CN212640311U

CN212640311U - Special-shaped polypropylene crude fiber

Info

Publication number: CN212640311U
Application number: CN202021453307.4U
Authority: CN
Inventors: 王勇忠; 杨程
Original assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Current assignee: Shanghai Shenxiang Concrete Fiber Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-02
Anticipated expiration: 2030-07-21

Abstract

The application relates to a heterotypic polypropylene coarse fiber, it includes the fibre body, the fibre body sets up to cylindric, the week side of fibre body is fixed with the branch, the branch is provided with three at least. This application helps promoting the occlusal force between fibre body and the cement base member to the effect of cohesiveness between reinforcing fibre body and the cement base member.

Description

Special-shaped polypropylene crude fiber

Technical Field

The application relates to the technical field of cement matrix composite materials, in particular to a profiled polypropylene coarse fiber.

Background

The concrete fiber is a high-performance fiber specially used for concrete, can effectively control microcracks caused by factors such as plastic shrinkage, dry shrinkage and temperature change of the concrete, prevent and inhibit the formation and development of the original cracks of the concrete, greatly improve the anti-cracking and anti-permeability performance and the anti-abrasion performance of the concrete, and increase the toughness of the concrete, thereby prolonging the service life of the concrete.

Concrete has the defects of high brittleness, low tensile strength, poor toughness and the like, and in the related technology, concrete fibers are usually added into the concrete to improve the tensile strength and the toughness of the concrete.

In view of the above-mentioned related art, the inventors considered that there was a defect that the engaging force between the outer surface of the fiber and the cement matrix was not sufficiently large, and the adhesion between the concrete fiber and the cement matrix was not sufficiently strong.

SUMMERY OF THE UTILITY MODEL

The application provides a profiled polypropylene coarse fiber in order to prevent the insufficient engaging force between the outer surface of the fiber and a cement matrix, thereby causing the insufficient bonding property between the concrete fiber and the cement matrix.

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

the utility model provides a heterotypic polypropylene coarse fiber, includes the fibre body, the fibre body sets up to cylindric, the week side of fibre body is fixed with the branch, the branch is provided with three at least.

Through adopting above-mentioned technical scheme, through the week side at the fibre body sets up the branch, help promoting the occlusal force between fibre body and the cement base member to the cohesiveness between reinforcing fibre body and the cement base member.

Preferably, the branches are arranged linearly in the direction of the fiber body axis.

Through adopting above-mentioned technical scheme, set up to the straight line through the axis branch with branch at the fibre body, help promoting the fastness of branch and cement base body contact.

Preferably, the fiber body has a length of 0.5 to 50mm and a diameter of 0.1 to 1.0 mm.

By adopting the technical scheme, the fiber body with the length of 0.5-50mm and the diameter of 0.1-1.0mm is beneficial to ensuring the strength of the fiber body.

Preferably, any of the branch axis lengths is from 0.1 to 0.5 times the diameter of the fiber body.

By adopting the technical scheme, the branch is set to be 0.1-0.5 times of the diameter of the fiber body, so that the strength of the branch is ensured.

Preferably, any one of the branches is arranged in a cross shape.

Through adopting above-mentioned technical scheme, through setting up the branch into the cross, help promoting the area of contact of branch and cement base member.

Preferably, the fiber body is polypropylene coarse fiber.

Through adopting above-mentioned technical scheme, through setting up the fibre body into polypropylene coarse fibre, help promoting the intensity and the toughness of fibre body.

Preferably, the branches are arranged in a curved shape along the axial direction of the fiber body.

Through adopting above-mentioned technical scheme, through setting up branch into the curvilinear figure at the axis branch of fibre body, help promoting branch and the intensity that the cement base member contacted.

Preferably, the branches are evenly spaced around the circumference of the fiber body.

Through adopting above-mentioned technical scheme, through setting up branch even interval in fibre body week side, help promoting the stability of branch and cement base member contact.

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

1. the branch is arranged on the peripheral side of the fiber body, so that the gripping force between the fiber body and the cement matrix is promoted, and the cohesiveness between the fiber body and the cement matrix is enhanced;

2. the branches are arranged into the cross shape and the branches are arranged into the straight line shape along the axial direction of the fiber body, so that the stability of connection between the branches and the cement matrix is improved;

3. the fiber body has the length of 0.5-50mm and the diameter of 0.1-1.0mm, and is made of polypropylene coarse fiber, so that the strength of the fiber body is improved.

Drawings

FIG. 1 is a schematic view of a profiled polypropylene coarse fiber structure according to one embodiment;

FIG. 2 is a schematic diagram of the structure of profiled polypropylene coarse fibers according to the second embodiment.

Reference numerals: 1. a fiber body; 11. polypropylene coarse fibers; 2. and (4) branching.

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 cylindrical, branches 2 are fixed on the periphery of the fiber body 1, and four branches 2 are arranged.

In the application, the staff stirs in putting into the cement base member with fibre body 1, and branch 2 on the fibre body 1 fully contacts with the cement base member, promotes the occlusal force of fibre body 1 and cement base member.

Referring to fig. 1, a fiber body 1 is provided with polypropylene coarse fibers 11, any branch 2 is provided with a cross shape, the branch 2 is provided with a straight line shape along the axial direction of the polypropylene coarse fibers 11, six branches 2 are uniformly arranged along the length direction of the branch 2 at intervals, the length of the polypropylene coarse fibers 11 is 10mm, the diameter of the polypropylene coarse fibers 11 is 1.0mm, and the axial length of the branch 2 is 0.3 times of the diameter of the polypropylene coarse fibers 11.

The implementation principle of the embodiment 1 is as follows: in the application, the staff puts into the cement base member with the polypropylene coarse fibre 11 that week side is fixed with branch 2 and stirs, and the cement base member closely laminates with branch 2 of 11 week sides of polypropylene coarse fibre in the stirring process for polypropylene coarse fibre 11 more closely laminates with the cement base member.

Example 2

Referring to fig. 2, the profiled polypropylene coarse fiber comprises branches 2 which are arranged in a curve shape along the axial direction of the polypropylene coarse fiber 11, eight branches 2 are arranged at regular intervals along the curve direction, and the branches 2 on any plane are arranged at regular intervals around the peripheral side of the polypropylene coarse fiber 11.

The implementation principle of the embodiment 2 is as follows: in use, the worker places the polypropylene coarse fibers 11 distributed along the curve of the peripheral side branch 2 into the cement matrix, and then the cement matrix is in full contact with the branch 2 distributed along the curve.

The implementation principle of the profiled polypropylene coarse fiber in the embodiment of the application is as follows: during the application, the staff puts the polypropylene coarse fibers 11 fixed with the branches 2 into the cement matrix, and in the mixing process, the cement matrix is fully contacted with the branches 2, so that the polypropylene coarse fibers 11 are fully contacted with the cement matrix.

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 crude fiber is characterized in that: including fibre body (1), fibre body (1) sets up to cylindric, the week side of fibre body (1) is fixed with branch (2), branch (2) are provided with three at least.

2. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the branches (2) are arranged in a straight line shape along the axial direction of the fiber body (1).

3. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the length of the fiber body (1) is 0.5-50mm, and the diameter is 0.1-1.0 mm.

4. The profiled polypropylene coarse fiber as set forth in claim 3, wherein: the axial length of any branch (2) is 0.1-0.5 times of the diameter of the fiber body (1).

5. The profiled polypropylene coarse fiber as set forth in claim 2, wherein: any branch (2) is arranged into a cross shape.

6. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the fiber body (1) is polypropylene coarse fiber (11).

7. The profiled polypropylene coarse fiber as set forth in claim 1, wherein: the branches (2) are arranged in a curve shape along the axial direction of the fiber body (1).

8. The profiled polypropylene coarse fiber as set forth in claim 6, wherein: the branches (2) are uniformly arranged around the periphery of the fiber body (1) at intervals.