C...

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Abstract

The invention discloses a method for preparing a sisal fiber-reinforced starch composite material. The method comprises the following steps: rolling fresh sisals with a rolling machine; placing the sisals in a drying oven at 180 DEG C and staying for 100-150 seconds; taking out and placing in a first reactor; adding 2-3 times the volume of sodium hydroxide solution in a second reactor; add 2-3 times the volume of ethanol solution; washing, drying, crushing and immersing the sisals with methyl methacrylate; uniformly mixing the following materials in parts by weight: 100 parts of starch, 80 parts of sisals, 30 parts of polycarbonate, 10 parts of polycaprolactone, 1 part of nano-zinc oxide and 0.5 parts of azodiisobutyronitrile; heating at a heating rate of 5-10 DEG C / hour until melting; then cooling to 5 DEG C at a cooling rate of 20-25 DEG C / hour; repeating the heating and cooling operations for 3-5 times. Compared with a conventional starch-based material, the sisal fiber-reinforced starch composite material prepared in the invention has more excellent mechanical properties and is corrosion-resistant and rub-resistant.

Description

technical field [0001] The invention relates to a starch composite material. More specifically, the present invention relates to a preparation method of sisal fiber reinforced starch composite material. Background technique [0002] Starch-based materials have received great attention and extensive research due to the advantages of readily available raw materials and biodegradability. However, the current starch-based materials also have disadvantages such as poor mechanical properties and poor water resistance. Sisal is a perennial tropical hard leaf fiber crop, which has the advantages of long fiber, tough texture, tear resistance, salt and alkali resistance, corrosion resistance, friction resistance, low temperature resistance, and little flexibility in dry and wet environments. If it can be combined with starch to make composite materials, it will inevitably improve the mechanical properties of starch-based materials, and maintain the advantages of easy degradation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L1/02C08L69/00C08L67/04C08K3/22C08J5/06C08J5/10D06M11/38D06M13/144D06M13/224D06M101/06
Inventor 刘钰馨
Owner GUANGXI TEACHERS EDUCATION UNIV
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