CN116063732A - Halogen-free flame retardant liquid and application thereof - Google Patents

Halogen-free flame retardant liquid and application thereof Download PDF

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Publication number
CN116063732A
CN116063732A CN202211689607.6A CN202211689607A CN116063732A CN 116063732 A CN116063732 A CN 116063732A CN 202211689607 A CN202211689607 A CN 202211689607A CN 116063732 A CN116063732 A CN 116063732A
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parts
flame retardant
halogen
water
free flame
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罗典
岳杰
何达
何航
左翔
程柯
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Lier Chemical Co Ltd
Guangan Lier Chemical Co Ltd
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Lier Chemical Co Ltd
Guangan Lier Chemical Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36After-treatment
    • C08J9/40Impregnation
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00Fireproofing materials
    • C09K21/06Organic materials
    • C09K21/12Organic materials containing phosphorus
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03Non-macromolecular organic compounds
    • D21H17/05Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/10Phosphorus-containing compounds
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/34Ignifugeants
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • C08K5/51Phosphorus bound to oxygen
    • C08K5/53Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5313Phosphinic compounds, e.g. R2=P(:O)OR'

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to a preparation method and application of halogen-free flame-retardant liquid, and provides halogen-free flame-retardant liquid, which comprises zinc methylethyl phosphinate, water, an aqueous thickener and/or a water-soluble surfactant, and is prepared from the following components in parts by weight: 0-5 parts of water-based thickener, 0-3 parts of water-soluble surfactant, 2-9 parts of methyl ethyl zinc hypophosphite flame retardant and 100 parts of water. The halogen-free flame retardant liquid provided by the invention solves the problems of low thermal stability, poor environmental friendliness, large influence on products, poor water solubility and the like of a flame retardant in the prior art, has the advantage of small dosage, and has potential economic value.

Description

Halogen-free flame retardant liquid and application thereof
The application is a divisional application of application No. 202010454434.4, 26 months in 2020, and the application name is halogen-free flame retardant liquid and application thereof.
Technical Field
The invention relates to a preparation method and application of halogen-free flame retardant liquid.
Background
Most of materials contacted in daily life are combustible substances such as wood products, fibers, cotton, hemp, wool, paper and the like, and most of the materials are not subjected to flame retardant treatment, so that great fire hazards exist, and personal casualties and property loss can be caused once the fire occurs. To prevent fire, various flame retardant products are continuously being developed. At present, halogen-based flame retardants, namely brominated and chlorinated flame retardant products, are widely used, but such flame retardants have great drawbacks: the ultraviolet resistance stability of the flame-retardant base material is reduced, and more smoke, corrosive gas and toxic gas are generated when the flame-retardant base material burns, so that the pollution and harm to the surrounding environment are caused. Based on this, development and research of halogen-free flame retardants are gradually being turned to obtain environmental safety and use safety, and are nontoxic and harmless. From the aspect of morphology, the halogen-free flame retardant comprises solid powder, resin, water emulsion, water base and the like, wherein the water base product has the advantages of convenient use, low cost and easy adhesion, can be sprayed on the surface of the product, can fully absorb the flame retardant liquid through soaking, and has very convenient flame retardant treatment.
The traditional water-based flame-retardant product mainly comprises a foaming type product, which comprises the following three components: 1) An acid source; 2) A carbon source; 3) And (5) an air source. The biggest problems with conventional water-based flame retardants are: most of the substances are not water-soluble, so that dispersing agents and anti-settling agents have to be added, so that the surface of the treated product is opaque, precipitation and crystallization are serious, the surface quality of the product is greatly influenced, and the hygroscopicity of some components is serious, so that the mechanical property of the product is greatly influenced; in addition, some components are not degradable, and bring harm to the ecological environment. Meanwhile, the flame retardant liquid prepared by using the small molecules has poor thermal stability, and the flame retardant can be decomposed and destroyed at a lower temperature. Poor thermal stability, decomposition is destroyed at lower temperatures; the water solubility of the effective components is extremely poor, and a dispersing agent and an anti-settling agent are added for treatment; the hygroscopicity of part of the components is serious, and the mechanical property of the product is greatly influenced; part of the components are not degradable, and bring harm to the ecological environment; the obtained traditional water-based flame-retardant product also has the problems of extremely poor surface transparency and serious crystallization.
Therefore, there is a need to develop a water-soluble flame retardant which has high thermal stability, is environmentally friendly, has little influence on the product and has a small amount of use.
Disclosure of Invention
(one) solving the technical problems
In the prior art, the flame retardant has the defects of low thermal stability, poor environmental friendliness, large influence on products, poor water solubility and the like, and the halogen-free flame retardant liquid provided by the invention is a water-soluble flame retardant with high thermal stability, environmental friendliness, small influence on products and small dosage.
(II) technical scheme
In order to achieve the purposes of low cost, simple method and excellent performance:
in one aspect, the present invention provides the following technical solutions: a halogen-free flame-retardant liquid, which comprises zinc methylethyl hypophosphite and water. Alkyl phosphinates are a kind of dialkyl halogen-free flame retardant, have good thermal stability and flame retardance, and generally, alkyl phosphinates have no water solubility. In the application, when the alkyl hypophosphite is zinc methylethyl hypophosphite, the water-soluble flame retardant prepared from zinc methylethyl hypophosphite has good water solubility, excellent heat stability and flame retardant property, and good smoke suppression property.
The halogen-free flame retardant liquid also comprises an aqueous thickener and/or a water-soluble surfactant.
The halogen-free flame retardant liquid comprises the following components in parts by weight:
0-5 parts of water-based thickener, 0-3 parts of water-soluble surfactant, 2-9 parts of methyl ethyl zinc hypophosphite flame retardant and 100 parts of water.
The term "thickener" is a substance that increases the viscosity of latex, liquids, and can increase the viscosity of a system, maintain a uniform and stable suspension or emulsion, or form a gel, most thickeners having an emulsifying effect. There are many materials that can be used as thickeners, and most commonly used are about 40 kinds of thickeners, and the aqueous thickener is used in the present invention.
Preferably, the aqueous thickener is at least one of xanthan gum, water-soluble polyacrylate and hydroxyethyl cellulose. It will be appreciated that other suitable thickeners than those listed herein can be selected by those skilled in the art as desired and are within the scope of the invention.
The term "surfactant" refers to a substance added in small amounts to cause a significant change in the interfacial state of the solution system. Has immobilized hydrophilic and lipophilic groups, and can be oriented on the surface of the solution. The molecular structure of the surfactant has amphipathy: one end is hydrophilic group, and the other end is hydrophobic group; the hydrophilic group is usually a polar group such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amine group and salts thereof, and hydroxyl group, amide group, ether bond and the like can also be used as the polar hydrophilic group; while hydrophobic groups are often nonpolar hydrocarbon chains, such as hydrocarbon chains of more than 8 carbon atoms.
Preferably, the water-soluble surfactant is at least one of triphenyl phenol polyoxyethylene ether (602 #), dioctyl sodium sulfosuccinate (quick-setting T), adipic acid polyester (W-1640), glycerol stearate (MSD-608), silane coupling agent (KH 550), sodium dodecyl sulfate (K12) and sodium alkyl naphthalene sulfonate (BX). It will be appreciated that other suitable surfactants than those listed herein can be selected by those skilled in the art as desired and are within the scope of the invention.
Preferably, the halogen-free flame retardant liquid further comprises 0-0.2 part of a color fixing agent and 0-1 part of a colorant.
The term "fixing agent" is one of the important auxiliary agents in the printing and dyeing industry, and can be used for improving the color wet-fastness of the dye on the fabric. Insoluble colored materials can be formed on the fabric with the dye, so that the washing fastness and perspiration fastness of the color are improved, and the light fastness of the fabric can be improved in some cases.
In the present invention, preferably, the fixing agent is a water-soluble fixing agent. It should be understood that one skilled in the art can select an appropriate water-soluble fixing agent as desired while remaining within the scope of the present invention.
For the term "colorant," any substance that can cause the substance to appear to the design requiring color is referred to as a colorant. It may be organic or inorganic and may be natural or synthetic.
In the present invention, preferably, the colorant is ink, color paste or pigment. It should be understood that one skilled in the art can select the appropriate colorant as desired and within the scope of the present invention.
Preferably, the halogen-free flame retardant liquid comprises 1.5 parts by weight of xanthan gum, 1 part by weight of glycerol stearate (MSD-608), 5 parts by weight of zinc methylethyl hypophosphite and 100 parts by weight of water.
Preferably, the halogen-free flame retardant liquid comprises 1.5 parts of xanthan gum, 1 part of dioctyl sodium sulfosuccinate (anhydrous fast T), 5 parts of zinc methylethyl hypophosphite and 100 parts of water according to the weight ratio.
Preferably, the halogen-free flame retardant liquid comprises 1.5 parts by weight of xanthan gum, 1 part by weight of glycerol stearate (MSD-608), 4 parts by weight of zinc methylethyl hypophosphite and 100 parts by weight of water.
Preferably, the halogen-free flame retardant liquid comprises 1.5 parts by weight of xanthan gum, 1 part by weight of glycerol stearate (MSD-608), 3 parts by weight of zinc methylethyl hypophosphite and 100 parts by weight of water.
Preferably, the halogen-free flame retardant liquid comprises 0.5 part by weight of triphenyl phenol polyoxyethylene ether, 6 parts by weight of zinc methylethyl hypophosphite and 100 parts by weight of water.
Preferably, the halogen-free flame retardant liquid comprises 0.5 part by weight of triphenyl phenol polyoxyethylene ether, 10 parts by weight of zinc methylethyl hypophosphite and 100 parts by weight of water.
In another aspect, the present invention provides a flame retardant material obtained by treating a base material with the halogen-free flame retardant liquid described above.
Preferably, the matrix material is preferably selected from open cell sponge, polyethylene foam or paper.
Preferably, the process comprises the steps of:
(1) Treating the base material by using halogen-free flame retardant liquid in a dipping or spraying mode;
(2) And (5) drying.
(III) beneficial effects
Compared with the prior art, the invention provides the halogen-free flame retardant liquid and the application thereof, and has the following beneficial effects:
the invention provides a halogen-free flame retardant liquid, which is a water-soluble flame retardant with high thermal stability, environmental friendliness, small influence on products and small dosage.
(1) The halogen-free flame retardant liquid has high thermal stability and good water solubility. The halogen-free flame retardant liquid comprises zinc methylethyl phosphinate, wherein the zinc methylethyl phosphinate is alkyl hypophosphite, and has good heat stability and good water solubility.
(2) The invention has the advantages of less consumption, and ensures the flame retardance and smoke suppression of the product while the consumption is less, and the flame retardant grade reaches UL 94V-0 grade.
(3) The halogen-free flame retardant liquid is environment-friendly.
(4) The halogen-free flame retardant liquid has simple composition, high flame retardant efficiency and small influence on products.
(5) The preparation and the application are simple and convenient. The formed matrix material is immersed in the halogen-free flame-retardant liquid, and then dried, so that the production efficiency is high.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 1
Figure BDA0004020753490000051
Example 2:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 2
Figure BDA0004020753490000052
Figure BDA0004020753490000061
Example 3:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 3
Figure BDA0004020753490000062
Example 4:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 4
Figure BDA0004020753490000063
Example 5
The following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 5
Figure BDA0004020753490000064
/>
Figure BDA0004020753490000071
Example 6
The following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 6
Figure BDA0004020753490000072
Example 7
The following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 7
Figure BDA0004020753490000073
Example 8:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 8
Figure BDA0004020753490000074
Example 9:
the following raw materials are put into a container and stirred until the raw materials are uniformly dispersed, so as to prepare the zinc methylethyl hypophosphite flame retardant liquid 9
Figure BDA0004020753490000081
Example 10:
the following raw materials were put into a vessel and stirred until they were uniformly dispersed to prepare a zinc methylethyl hypophosphite flame retardant liquid 10
100 parts of water
0.5 part of triphenyl phenol polyoxyethylene ether (602 #)
2 parts of methyl ethyl zinc hypophosphite
Example 11:
the following raw materials were put into a vessel and stirred until they were uniformly dispersed to prepare a zinc methylethyl hypophosphite flame retardant liquid 11
100 parts of water
0.5 part of triphenyl phenol polyoxyethylene ether (602 #)
4 parts of methyl ethyl zinc hypophosphite
Example 12:
the following raw materials were put into a vessel and stirred until they were uniformly dispersed to prepare a zinc methylethyl hypophosphite flame retardant liquid 12
100 parts of water
0.5 part of triphenyl phenol polyoxyethylene ether (602 #)
Zinc methylethyl hypophosphite 6 parts
Example 13:
the following raw materials were put into a vessel and stirred until they were uniformly dispersed to prepare a zinc methylethyl hypophosphite flame retardant liquid 10
100 parts of water
0.5 part of triphenyl phenol polyoxyethylene ether (602 #)
10 parts of zinc methylethyl hypophosphite
The stability of the halogen-free flame retardant solutions of some examples is shown in Table 1. The test method is as follows: firstly preparing halogen-free flame retardant liquid according to a certain proportion, measuring the stability of the halogen-free flame retardant liquid, standing the prepared flame retardant liquid for 72 hours, and observing whether the flame retardant liquid is precipitated or not.
TABLE 1 stability of halogen-free flame retardant solutions
Examples 1 8 9
Whether or not to precipitate out Whether or not Whether or not Whether or not
The halogen-free flame retardant solutions of examples 1-9 were respectively applied to the open-cell sponge to obtain flame retardant open-cell sponge with numbers of 1'-9', wherein the steps of applying the halogen-free flame retardant solution to the open-cell sponge are as follows: the same kind of open-cell sponge with the same size is respectively immersed in the halogen-free flame-retardant liquid in the examples 1-9 for 10-20min, and then the immersed open-cell sponge is dried at 100 ℃ to obtain the flame-retardant open-cell sponge with the number of 1 '-9'.
Stability of the flame-retardant open-cell sponge (test for whether flame-retardant liquid is precipitated): the flame-retardant open-cell sponge with the number of 1'-9' was allowed to stand for 48 hours, and the surface of the sponge was observed for the presence or absence of precipitation of flame retardant, and the results are shown in Table 2.
Flame retardant properties of flame retardant open cell sponges: UL flame retardant rating tests were performed on flame retardant open cell sponges numbered 1'-9' and the results are listed in table 3.
Table 2 stability of halogen-free flame retardant liquid after application to open cell sponge
Examples 1’ 3’ 8’ 9’
Whether or not to precipitate out Whether or not Whether or not Whether or not Whether or not
Table 3 UL flame retardant rating test
Examples 1’ 2’ 3’ 4’ 5’ 6’ 7’ 8’ 9’
Flame retardant rating V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-2
The stability of the halogen-free flame retardant solutions of examples 10-13 is shown in Table 4. Wherein, the stability of the halogen-free flame retardant liquid is measured: firstly, preparing halogen-free flame retardant liquid according to a certain proportion, measuring the stability of the halogen-free flame retardant liquid, standing the prepared flame retardant liquid, and observing whether the flame retardant liquid is precipitated or not in 1 week, 2 weeks and 3 weeks respectively.
TABLE 4 stability of halogen-free flame retardant solutions
Examples 10 11 12 13
1 week, whether to precipitate Whether or not Whether or not Whether or not Whether or not
For 2 weeks, whether to precipitate Whether or not Whether or not Whether or not Whether or not
3 weeks, whether to precipitate Whether or not Whether or not Whether or not Is that
The halogen-free flame retardant solutions of examples 10 to 13 were respectively applied to PE foams (polyethylene foams) to obtain PE foams having numbers of 10'-13', wherein the steps of applying the halogen-free flame retardant solution to the PE foams are as follows: the same kind of PE foam with the same size is respectively immersed in the halogen-free flame retardant liquid of the examples 10-13 for 10-20min, and then the immersed PE foam is dried at 100 ℃ to obtain the flame retardant PE foam with the number of 10 '-13'.
Table 5 UL flame retardant rating test
Examples PE foam (untreated) 10’ 11’ 12’ 13’
Flame retardant rating N.R N.R V-0 V-0 V-0
The halogen-free flame retardant solutions of examples 10 to 13 were respectively applied to paper sheets to respectively obtain paper sheets numbered 10"-13", wherein the steps of applying the halogen-free flame retardant solution to the paper sheets are as follows: the same kind of paper with the same size is respectively immersed in the halogen-free flame retardant liquid of the examples 10-13 for 10-20min, and then the immersed paper is dried at 100 ℃ to obtain the flame retardant paper with the number of 10 '-13'.
Table 5 UL flame retardant rating test
Examples Paper (untreated) 10” 11” 12” 13”
Flame retardant rating N.R N.R V-1 V-0 V-0
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The halogen-free flame retardant liquid is characterized by comprising zinc methylethyl hypophosphite, water, an aqueous thickener and a water-soluble surfactant;
the halogen-free flame retardant liquid comprises the following components in parts by weight: 0-5 parts of water-based thickener, 0.5-3 parts of water-soluble surfactant, 4-9 parts of zinc methylethyl hypophosphite and 100 parts of water.
2. The halogen-free flame retardant liquid of claim 1 wherein the aqueous thickener is at least one of xanthan gum, water soluble polyacrylate and hydroxyethyl cellulose.
3. The halogen-free flame retardant liquid according to claim 1 or 2, wherein the water-soluble surfactant is at least one of triphenylphenol polyoxyethylene ether, dioctyl sodium sulfosuccinate, adipic acid polyester, glycerol stearate, a silane coupling agent, sodium dodecyl sulfate and sodium alkyl naphthalene sulfonate.
4. The halogen-free flame retardant liquid according to claim 1 or 2, further comprising 0-0.2 parts of a fixing agent and 0-1 part of a colorant.
5. The halogen-free flame retardant liquid of claim 4 wherein the fixing agent is a water soluble fixing agent and the colorant is an ink, a color paste or a pigment.
6. The halogen-free flame-retardant liquid according to claim 5, wherein the halogen-free flame-retardant liquid comprises, in parts by weight:
1.5 parts of xanthan gum, 1 part of glycerol stearate, 5 parts of zinc methylethyl hypophosphite and 100 parts of water; or alternatively, the first and second heat exchangers may be,
1.5 parts of xanthan gum, 1 part of dioctyl sodium sulfosuccinate, 5 parts of zinc methylethyl hypophosphite and 100 parts of water; or alternatively, the first and second heat exchangers may be,
1.5 parts of xanthan gum, 1 part of glycerol stearate, 4 parts of zinc methylethyl hypophosphite and 100 parts of water; or alternatively, the first and second heat exchangers may be,
0.5 part of triphenyl phenol polyoxyethylene ether, 6 parts of methyl ethyl zinc hypophosphite and 100 parts of water.
7. A flame retardant material, characterized in that the flame retardant material is obtained by treating a base material with the halogen-free flame retardant liquid according to any one of claims 1 to 6.
8. The flame retardant material of claim 7, wherein the matrix material is selected from the group consisting of open cell sponge, polyethylene foam, and paper.
9. Flame retardant material according to claim 7 or 8, wherein the treatment comprises the steps of:
(1) Treating the base material by using halogen-free flame retardant liquid in a dipping or spraying mode;
(2) And (5) drying.
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KR101453836B1 (en) * 2013-12-16 2014-10-23 주식회사 유니버샬켐텍 Hypophosphorous Type Flame Retardants and Manufacturing Method Thereof
CN104163831A (en) * 2014-08-12 2014-11-26 江苏利思德新材料有限公司 Methylethyl hypophosphite, and preparation method and application thereof

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