CN111926585A - Flame-retardant airtight tent material and preparation method thereof - Google Patents
Flame-retardant airtight tent material and preparation method thereof Download PDFInfo
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- CN111926585A CN111926585A CN202010810795.8A CN202010810795A CN111926585A CN 111926585 A CN111926585 A CN 111926585A CN 202010810795 A CN202010810795 A CN 202010810795A CN 111926585 A CN111926585 A CN 111926585A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
- D06N2209/067—Flame resistant, fire resistant
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/125—Non-permeable
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- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
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- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/125—Awnings, sunblinds
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- D06N2213/00—Others characteristics
- D06N2213/02—All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters
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Abstract
The invention discloses a flame-retardant airtight tent material and a preparation method thereof, belonging to the technical field of tent materials. The preparation method is easy to popularize and carry out industrial production, the obtained flame-retardant airtight tent material is excellent in air tightness, the lap joint can be formed by one-step welding in the subsequent processing process without reinforcement, the subsequent processing efficiency is improved, the use amount of the flame-retardant airtight tent material is greatly reduced, the cost is saved, the appearance of the prepared product is more attractive, the B-S2-d0 level can be achieved according to the standard EN13501-1, and the flame-retardant airtight tent material has a high flame-retardant function.
Description
Technical Field
The invention belongs to the technical field of tent materials, and particularly relates to a flame-retardant airtight tent material and a preparation method thereof.
Background
Common tent in the market is mostly that the support that can receive and release and canvas or tarpaulin cooperation are built and are formed, and it is very inconvenient to carry, transport, install, and will install the spud pile around the tent, need spend a large amount of time and energy when building. Compared with the tent, the inflatable tent has the advantages of portability, no support, easy installation, easy removal, strong water resistance and wind resistance and the like, so that more and more people pay more attention to the inflatable tent. The inflatable tent is roughly classified into a frame type inflatable tent and an integral type inflatable tent, the frame type inflatable tent is a type in which only a frame (an inflatable column) is inflated, the integral type inflatable tent inflates the whole tent, but whichever type of inflatable tent has an extremely high requirement on the airtightness of an inflated part material, and meanwhile, the integral type inflatable tent also needs to have a high flame retardant effect. Usually, the material of the inflatable part is PVC coating polyester interwoven fabric, and a flame-retardant layer is added between the PVC coating and the polyester interwoven fabric, so that the double effects of flame retardance and air tightness are realized. However, when the existing PVC coated polyester mixed fabric is used for manufacturing an inflatable column or other inflatable parts of an inflatable tent, it is necessary to reinforce the overlapped part (seam part) of the material, thereby improving the air tightness. However, the large reinforcement of the framework or the inflatable part affects the aesthetic appearance of the inflatable tent, and increases the consumption cost of the reinforced part, and the welding time.
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 provide a tent material which can be directly used for overlapping the inflated portion of a flame retardant inflatable tent without reinforcement.
In order to solve the technical problems, the invention adopts the technical scheme that: a preparation method of a flame-retardant airtight tent material comprises the following steps:
step 1, immersing a base cloth into a first paste agent, controlling the paste amount on two sides of the base cloth to be 30-50gsm, and then drying and cooling;
step 2, immersing the base cloth processed in the step 1 into a second paste agent, controlling the paste amount on two sides of the base cloth at 140-;
step 3, preheating the base cloth processed in the step 2, and attaching the base cloth to the preheated PVC film to attach the PVC film to two sides of the base cloth, so as to obtain the flame-retardant airtight tent material;
wherein the first paste comprises E-PVC, phosphate ester and barium zinc composite stabilizer;
the second paste comprises E-PVC, a plasticizer, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and barium-zinc composite stabilizer;
the PVC film comprises PVC powder, a plasticizer, a cold-resistant agent, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and a barium-zinc composite stabilizer.
The other technical scheme adopted by the invention is as follows: the flame-retardant airtight tent material prepared by the preparation method is provided.
The invention has the beneficial effects that: the preparation method of the flame-retardant airtight tent material provided by the invention is easy to popularize and carry out industrial production, and the prepared flame-retardant airtight tent material can ensure that the first paste can fully permeate into pores of the base cloth by improving the composition of the paste, matching with twice paste application and strictly controlling the paste application amount, so that the pores are filled, the internal leakage after inflation is reduced, a certain flame retardant property is provided, the second paste can firmly attach the base cloth to the PVC film, and good air tightness, flame retardance and peeling strength are provided for a finished product. The flame-retardant airtight tent material provided by the invention has excellent air tightness, can reach B-S2-d0 level according to the standard EN13501-1, has a high flame-retardant function, can be welded and formed at the joint in one step in the subsequent processing process, does not need to be reinforced, is beneficial to improving the subsequent processing efficiency, greatly reduces the using amount of the flame-retardant airtight tent material, saves the cost, and can be more attractive in appearance without reinforcing the joint when the prepared product is lapped.
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 invention provides a preparation method of a flame-retardant airtight tent material, which comprises the following steps:
step 1, immersing a base cloth into a first paste agent, controlling the paste amount on two sides of the base cloth to be 30-50gsm, and then drying and cooling;
step 2, immersing the base cloth processed in the step 1 into a second paste agent, controlling the paste amount on two sides of the base cloth at 140-;
step 3, preheating the base cloth processed in the step 2, and attaching the base cloth to the preheated PVC film to attach the PVC film to two sides of the base cloth, so as to obtain the flame-retardant airtight tent material;
wherein the first paste comprises E-PVC, phosphate ester and barium zinc composite stabilizer;
the second paste comprises E-PVC, a plasticizer, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and barium-zinc composite stabilizer;
the PVC film comprises PVC powder, a plasticizer, a cold-resistant agent, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and a barium-zinc composite stabilizer.
From the above description, the beneficial effects of the present invention are: the preparation method of the flame-retardant airtight tent material provided by the invention is easy to popularize and industrially produce, and the prepared flame-retardant airtight tent material can ensure that the first paste can fully permeate into the air holes of the base cloth, fill the air holes, reduce the internal leakage after inflation and provide certain flame retardant property by improving the composition of the paste in cooperation with twice pasting and strictly controlling the pasting amount, so that the second paste can firmly attach the base cloth and the PVC film, and good air tightness, flame retardance and peeling strength are provided for a finished product.
Further, the mass ratio of the E-PVC, the phosphate and the barium-zinc composite stabilizer in the first paste is 100: 60-90: 2-4.
From the above description, the first paste can fully permeate into the pores of the base fabric, fill the pores, reduce internal leakage after inflation and provide good flame retardance, and the paste applying amount of the first paste cannot be too much, otherwise the secondary paste applying effect and the subsequent attaching effect are obviously affected, and the overall material quality is affected.
Furthermore, the mass ratio of the E-PVC, the plasticizer, the magnesium hydroxide, the phosphate, the antimony trioxide powder, the decabromodiphenylethane, the zinc stannate and the barium-zinc composite stabilizer in the second paste is 100: 40-60: 10-25: 10-20: 10-18: 5-10: 8-15: 2-4.
From the above description, the paste amount on the second paste is higher than that on the first paste, the bonding fastness of the product can be provided, the first paste is matched to achieve the effect of high flame retardance, the air tightness of the product is ensured, the second paste affects the bonding fastness and the air tightness too little, the peeling strength can be improved to a certain extent by pasting, but the problem of surface bubble generation can be caused, the gram weight of each specification finished product of the airtight tent material is certain, in this case, the paste amount is increased, the thickness of a surface layer PVC film is reduced, the surface strength performance and the appearance effect can be affected, the abrasion is easier, and the air tightness performance is affected.
Further, the mass ratio of the PVC powder, the plasticizer, the cold resistant agent, the magnesium hydroxide, the phosphate, the antimony trioxide powder, the decabromodiphenylethane, the zinc stannate and the barium-zinc composite stabilizer in the PVC film is 100: 40-60: 5-10: 20-40: 5-15: 10-20: 5-10: 8-15: 2-4.
Further, the PVC film also comprises a pigment and an ultraviolet absorbent, wherein the mass ratio of the PVC powder to the pigment to the ultraviolet absorbent is 100: 2-8:0.2-1.
Further, the ultraviolet absorbent is UV-531 or UV-326.
Further, the viscosity of the first paste in the step 1 is 300-600cps, and the viscosity of the second paste in the step 2 is 1000-2000 cps.
As can be seen from the above description, the low viscosity of the paste for the first time facilitates the penetration of the paste into the base fabric, and the relatively high viscosity of the paste for the second time improves the bonding fastness and the air tightness.
Further, the drying temperature in the step 1 is 140 ℃ and the drying temperature in the step 2 is 150 ℃ and 120 ℃.
Further, the preheating temperature in the step 3 is 150-170 ℃, and the bonding temperature is 170-185 ℃.
Further, the plasticizer is diisononyl phthalate (DINP) or dioctyl terephthalate (DOTP).
Further, the cold-resistant agent is DOA or DINA.
Further, the phosphate ester is tricresyl phosphate (TCP), tris (2-chloropropyl) phosphate (TCPP), or cresyldiphenyl phosphate (CDP).
An airtight tent prepared by the preparation method of the flame-retardant airtight tent material.
From the above description, the beneficial effects of the present invention are: the flame-retardant airtight tent material provided by the invention has excellent air tightness, can reach B-S2-d0 level according to the standard EN13501-1, has a high flame-retardant function, can be welded and formed at the lap (splicing part) in the subsequent processing process without reinforcement, is beneficial to improving the subsequent processing efficiency, greatly reduces the using amount of the flame-retardant airtight tent material, saves the cost, and has a more attractive appearance.
Example 1:
a preparation method of a flame-retardant airtight tent material comprises the following steps:
step 1, adding a diluent (PVC viscosity reducer D80) with the weight of 20-40% into a first paste, adjusting the viscosity to 400cps, then immersing a polyester base cloth into the first paste, pressing the polyester base cloth through two large rollers, extruding the paste into the base cloth, scraping the surface through two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 30gsm, then drying in a 120 ℃ oven, and cooling to room temperature;
step 2, adding a diluent with the weight of 5-10% into the second paste, adjusting the viscosity to 1200cps, then soaking the polyester base cloth processed in the step 1 into the second paste, scraping the surface by two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 140gsm, then drying in an oven at 150 ℃, and cooling to room temperature;
step 3, preheating the polyester base fabric treated in the step 2 at 150 ℃, and attaching the PVC film preheated at 150 ℃ to 175 ℃ so that the PVC film is attached to two sides of the polyester base fabric to obtain the flame-retardant airtight tent material;
wherein the first paste comprises 100kg of E-PVC, 60kg of phosphate ester and 3kg of barium-zinc composite stabilizer;
the second paste comprises 100kg of E-PVC, 50kg of plasticizer, 20kg of magnesium hydroxide, 10kg of phosphate, 12kg of antimony trioxide powder, 5kg of decabromodiphenylethane, 10kg of zinc stannate and 3kg of barium-zinc composite stabilizer;
the PVC film comprises 100kg of PVC powder, 40kg of plasticizer, 6kg of cold-resistant agent, 30kg of magnesium hydroxide, 8kg of phosphate, 12kg of antimony trioxide powder, 6kg of decabromodiphenylethane, 8kg of zinc stannate and 2kg of barium-zinc composite stabilizer;
the plasticizer is DINP;
the cold-resistant agent is DOA;
the phosphate ester is TCP.
Example 2:
a preparation method of a flame-retardant airtight tent material comprises the following steps:
step 1, adding a diluent with the weight of 20-40% into a first paste, adjusting the viscosity to 300cps, then immersing a polyester base cloth into the first paste, pressing the polyester base cloth through two large rollers, extruding the paste into the base cloth, then scraping the surface through two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 40gsm, then drying in a 130 ℃ oven, and cooling to room temperature;
step 2, adding a diluent with the weight of 5-10% into the second paste, adjusting the viscosity to 1000cps, then soaking the polyester base cloth processed in the step 1 into the second paste, scraping the surface by two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 170gsm, then drying in an oven at 130 ℃, and cooling to room temperature;
step 3, preheating the polyester base fabric treated in the step 2 at 160 ℃, and attaching the polyester base fabric and the PVC film preheated at 160 ℃ at 180 ℃ to attach the PVC film to two sides of the polyester base fabric to obtain the flame-retardant airtight tent material;
wherein the first paste comprises 100kg of E-PVC, 70kg of phosphate ester and 2kg of barium-zinc composite stabilizer;
the second paste comprises 100kg of E-PVC, 45kg of plasticizer, 10kg of magnesium hydroxide, 20kg of phosphate, 15kg of antimony trioxide powder, 6kg of decabromodiphenylethane, 12kg of zinc stannate and 2kg of barium-zinc composite stabilizer;
the PVC film comprises 100kg of PVC powder, 50kg of plasticizer, 5kg of cold-resistant agent, 20kg of magnesium hydroxide, 10kg of phosphate, 10kg of antimony trioxide powder, 5kg of decabromodiphenylethane, 12kg of zinc stannate and 3kg of barium-zinc composite stabilizer;
the plasticizer is DOTP;
the cold-resistant agent is DINA;
the phosphate is TCPP.
Example 3:
a preparation method of a flame-retardant airtight tent material comprises the following steps:
step 1, adding a diluent with the weight of 20-40% into a first paste, adjusting the viscosity to 600cps, then immersing a polyester base cloth into the first paste, carrying out counter-pressing through two large rollers, extruding the paste into the base cloth, scraping the surface through two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 50gsm, then drying in a 140 ℃ oven, and cooling to room temperature;
step 2, adding a diluent with the weight of 5-10% into the second paste, adjusting the viscosity to 1800cps, then soaking the polyester base cloth processed in the step 1 into the second paste, scraping the surface by two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 160gsm, then drying in a 135 ℃ oven, and cooling to room temperature;
step 3, preheating the polyester base fabric processed in the step 2 at 170 ℃, and attaching the polyester base fabric and the PVC film preheated at 170 ℃ at 185 ℃, so that the PVC film is attached to two sides of the polyester base fabric, and the flame-retardant airtight tent material is obtained;
wherein the first paste comprises 100kg of E-PVC, 80kg of phosphate ester and 4kg of barium-zinc composite stabilizer;
the second paste comprises 100kg of E-PVC, 60kg of plasticizer, 15kg of magnesium hydroxide, 13kg of phosphate, 10kg of antimony trioxide powder, 8kg of decabromodiphenylethane, 8kg of zinc stannate and 4kg of barium-zinc composite stabilizer;
the PVC film comprises 100kg of PVC powder, 60kg of plasticizer, 10kg of cold-resistant agent, 40kg of magnesium hydroxide, 15kg of phosphate, 20kg of antimony trioxide powder, 10kg of decabromodiphenylethane, 15kg of zinc stannate, 4kg of barium-zinc composite stabilizer, 8kg of pigment and 1kg of ultraviolet absorbent UV-531;
the plasticizer is DOTP;
the cold-resistant agent is DOA;
the phosphate is CDP.
Example 4:
a preparation method of a flame-retardant airtight tent material comprises the following steps:
step 1, adding a diluent with the weight of 20-40% into a first paste, adjusting the viscosity to 500cps, then immersing a polyester base cloth into the first paste, carrying out counter-pressing through two large rollers, extruding the paste into the base cloth, scraping the surface through two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 35gsm, then drying in a 125 ℃ oven, and cooling to room temperature;
step 2, adding a diluent with the weight of 5-10% into the second paste, adjusting the viscosity to 2000cps, then soaking the polyester base cloth processed in the step 1 into the second paste, scraping the surface by two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 150gsm, then drying in an oven at 140 ℃, and cooling to room temperature;
step 3, preheating the polyester base fabric processed in the step 2 at 165 ℃, and attaching the polyester base fabric and the preheated PVC film at 165 ℃ at 185 ℃, so that the PVC film is attached to two sides of the polyester base fabric, and the flame-retardant airtight tent material is obtained;
wherein the first paste comprises 100kg of E-PVC, 90kg of phosphate ester and 3kg of barium-zinc composite stabilizer;
the second paste comprises 100kg of E-PVC, 55kg of plasticizer, 25kg of magnesium hydroxide, 15kg of phosphate, 18kg of antimony trioxide powder, 10kg of decabromodiphenylethane, 15kg of zinc stannate and 2.5kg of barium-zinc composite stabilizer;
the PVC film comprises 100kg of PVC powder, 55kg of plasticizer, 7kg of cold-resistant agent, 35kg of magnesium hydroxide, 5kg of phosphate, 14kg of antimony trioxide powder, 7kg of decabromodiphenylethane, 10kg of zinc stannate and 3.5kg of barium-zinc composite stabilizer;
the plasticizer is DINP;
the cold-resistant agent is DOA;
the phosphate ester is TCP.
Example 5:
a flame-retardant airtight tent material is prepared by the following preparation method:
step 1, adding a diluent with the weight of 20-40% into a first paste, adjusting the viscosity to 450cps, then immersing a polyester base cloth into the first paste, carrying out counter-pressing through two large rollers, extruding the paste into the base cloth, scraping the surface through two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 45gsm, then drying in a 135 ℃ oven, and cooling to room temperature;
step 2, adding a diluent with the weight of 5-10% into the second paste, adjusting the viscosity to 1500cps, then soaking the polyester base cloth processed in the step 1 into the second paste, scraping the surface by two groups of scrapers, controlling the paste amount on two sides of the base cloth to be 165gsm, then putting the base cloth into an oven at 145 ℃, drying and cooling to room temperature;
step 3, preheating the polyester base fabric processed in the step 2 at 155 ℃, and attaching the polyester base fabric and a PVC film preheated at 155 ℃ at 170 ℃, so that the PVC film is attached to two sides of the polyester base fabric, and the flame-retardant airtight tent material is obtained;
wherein the first paste comprises 100kg of E-PVC, 75kg of phosphate ester and 3.5kg of barium zinc composite stabilizer;
the second paste comprises 100kg of E-PVC, 40kg of plasticizer, 22kg of magnesium hydroxide, 18kg of phosphate, 16kg of antimony trioxide powder, 9kg of decabromodiphenylethane, 11kg of zinc stannate and 3.5kg of barium-zinc composite stabilizer;
the PVC film comprises 100kg of PVC powder, 45kg of plasticizer, 8kg of cold-resistant agent, 25kg of magnesium hydroxide, 12kg of phosphate, 16kg of antimony trioxide powder, 9kg of decabromodiphenylethane, 9kg of zinc stannate, 2.5kg of barium-zinc composite stabilizer, 2kg of pigment and 0.2kg of ultraviolet absorbent UV-531;
the plasticizer is DOTP;
the cold-resistant agent is DOA;
the phosphate is CDP.
Comparative example 1:
comparative example 1 differs from example 1 in that step 1 is not included, i.e. pasting is performed using only the second paste.
Comparative example 2:
comparative example 2 differs from example 1 in that the pasting amount in step 1 is 100 gsm.
Comparative example 3:
comparative example 3 differs from example 1 in that the pasting amount of step 2 is 250 gsm.
Comparative example 4:
comparative example 4 differs from example 1 in that the first and second pastes of comparative example 4 are each formulated identically with 100kg of E-PVC, 50kg of plasticizer, 20kg of magnesium hydroxide, 10kg of phosphate ester, 12kg of antimony trioxide powder, 5kg of decabromodiphenylethane, 10kg of zinc stannate and 3kg of barium zinc composite stabilizer.
The flame-retardant airtight tent materials obtained in examples 1 to 5 and comparative example 1 were tested according to standard EN13501-1, and the peel strength of the flame-retardant airtight tent materials obtained in examples 1 to 5 was tested, and the test results are shown in table 1.
TABLE 1
The flame-retardant airtight tent material provided by the invention can pass the European environmental protection REACH standard, the flame retardance reaches EN13501B-S2-d0 grade, and the peel strength is high.
The flame-retardant airtight tent materials obtained by the preparation methods of examples 1 and 4 and comparative examples 1 to 4 are respectively welded to form a 1.5 x 2 m cylindrical air bag, the structures and the sizes of the 5 air bags are completely the same, and the lap joint is formed by one-step welding in the preparation process without secondary width doubling (reinforcing). Then 5 air bags are inflated (the inflation pressure is 6-7PSI) and placed in the indoor open space, and the temperature of the environment is 21-34 ℃. In which the air bags of comparative examples 1 to 4 were respectively air-leaked on days 9, 12, 13 and 17 of the standing, while the air bags of example 1 and example 4 were respectively not significantly changed after 30 days of the standing, and the change in the detected air pressure was less than 0.5 psi.
In conclusion, the preparation method of the flame-retardant airtight tent material provided by the invention is easy to popularize and carry out industrial production, and the prepared flame-retardant airtight tent material can be matched with twice pasting and strictly controls the pasting amount through improving the composition of the paste, so that the first paste can be fully permeated into the pores of the base cloth, the pores are filled, the internal leakage after inflation is reduced, good flame retardance is provided, the second paste can firmly attach the base cloth to the PVC film, and good air tightness, flame retardance and peeling strength are provided for a finished product. The flame-retardant airtight tent material provided by the invention has excellent air tightness, can reach B-S2-d0 level according to the standard EN13501-1, has a high flame-retardant function, can be welded and formed at the lap (splicing part) in the subsequent processing process without reinforcement, is beneficial to improving the subsequent processing efficiency, greatly reduces the using amount of the flame-retardant airtight tent material, saves the cost, and has a more attractive appearance.
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 (10)
1. The preparation method of the flame-retardant airtight tent material is characterized by comprising the following steps of:
step 1, immersing a base cloth into a first paste agent, controlling the paste amount on two sides of the base cloth to be 30-50gsm, and then drying and cooling;
step 2, immersing the base cloth processed in the step 1 into a second paste agent, controlling the paste amount on two sides of the base cloth at 140-;
step 3, preheating the base cloth processed in the step 2, and attaching the base cloth to the preheated PVC film to attach the PVC film to two sides of the base cloth, so as to obtain the flame-retardant airtight tent material;
wherein the first paste comprises E-PVC, phosphate ester and barium zinc composite stabilizer;
the second paste comprises E-PVC, a plasticizer, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and barium-zinc composite stabilizer;
the PVC film comprises PVC powder, a plasticizer, a cold-resistant agent, magnesium hydroxide, phosphate, antimony trioxide powder, decabromodiphenylethane, zinc stannate and a barium-zinc composite stabilizer.
2. The method for preparing a flame-retardant airtight tent material according to claim 1, wherein the mass ratio of the composite stabilizer of E-PVC, phosphate ester and barium zinc in the first paste is 100: 60-90: 2-4.
3. The method for preparing a flame-retardant airtight tent material according to claim 1, wherein the mass ratio of the E-PVC, the plasticizer, the magnesium hydroxide, the phosphate, the antimony trioxide powder, the decabromodiphenylethane, the zinc stannate and the barium-zinc composite stabilizer in the second paste is 100: 40-60: 10-25: 10-20: 10-18: 5-10: 8-15: 2-4.
4. The method for preparing the flame-retardant airtight tent material according to claim 1, wherein the mass ratio of the PVC powder, the plasticizer, the cold resistant agent, the magnesium hydroxide, the phosphate ester, the antimony trioxide powder, the decabromodiphenylethane, the zinc stannate and the barium-zinc composite stabilizer in the PVC film is 100: 40-60: 5-10: 20-40: 5-15: 10-20: 5-10: 8-15: 2-4.
5. The method for preparing a flame retardant airtight tent material as claimed in claim 1, wherein the viscosity of the first paste in the step 1 is 300-600cps, and the viscosity of the second paste in the step 2 is 1000-2000 cps.
6. The method for preparing a flame-retardant airtight tent material as claimed in claim 1, wherein the temperature for drying in step 1 is 120-140 ℃ and the temperature for drying in step 2 is 130-150 ℃.
7. The method for preparing a flame-retardant airtight tent material as claimed in claim 1, wherein the preheating temperature in step 3 is 150-170 ℃ and the attaching temperature is 170-185 ℃.
8. The method of making a flame retardant airtight tent material of claim 1 wherein said plasticizer is diisononyl phthalate or dioctyl terephthalate.
9. The method of manufacturing a flame retardant airtight tent material of claim 1, wherein the phosphate ester is tricresyl phosphate, tris (2-chloropropyl) phosphate or cresyldiphenyl phosphate.
10. A flame retardant airtight tent material prepared by the method for preparing a flame retardant airtight tent material according to any one of claims 1 to 9.
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