Preparation method of maleic anhydride polypropylene micro-nano fiber/polyvinyl alcohol foamed material

A technology of micro-nano fiber and polyvinyl alcohol, which is applied in the field of composite materials or polymer foam materials, can solve the problems of low mechanical strength and achieve the effects of improving mechanical properties, easy access to raw materials, and easy control of conditions

Active Publication Date: 2019-06-18
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of high-strength PVA foam material, specifically discloses a preparation method of maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foam material, aiming at the existing polyvinyl alcohol foam To solve the problem of low mechanical strength of the material, the present invention uses PP-g-MAH micro-nano fibers and polyvinyl alcohol formed in situ in polyvinyl alcohol as the main components, and adds foaming agent and cross-linking agent to prepare polyvinyl alcohol foaming Composite materials, using the advantages of composite materials that can learn from each other and produce synergistic effects, effectively improve the mechanical properties of foamed materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of a kind of maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foaming material of the present embodiment comprises the following steps:

[0024] Put 700 grams of polyvinyl alcohol (PVA1799) and 300 grams of glycerin into a high-speed mixer, control the mixing temperature at 70°C, and mix evenly; melt and blend with a twin-screw extruder at 180°C and granulate to obtain Plasticized polyvinyl alcohol granules. Take 900 grams of plasticized PVA and 100 grams of PP-g-MAH and put them into a high-speed mixer, control the mixing temperature at 70°C, and mix evenly; A 6-fold stretch was performed, and the stretched blend strands were pelletized.

[0025] Take 8 grams of blended particles and add them to 92 grams of deionized water, stir at 90 ° C for 2 hours until the polyvinyl alcohol is completely dissolved to form a uniform solution; then cool the solution to 20 ° C, add sodium dodecylbenzenesulfonate 1 gram, 5 grams of n-pentane, 1...

Embodiment 2

[0027] The preparation method of a kind of maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foaming material of the present embodiment comprises the following steps:

[0028] Put 800 grams of polyvinyl alcohol (PVA1797) and 200 grams of glycerin into a high-speed mixer, control the mixing temperature at 70°C, and mix well; use a conventional method to melt and blend with a twin-screw extruder at 165°C and make granules to obtain plasticized polyvinyl alcohol granules. Take 850 grams of plasticized polyvinyl alcohol and 150 grams of PP-g-MAH and put them into a high-speed mixer, control the mixing temperature at 70°C, and mix evenly; The traction equipment is used for 8-fold stretching, and then the stretched blended strands are pelletized.

[0029] Take 15 grams of blended particles and add them to 85 grams of deionized water, stir at 85 ° C for 4 hours until the polyvinyl alcohol is completely dissolved to form a uniform solution, then cool the solution to 3...

Embodiment 3

[0031]The preparation method of a kind of maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foaming material of the present embodiment comprises the following steps:

[0032] Put 750 grams of polyvinyl alcohol (PVA1797) and 250 grams of glycerin into a high-speed mixer, control the mixing temperature at 50°C, and mix evenly; use a conventional method to melt blend with a twin-screw extruder at 170°C and make granules to obtain plasticized polyvinyl alcohol granules. Take 850 grams of plasticized PVA and 150 grams of PP-g-MAH and put them into a high-speed mixer, control the mixing temperature at 50°C, and mix evenly; Stretch 10 times, and then pelletize the stretched blended strands.

[0033] 10 grams of the blended particles were added to 90 grams of deionized water, and stirred at 95° C. for 2 hours until the polyvinyl alcohol was completely dissolved to form a uniform solution. Cool the solution to 25°C, add 2 parts of sodium lauryl sulfate, 6 parts of flu...

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Abstract

The invention belongs to the technical field of composite material or high molecular foamed material, and especially relates to a preparation method of a maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foamed material. The preparation method is capable of solving a problem in the prior art that the mechanical strength of conventional polyvinyl alcohol foamed material is low. According to the preparation method, PP-g-MAH micro-nano fiber and polyvinyl alcohol are taken as the main components, a foaming agent and a crosslinking agent are added to prepare the maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foamed material. The mechanical performance of the foamed material is improved effectively through the cooperative effect of the components of the composite material.

Description

technical field [0001] The invention relates to the field of composite materials or polymer foaming materials, in particular to a preparation method of maleic anhydride polypropylene micro-nano fiber / polyvinyl alcohol foaming material. Background technique [0002] Foaming materials have the advantages of light weight, heat resistance, and low price, and are widely used in industry, agriculture, packaging, transportation, etc. Foaming materials in my country are mainly concentrated in polystyrene foaming materials and polypropylene foaming materials , polyurethane foam and polyethylene foam. Traditional foam materials are not easy to degrade in the environment and cause some pollution to the environment. Polyvinyl alcohol (PVA) is a hydrolyzed product of polyvinyl acetate. It has a polyhydroxy structure, is non-toxic, has good adhesion, heat resistance, hydrophilicity, and is easy to degrade. Polyvinyl alcohol foam materials have good wear resistance and weather resistance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L51/06C08L3/02C08L83/04C08K5/053C08K5/42C08J9/14C08J3/24
Inventor 郭正谢娟潘玮焦姗姗
Owner ZHONGYUAN ENGINEERING COLLEGE
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