CN209869612U - Prepreg of polyester non-woven fabric composite glass fiber knitted felt - Google Patents
Prepreg of polyester non-woven fabric composite glass fiber knitted felt Download PDFInfo
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- CN209869612U CN209869612U CN201822208495.3U CN201822208495U CN209869612U CN 209869612 U CN209869612 U CN 209869612U CN 201822208495 U CN201822208495 U CN 201822208495U CN 209869612 U CN209869612 U CN 209869612U
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Abstract
The utility model discloses a fine knitted felt preimpregnation material of polyester non-woven fabrics compound glass, including the compound felt layer that impregnated resin pasted and the PP thin layer of its both sides, the PP thin layer of compound felt layer and both sides is stuck with the layer through resin respectively and is fixed. The prepreg of the polyester non-woven fabric composite glass fiber knitted felt can be used for producing products in mould pressing, pipe coiling or laminating processes after being cut, an upper layer film and a lower layer film are removed during use, the products are placed into a mould for high-temperature forming after being cut randomly, the wet operation is changed into the dry operation, the operation environment of workers can be effectively improved, and the volatilization of harmful substances in the operation environment is reduced; the method can be used in the fields of structural members such as pipeline repair, container reinforcement and the like.
Description
Technical Field
The utility model relates to a preimpregnation material, concretely relates to compound fine knitted felt preimpregnation material of polyester non-woven fabrics glass.
Background
Prepreg is a composition of a resin matrix and a reinforcement made by impregnating continuous fibers or fabrics with the resin matrix under strictly controlled conditions, and is an intermediate material for making composite materials.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a polyester non-woven fabrics compound glass fiber knitting felt preimpregnation material that can the fast cure, can dry process operation, can conveniently tailor the use wantonly is provided.
Realize the technical scheme of the purpose the utility model is a fine knitting felt preimpregnation material of polyester non-woven fabrics composite glass, including the compound carpet veneer that impregnated resin pasted and the PP thin layer of its both sides, the PP thin layer of compound carpet veneer and both sides bonds fixedly through resin paste layer respectively.
The thickness of the resin paste layer is 0.3mm to 0.8 mm.
The thickness of the PP film layer is 0.03 mm-0.05 mm.
The PP film layer is a black PP film layer.
The composite felt layer is obtained by compounding a glass fiber knitted felt and a polyester non-woven fabric.
The utility model discloses has positive effect:
(1) the utility model discloses a compound fine knitting felt preimpregnation material of polyester non-woven fabrics is glued including the middle impregnating resin compound felt that sticks up and the PP film of its both sides, is pasted by the resin between PP film and the compound felt and is connected.
In the conventional prepreg, a PE film is used as release paper, and a PP film is not suitable for being used as a separation film, so that the use of a PP film layer as a separation protective layer is never proposed. The utility model discloses a compound fine knitting felt preimpregnation material of polyester non-woven fabrics adopts the PP thin film layer as the isolation protective layer, compares in the PE thin film that tradition used, has tensile strength height, difficult fracture, can effectively prevent the volatile advantage of styrene, and the retention period is longer, and product quality is stable.
(2) For some light-cured resin pastes, to ensure the stability of the prepreg, black PP films were used to coat both sides of the resin paste impregnated composite mat.
(3) The prepreg of the polyester non-woven fabric composite glass fiber knitted felt can be used for producing products in mould pressing, pipe coiling or laminating processes after being cut, an upper layer film and a lower layer film are removed during use, the products are placed into a mould for high-temperature forming after being cut randomly, the wet operation is changed into the dry operation, the operation environment of workers can be effectively improved, and the volatilization of harmful substances in the operation environment is reduced; the method can be used in the fields of structural members such as pipeline repair, container reinforcement and the like.
Drawings
Fig. 1 is a schematic structural view of the prepreg of the polyester non-woven fabric composite glass fiber knitted felt of the present invention;
the reference numbers in the above figures are as follows: the composite felt layer comprises a composite felt layer 1, a resin paste layer 2 and a PP film layer 3.
Detailed Description
(example 1)
Referring to fig. 1, the prepreg of the polyester non-woven fabric composite glass fiber knitted felt (hereinafter referred to as composite felt) of the embodiment is of a sandwich structure, and includes a composite felt layer 1 impregnated with resin paste and PP thin film layers 3 on both sides of the composite felt layer 1, and the PP thin film layers 3 on both sides of the composite felt layer 1 are respectively bonded and fixed by resin paste layers 2.
The composite felt layer 1 in this embodiment is a composite felt impregnated with an unsaturated polyester resin paste. The composite felt layer 1 is obtained by compounding a glass fiber knitted felt and a polyester non-woven fabric. The glass fiber knitted felt is formed by cutting glass fiber direct yarns into certain lengths, arranging the glass fiber direct yarns in disorder, and then stitching and knitting the glass fiber direct yarns by using polyester stitching yarns.
The thickness of the resin paste layer 2 is 0.3mm to 0.8mm, in this example 0.5 mm.
The thickness of the PP film layer 3 is 0.03mm to 0.05mm, and in this embodiment, 0.03 mm.
The PP film layer 3 is a transparent or colored PP film layer 3. Further, for some light-cured resin pastes, in order to ensure the stability of the prepreg, the PP film layer 3 is a black PP film layer 3. In other cases, there is no limit to the color of the film.
The preparation process of the prepreg of the polyester non-woven fabric composite glass fiber knitted felt comprises the following steps:
pouring the prepared resin paste (the unsaturated polyester resin mixture added with the functional filler, the curing agent, the internal release agent, the thickening agent and the low-shrinkage additive) into an upper glue groove and a lower glue groove of a glue dipping machine, coating the resin paste on the inner surfaces of an upper PP film layer and a lower PP film layer, dipping the resin paste into a polyester non-woven fabric composite glass fiber knitted felt (composite felt) through the lower glue groove, clamping the resin paste between the upper film layer and the lower film layer coated with the resin paste, rolling the resin paste by a compaction roller, rolling the resin paste, then thickening the resin paste in a drying room, and obtaining a finished product.
The utility model discloses a compound felt preimpregnation material can be cut out the back and be arranged in mould pressing, reelpipe or lamination technology to produce goods, takes off two-layer film about during the use, puts into the mould after tailorring wantonly and carries out high temperature molding or photocuring shaping, can be used for fields such as pipeline restoration, container reinforcement.
Compare in the PE film of traditional use, the utility model discloses an adopt in the preimpregnation material structure be the PP thin layer, have tensile strength height, difficult fracture, can effectively prevent the volatile advantage of solvent in the resin paste, the preimpregnation material storage life is longer, product quality is stable.
Claims (4)
1. The utility model provides a compound fine knitted felt prepreg of glass of polyester non-woven fabrics which characterized in that: the composite felt comprises a composite felt layer (1) impregnated with resin paste and PP thin film layers (3) on two sides of the composite felt layer, wherein the composite felt layer (1) and the PP thin film layers (3) on two sides are respectively bonded and fixed through a resin paste layer (2), and the composite felt layer (1) is obtained by compounding a glass fiber knitted felt and a polyester non-woven fabric.
2. The prepreg of the polyester non-woven fabric composite glass fiber knitted felt according to claim 1, characterized in that: the thickness of the resin paste layer (2) is 0.3mm to 0.8 mm.
3. The prepreg of the polyester non-woven fabric composite glass fiber knitted felt according to claim 1, characterized in that: the thickness of the PP film layer (3) is 0.03 mm-0.05 mm.
4. The prepreg of the polyester non-woven fabric composite glass fiber knitted felt according to claim 1, characterized in that: the PP film layer (3) is a black PP film layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208495.3U CN209869612U (en) | 2018-12-26 | 2018-12-26 | Prepreg of polyester non-woven fabric composite glass fiber knitted felt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208495.3U CN209869612U (en) | 2018-12-26 | 2018-12-26 | Prepreg of polyester non-woven fabric composite glass fiber knitted felt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209869612U true CN209869612U (en) | 2019-12-31 |
Family
ID=68949783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822208495.3U Active CN209869612U (en) | 2018-12-26 | 2018-12-26 | Prepreg of polyester non-woven fabric composite glass fiber knitted felt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209869612U (en) |
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2018
- 2018-12-26 CN CN201822208495.3U patent/CN209869612U/en active Active
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