CN111959070B - High-strength space cloth material and preparation method thereof - Google Patents

High-strength space cloth material and preparation method thereof Download PDF

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Publication number
CN111959070B
CN111959070B CN202010811026.XA CN202010811026A CN111959070B CN 111959070 B CN111959070 B CN 111959070B CN 202010811026 A CN202010811026 A CN 202010811026A CN 111959070 B CN111959070 B CN 111959070B
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space cloth
paste
corona
cloth
tpu film
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CN111959070A (en
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林生雄
何超金
蒋石生
姚兴南
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Fujian Sijia Industrial Material Co ltd
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Fujian Sijia Industrial Material Co ltd
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    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres

Abstract

The invention discloses a high-strength space cloth material and a preparation method thereof, belonging to the technical field of composite materials, wherein the preparation method comprises the steps of respectively coating PU paste on the upper surface and the lower surface of PE space cloth twice and drying, the coating amount of the PU paste is 30-60gsm each time, and the viscosity of the PU paste is 40000-50000cps; then, carrying out corona treatment on one side of the TPU film; preheating the upper surface and the lower surface of the pasted PE space cloth, and respectively attaching the upper surface and the lower surface to one surface of the TPU film subjected to corona treatment to obtain the high-strength space cloth material. The preparation method solves the problems that the TPU film is difficult to be bonded with the PE space cloth, and the peel strength after bonding does not reach the standard, and the peel strength after bonding can reach more than 150N/5cm, so that the product made of the space cloth material can bear higher air pressure, and the application field of the space cloth material is widened.

Description

High-strength space cloth material and preparation method thereof
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a high-strength space cloth material and a preparation method thereof.
Background
The space cloth is different from the mesh cloth obtained by conventional spinning and is of a 3D three-dimensional hollow structure, the base cloth of the space cloth adopts a 3D weaving technology, and the space cloth is of an integrated structure formed by connecting two layers of mesh clamping cloth covers through an upper and lower serial-parallel walking method of middle wire drawing. According to different methods of middle wire drawing, cloth cover effects with different shapes, such as W-shaped, point-shaped, straight strip-shaped and the like, can be formed. When the space cloth is used, a very stable three-dimensional space structure can be provided, and the space cloth has the advantages of stable size, smooth surface, good resilience, high specific strength and the like. The space cloth is used for preparing products such as floating plates, surfboards, canoes and the like, good air tightness is needed, the space cloth applied to the products achieves good air tightness effect by coating a special PVC air-tight coating or TPU air-tight coating on the surface of the space cloth, the coating can provide the peeling strength of more than 150N/5cm, and the possibility of delamination or burst does not need to be worried about when the space cloth is used. For example, the invention patent of China with the application number of 201810802272.1 discloses a preparation process of TPU wear-resistant space cloth, wherein preheated adhesive layer surfaces of an upper net cloth layer and a lower net cloth layer are respectively attached to TPU thin films through extrusion casting, so that the wear resistance and the bending resistance of the surface of the space cloth can be greatly improved while the air tightness of the space cloth material is ensured. Because of the special wire drawing structure of the space cloth, the film coating method of common materials (such as grid cloth and various single-layer base cloth) can not be directly applied to the space cloth, although a good film coating method with pertinence is developed aiming at the space cloth at present, the two layers of net clamping cloth surfaces of the existing space cloth are both made of polyester PET fibers, and for the space cloth made of newly developed ultrahigh molecular weight polyethylene fibers, the problems that a TPU film is difficult to be adhered to the space cloth and the peeling strength after the adhesion does not reach the standard exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: how to compound TPU film on the surface of the space cloth made of ultra-high molecular weight polyethylene fiber, and further obtain the high-strength space cloth material with good air tightness and high peel strength.
In order to solve the technical problems, the invention adopts the technical scheme that: a preparation method of a high-strength space cloth material comprises the following steps:
step 1, applying PU paste on the upper surface of the PE space cloth, applying the PU paste on the lower surface of the dried PE space cloth, applying the PU paste on the upper surface of the dried PE space cloth again, applying the PU paste on the lower surface of the dried PE space cloth again, and drying to obtain the paste-applied PE space cloth;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film;
step 3, preheating the upper surface of the pasted PE space cloth, and attaching the preheated upper surface to the corona-treated surface of the corona TPU film; preheating the lower surface of the pasted PE space cloth, and attaching the preheated lower surface to the corona TPU film surface subjected to corona treatment to obtain a high-strength space cloth material;
the solid content of the PU paste is 40-60%, the pasting amount of the PU paste each time is 30-60gsm, and the viscosity of the PU paste is 30000-50000cps.
The other technical scheme adopted by the invention is as follows: the high-strength space cloth material is prepared by the preparation method of the high-strength space cloth material.
The invention has the beneficial effects that: according to the preparation method of the high-strength space cloth material, a small amount of PU paste is pasted and dried on PE space cloth twice, and then the PE space cloth is attached with the TPU film subjected to corona treatment, so that the problems that the TPU film is difficult to attach to the PE space cloth and the peeling strength after attachment does not reach the standard are solved, the peeling strength after attachment can reach more than 150N/5cm, a product made of the obtained space cloth material can bear higher air pressure, the high-strength space cloth material can be applied to more fields and fields with higher requirements on the quality of the space cloth, and the application field of the space cloth material is widened.
Drawings
FIG. 1 is a schematic view of a part of a high strength space cloth material processing line according to the present invention;
FIG. 2 is a schematic view of a part of a high strength spatial cloth material processing line according to the present invention;
description of reference numerals: 1. a support roll; 2. a scraper; 3. an extruder; 4. a corona processor; 5. a heating mantle; 6. rubber rollers; 7. an embossing roll; 8. baking oven; 9. a TPU film; 10. and (6) PE space distribution.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
The most key concept of the invention is as follows: and (3) pasting and drying the PU paste by matching the PE space cloth for a plurality of times with proper amount, simultaneously carrying out corona treatment on the surface of the TPU film to be laminated, and laminating the TPU film on the two sides of the space cloth.
The invention provides a preparation method of a high-strength space cloth material, which comprises the following steps:
step 1, applying PU paste on the upper surface of the PE space cloth, applying the PU paste on the lower surface of the dried PE space cloth, applying the PU paste on the upper surface of the dried PE space cloth again, applying the PU paste on the lower surface of the dried PE space cloth again, and drying to obtain the paste-applied PE space cloth;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film;
step 3, preheating the upper surface of the pasted PE space cloth, and attaching the preheated upper surface to one corona-treated surface of the corona TPU film; preheating the lower surface of the PE space cloth pasted on the surface, and attaching the preheated lower surface to the corona-treated surface of the corona TPU film to obtain a high-strength space cloth material;
the solid content of the PU paste is 40-60%, the paste applying amount of the PU paste each time is 30-60gsm, and the viscosity of the PU paste is 30000-50000cps;
the PE space cloth comprises upper-layer base cloth, lower-layer base cloth and a wire drawing structure arranged between the upper-layer base cloth and the lower-layer base cloth.
The upper surface of the PE space cloth is the upper bottom surface of the upper-layer base cloth, and the lower surface of the PE space cloth is the lower bottom surface of the lower-layer base cloth.
As can be seen from the above description, the beneficial effects of the present invention are: according to the preparation method of the high-strength space cloth material, a small amount of PU paste is pasted and dried on PE space cloth twice, and then the PE space cloth is attached with the TPU film subjected to corona treatment, so that the problems that the TPU film is difficult to attach to the PE space cloth, the peeling strength after attachment is not high enough and does not reach the standard are solved, the peeling strength after attachment can reach more than 150N/5cm, a product made of the obtained space cloth material can bear higher air pressure, the preparation method can be applied to more fields and fields with higher requirements on the quality of the space cloth, and the application field of the space cloth material is widened.
Further, the drying temperature in the step 1 is 110-140 ℃.
As can be seen from the above description, a drying temperature of 110-140 ℃ facilitates rapid drying of the PU paste.
Further, the dyne value of the corona TPU film on the corona treated side in the step 2 is 38-40dyn/cm.
The description shows that the dyne value of the surface of the TPU film before corona treatment is less than 30dyn/cm, the dyne value of the corona treatment on the TPU film is 38-40dyn/cm, the effect of attaching the TPU film to space cloth can be obviously improved by matching with the improvement of a pasting process, the dyne value of the corona treatment on the TPU film is not too high, and the attaching effect cannot be obviously increased but the difficulty and the cost of treatment can be increased due to a higher dyne value.
Further, the temperature of preheating in the step 3 is 90-110 ℃.
As can be seen from the above description, preheating softens the paste to intimately adhere the TPU film together.
Further, the pressure applied in the attaching in the step 3 is 25-40kg/cm 2 。
Furthermore, the upper surface and the lower surface of the PE space cloth are both woven by ultra-high molecular weight polyethylene (UHMWPE) fibers. When the drawn fineness in the middle of the PE space cloth is 1000D, the tensile strength is more than 7000N/5cm, and the tear strength is more than 1600N; and when the traditional PET space cloth has the drawing fineness of 1000D, the tensile strength is 3200-3800N/5cm, and the tear is 500-600N.
Further, the preparation method of the high-strength space cloth material specifically comprises the following steps:
step 1, coating PU paste on the upper surface of PE space cloth, coating PU paste on the lower surface of the PE space cloth after drying at 110-140 ℃, coating PU paste again on the upper surface of the PE space cloth after drying at 110-140 ℃, coating PU paste again on the lower surface of the PE space cloth after drying at 110-140 ℃, and drying at 110-140 ℃ to obtain the paste-coated PE space cloth; the solid content of the PU paste is 40-60%, and the pasting amount of the PU paste is 30-60gsm each time;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film;
step 3, preheating the upper surface of the pasted PE space cloth at 90-110 ℃, and pressing and attaching the upper surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, wherein the side, which is not subjected to corona treatment, of the corona TPU film is contacted with an embossing roller during pressing and attaching, and the lower surface of the pasted PE space cloth is contacted with a rubber roller;
preheating the lower surface of the pasted PE space cloth at 90-110 ℃, pressing and attaching the lower surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, contacting one side, which is not subjected to corona treatment, of the corona TPU film with an embossing roller during pressing and attaching, and contacting the upper surface of the pasted PE space cloth with a rubber roller to obtain a high-strength space cloth material;
wherein, when the pressure application is carried out, the applied pressure is 25-40kg/cm 2 ；
The rubber roll and the embossing roller are arranged oppositely, a heating cover is arranged on the opposite side of one side, opposite to the side where the rubber roll and the embossing roller are arranged oppositely, and the heating cover is arranged above the rubber roll in an inclined mode.
The high-strength space cloth material prepared by the preparation method of the high-strength space cloth material.
Example 1:
a preparation method of a high-strength space cloth material specifically comprises the following steps:
step 1, coating PU paste on the upper surface of PE space cloth, coating PU paste on the lower surface of the PE space cloth after being dried at 130 ℃, coating PU paste on the upper surface of the PE space cloth again after being dried at 130 ℃, coating PU paste on the lower surface of the PE space cloth again after being dried at 130 ℃, and drying at 130 ℃ to obtain the paste-coated PE space cloth;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film, wherein the dyne value of the corona treated surface of the corona TPU film is 38dyn/cm;
step 3, preheating the upper surface of the pasted PE space cloth at 110 ℃, and pressing and attaching the upper surface of the pasted PE space cloth and the corona TPU film on the corona-treated surface, wherein the applied pressure is 30kg/cm 2 (ii) a Preheating the lower surface of the PE space cloth pasted on the surface of the PE space cloth at 110 ℃, and pressing and attaching the lower surface of the PE space cloth to the corona-treated surface of the corona TPU film, wherein the applied pressure is 30kg/cm 2 Obtaining a high-strength space cloth material;
the solid content of the PU paste is 55%, the paste applying amount of one side of the PU paste is 45gsm, the viscosity of the PU paste on the upper surface and the lower surface for the first time is 40000cps, and the viscosity of the PU paste on the lower surface for the second time is 50000cps;
the upper surface and the lower surface of the PE space cloth are both woven by ultra-high molecular weight polyethylene fibers.
Example 2:
the high-strength space cloth material is prepared by the following preparation method of the high-strength space cloth material, and the preparation method of the high-strength space cloth material specifically comprises the following steps:
step 1, coating PU paste on the upper surface of PE space cloth, coating the PU paste on the lower surface of the PE space cloth after drying at 110 ℃, coating the PU paste on the upper surface of the PE space cloth after drying at 110 ℃, coating the PU paste on the lower surface of the PE space cloth after drying at 110 ℃, and drying at 110 ℃ to obtain the PE space cloth coated with paste;
step 2, carrying out corona treatment on one surface of the TPU film to obtain a corona TPU film, wherein the dyne value of the corona treated surface of the corona TPU film is 40dyn/cm;
step 3, preheating the upper surface of the pasted PE space cloth at 90 ℃, and pressing and attaching the upper surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, wherein the applied pressure is 25kg/cm 2 (ii) a Then preheating the lower surface of the pasted PE space cloth at 90 ℃, and pressing and attaching the PE space cloth and the corona TPU film on the corona-treated surface, wherein the applied pressure is 25kg/cm 2 Obtaining a high-strength space cloth material;
the solid content of the PU paste is 60 percent, the paste applying amount of one side of the PU paste is 30gsm each time, the viscosity of the PU paste on the upper surface and the lower surface for the first time is 30000cps, and the viscosity of the PU paste on the upper surface and the lower surface for the second time is 40000cps;
the upper surface and the lower surface of the PE space cloth are both woven by ultra-high molecular weight polyethylene fibers.
Example 3:
a preparation method of a high-strength space cloth material specifically comprises the following steps:
step 1, coating PU paste on the upper surface of PE space cloth, coating the PU paste on the lower surface of the PE space cloth after drying at 140 ℃, coating the PU paste on the upper surface of the PE space cloth again after drying at 140 ℃, coating the PU paste on the lower surface of the PE space cloth again after drying at 140 ℃, and drying at 140 ℃ to obtain the paste-coated PE space cloth; the solid content of the PU paste is 50 percent, the paste applying amount of one side of the PU paste is 60gsm each time, the viscosity of the PU paste on the upper surface and the lower surface for the first time is 35000cps, and the viscosity of the PU paste on the upper surface and the lower surface for the second time is 45000cps;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film, wherein the dyne value of the corona treated surface of the corona TPU film is 39dyn/cm;
step 3, preheating the upper surface of the pasted PE space cloth at 100 ℃, and pressing and attaching the upper surface of the pasted PE space cloth and one surface of the corona TPU film subjected to corona treatment, wherein the side, which is not subjected to corona treatment, of the corona TPU film is contacted with an embossing roller during pressing and attaching, and the lower surface of the pasted PE space cloth is contacted with a rubber roller;
preheating the lower surface of the pasted PE space cloth at 100 ℃, and pressing and attaching the lower surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, wherein the side, which is not subjected to corona treatment, of the corona TPU film is contacted with an embossing roller during pressing and attaching, and the upper surface of the pasted PE space cloth is contacted with a rubber roller, so that a high-strength space cloth material is obtained;
wherein, when the pressure application is carried out, the applied pressure is 40kg/cm 2 ；
The rubber roll and the embossing roller are arranged oppositely, and a heating cover is arranged on the opposite side of one side, opposite to the embossing roller, of the rubber roll.
Example 4:
a preparation method of a high-strength space cloth material is prepared by a processing line of the high-strength space cloth material, and specifically comprises the following steps:
step 1, applying PU paste to the upper surface of the PE space cloth 10 through a paste applying device, applying the PU paste to the lower surface of the PE space cloth 10 through the paste applying device after being dried at 130 ℃ in an oven 8, applying the PU paste to the upper surface of the PE space cloth 10 through the paste applying device again after being dried at 130 ℃ in the oven 8, applying the PU paste to the lower surface of the PE space cloth 10 through the paste applying device again after being dried at 130 ℃ in the oven 8, and drying at 130 ℃ to obtain the paste applying PE space cloth 10;
step 2, carrying out corona treatment on one surface of the TPU thin film 9 prepared by the extruder 3 through a corona treatment machine 4 to obtain a corona TPU thin film, wherein the dyne value of the corona treated surface of the corona TPU thin film is 38dyn/cm;
step 3, the upper surface of the PE space cloth 10 is pasted towards the heating cover 5 and is transmitted to the laminating machine, the corona TPU film is transmitted to the laminating machine, the laminating machine comprises a rubber roller 6 and an embossing roller 7 which are arranged oppositely, the corona TPU film is subjected to corona treatment, the surface of the corona TPU film and the upper surface of the PE space cloth 10 are pasted on the laminating machine to realize pressurization laminating, and the applied pressure is 25kg/cm 2 When in pressure fitting, one side of the corona TPU film which is not subjected to corona treatment is contacted with the embossing roller 7, and the upper surface of the pasted PE space cloth 10 is contacted with the rubber roller 6;
then the lower surface of the pasted PE space cloth 10 faces the heating cover 5 and is conveyed to a laminating machine, the corona TPU film is conveyed to the laminating machine, the surface of the corona TPU film subjected to corona treatment and the lower surface of the pasted PE space cloth 10 are pressed and laminated at the laminating machine, and the applied pressure is 25kg/cm 2 When in pressure fitting, one side of the corona TPU film which is not subjected to corona treatment is contacted with the embossing roller 7, and the lower surface of the pasted PE space cloth 10 is contacted with the rubber roller 6, so that a high-strength space cloth material is obtained;
wherein the heating temperature of the heating cover 5 is 90 ℃, and the applied pressure is 40kg/cm2 when the pressing and the attaching are carried out;
the processing line comprises a pasting device, an extruder 3, a corona processor 4, a heating cover 5, a laminating machine and an oven 8;
the pasting device comprises a supporting roller 1 and a scraper 2 arranged above the supporting roller 1, PE space cloth 10 is supported by the supporting roller 1 and is conveyed forwards, and the scraper 2 pastes the PE space cloth 10;
the oven 8 is arranged at the discharge end of the paste feeding device; the extruder 3 is arranged above the laminating machine, and the opposite side of one side, opposite to the embossing roller 7, of the rubber roller 6 is provided with the heating cover 5.
Comparative example 1:
comparative example 1 differs from example 1 only in step 1, which is: PU paste is coated on the upper surface of the PE space cloth, the PU paste is coated on the lower surface of the PE space cloth after the PE space cloth is dried at 130 ℃, and the paste-coated PE space cloth is obtained after the PE space cloth is dried at 130 ℃; the PU paste used was the same as in example 1, except that the amount of paste applied to one side of the PU paste was 90gsm.
Comparative example 2:
comparative example 2 differs from comparative example 1 only in that the PU paste was applied in an amount of 120gsm per time on one side.
Comparative example 3:
comparative example 3 differs from example 1 only in that comparative example 3 does not have step 2, i.e. the TPU film of comparative example 3 is not corona treated.
Comparative example 4:
comparative example 4 differs from example 1 only in that comparative example 4 uses E-PVC paste instead of PU paste.
The space cloth materials obtained in examples 1-3 and comparative examples 1-3 were tested for peel strength, the peel strength of examples 1-3 was 162N/5cm, 155N/5cm and 176N/5cm, the peel strength of comparative example 3 was 118N/5cm, the production of comparative example 1 was difficult, the paste was sticky, and comparative examples 2 and 4 could not be bonded to complete the production.
In summary, according to the preparation method of the high-strength space cloth material provided by the invention, the upper surface and the lower surface of the PE space cloth are respectively pasted and dried twice with a small amount of PU paste with the viscosity of 40000-50000cps, and then are laminated with the TPU film subjected to corona treatment, so that the problems that the TPU film is difficult to be laminated with the PE space cloth and the peeling strength after lamination does not reach the standard are solved, the preheating temperature is further accurately controlled, the laminating pressure enables the peeling strength of the laminated space cloth to reach more than 150N/5cm, products made of the space cloth material can bear higher air pressure through further control, the preparation method can be applied to more fields and fields with higher requirements on the quality of the space cloth, and the application field of the space cloth material is widened.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.

Claims (3)

1. The preparation method of the high-strength space cloth material is characterized by comprising the following steps of:
step 1, applying PU paste on the upper surface of the PE space cloth, applying the PU paste on the lower surface of the dried PE space cloth, applying the PU paste on the upper surface of the dried PE space cloth again, applying the PU paste on the lower surface of the dried PE space cloth again, and drying to obtain the paste-applied PE space cloth; the drying temperature is 110-140 ℃;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film, wherein the dyne value of the corona TPU film subjected to corona treatment is 38-40dyn/cm;
step 3, preheating the upper surface of the pasted PE space cloth, and attaching the preheated upper surface to the corona-treated surface of the corona TPU film; preheating the lower surface of the pasted PE space cloth, and attaching the preheated lower surface to the corona TPU film surface subjected to corona treatment to obtain a high-strength space cloth material; the preheating temperature is 90-110 ℃; the pressure applied during the bonding is 25-40kg/cm 2 ；
The solid content of the PU paste is 40-60%, the pasting amount of the PU paste each time is 30-60gsm, and the viscosity of the PU paste is 40000-50000cps;
the upper surface and the lower surface of the PE space cloth are both woven by ultra-high molecular weight polyethylene fibers; the PE space cloth comprises an upper layer of base cloth, a lower layer of base cloth and a wiredrawing structure arranged between the upper layer of base cloth and the lower layer of base cloth;
the peel strength of the high-strength space cloth material can reach more than 150N/5 cm.
2. The preparation method of the high-strength space cloth material according to claim 1, which is characterized by comprising the following steps:
step 1, coating PU paste on the upper surface of PE space cloth, coating PU paste on the lower surface of the PE space cloth after drying at 110-140 ℃, coating PU paste again on the upper surface of the PE space cloth after drying at 110-140 ℃, coating PU paste again on the lower surface of the PE space cloth after drying at 110-140 ℃, and drying at 110-140 ℃ to obtain the paste-coated PE space cloth; the solid content of the PU paste is 50-60%, and the pasting amount of the PU paste is 30-60gsm each time;
step 2, performing corona treatment on one surface of the TPU film to obtain a corona TPU film;
step 3, preheating the upper surface of the pasted PE space cloth at 90-110 ℃, and pressing and attaching the upper surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, wherein the side, which is not subjected to corona treatment, of the corona TPU film is contacted with an embossing roller during pressing and attaching, and the lower surface of the pasted PE space cloth is contacted with a rubber roller;
preheating the lower surface of the pasted PE space cloth at 90-110 ℃, pressing and attaching the lower surface of the pasted PE space cloth to one surface of the corona TPU film subjected to corona treatment, contacting one side, which is not subjected to corona treatment, of the corona TPU film with an embossing roller during pressing and attaching, and contacting the upper surface of the pasted PE space cloth with a rubber roller to obtain a high-strength space cloth material;
wherein, when the pressure application is carried out, the applied pressure is 25-40kg/cm 2 ；
The rubber roll is arranged opposite to the embossing roller, and a heating cover is arranged on the opposite side of one side, opposite to the embossing roller, of the rubber roll.
3. A high-strength space cloth material prepared by the method for preparing a high-strength space cloth material according to any one of claims 1 to 2.
CN202010811026.XA 2020-08-13 2020-08-13 High-strength space cloth material and preparation method thereof Active CN111959070B (en)

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