CN108656690B - High-strength fiber composite board structure - Google Patents
High-strength fiber composite board structure Download PDFInfo
- Publication number
- CN108656690B CN108656690B CN201810810530.0A CN201810810530A CN108656690B CN 108656690 B CN108656690 B CN 108656690B CN 201810810530 A CN201810810530 A CN 201810810530A CN 108656690 B CN108656690 B CN 108656690B
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- layer
- layers
- flat cloth
- fiber composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000000835 fiber Substances 0.000 title claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims abstract description 82
- -1 polypropylene Polymers 0.000 claims abstract description 82
- 229920001155 polypropylene Polymers 0.000 claims abstract description 82
- 239000004744 fabric Substances 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 238000009954 braiding Methods 0.000 claims abstract description 11
- 238000009941 weaving Methods 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 238000001192 hot extrusion Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a high-strength fiber composite board structure, which comprises 3-5 polypropylene reinforcing layers which are compounded into a whole in the middle, wherein the two sides of the polypropylene reinforcing layers are polypropylene plain cloth layers, and a polypropylene film layer is arranged outside the polypropylene plain cloth layers; the polypropylene flat cloth layer is formed by weaving polypropylene woven belts with solid sections in the warp direction and the weft direction; the polypropylene reinforcement layer is formed by weaving polypropylene woven belts with spiral sections in the warp direction and weft direction; the invention has the advantages that: the inside of the braiding belt is of a folding structure or a spiral structure, only the parts at two sides are affected by temperature during heating and rolling, and the middle part has space, so that the toughness reduction caused by temperature is reduced; the existence of the space can ensure that when external force is applied, tiny dislocation can occur between the inner layers of the braiding belt, and the toughness is effectively enhanced. And the flat cloth layers on the two sides ensure the surface smoothness of the fiber composite board, which is beneficial to the protection of steel coils.
Description
Technical Field
The invention relates to a packaging material, in particular to a composite fiber board structure.
Background
In the steel coil transportation process, effective protection is required for the steel coil, and the prior art generally adopts a fiber composite board and an angle bead to protect the steel coil. The composite fiber board disclosed in the prior art as disclosed in China patent application No. 02109720.8 adopts a multi-layer composite structure, wherein the inside of the composite fiber board is compounded into a whole by adopting a plurality of layers of woven polypropylene cloth, but because the polypropylene cloth is woven by warp-wise and weft-wise woven belts, the inside of the woven belts is solid, so that the finally compounded product has better hardness but insufficient toughness, and the outside of a steel coil is round and is very easy to break when in use; and because of the solid structure, the steel coil has no buffering force and is unfavorable for protecting the steel coil.
In addition, in the process of manufacturing the composite board, it is inevitably required to heat and roll the multi-layer woven cloth, and the heat and roll causes the performance degradation, especially the toughness degradation, of the polypropylene material.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a fiber composite board with better toughness and elasticity, which comprises the following specific technical scheme:
The high-strength fiber composite board structure comprises 3-5 polypropylene reinforcing layers which are integrally combined in the middle, wherein the two sides of the polypropylene reinforcing layer are polypropylene plain cloth layers, and a polypropylene film layer is arranged outside the polypropylene plain cloth layers; the polypropylene flat cloth layer is formed by weaving polypropylene woven belts with solid sections in the warp direction and the weft direction; the polypropylene reinforcement layer is formed by weaving polypropylene woven belts with spiral or broken line type sections in the warp direction and weft direction;
The method for compounding the polypropylene reinforcing layer into a whole comprises the following steps: hot extrusion of the polypropylene reinforcing layers at two sides and the polypropylene laminated film in the middle into a whole at 240-248 ℃;
the polypropylene flat cloth layer and the polypropylene film layer and the polypropylene reinforcing layer are compounded into a whole by adopting the method.
Preferably, the polypropylene reinforcement layer is 3 layers.
The invention has the advantages that: the inside of the braiding belt is of a folding structure or a spiral structure, only the parts at two sides are affected by temperature during heating and rolling, and the middle part has space, so that the toughness reduction caused by temperature is reduced; the existence of the space can ensure that when external force is applied, tiny dislocation can occur between the inner layers of the braiding belt, and the toughness is effectively enhanced. And the flat cloth layers on the two sides ensure the surface smoothness of the fiber composite board, which is beneficial to the protection of steel coils.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic drawing of the textile construction of a woven tape of polypropylene flat cloth layer;
FIG. 3 is a schematic view of the structure between spiral polypropylene reinforced layers;
Fig. 4 is a schematic structural view of a fold-line type polypropylene reinforcing layer.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, as shown in fig. 1, the invention comprises 3-5 polypropylene reinforcing layers 3 which are integrally combined in the middle, wherein the two sides of the polypropylene reinforcing layer 3 are polypropylene flat cloth layers 2, and a polypropylene film layer 1 is arranged outside the polypropylene flat cloth layers 2;
as shown in fig. 2, the polypropylene flat cloth layer 2 is formed by weaving a polypropylene woven belt with a solid section in the warp direction and the weft direction;
as shown in fig. 3, the polypropylene reinforcement layer is formed by weaving a polypropylene woven belt with a spiral section in the warp direction and the weft direction;
The method for compounding the polypropylene reinforcing layer into a whole comprises the following steps: hot extrusion of the polypropylene reinforcing layers at two sides and the polypropylene laminated film in the middle into a whole at 240-248 ℃;
the polypropylene flat cloth layer and the polypropylene film layer and the polypropylene reinforcing layer are compounded into a whole by adopting the method.
Preferably, the polypropylene reinforcement layer is 3 layers.
As shown in fig. 4, the cross section of the polypropylene braid of the polypropylene reinforcement layer may also be of the folded line type.
The manufacturing method of the woven belt of the polypropylene reinforcing layer comprises the following steps: winding or folding the polypropylene film, forming a braiding belt, and weaving by combining the warp direction and the weft direction by using the braiding belt to prepare a braiding cloth; the polypropylene flat cloth layer is directly cut into strips by using a polypropylene film, and the strips are used for manufacturing the woven cloth for the polypropylene flat cloth layer;
the inside of the braid belt with the polypropylene reinforcing layer is of a folding (as shown in fig. 4) structure or a spiral structure (as shown in fig. 3), only the parts 31 on two sides are affected by temperature when being heated and rolled, and the middle part has a space 32, so that the toughness reduction caused by temperature is reduced; the existence of the space can ensure that when external force is applied, tiny dislocation can occur between the inner layers of the braiding belt, and the toughness is effectively enhanced. And the flat cloth layers on the two sides ensure the surface smoothness of the fiber composite board, which is beneficial to the protection of steel coils. According to a sample tensile test with the length of 300mm and the width of 10mm, the fiber composite board with the same layer number has the advantages that compared with a solid type fiber composite board, the breaking tension is increased by 5%, and the length during breaking is increased by 15%.
The polypropylene film layer may be made of polypropylene and dye.
The material proportion of the polypropylene reinforcing layer and the layer number can be changed according to the performance requirement of the product.
The material of the invention can adopt SLPP-200A type special coating material for the Sanle brand polypropylene woven bag of Shanghai Sanle polymer material limited company as a polypropylene coating film when the layers are compounded, and the compounding equipment can adopt a hot melt adhesive coating machine produced by Rayleigh An Shimao Feng mechanical limited company.
Claims (2)
1. The utility model provides a high-strength fiber composite board structure which characterized in that: the polypropylene composite material comprises 3-5 polypropylene reinforcing layers which are integrally combined in the middle, wherein the two sides of the polypropylene reinforcing layers are polypropylene flat cloth layers, and a polypropylene film layer is arranged outside the polypropylene flat cloth layers; the polypropylene flat cloth layer is formed by weaving polypropylene woven belts with solid sections in the warp direction and the weft direction;
The polypropylene reinforcement layer is formed by weaving polypropylene woven belts with spiral or broken line type sections in the warp direction and weft direction;
The manufacturing method of the woven belt of the polypropylene reinforcing layer comprises the following steps: winding or folding the polypropylene film, forming a braiding belt, and weaving by combining the warp direction and the weft direction by using the braiding belt to prepare a braiding cloth; the polypropylene flat cloth layer is directly cut into strips by using a polypropylene film, and the strips are used for manufacturing the woven cloth for the polypropylene flat cloth layer;
The method for compounding the polypropylene reinforcing layer into a whole comprises the following steps: hot extrusion of the polypropylene reinforcing layers at two sides and the polypropylene laminated film in the middle into a whole at 240-248 ℃;
the polypropylene flat cloth layer and the polypropylene film layer and the polypropylene reinforcing layer are compounded into a whole by adopting the method.
2. The high strength fiber composite board structure of claim 1 wherein: the polypropylene reinforcing layer is 3 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810530.0A CN108656690B (en) | 2018-07-23 | 2018-07-23 | High-strength fiber composite board structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810530.0A CN108656690B (en) | 2018-07-23 | 2018-07-23 | High-strength fiber composite board structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108656690A CN108656690A (en) | 2018-10-16 |
| CN108656690B true CN108656690B (en) | 2024-05-28 |
Family
ID=63788579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810810530.0A Active CN108656690B (en) | 2018-07-23 | 2018-07-23 | High-strength fiber composite board structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108656690B (en) |
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| Publication number | Publication date |
|---|---|
| CN108656690A (en) | 2018-10-16 |
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