RU2148116C1 - Method of preparing fire-resistant tent material with polyvinylchloride coating - Google Patents

Abstract

FIELD: textile industry. SUBSTANCE: fire-resistant material with coating based on polyvinylchloride and antipyretic composition contains, %: antimony trioxide, 24-26; and epoxide, 9-11 is distinguished by additionally containing halogen- containing fireproofing compound: 2,2-bis(3,5-dibromo-4- hydroxyphenyl)propane (63-67%), weight ratio of polyvinylchloride to antipyretic composition ranging from 100:5 to 100:30. EFFECT: improved fire-resistant characteristics. 2 cl, 3 tbl, 6 ex

Description

 The invention relates to light industry and relates to a method for producing a fire-resistant tent material with a polyvinyl chloride coating.

 A known method of producing a multilayer fire-resistant material by applying a two-layer coating on the woven substrate based on plasticized polyvinyl chloride containing a mixture of antimony trioxide and a halogen-containing flame retardant is introduced per 100 parts by weight into the inner coating layer polyvinyl chloride 1-20 parts by weight antimony trioxide and 19-80 parts by weight halogen-containing flame retardant, and in the external - 9-29 wt.h. antimony trioxide and 1-10 parts by weight halogen-containing flame retardant (SU 963886, 1983).

 The disadvantage of this method is the presence of flame retardant migration to the surface of the product, which helps to reduce the content of flame retardants in the product, thereby reducing the fire resistance of materials during operation.

Closest to the invention is a method of obtaining a fire-resistant material, which consists in the fact that the material is coated with 100 parts by weight polyvinyl chloride (PVC), 45-52 parts by weight ester plasticizer, 4-6 parts by weight lead stabilizer, 4-9 parts by weight antimony trioxide, 10-30 wt. including aluminum hydroxide, 3-5 parts by weight aerosil and 2-4 parts by weight epoxy resin (ED-16, ED-20). The material retains its properties after exposure at 100 ^o C for 7 days (RU 2034874, 1995).

 The disadvantage of this method is the reduced fire resistance of the material due to the use of less effective flame retardants.

 An object of the invention is to obtain a tent material with a polyvinyl chloride coating of high fire resistance with no migration of the flame retardant composition.

The technical task is solved as follows:
OPTION 1
- halogen-containing flame retardant is additionally introduced into the antipyretic composition with the following content of components (wt.%):
The composition of KA-1:
2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane - 63-67
Antimony trioxide - 24-26
Epoxy Oligomer - 9-11
with a mass ratio of PVC and antipyretic composition of 100: 5-100: 30 (option 1).

OPTION 2
- halogen-containing flame retardant is additionally introduced into the antipyretic composition with the following content of components (wt.%):
The composition of KA-2:
Decabromodiphenyl oxide - 40-44
Antimony trioxide - 12-14
Aluminum hydroxide - 26-28
Epoxy Oligomer - 17-19
with a mass ratio of PVC and antipyretic composition of 100: 5-100: 30 (option 2)
The introduction of the above flame retardants in plasticized PVC helps to eliminate the migration of flame retardants to the surface of the products and increases the fire resistance of the tent material.

 The epoxy oligomer used is ED-20 epoxy resin, epoxidized soybean oil (ESM), 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane diglycidyl ether and others.

 These antipyretic compositions are added at the stage of preparation of color paste in an amount of 5-30 wt.h. per 100 wt. including polyvinyl chloride (PVC), followed by mixing the color paste with plasticized polyvinyl chloride.

 PVC coating may contain various targeted additives (pigments, stabilizers, plasticizers).

The migration of flame retardants is observed visually by the appearance of white plaque on the surface of PVC films as they age in a heating cabinet at 50 ^° C for 100 hours.

Example 1. On a polyester tent fabric on the aggregate of vinyl coatings (AHP) at a temperature of 120-160 ^o C apply double-sided polyvinyl chloride coating with a thickness of 0.15 mm at a speed of 4.5 m / min from the composition shown in table 1. Migration of flame retardant on the surface of the PVC film is missing. Flammability 0 mm / s (according to GOST 25076-81).

 Example 2. The method is carried out analogously to example 1, the amount of complex flame retardant KA-1 per 100 wt.h. PVC is 15 parts by weight There is no migration of flame retardant on the surface of PVC films. Flammability 0 mm / s (according to GOST 25076-81).

 Example 3. The method is carried out analogously to example 1, the amount of complex flame retardant KA-1 per 100 wt.h. PVC is 30 parts by weight There is no migration of flame retardant on the surface of PVC films. Flammability 0 mm / s (according to GOST 25076-81).

Example 4. On a polyester tent fabric on AHP at a temperature of 120-160 ^o C apply a double-sided PVC coating with a thickness of 0.15 mm at a speed of 4.5 m / min from the composition shown in table 2. Migration of flame retardant on the surface of PVC films is absent. Flammability 0 mm / s (according to GOST 25076-81).

 Example 5. The method is carried out analogously to example 4, the amount of complex flame retardant KA-2 per 100 wt.h. PVC is 15 parts by weight There is no migration of flame retardant on the surface of PVC films. Flammability 0 mm / s (according to GOST 25076-81).

 Example 6. The method is carried out analogously to example 1, the amount of complex flame retardant KA-2 per 100 wt.h. PVC is 30 parts by weight There is no migration of flame retardant on the surface of PVC films. Flammability 0 mm / s (according to GOST 25076-81).

The use of the proposed flame retardant compositions containing a halogen-containing flame retardant, antimony trioxide, aluminum hydroxide and an epoxy oligomer can eliminate the migration of flame retardants from the products and obtain the material:
- with a flammability of 0 mm / s according to GOST 25076-81;
- slow-burning according to GOST 12.1.044-89 p. 4.3.

The positive effect of this invention is expressed in the following:
- the range of tent materials and the scope are expanding;
- increases the fire resistance of tent materials through the use of more effective flame retardants;
- the cost of the tent material is reduced by partially replacing the halogen-containing flame retardant with a less expensive aluminum hydroxide.

 Table 3 shows the properties of the awning material produced in accordance with GOST 29151-91, with a flammability of not more than 1.66 mm / sec and the tent material with a flammability of 0 mm / sec, produced according to the proposed compositions.

Claims (2)

1. A method of obtaining a fire-resistant tent material by coating on the basis of polyvinyl chloride and a flame retardant composition, including antimony trioxide and an epoxy oligomer, characterized in that a halogen-containing flame retardant - 2,2-bis (3,5-dibromo-4-hydroxyphenyl ) -propane in the following components, wt.%:
2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane - 63 - 67
Antimony trioxide - 24 - 26
Epoxy Oligomer - 9 - 11
when the mass ratio of polyvinyl chloride and antipyrene composition equal to 100: 5 - 100: 30. 2. A method of obtaining a fire-resistant tent material by coating on the basis of polyvinyl chloride and an antipyrene composition, including antimony trioxide, aluminum hydroxide and an epoxy oligomer, characterized in that a halogen-containing flame retardant, decabromodiphenyl oxide, is additionally introduced into the antipyretic composition at the following content of components, wt.%:
Decabromodiphenyl oxide - 40 - 44
Antimony trioxide - 12-14
Aluminum hydroxide - 26 - 28
Epoxy Oligomer - 17 - 19
when the mass ratio of polyvinyl chloride and antipyrene composition equal to 100: 5 - 100: 30.

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