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Polyvinyl alcohol fiber dispersion technology and application thereof

A polyvinyl alcohol fiber and dispersion technology, which is applied in the field of materials, can solve problems such as poor dispersion, and achieve the effect of simple technology, easy control, and improved dispersion uniformity

Pending Publication Date: 2019-06-11
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a polyvinyl alcohol fiber dispersion technology and its application to solve the problem of poor dispersion of the above-mentioned polyvinyl alcohol fiber in the application of concrete materials

Method used

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  • Polyvinyl alcohol fiber dispersion technology and application thereof
  • Polyvinyl alcohol fiber dispersion technology and application thereof
  • Polyvinyl alcohol fiber dispersion technology and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Use graphene powder to disperse polyvinyl alcohol fibers, the specific steps are as follows:

[0027] (1) 1g polyvinyl alcohol fiber (its initial product state is as figure 1 As shown, it is a bundle) placed in a glass container, stirred at 5°C for 120s, the bundle fiber becomes fluffy (such as figure 2 shown).

[0028] (2) Add 0.1g of graphene powder with a particle size of 5 to 50 microns to the polyvinyl alcohol fiber in step (1), then put the mixture together in a ball mill, stir for 120s, and the fluffy fiber is dispersed into a monofilament (Such as image 3 As shown), the polyvinyl alcohol fiber is dispersed, and finally a monofilament polyvinyl alcohol fiber is obtained.

[0029] Two, the monofilament polyvinyl alcohol fiber obtained above is applied to the preparation of concrete materials, according to the following steps:

[0030] (1) Determine the amount of cement, water, sand, aggregate and monofilament polyvinyl alcohol fiber according to the concr...

Embodiment 2

[0036] Using graphene powder to disperse polyvinyl alcohol fibers, the specific steps are as follows:

[0037] (1) Put 1 g of polyvinyl alcohol fibers in a glass container, stir at 35°C for 150 s, and the bundled fibers will become fluffy fibers.

[0038] (2) Add 0.2g of graphene powder with a particle size of 5 to 50 microns to the polyvinyl alcohol fiber in step (1), then put the mixture together in a ball mill, stir for 120s, and the fluffy fiber is dispersed into a monofilament , the polyvinyl alcohol fibers are dispersed, and finally monofilament polyvinyl alcohol fibers are obtained.

[0039] According to the method of Example 1, the monofilament polyvinyl alcohol fibers were applied to the preparation of concrete materials, and the results showed that the monofilament polyvinyl alcohol fibers obtained in this embodiment could be well dispersed in the concrete.

Embodiment 3

[0041] Using graphene powder to disperse polyvinyl alcohol fibers, the specific steps are as follows:

[0042] (1) Put 1 g of polyvinyl alcohol fibers in a glass container, stir at 50°C for 180 s, and the bundled fibers become fluffy.

[0043] (2) Add 0.2g of graphene powder with a particle size of 5 to 50 microns to the polyvinyl alcohol fiber in step (1), then put the mixture together in a ball mill, stir for 120s, and the fluffy fiber is dispersed into a monofilament , the polyvinyl alcohol fibers are dispersed, and finally monofilament polyvinyl alcohol fibers are obtained.

[0044] According to the method of Example 1, the monofilament polyvinyl alcohol fibers were applied to the preparation of concrete materials, and the results showed that the monofilament polyvinyl alcohol fibers obtained in this embodiment could be well dispersed in the concrete.

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Abstract

The invention discloses a polyvinyl alcohol fiber dispersion technology, comprising the following steps: (1) placing polyvinyl alcohol fiber in a container and conducting stirring, so as to convert the polyvinyl alcohol fiber from bundle fiber to bulky fiber; (2) adding a powder having a particle size of a micrometer order to the system of the step (1), and then stirring the mixture in a ball milluntil the bulky fiber is dispersed into monofilaments to achieve dispersion of the polyvinyl alcohol fiber, so as to finally obtain monofilament polyethylene alcohol fiber. The invention also discloses application of the dispersion technology to preparation of concrete materials. The dispersion technology can disperse the polyvinyl alcohol fiber well, and the added powder does not affect variousmechanical properties of the concrete material, but improves the dispersion uniformity of the polyvinyl alcohol fiber in the concrete, and better improves the reinforcement toughening performance of the concrete. The dispersion technology has the advantages of simpleness, short process, easy control, low cost and easy industrial production.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a polyvinyl alcohol fiber dispersion technology and its application. Background technique [0002] Polyvinyl alcohol fiber (referred to as PVA fiber) is a synthetic fiber with excellent performance and a wide range of uses. It has high tensile strength and elastic modulus, good alkali resistance, weather resistance, abrasion resistance, corrosion resistance, Radiation resistance, adhesion to cement substrates, in line with many excellent properties of new materials, and has excellent environmental performance, widely used in non-woven fabrics, hemp spinning, cotton spinning, military industry, papermaking, wool spinning, cement reinforcement, etc. [0003] The finished product of polyvinyl alcohol fiber is long-cut fiber, and it is easily bonded to each other during packaging, storage and transportation to form clusters of fiber bundles. When clustered polyvinyl alcohol fibers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02
Inventor 赵春花祝小龙王子健卓静潘颖刘先锋王思长董秀坤李晓蕾袁龄卿周博
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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