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Antibacterial flame-retardant chopped polypropylene fiber composite material and preparation method thereof

A polypropylene fiber and composite material technology, applied in the field of polypropylene fiber, can solve problems such as difficult to achieve mutual reinforcement mechanical properties, difficult to control matrix crystallization, weak fiber binding force, etc., achieve good long-term antibacterial effect, reduce agglomeration, and resist Good bending performance

Active Publication Date: 2022-02-01
GUANGDONG WALKKIND SPECIAL FIBERBOARD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, due to the weak binding force between fibers, it is difficult to achieve the effect of mutual reinforcement of mechanical properties, so most of them use the method of modifying the matrix fiber to enhance the binding force, but the crystallization of the matrix is ​​difficult to control and the production cost is high; On the other hand, there are currently few research reports on fiber composites with high mechanical properties and multi-effect functions. Therefore, how to enhance the bonding force between fibers through a simple process while obtaining excellent antibacterial and flame retardant properties Fiber composite materials are of great significance to industrial production

Method used

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  • Antibacterial flame-retardant chopped polypropylene fiber composite material and preparation method thereof
  • Antibacterial flame-retardant chopped polypropylene fiber composite material and preparation method thereof
  • Antibacterial flame-retardant chopped polypropylene fiber composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1 Preparation of Modified Carbon Nanotubes-SiO 2

[0039] Carbon nanotubes, SiO 2 , guar gum, and isopropanol were sequentially added in a mass ratio of 1:1:4.5:2.8, stirred and mixed evenly, and dried at 180°C for 7 hours to obtain; the modified carbon nanotube-SiO 2 Both adopt the modified carbon nanotube-SiO prepared in this example 2 .

Embodiment 2

[0041] The composition of the mixed material of the antibacterial flame retardant chopped carbon fiber composite material is as follows:

[0042] The composite material consists of 5% bleached kraft softwood pulp, 25% chopped carbon fiber, 55% chopped polypropylene fiber, modified carbon nanotube-SiO 2 5%, silver oxide 5%, propylene oxide-lignin 5% composition;

[0043] The total amount of composite material feeding is 260kg;

[0044] The length of chopped carbon fiber is 6mm;

[0045] The length of the chopped polypropylene fiber is 5mm;

[0046] The specific preparation steps of antibacterial chopped carbon fiber composite materials are as follows:

[0047] S1. Pulp preparation: disintegrate the bleached kraft softwood pulp, then grind the pulp to 45 ° SR and store it in the pulp storage tank;

[0048] S2, slurry mixing: the stored bleached kraft softwood pulp, chopped carbon fiber, chopped polypropylene fiber, antibacterial agent, modified carbon nanotube-SiO 2 1. Pro...

Embodiment 3

[0054] The composition of the mixed material of the antibacterial chopped carbon fiber composite material is as follows:

[0055] The composite material consists of 8% bleached kraft softwood pulp, 28% chopped carbon fiber, 50% chopped polypropylene fiber, carbon nanotube-SiO 2 6%, silver oxide 4%, propylene oxide-lignin 4%;

[0056] The total amount of composite material feeding is 260kg;

[0057] The length of the chopped carbon fiber is 6mm;

[0058] The length of the chopped polypropylene fiber is 5mm;

[0059] The specific preparation steps of the antibacterial chopped carbon fiber composite material are consistent with those in Example 2.

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Abstract

The invention belongs to the technical field of polypropylene fibers, and particularly relates to an antibacterial flame-retardant chopped polypropylene fiber composite material and a preparation method thereof. The composite material is composed of 5-15% of bleached sulfate softwood pulp, 5-30% of chopped carbon fibers, 40-70% of chopped polypropylene fibers, 1-15% of modified carbon nanotube-SiO2, 0.5-6% of an antibacterial agent and 0.5-8% of epoxypropane-lignin, the lengths of the chopped carbon fibers and the chopped polypropylene fibers are 6 mm and 5 mm respectively, the composite material has high blending uniformity, the tensile strength of the prepared composite material can reach 181.4-202.7 MPa, the modulus can reach 20.3-22.4 GPa, and meanwhile, the added modified carbon nano tube-SiO2 can increase the adsorption with an antibacterial agent, so that a long-acting broad-spectrum antibacterial effect is achieved; the composite material can be used in the fields of daily chemicals, aviation, marine industry, safety protection, sports equipment and the like.

Description

technical field [0001] The invention belongs to the technical field of polypropylene fibers, and in particular relates to an antibacterial and flame-retardant chopped polypropylene fiber composite material and a preparation method thereof. [0002] technical background [0003] Polypropylene (PP), usually called polypropylene, is one of the four major synthetic fibers. It is a synthetic fiber made from isotactic polypropylene by melt spinning. Polypropylene is light in texture and has a relative density of only 0.90-0.91g / cm 3 , its molecular structure is regular, its crystallinity is high, its mechanical properties are excellent, its chemical stability is good, and it has the economic advantages of abundant resources, low price, easy processing, and it is a kind of synthetic fiber with broad development prospects. However, due to the high degree of regularity of polypropylene molecular chains, the crystallization rate is fast during the cooling process, and the size of spher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/07D01F1/10
CPCD01F6/46D01F1/07D01F1/103D01F1/10
Inventor 盛小兵
Owner GUANGDONG WALKKIND SPECIAL FIBERBOARD TECH
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