CN213388406U

CN213388406U - Special-shaped polypropylene crude fiber

Info

Publication number: CN213388406U
Application number: CN202022086648.9U
Authority: CN
Inventors: 杨程; 王勇忠
Original assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Current assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-06-08
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to a dysmorphism polypropylene coarse fiber relates to cement base combined material's field, including the fibre body, the circular arc recess has been seted up on the side of fibre body, the inside flexuous hole of having seted up of fibre body, the flexuous hole runs through the fibre body along fibre body length direction, the interval is provided with a plurality of sunken points on the lateral wall of fibre body, a plurality of sunken points are along the length direction linear arrangement of fibre body, arbitrary sunken point is all sunken to fibre body inside. The cement matrix composite material has the effects that the fibers are tightly combined with the cement matrix, and the strength and the toughness of the cement matrix composite material are improved.

Description

Special-shaped polypropylene crude fiber

Technical Field

The application relates to the field of cement-based composite materials, in particular to a profiled polypropylene crude fiber.

Background

Common cement-based materials can generate cracks in application, and the strength and the toughness are not ideal. The cement-based composite material is prepared by taking portland cement as a matrix, taking high-performance fibers such as alkali-resistant glass fibers, general synthetic fibers, various ceramic fibers, carbon, aramid fibers and the like, metal wires, natural plant fibers and mineral fibers as reinforcements, adding fillers, chemical auxiliaries and water, and performing a composite process.

In the related art, when cement-based composite materials are produced, columnar fibers are added to a portland cement matrix to improve the strength and toughness of the cement matrix.

In view of the above-mentioned related art, the inventors believe that the cement matrix is not tightly bonded to the columnar fibers, and the strength and toughness of the cement matrix composite are not sufficiently improved, and there is a need for improvement.

SUMMERY OF THE UTILITY MODEL

In order to enable the fiber and the cement matrix to be combined more tightly and better improve the strength and the toughness of the cement-based composite material, the application provides the profiled polypropylene coarse fiber.

The special-shaped polypropylene crude fiber adopts the following technical scheme:

the utility model provides a dysmorphism polypropylene coarse fibre, includes the fibre body, the circular arc recess has been seted up on the side of fibre body, the inside flexile pore of having seted up of fibre body, the flexile pore runs through the fibre body along fibre body length direction, the interval is provided with a plurality of sunken points on the lateral wall of fibre body, a plurality of sunken points are along the length direction linear arrangement of fibre body, arbitrary sunken point is all sunken to fibre body is inside.

Through adopting above-mentioned technical scheme, during production cement base combined material, the flexuole makes the fibre body softer, can fully mix with the cement base member, and the cement of fluid form flows into and stereotypes behind circular arc recess and the depressed point for the fibre combines inseparabler with the cement base member, and then has improved cement base combined material's intensity and toughness, and the sunken convenience when being linear arrangement and having improved fibre production.

Optionally, the fiber body is a polypropylene fiber.

By adopting the technical scheme, the polypropylene fiber has the characteristics of high strength, good elasticity, wear resistance and corrosion resistance, and the polypropylene fiber is used as the fiber body, so that the strength and toughness of the cement matrix are improved.

Optionally, a plurality of burr columns are arranged on the inner wall of the arc groove at intervals.

By adopting the technical scheme, the burr column greatly improves the combination area of the fiber and the cement matrix, improves the tightness of the combination of the cement matrix and the fiber, and further improves the strength and toughness of the cement matrix composite material.

Optionally, the surface of the fiber body is coated with coarse particles.

Through adopting above-mentioned technical scheme, coarse particle makes the surface roughening of spacing body, has improved the area of contact of fibre body and cement base member, has improved the inseparable degree that fibre body and cement base member combine.

Optionally, a plurality of hemispherical protrusions are arranged on the side wall of the fiber body at intervals, and the hemispherical protrusions are linearly arranged.

Through adopting above-mentioned technical scheme, the hemisphere arch has improved the combined area of cement base member and fibre side, has improved the inseparable degree that cement base member and fibre combine, and then has improved cement base member combined material's intensity and toughness, and the hemisphere arch is linear arrangement, has improved the convenience of special-shaped polypropylene coarse fibre production.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the cement-based composite material is produced, the fiber body is softer through the flexible holes and can be fully mixed with a cement matrix, and the fluid cement flows into the arc grooves and the concave points and is shaped, so that the fibers and the cement matrix are more tightly combined, the strength and the toughness of the cement-based composite material are further improved, and the convenience in fiber production is improved because the concave points are linearly arranged;

2. the concave points, the burred columns, the rough particles and the hemispherical bulges all improve the tightness of the combination of the fibers and the cement matrix, thereby improving the strength and the toughness of the cement-based composite material.

Drawings

FIG. 1 is a schematic view of a profiled polypropylene crude fiber;

FIG. 2 is a schematic view of the profiled polypropylene coarse fibers of the second embodiment.

Reference numerals: 1. a fiber body; 2. a circular arc groove; 3. a flexible aperture; 4. sunken points; 5. a bur column; 6. coarse particles; 7. and (4) hemispherical bulges.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a profiled polypropylene crude fiber.

Example 1

Referring to fig. 1, the profiled polypropylene coarse fiber comprises a fiber body 1, wherein the fiber body 1 is a polypropylene fiber, and the cross section of the fiber body 1 is rectangular. Circular arc recess 2 has all been seted up to the both sides that fibre body 1 is relative, and the length direction of circular arc recess 2 is on a parallel with the length direction of fibre body 1.

Seted up flexbile hole 3 in the fibre body 1, the direction of flexbile hole 3 is on a parallel with the length direction of fibre body 1, and flexbile hole 3 runs through fibre body 1, and flexbile hole 3 makes fibre body 1 more soft, and then makes fibre body 1 mix more fully with the cement base member, helps improving the inseparable degree that fibre body and cement base member combine. The other two opposite sides of the fiber body 1 are formed with concave points 4, the concave points 4 are concave towards the interior of the fiber body 1, the concave points 4 are linearly arranged on the two opposite sides of the fiber body 1 at intervals, the arrangement direction of the concave points 4 is the length direction of the fiber body 1, and the specific number of the concave points 4 is determined according to the length of the fiber body 1. The recessed points 4 enable the fiber body 1 to have a larger surface area, the combination area of the fiber body 1 and a cement matrix is increased, and the tightness degree of combination of the fiber body 1 and the cement matrix is further improved.

The implementation principle of the embodiment 1 is as follows: when the cement-based composite material is produced, workers add the profiled polypropylene coarse fibers into the fluid cement, then stir the cement to ensure that the profiled polypropylene coarse fibers are uniformly distributed in the fluid cement, and the fluid cement flows into the arc grooves 2, the flexible holes 3 and the concave points 4. After shaping, the arc grooves 2, the flexible holes 3 and the concave points 4 improve the bonding area of the fibers and the cement matrix, and improve the strength and toughness of the cement matrix composite material.

Example 2

Referring to fig. 2, embodiment 2 differs from embodiment 1 in that: be provided with burr post 6 on the inner wall of circular arc recess 2, the axial direction of burr post 6 deviates from the direction of circular arc recess 2 inner wall, and burr post 6 is provided with a plurality ofly on circular arc recess 2's inner wall at the interval, and the longer quantity of burr post 6 that fibre body 1 is more. The bur column 6 can greatly increase the surface area of the fiber body 1, improve the combination area of the fiber body 1 and a cement matrix, and further improve the tightness degree of the combination of the fiber body 1 and the cement matrix. Fibre body 1 all forms on being provided with two sides of sunken point 4 and has a plurality of hemispheric arch 7, and the hemispheric arch 7 and the sunken point 4 that lie in fibre body 1 with one side lie in this side width direction's both sides respectively, and hemispheric arch 7 is linear interval arrangement, and the quantity of hemispheric arch 7 keeps unanimous with the quantity of sunken point 4. The surface of the fiber body 1 is roughened to increase the bonding area between the fiber body 1 and the cement matrix, and the surface of the fiber body 1 is provided with the coarse particles 6 for roughening the surface of the fiber body 1.

The implementation principle of the embodiment 2 is as follows: when the cement-based composite material is produced, a worker puts the fiber body 1 into the cement base body and uniformly stirs the cement base body, the burr column 6, the coarse particles 6 and the hemispherical bulges 7 improve the combination area of the cement base body and the fiber body 1, the tightness degree of the combination of the cement base body and the fiber body 1 is improved after the cement base body is solidified, and the strength and the toughness of the cement-based composite material are improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A profiled polypropylene coarse fiber is characterized in that: including fibre body (1), circular arc recess (2) have been seted up on the side of fibre body (1), fibre body (1) is inside to have seted up flexile pore (3), flexile pore (3) run through fibre body (1) length direction, the interval is provided with a plurality of sunken points (4) on the lateral wall of fibre body (1), the length direction linear arrangement of fibre body (1) is followed in a plurality of sunken points (4), arbitrary sunken point (4) are all sunken to fibre body (1) inside.

2. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the fiber body (1) is made of polypropylene fibers.

3. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: a plurality of burr columns (5) are arranged on the inner wall of the arc groove (2) at intervals.

4. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the surface of the fiber body (1) is coated with rough particles (6).

5. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the fiber body is characterized in that a plurality of hemispherical bulges (7) are arranged on the side wall of the fiber body (1) at intervals, and the hemispherical bulges (7) are linearly arranged.