CN214324439U - Reinforced polypropylene sheet based on chopped glass fiber and mesh cloth - Google Patents
Reinforced polypropylene sheet based on chopped glass fiber and mesh cloth Download PDFInfo
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- CN214324439U CN214324439U CN202023289632.4U CN202023289632U CN214324439U CN 214324439 U CN214324439 U CN 214324439U CN 202023289632 U CN202023289632 U CN 202023289632U CN 214324439 U CN214324439 U CN 214324439U
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Abstract
The utility model discloses a reinforcing polypropylene sheet based on glass fiber and net cloth cut in short, including the polypropylene membrane of superpose in proper order, glass fiber or the fine felt of glass cut in short, net cloth, polypropylene membrane, glass fiber or the fine felt of glass cut in short, polypropylene membrane. The reinforced polypropylene sheet is produced by adding a layer of gridding cloth between the chopped glass fiber and the polypropylene film in the middle layer in the production process of the chopped glass fiber reinforced polypropylene sheet, and the gridding cloth and the chopped glass fiber reinforced polypropylene sheet are produced. By utilizing the variable property of the grid structure, the reinforcing performance of the continuous unidirectional long glass fiber is realized, and meanwhile, the product is endowed with the thermal formability of the chopped glass fiber polypropylene composite material product.
Description
Technical Field
The utility model relates to a chopped glass fiber and net cloth strengthen polypropylene sheet jointly belongs to combined material technical field.
Background
The chopped glass fiber reinforced polypropylene sheet, CMT for short, has good strength because the glass fibers have the length of 1-7cm and exist in the polypropylene sheet randomly, and the sheet with the structure has certain fluidity under the heating condition, can be used for thermal forming into anisotropic products, is widely applied in the automobile industry, particularly is compounded with the PP honeycomb core and is widely applied to automobile spare tire cover plates.
Currently, the structure and production process of the disclosed CMT include two types: film lamination and melt extrusion lamination.
Film lamination method: and superposing a polypropylene film, the chopped glass fiber or glass fiber felt scattered to 2-5cm, the polypropylene film, the chopped glass fiber or glass fiber felt scattered to 2-5cm and the polypropylene film into a compounding machine, wherein the compounding machine is set at the temperature of 190 ℃ and the speed of 3-7m/min, and the clearance of the compounding machine is 0.5-1.5mm, so as to obtain the CMT product.
Melt extrusion lamination process: and casting a polypropylene melt into a film by a screw extruder, coating the film on the surface of the chopped glass fiber mat, and then superposing the polypropylene film or a plurality of layers of sheets coated with the chopped glass fiber mat into a compound machine to obtain the CMT product.
Although the CMT product obtained by the method has good strength and formability, the tensile strength of the CMT product is still greatly different from that of a continuous long glass fiber reinforced polypropylene unidirectional tape (commercial name: UD tape), but the continuous long glass fiber reinforced polypropylene unidirectional tape has no thermoforming performance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reinforcing polypropylene sheet based on glass fibre and net cloth cut soon utilizes the variable line nature of grid structure, has had the fine reinforcing properties of continuous one-way long glass promptly, has excellent thermoformability with the CMT product is the same again simultaneously.
The utility model adopts the technical proposal that:
a reinforced polypropylene sheet based on chopped glass fibers and grid cloth comprises a polypropylene film, chopped glass fibers or glass fiber mats, grid cloth, a polypropylene film, chopped glass fibers or glass fiber mats and a polypropylene film which are sequentially stacked.
In the above technical solution, further, the grammes per square metre of the mesh fabric is 50-500g/m2The side length of the grid is 3mm-10 cm.
Furthermore, the mesh cloth is made of continuous fibers, and the material of the mesh cloth is glass fibers, natural fibers or polyester fibers or a mixture of several types of the glass fibers, the natural fibers or the polyester fibers.
Further, the chopped glass fiber or glass fiber mat is glass fiber or glass fiber mat with the chopped length of 1cm-10 cm.
The reinforced polypropylene sheet is prepared by adding a layer of mesh cloth between the chopped glass fiber or glass fiber felt positioned in the middle layer and the polypropylene film in the production process of the conventional chopped glass fiber reinforced polypropylene sheet. Because the glass fiber of the mesh cloth is unidirectional and continuous, the mesh can deform under the action of force, and the mesh cloth is additionally arranged in the reinforced polypropylene matrix, the reinforced polypropylene sheet with good tensile property and thermoformability is obtained.
The utility model has the advantages that:
1) the fibers of the mesh cloth are arranged in a continuous and unidirectional mode, unidirectional fibers are added into the random glass fibers, and the mechanical property, particularly the tensile property of the composite material is inevitably and greatly improved;
2) the grid cloth has a square or rectangular grid structure, can deform under the action of force, and is combined with the chopped glass fiber polypropylene material, so that the whole composite material has certain thermal formability.
Drawings
FIG. 1 is a schematic view of a mesh fabric used in the present invention;
FIG. 2 is a schematic view of a chopped glass fiber reinforced polypropylene sheet of the present invention;
FIG. 3 is a schematic structural view of the reinforced polypropylene sheet based on chopped fiberglass and mesh cloth of the present invention;
FIG. 4 is a schematic view of a laminated structure of a polypropylene sheet according to the present invention;
in the figure: 1 continuous fiber, 2 polypropylene film, 3 chopped glass fiber and 4 mesh cloth;
Detailed Description
Example 1
120g/m2180g/m of polypropylene film2100g/m chopped glass fiber mat2Mesh cloth (mesh side length 5mm), 100g/m2180g/m of polypropylene film2120g/m of chopped glass fiber mat2The polypropylene films are sequentially overlapped and enter a flat plate compounding machine, the temperature of the compounding machine is set to be 210 ℃, the compounding speed is 4m/min, and the gap is 1mm, so that the reinforced polypropylene sheet based on the chopped glass fiber and the mesh cloth is obtained.
Wherein the mesh cloth is continuous fiber and is made of natural fiber; the chopped length of the glass fiber in the chopped glass fiber mat is 1-10 cm.
Example 2
120g/m2180g/m of polypropylene film2200g/m chopped glass fiber mat2Mesh cloth (10 mm mesh side length) 100g/m2180g/m of polypropylene film2120g/m of chopped glass fiber mat2The polypropylene films are sequentially overlapped and enter a flat plate compounding machine, the temperature of the compounding machine is set to be 210 ℃, the compounding speed is 4m/min, and the gap is 1mm, so that the reinforced polypropylene sheet based on the chopped glass fiber and the mesh cloth is obtained.
Wherein the grid cloth is continuous fiber and is made of glass fiber; the chopped length of the glass fiber in the chopped glass fiber mat is 1-10 cm.
Example 3
120g/m2180g/m of polypropylene film250g/m chopped glass fiber mat2Mesh cloth (10 mm mesh side length) 100g/m2180g/m of polypropylene film2120g/m of chopped glass fiber mat2The polypropylene films are sequentially overlapped and enter a flat plate compounding machine, the temperature of the compounding machine is set to be 210 ℃, the compounding speed is 4m/min, and the gap is 1mm, so that the reinforced polypropylene sheet based on the chopped glass fiber and the mesh cloth is obtained.
Wherein the mesh cloth is continuous fiber and is made of polyester fiber; the chopped length of the glass fiber in the chopped glass fiber mat is 1-10 cm.
Claims (4)
1. The reinforced polypropylene sheet based on the chopped glass fibers and the grid cloth is characterized by comprising a polypropylene film, chopped glass fibers or glass fiber mats, the grid cloth, a polypropylene film, chopped glass fibers or glass fiber mats and a polypropylene film which are sequentially superposed.
2. The chopped glass fiber and mesh-based reinforced polypropylene sheet according to claim 1, wherein the gram weight of the mesh is 50-500g/m2The side length of the grid is 3mm-10 cm.
3. The chopped glass fiber and mesh fabric-based reinforced polypropylene sheet according to claim 1, wherein the mesh fabric is made of continuous fibers, and the material is glass fibers, natural fibers or polyester fibers.
4. The chopped glass fiber and mesh fabric based reinforced polypropylene sheet according to claim 1, wherein the chopped glass fiber or glass fiber mat is a glass fiber or glass fiber mat with a chopped length of 1cm-10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023289632.4U CN214324439U (en) | 2020-12-30 | 2020-12-30 | Reinforced polypropylene sheet based on chopped glass fiber and mesh cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023289632.4U CN214324439U (en) | 2020-12-30 | 2020-12-30 | Reinforced polypropylene sheet based on chopped glass fiber and mesh cloth |
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| Publication Number | Publication Date |
|---|---|
| CN214324439U true CN214324439U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023289632.4U Active CN214324439U (en) | 2020-12-30 | 2020-12-30 | Reinforced polypropylene sheet based on chopped glass fiber and mesh cloth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648749A (en) * | 2022-10-12 | 2023-01-31 | 江苏阿米巴材料有限公司 | Short glass fiber felt and PET structural foam composite board and processing method thereof |
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2020
- 2020-12-30 CN CN202023289632.4U patent/CN214324439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648749A (en) * | 2022-10-12 | 2023-01-31 | 江苏阿米巴材料有限公司 | Short glass fiber felt and PET structural foam composite board and processing method thereof |
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