CN216139547U - Laminated tube - Google Patents
Laminated tube Download PDFInfo
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- CN216139547U CN216139547U CN202121480395.1U CN202121480395U CN216139547U CN 216139547 U CN216139547 U CN 216139547U CN 202121480395 U CN202121480395 U CN 202121480395U CN 216139547 U CN216139547 U CN 216139547U
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- glass cloth
- cloth layer
- cotton
- layer
- glass
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Abstract
The utility model discloses a laminating pipe, which is a tubular insulating material taking glass cloth and cotton cloth as base materials, and comprises a rolled cotton cloth layer and a glass cloth layer rolled outside the cotton cloth layer, wherein an epoxy resin adhesive is arranged between the cotton cloth layer and the glass cloth layer, so that the requirement of the application field that the internal friction resistance is required and the strength requirement reaches the mechanical strength requirement of glass fiber reinforced plastics can be met.
Description
Technical Field
The utility model belongs to the technical field of laminated tubes, and particularly relates to a laminated tube.
Background
The laminated pipe product is a cylindrical product which is formed by continuously winding semi-solidified sheet-shaped gummed paper and cloth on an iron mould, solidifying and molding at high temperature and separating the product from the mould after molding. At present, the production of tubular insulating materials usually adopts a base material to complete the rolling of the tube, and the laminated tube taking glass cloth as the base material has excellent mechanical strength and electrical property; the laminated tube using the desized cotton cloth as the substrate has good wear resistance and oil resistance; however, in the actual production process of combining two substrates to prepare the laminated tube, the problems of different shrinkage rates and bonding of the bonding parts when the glass cloth and the cotton cloth are rolled exist, and the product is easy to shrink and crack.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a laminating pipe which is a tubular insulating material taking glass cloth and cotton cloth as base materials and can meet the requirements of internal friction resistance and strength of the glass fiber reinforced plastic in the application field.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the laminating pipe comprises a rolled cotton cloth layer and a glass cloth layer rolled outside the cotton cloth layer, wherein one end of the glass cloth layer is superposed with the cotton cloth layer, and the superposed glass cloth layer is laminated in the cotton cloth layer; and a glass cloth substrate is also wound outside the glass cloth layer, and one end of the glass cloth substrate is pressed and connected below the glass cloth layer.
Further, the length of the glass cloth layer is at least the length of the circumference of the current pipe.
Furthermore, the glass cloth layer is rolled outside the cotton cloth layer for a circle.
Furthermore, an epoxy resin adhesive is arranged between the cotton cloth layer and the glass cloth layer; and epoxy resin adhesive is coated on the glass cloth substrate in a brush coating manner.
Further, the epoxy resin adhesive comprises the following components in parts by weight: 100 parts of CYD128 epoxy resin, 80 parts of methyltetrahydrophthalic anhydride and four thousandths of benzylamine of CYD128 epoxy resin.
Further, the thickness of the wound cotton cloth layer is larger than the sum of the thicknesses of the glass cloth layer and the glass cloth substrate.
Furthermore, the glass cloth layer and the glass cloth substrate are made of the same material.
The preparation method of the laminated tube of the utility model, roll the cotton layer to the required thickness at first; brushing epoxy resin adhesive on the surface of the cotton cloth layer, and brushing epoxy resin adhesive on the glass cloth layer; and (3) uncovering a part of the broken end of the cotton cloth layer, lapping one end of the glass cloth layer after glue brushing into the cotton cloth layer, rolling the glass cloth substrate after glue brushing is rolled for a circle, jointing the joint, and normally lapping the glass cloth substrate to be rolled to the required thickness.
Further, the length of the glass cloth layer is at least the length of the circumference of the current pipe.
Further, the rolling time is 2-3 min.
Further, a curing process is further arranged after the rolling is finished, and the curing process specifically comprises the following steps: 50 ℃/2h +80 ℃/2h +90 ℃/3h +120 ℃/3h +135 ℃/7 h.
And further, removing the tube after the curing process is finished, and processing the end face.
Compared with the prior art, the laminated tube has at least the following beneficial effects that the laminated tube designed by the utility model develops the laminated tube insulating material made of the composite material by combining two materials, and meets the performance requirements of wear-resistant inner wall and high mechanical strength of the whole tube; in addition, the product combining the advantages of the glass cloth and the cotton cloth is produced by compounding the two materials to meet the use requirement, the epoxy resin adhesive is creatively provided, the problems of different shrinkage rates of the two products and interlayer bonding of the combined parts are solved, the product is prevented from cracking, and the production of the double-bottom material product is completed.
Furthermore, in the lapping process, a layer of glass cloth is firstly used, the two materials are tightly contacted by rolling, and then the glass cloth is pressed and connected, so that the stable close contact between the glass cloth and the cotton cloth layer can be ensured in the subsequent curing process, and the cotton cloth layer is not easy to crack; because the two materials are different and are easy to crack, the operation of the utility model can more compactly realize the bonding between the two materials.
Further, the glass cloth substrate overlapping the cotton cloth layer is preferably just one turn rigid, and if it is shorter, the gap is easy to crack.
Furthermore, by arranging more curing levels, the shrinkage rates of the two materials can be converged better; in addition, the utility model also ensures good adhesiveness of the epoxy resin adhesive by controlling the rolling temperature according to the resin characteristics.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and the detailed description.
As shown in fig. 1, the laminated tube of the present invention includes a rolled cotton cloth layer and a glass cloth layer rolled outside the cotton cloth layer, wherein an epoxy resin adhesive is disposed between the cotton cloth layer and the glass cloth layer, one end of the glass cloth layer is overlapped with the cotton cloth layer, and the overlapped glass cloth layer is pressed in the cotton cloth layer; the glass cloth layer is also wrapped with a glass cloth substrate, one end of the glass cloth substrate is pressed under the glass cloth layer, and the glass cloth substrate is coated with an epoxy resin adhesive in a brush mode.
In a specific embodiment of the present invention, the epoxy resin adhesive comprises the following components in parts by mass: 100 parts of CYD128 epoxy resin, 80 parts of methyltetrahydrophthalic anhydride and four thousandths of benzylamine of CYD128 epoxy resin.
In a preferred embodiment, the glass cloth layer is wrapped around the cotton layer for one circle, and the glass cloth substrate overlapped with the cotton layer is preferably just one circle, if shorter, the gap is easy to crack.
In one embodiment of the present invention, the process for preparing the laminated tube is as follows:
firstly, rolling cotton cloth and coating adhesive plaster;
preparing epoxy resin adhesive;
thirdly, brushing epoxy resin adhesive on the surface of the glass cloth which is cut to be larger than the perimeter of the cotton cloth pipe;
fourthly, brushing epoxy resin adhesive on the surface of the cotton cloth pipe;
overlapping the glass cloth coated with the glue into a cotton cloth tube, rolling for a circle, and rolling for 2-3 min;
sixthly, lapping glass cloth base upper adhesive cloth at the interface, and normally rolling the glass cloth base upper adhesive cloth to the required thickness of the product;
and setting a curing process: 50 ℃/2h +80 ℃/2h +90 ℃/3h +120 ℃/3h +135 ℃/7 h;
eighthly, removing the tube and processing an end face.
The preparation process of the laminated tube comprises the following steps of firstly, lapping a glass cloth and a cotton cloth to produce the laminated tube, and firstly rolling the cotton cloth to the required thickness according to the use requirement of a user; brushing epoxy resin adhesive on the surface of a cotton cloth layer, and brushing the epoxy resin adhesive on a glass cloth substrate with the length of the circumference of the current pipe; and (3) uncovering a part of the broken end of the cotton cloth layer, overlapping the glass cloth layer coated with the glue, rolling, and controlling the rolling temperature according to the resin characteristics to ensure that the epoxy resin adhesive has good adhesiveness. Rolling the glass cloth substrate brushed with the glue for one circle for 2-3min, connecting joints, rolling the glass cloth substrate in a normal lap joint manner to the required thickness; still include the solidification technology, for reducing the deviation of two kinds of material shrinkage rates, do in order to adjust on the product solidification technology, increase low temperature curing time, curing time is: 50 ℃/2h +80 ℃/2h +90 ℃/3h +120 ℃/3h +135 ℃/7 h.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (6)
1. A laminated tube is characterized by comprising a rolled cotton cloth layer and a glass cloth layer rolled outside the cotton cloth layer, wherein one end of the glass cloth layer is superposed with the cotton cloth layer, and the superposed glass cloth layer is pressed in the cotton cloth layer; and a glass cloth substrate is also wound outside the glass cloth layer, and one end of the glass cloth substrate is pressed and connected below the glass cloth layer.
2. A laminated tube according to claim 1 wherein the length of said glass cloth layer is at least the current tube circumference length.
3. A laminated tube according to claim 1 wherein the glass cloth layer is wrapped around the cotton layer for one revolution.
4. The laminate tube of claim 1 wherein an epoxy adhesive is disposed between said cotton cloth layer and said glass cloth layer; and epoxy resin adhesive is coated on the glass cloth substrate in a brush coating manner.
5. A laminate tube according to claim 1 wherein the thickness of the cotton layer after winding is greater than the sum of the thicknesses of the glass cloth layer and the glass cloth substrate.
6. A laminate tube according to claim 1 wherein the glass cloth layer is of the same material as the glass cloth substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480395.1U CN216139547U (en) | 2021-06-29 | 2021-06-29 | Laminated tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480395.1U CN216139547U (en) | 2021-06-29 | 2021-06-29 | Laminated tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216139547U true CN216139547U (en) | 2022-03-29 |
Family
ID=80802679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121480395.1U Active CN216139547U (en) | 2021-06-29 | 2021-06-29 | Laminated tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216139547U (en) |
-
2021
- 2021-06-29 CN CN202121480395.1U patent/CN216139547U/en active Active
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