阅读说明：本技术 一种耐高温型无卤阻燃胶及其制备方法 (High-temperature-resistant halogen-free flame-retardant adhesive and preparation method thereof ) 是由 吕东清 吕向成 姚春苗 张孟清 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种耐高温型无卤阻燃胶及其制备方法,其制备方法包括如下步骤：(1)加水在70～100℃下搅拌溶解聚乙烯醇4～12h,完全溶解后加入交联剂形成均匀的溶液；(2)于步骤(1)所述溶液中加入水性乳液、阻燃剂、金属化合物、无机化合物,搅拌使其均匀分散1～2h；(3)于步骤(2)所述的溶液中边搅拌边加入发泡剂、稳泡剂；(4)于步骤(3)所述的溶液中边搅拌边加入增稠剂；(5)降温过滤即得阻燃胶。所用阻燃剂为氮系、磷系阻燃剂、硼酸锌的组合,本申请中的阻燃胶阻燃效果高效持久,抗静电性、耐高温性好,滴落物少,是一种无卤环保绿色的阻燃胶,而且该方法制备成本低、工艺简单,作为涂层整理到各种织物表面使织物具有良好的耐烧穿性。(The invention discloses a high-temperature resistant halogen-free flame retardant adhesive and a preparation method thereof, wherein the preparation method comprises the following steps: (1) adding water, stirring and dissolving polyvinyl alcohol for 4-12 hours at 70-100 ℃, and adding a cross-linking agent to form a uniform solution after completely dissolving; (2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1-2 hours; (3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring; (4) adding a thickening agent into the solution in the step (3) while stirring; (5) and cooling and filtering to obtain the flame-retardant adhesive. The flame retardant is a combination of a nitrogen flame retardant, a phosphorus flame retardant and zinc borate, the flame retardant adhesive has high and lasting flame retardant effect, good antistatic property and high temperature resistance, less dripping, is halogen-free environment-friendly green flame retardant adhesive, has low preparation cost and simple process, and has good burn-through resistance when being used as a coating to be finished on the surfaces of various fabrics.)

1. The high-temperature-resistant halogen-free flame-retardant adhesive is characterized by comprising the following components in percentage by weight:

2-10% of polyvinyl alcohol, 2-10% of a cross-linking agent, 16-25% of an aqueous emulsion, 30-50% of a flame retardant, 1-9% of an inorganic compound, 4-8% of a metal compound, 1-10% of a foaming agent, 2-10% of a foam stabilizer, 2-9% of a thickening agent and deionized water.

2. The high temperature resistant halogen-free flame retardant adhesive according to claim 1, wherein the degree of polymerization of the polyvinyl alcohol is 300-2500, and the degree of alcoholysis is 80-95%.

3. The high temperature resistant halogen-free flame retardant adhesive according to claim 1, wherein the aqueous emulsion is one or more selected from epoxy resin, ethylene-vinyl acetate copolymer emulsion, acrylic emulsion, polyurethane emulsion, styrene-butadiene emulsion, and butyronitrile emulsion.

4. The high temperature resistant halogen-free flame retardant adhesive of claim 1, wherein the flame retardant is selected from one or more of nitrogen series flame retardants and phosphorus series flame retardants.

5. The high temperature resistant halogen-free flame retardant adhesive according to claim 4, wherein the nitrogen series flame retardant is selected from one or more of melamine, dicyandiamide, melamine cyanurate.

6. The high temperature resistant halogen-free flame retardant adhesive according to claim 4, wherein the phosphorus-based flame retardant is selected from one or more of red phosphorus, ammonium polyphosphate, resorcinol bisphosphonate, bisphenol A bis (diphenylphosphonate), and triphenyl phosphonate.

7. The high temperature resistant halogen-free flame retardant adhesive of claim 1, wherein the metal compound is one or more selected from antimony trioxide, antimony pentoxide and zinc borate.

8. The high temperature resistant halogen-free flame retardant adhesive according to claim 1, wherein the inorganic compound is selected from one or more of potassium titanate whisker, zinc oxide whisker, aluminum hydroxide and magnesium hydroxide.

9. The preparation method of the high-temperature-resistant halogen-free flame retardant adhesive as claimed in any one of claims 1 to 8, characterized by comprising the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 4-12 h at 70-100 ℃, adding a cross-linking agent after completely dissolving, and reacting for 1-3 h to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1-2 hours;

(3) adding a foaming agent and a foam stabilizer into the solution obtained in the step (2) while stirring, wherein the time for use is 30-60 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30-60 min;

(5) and cooling and filtering to obtain the flame-retardant adhesive.

10. A fabric with flame retardant property, which is obtained by finishing the flame retardant adhesive according to any one of claims 1 to 8 on the surface of the fabric:

the finishing mode comprises one of spraying, dipping and spinning;

the mass ratio of the flame-retardant glue to the fabric is 1-5: 1, preferably 2: 1;

the finishing time is 2-5 h.

Technical Field

The invention relates to the field of preparation of flame retardant adhesive, D06N3/08, in particular to high-temperature resistant halogen-free flame retardant adhesive and a preparation method thereof.

Background

In recent years, with the progress of society and the improvement of living standard of people, the demand of various civil and industrial textiles is increased, but the number of fires caused by the ignition of the textiles is also increased, and serious economic loss and casualties are caused. Therefore, research on preparing textiles with flame retardant properties is very significant for reducing life property and yield loss.

Flame retardant fabrics are fabrics that prevent ignition or retard and stop combustion when exposed to flame or hot objects, both fiber-divided and post-finish flame retardant. The fiber flame retardance is that the flame retardant is added into the raw materials for spinning, the flame retardance is relatively good, but the cost is relatively high; the post-finishing flame retardance is the finishing of the flame retardant coating on the surface of the existing finished product, and has low cost and relatively poor flame retardant effect. Post-finishing flame retardance is used in daily flame retardant products mostly.

Patent CN200810104239.8 provides a composite flame retardant adhesive for high-strength polyester filament fabrics and a finishing method, wherein two-component flame retardant coating adhesives are adopted, namely inorganic phosphorus flame retardant adhesive and bromine-antimony flame retardant adhesive, the coating adhesives have certain permeability and waterproofness in the fabrics, can better play a flame retardant role, but can generate a large amount of toxic smog, cause body injury and pollute the environment. Patent CN201710182842.7 provides a flame retardant fabric, a flame retardant adhesive for the flame retardant fabric and a preparation method of the flame retardant adhesive, halogen-free phosphorus-nitrogen-ammonia flame retardant powder is used as a flame retardant, halogen-free, low-toxicity and non-corrosive, the prepared flame retardant adhesive has excellent flame retardant property, the fabric is soft, and the operation is simple. However, these methods all consider that the fabric will melt and drip during burning, further enlarging the burning area and increasing the loss. Moreover, the permanent static electricity brought by the fabric can cause the pH height of blood of a human body and the reduction of blood calcium, and influence the normal expression of genes of various organs and skins, so the antistatic flame-retardant adhesive is also a point to be paid attention to by people.

Disclosure of Invention

In order to solve the above problems, the first aspect of the present invention provides a high temperature resistant halogen-free flame retardant adhesive: the paint comprises the following components in percentage by weight:

2-10% of polyvinyl alcohol, 2-10% of a cross-linking agent, 16-25% of an aqueous emulsion, 28-50% of a flame retardant, 1-9% of an inorganic compound, 4-8% of a metal compound, 1-10% of a foaming agent, 2-10% of a foam stabilizer, 2-9% of a thickening agent and deionized water.

In a preferred embodiment, the polymerization degree of the polyvinyl alcohol is 300 to 2500, and the alcoholysis degree is 80 to 95%;

as a preferred embodiment, the cross-linking agent is selected from one or more of borax, boric acid and sodium trimetaphosphate;

as a preferred embodiment, the aqueous emulsion is selected from one or more of epoxy resin, ethylene-vinyl acetate copolymer emulsion, acrylic emulsion, polyurethane emulsion, butylbenzene emulsion and butyronitrile emulsion;

as a preferred embodiment, the flame retardant is selected from one or more of nitrogen series flame retardants, phosphorus series flame retardants;

as a preferred embodiment, the nitrogen-series flame retardant is selected from one or more of melamine, dicyandiamide, melamine cyanurate; more preferably melamine cyanurate;

as a preferred embodiment, the phosphorus-based flame retardant is selected from one or more of red phosphorus, ammonium polyphosphate, resorcinol bisphosphonate, bisphenol a bis (diphenylphosphonate), triphenyl phosphonate;

as a preferred embodiment, the metal compound is selected from one or more of antimony trioxide, antimony pentoxide, zinc borate; more preferably zinc borate;

as a preferred embodiment, the weight percentages of the metal compound, the nitrogen-series flame retardant and the phosphorus-series flame retardant are 1: 2-4: 2-3, more preferably 1: 3: 2;

as a preferred embodiment, the inorganic compound is selected from one or more of potassium titanate whisker, zinc oxide whisker, aluminum hydroxide, magnesium hydroxide;

as a preferred embodiment, the blowing agent is selected from one or more of sodium lauryl sulfate, sodium alcohol ether carboxylate, ethylene oxide/propylene oxide block copolymer;

as a preferred embodiment, the foam stabilizer is selected from one or more of polyethylene glycol, amine oxide and amine stearate;

as a preferred embodiment, the thickener is selected from one or more of acrylates, acrylamides, coconut oil amides;

the second aspect of the invention provides a preparation method of a high-temperature resistant halogen-free flame retardant adhesive, which comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 4-12 h at 70-100 ℃, adding a cross-linking agent after completely dissolving, and reacting for 1-3 h to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1-2 hours;

(3) adding a foaming agent and a foam stabilizer into the solution obtained in the step (2) while stirring, wherein the time for use is 30-60 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30-60 min;

(5) and cooling and filtering to obtain the flame-retardant adhesive.

The third aspect of the invention provides a fabric with flame retardant property, which is obtained by finishing the flame retardant glue on the surface of the fabric:

as a preferred embodiment, the finishing mode comprises one of spraying, dipping and spinning;

as a preferred embodiment, the mass ratio of the flame-retardant glue to the fabric is 1-5: 1, preferably 2: 1;

in a preferred embodiment, the finishing time is 2 to 5 hours.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the application, bisphenol A di (diphenyl) phosphonate, zinc borate and melamine cyanurate are added into a water-based emulsion as effective flame-retardant components of the flame-retardant adhesive, the flame-retardant effect is efficient and durable, the high temperature resistance is good, the influence of the action of a light stabilizer is small, polyvinyl alcohol and aluminum hydroxide are added simultaneously, the flame-retardant effect is obviously improved, the effect of retarding afterburning is also achieved to a certain extent, the generation amount of molten drops of the prepared flame-retardant fabric in the combustion process is reduced, no toxic smoke is generated in the combustion process, the flame-retardant adhesive is halogen-free environment-friendly green, zinc oxide whiskers are added into the system, and the prepared flame-retardant adhesive also has excellent antistatic performance.

(2) The polyvinyl alcohol is a water-soluble polymer containing polyhydroxy, when the polyvinyl alcohol is in a high-heat environment, hydroxyl on a carbon chain can be separated from the carbon chain, so that the carbon chain becomes active carbon and further forms an insulating layer to prevent heat transfer, and when the polyvinyl alcohol with the polymerization degree of 1700-1800 and the alcoholysis degree of 88% is added into a flame-retardant colloid system, good carbon forming property of the fabric during combustion is ensured, excellent burn-through resistance is achieved, meanwhile, combustion drops are avoided, the expansion of a combustion surface caused by the drops is further prevented, and a good flame-retardant effect is achieved.

(3) The phosphorus flame retardant and the nitrogen flame retardant composition are used as main components of the flame retardant adhesive in the application. The phosphorus flame retardant selects bisphenol A di (diphenyl phosphonate) which has good compatibility with high polymer, can be well dispersed in water-based emulsion to form stable and uniform emulsion, generates a pyrophosphoric acid protective film in the combustion process to block the supply of oxygen, promotes carbon formation and efficiently realizes flame retardance. The nitrogen flame retardant has low toxicity, high flame retardant efficiency and high thermal decomposition temperature, the selected melamine cyanurate has high whiteness and good dispersibility, the melamine cyanurate is added into the original flame retardant system, and the melamine cyanurate is self-combusted to generate a non-combustible gas such as NH₃、H₂O、NO₂、N₂And the oxygen supply is blocked, on the other hand, the generated gas reacts with the pyrophosphoric acid protective layer to generate a phosphorus-carbon foam layer, and the oxygen supply is further blocked, so that the flame retardant effect is achieved. The weight percentages of the zinc borate, the melamine cyanurate and the bisphenol A bis (diphenyl phosphonate) are 1: 3: 2, the three components act synergistically to enlarge the coverage density and the coverage area and effectively improve the flame-retardant effect. In addition, the melamine cyanurate can act together with polyvinyl alcohol to ensure no melt dripping phenomenon during the combustion of the fabric and reduce loss.

(4) In the flame retardant system of zinc borate, melamine cyanurate and bisphenol A bis (diphenylphosphonate), the added aluminum hydroxide can absorb a large amount of heat during the decomposition process, reduce the temperature around the polymer, release generated water vapor to dilute the oxygen concentration around the polymer, and generate metal oxide mixture residues to cover the surface of the substrate and delay the combustion degradation of the substrate. More importantly, the residues of the metal oxide mixture can absorb smoke dust and combustible gas, inhibit the release of the smoke dust in the combustion process of the polymer and reduce the rescue difficulty caused by smoke.

(5) The high-temperature-resistant halogen-free flame-retardant adhesive is successfully prepared by adding components such as a cross-linking agent, a foaming agent, a foam stabilizer, a thickening agent and the like in a certain proportion and mixing the components with effective components of a flame retardant.

Detailed Description

Example 1:

1. the high-temperature-resistant halogen-free flame-retardant adhesive comprises the following components:

polyvinyl alcohol (7%), a crosslinking agent (4%), aqueous emulsion (20%), a flame retardant (35%), an inorganic compound (2%), a metal compound (7%), a foaming agent (2%), a foam stabilizer (2%), a thickening agent (3%) and deionized water (the balance being up to 100%);

the polymerization degree of the polyvinyl alcohol is 1700, and the alcoholysis degree is 88% (purchased from Kyon chemical Co., Ltd.);

the cross-linking agent is borax;

the water-based emulsion is epoxy resin, acrylic emulsion and polyurethane emulsion, and the weight percentage of the water-based emulsion is 1: 1: 1;

the flame retardant is melamine cyanurate (CAS number: 37640-57-6), bisphenol A bis (diphenylphosphonate) (CAS number: 5945-33-5);

the metal compound is zinc borate (CAS number: 10361-94-1);

the weight percentages of the metal compound, the nitrogen flame retardant and the phosphorus flame retardant are 1: 3: 2;

the inorganic compound is zinc oxide whisker (Shanghai purple reagent factory) and aluminum hydroxide, and the weight percentage of the inorganic compound is 1: 1;

the foaming agent is sodium dodecyl sulfate;

the foam stabilizer is amine stearate (CAS number: 124-26-5);

the thickening agent is butyl acrylate (CAS number: 141-32-2);

2. a preparation method of high-temperature-resistant halogen-free flame-retardant adhesive comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 12 hours at 85 ℃, adding a cross-linking agent after completely dissolving, and reacting for 3 hours to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1.5 hours;

(3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring, wherein the time for use is 40 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30 min;

(5) cooling to 25 ℃, and filtering to obtain the flame-retardant adhesive.

3. A fabric with flame retardant property is prepared by finishing the flame retardant glue on the surface of the fabric.

The finishing mode is impregnation;

the mass ratio of the flame-retardant glue to the fabric is 2: 1, finishing for 4 hours, and then drying for 1 hour at 100 ℃ to obtain the flame-retardant fabric.

Example 2:

1. the high-temperature-resistant halogen-free flame-retardant adhesive comprises the following components:

polyvinyl alcohol (7%), a crosslinking agent (4%), aqueous emulsion (20%), a flame retardant (35%), an inorganic compound (2%), a metal compound (7%), a foaming agent (2%), a foam stabilizer (2%), a thickening agent (3%) and deionized water (the balance being up to 100%);

the polymerization degree of the polyvinyl alcohol is 2400 and the hydrolysis degree is 88% (purchased from Kyong chemical Co., Ltd.);

the cross-linking agent is borax;

the water-based emulsion is epoxy resin, ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion, and the weight percentage is 1: 1: 1;

the flame retardant is melamine cyanurate, bisphenol A bis (diphenyl phosphonate);

the metal compound is zinc borate;

the weight percentages of the metal compound, the nitrogen flame retardant and the phosphorus flame retardant are 1: 3: 2;

the inorganic compound is zinc oxide whisker and aluminum hydroxide, and the weight percentage of the inorganic compound is 1: 1;

the foaming agent is sodium dodecyl sulfate;

the foam stabilizer is amine stearate;

the thickening agent is butyl acrylate;

2. a preparation method of high-temperature-resistant halogen-free flame-retardant adhesive comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 12 hours at 85 ℃, adding a cross-linking agent after completely dissolving, and reacting for 3 hours to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1.5 hours;

(3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring, wherein the time for use is 40 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30 min;

(5) cooling to 25 ℃, and filtering to obtain the flame-retardant adhesive.

3. A fabric with flame retardant property is prepared by finishing the flame retardant glue on the surface of the fabric.

The finishing mode is impregnation;

the mass ratio of the flame-retardant glue to the fabric is 2: 1, finishing for 4 hours, and then drying for 1 hour at 100 ℃ to obtain the flame-retardant fabric. Comparative example 1:

1. the high-temperature-resistant halogen-free flame-retardant adhesive comprises the following components:

polyvinyl alcohol (7%), a crosslinking agent (4%), aqueous emulsion (20%), a flame retardant (28%), an inorganic compound (2%), a metal compound (7%), a foaming agent (2%), a foam stabilizer (2%), a thickening agent (3%) and deionized water (the balance being up to 100%);

the polymerization degree of the polyvinyl alcohol is 1700, and the alcoholysis degree is 88% (purchased from Kyon chemical Co., Ltd.);

the cross-linking agent is borax;

the water-based emulsion is epoxy resin, acrylic emulsion and polyurethane emulsion, and the weight percentage of the water-based emulsion is 1: 1: 1;

the flame retardant is melamine cyanurate, bisphenol A bis (diphenyl phosphonate);

the metal compound is zinc borate;

the weight percentages of the metal compound, the nitrogen flame retardant and the phosphorus flame retardant are 1: 1: 3;

the inorganic compound is zinc oxide whisker and aluminum hydroxide, and the weight percentage of the inorganic compound is 1: 1;

the foaming agent is sodium dodecyl sulfate;

the foam stabilizer is amine stearate;

the thickening agent is butyl acrylate;

2. a preparation method of high-temperature-resistant halogen-free flame-retardant adhesive comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 12 hours at 85 ℃, adding a cross-linking agent after completely dissolving, and reacting for 3 hours to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1.5 hours;

(3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring, wherein the time for use is 40 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30 min;

(5) cooling to 25 ℃, and filtering to obtain the flame-retardant adhesive.

3. A fabric with flame retardant property is prepared by finishing the flame retardant glue on the surface of the fabric.

The finishing mode is impregnation;

the mass ratio of the flame-retardant glue to the fabric is 2: 1, finishing for 4 hours, and then drying for 1 hour at 100 ℃ to obtain the flame-retardant fabric. Comparative example 2:

1. the high-temperature-resistant halogen-free flame-retardant adhesive comprises the following components:

polyvinyl alcohol (7%), a crosslinking agent (4%), aqueous emulsion (20%), a flame retardant (35%), an inorganic compound (2%), a metal compound (7%), a foaming agent (2%), a foam stabilizer (2%), a thickening agent (3%) and deionized water (the balance being up to 100%);

the polymerization degree of the polyvinyl alcohol is 1700, and the alcoholysis degree is 88%;

the cross-linking agent is borax;

the water-based emulsion is epoxy resin, acrylic emulsion and polyurethane emulsion, and the weight percentage ratio of the water-based emulsion is 1: 1: 1;

the flame retardant is melamine cyanurate, bisphenol A bis (diphenyl phosphonate);

the metal compound is zinc borate;

the weight percentages of the metal compound, the nitrogen flame retardant and the phosphorus flame retardant are 1: 4: 1;

the inorganic compound is zinc oxide whisker and aluminum hydroxide, and the weight percentage of the inorganic compound is 1: 1;

the foaming agent is sodium dodecyl sulfate;

the foam stabilizer is amine stearate;

the thickening agent is butyl acrylate;

2. a preparation method of high-temperature-resistant halogen-free flame-retardant adhesive comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 12 hours at 85 ℃, adding a cross-linking agent after completely dissolving, and reacting for 3 hours to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1.5 hours;

(3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring, wherein the time for use is 40 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30 min;

(5) cooling to 25 ℃, and filtering to obtain the flame-retardant adhesive.

3. A fabric with flame retardant property is prepared by finishing the flame retardant glue on the surface of the fabric.

The finishing mode is impregnation;

the mass ratio of the flame-retardant glue to the fabric is 2: 1, finishing for 4 hours, and then drying for 1 hour at 100 ℃ to obtain the flame-retardant fabric. Comparative example 3:

1. the high-temperature-resistant halogen-free flame-retardant adhesive comprises the following components:

polyvinyl alcohol (7%), a crosslinking agent (4%), aqueous emulsion (20%), a flame retardant (35%), an inorganic compound (2%), a metal compound (7%), a foaming agent (2%), a foam stabilizer (2%), a thickening agent (3%) and deionized water (the balance being up to 100%);

the polymerization degree of the polyvinyl alcohol is 1700, and the alcoholysis degree is 88% (purchased from Kyon chemical Co., Ltd.);

the cross-linking agent is borax;

the water-based emulsion is epoxy resin, acrylic emulsion and polyurethane emulsion, and the weight percentage of the water-based emulsion is 1: 1: 1;

the flame retardant is melamine cyanurate, bisphenol A bis (diphenyl phosphonate);

the metal compound is zinc borate;

the weight percentages of the metal compound, the nitrogen flame retardant and the phosphorus flame retardant are 1: 3: 2;

the inorganic compound is zinc oxide whisker;

the foaming agent is sodium dodecyl sulfate;

the foam stabilizer is amine stearate;

the thickening agent is butyl acrylate;

2. a preparation method of high-temperature-resistant halogen-free flame-retardant adhesive comprises the following steps:

(1) adding water, stirring and dissolving polyvinyl alcohol for 12 hours at 85 ℃, adding a cross-linking agent after completely dissolving, and reacting for 3 hours to form a uniform solution;

(2) adding the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound into the solution obtained in the step (1), and stirring to uniformly disperse the aqueous emulsion, the flame retardant, the metal compound and the inorganic compound for 1.5 hours;

(3) adding a foaming agent and a foam stabilizer into the solution in the step (2) while stirring, wherein the time for use is 40 min;

(4) adding a thickening agent into the solution in the step (3) while stirring, wherein the time for use is 30 min;

(5) cooling to 25 ℃, and filtering to obtain the flame-retardant adhesive.

3. A fabric with flame retardant property is prepared by finishing the flame retardant glue on the surface of the fabric.

The finishing mode is impregnation;

the mass ratio of the flame-retardant glue to the fabric is 2: 1, finishing for 4 hours, and then drying for 1 hour at 100 ℃ to obtain the flame-retardant fabric.

And (3) performance testing:

1. flame retardant property: the flame retardant properties of the fabrics were judged according to GB/T5455.

The flame retardant effect is as follows: the afterflame time of the fabrics obtained in examples 1 and 2 was 0 s; the flame time of the fabrics of comparative examples 1 and 2 was 1 s; the afterflame time of the fabric described in comparative example 3 was 2 s;

the damage length is as follows: the fabric obtained in example 1 had a damaged length of 13 cm; the damaged length of the fabric obtained in example 2 was 13.2 cm; the damaged length of the fabric obtained in comparative example 1 was 16.6 cm; the damaged length of the fabric obtained in comparative example 2 was 16 cm; the fabric obtained in comparative example 3 had a damaged length of 17.1 cm.

2. Washing fastness: the wash resistance of the flame retardant glue coating of the fabric was evaluated according to GB/T17591. The fabrics obtained in examples 1 and 2 are B1 grade; the fabrics obtained in comparative examples 1, 2 and 3 were of grade B2.