A water-based flame retardant and its preparation method and application

Abstract

The present invention discloses a water-based flame retardant and a preparation method and application thereof. The water-based flame retardant of the present invention comprises the following raw materials in mass fraction: flame retardant: 5 to 38 parts; paraffin emulsion: 1 to 3 parts; penetrant: 0.1 to 1 part; water: 65 to 90 parts; wherein the flame retardant is selected from one or more of diphenyl phosphate ethyl triphenyl phosphonium salt, diphenyl phosphate tetrabutyl quaternary ammonium salt, diphenyl phosphate tetrabutyl quaternary phosphonium salt, and diphenyl phosphate tetramethylguanidine salt. The flame retardant is a type of room temperature ionic liquid with phosphorus and / or nitrogen flame retardant elements. It not only has the properties of simple preparation, low cost, easy processing, good permeability, and good flame retardant effect, but also has the advantages of being convenient for use in textiles and having little impact on the feel.

Description

Technical Field

[0001] The invention relates to the technical field of flame retardant materials, and in particular to a water-based flame retardant and a preparation method and application thereof. Background Art

[0002] With the development of industry and the improvement of quality of life, people's awareness of animal protection has gradually increased. Therefore, synthetic fibers are one of the commonly used raw materials for decorative accessories and clothing. Synthetic fibers can be divided into four categories, namely polyester, nylon, acrylic, and spandex. However, since synthetic fibers are often used for heat preservation and often come into contact with heat sources, they are flammable.

[0003] Existing water-based flame retardant treatment liquids generally use insoluble powders or soluble phosphate crystals as the main flame retardant ingredients. The former has poor compatibility with the substrate and is difficult to penetrate during treatment. After treatment, it is easy to migrate to the surface of the material under the action of external force, and sedimentation will occur during storage. The latter will cause the phosphate crystals of the material to dissolve in water again in a humid environment, and migrate to the surface as the water evaporates, resulting in white frost and reduced flame retardancy.

[0004] In addition, whether it is an insoluble powder or a soluble phosphate, after being finally treated on the textile, the textile will become hard to a certain extent, affecting the feel of the textile itself, and further affecting the actual storage and application of its water-based flame retardant.

[0005] Therefore, there is an urgent need to develop a water-based flame retardant with good compatibility, good permeability, suitability for textiles and good flame retardant properties. Summary of the invention

[0006] In order to overcome the problems existing in the prior art, the purpose of the present invention is to provide a water-based flame retardant and a preparation method and application thereof.

[0007] The inventive concept of the present invention is: the present invention adopts a specific ionic liquid as the main flame retardant component, and uses water as the main raw material, and prepares a water-based flame retardant by adding a small amount of paraffin emulsion with hydrophobic groups, antibacterial agent and anionic surfactant. The flame retardant can effectively improve the permeability, improve the easy sedimentation during the storage process, and improve the easy precipitation in a high humidity environment. Create conditions.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] In a first aspect, the present invention provides a water-based flame retardant comprising the following raw materials in parts by weight:

[0010] Flame retardant: 5-38 parts; paraffin emulsion: 1-3 parts; penetrant: 0.1-1 parts; water: 65-90 parts;

[0011] Wherein, the flame retardant is selected from one or more of diphenyl phosphate ethyl triphenyl phosphonium salt, diphenyl phosphate tetrabutyl quaternary ammonium salt, diphenyl phosphate tetrabutyl quaternary phosphonium salt, and diphenyl phosphate tetramethylguanidine salt.

[0012] Preferably, the water-based flame retardant comprises the following raw materials in parts by weight: flame retardant: 15-35 parts; paraffin emulsion: 1-3 parts; penetrant: 0.1-1 parts; water: 65-90 parts,

[0013] Wherein, the flame retardant is selected from one or more of diphenyl phosphate ethyl triphenyl phosphonium salt, diphenyl phosphate tetrabutyl quaternary ammonium salt, diphenyl phosphate tetrabutyl quaternary phosphonium salt, and diphenyl phosphate tetramethylguanidine salt.

[0014] Further preferably, the water-based flame retardant comprises the following raw materials in parts by weight: flame retardant: 20-30 parts; paraffin emulsion: 1-3 parts; penetrant: 0.1-1 parts; water: 65-90 parts,

[0015] Wherein, the flame retardant is selected from one or more of diphenyl phosphate ethyl triphenyl phosphonium salt, diphenyl phosphate tetrabutyl quaternary ammonium salt, diphenyl phosphate tetrabutyl quaternary phosphonium salt, and diphenyl phosphate tetramethylguanidine salt.

[0016] Specifically, the structural formula of the diphenyl phosphate ethyl triphenyl quaternary phosphonium salt is as follows: The structural formula of the diphenyl phosphate tetrabutyl ammonium salt is as follows: The structural formula of the diphenyl phosphate tetrabutyl phosphonium salt is as follows: The structural formula of the diphenyl phosphate tetramethylguanidine salt used is as follows: Furthermore, these flame retardants are room temperature ionic liquids (ie, they are liquid at 10 to 30° C. and have good compatibility and dispersibility).

[0017] Preferably, the flame retardant is selected from one or more of diphenyl phosphate tetrabutyl quaternary phosphonium salt and diphenyl phosphate tetramethylguanidine salt.

[0018] Further preferably, the flame retardant includes: diphenyl phosphate tetrabutyl phosphonium salt and diphenyl phosphate tetramethylguanidine salt.

[0019] Preferably, the mass ratio of diphenyl phosphate tetrabutyl quaternary phosphonium salt to diphenyl phosphate tetramethylguanidine salt in the flame retardant is 1:1 to 5:1.

[0020] Preferably, the water-based flame retardant further comprises the following raw materials in parts by mass: bactericide: 0.1 to 1 part.

[0021] Preferably, the mass percentage of paraffin in the paraffin emulsion is 30% to 50%.

[0022] Preferably, the paraffin wax emulsion is an emulsion of paraffin wax having a hydrophobic group. Specifically, since paraffin wax is a hydrocarbon mixture having about 18 to 30 carbon atoms, it has a hydrophobic property, and the groups are mainly methyl and methylene, and the combined long carbon chain is the hydrophobic group.

[0023] Preferably, the penetrant is one or more of sodium dodecylbenzene sulfonate, sodium diisooctyl succinate sulfonate, sodium dodecyl sulfonate, and lauryl alcohol polyoxyethylene ether.

[0024] Preferably, the fungicide is an isothiazolinone fungicide.

[0025] In a second aspect, the present invention provides a method for preparing a water-based flame retardant, comprising the following steps:

[0026] Add the other raw materials in the formula amount described in the first aspect to the water in the formula amount described in the first aspect, stir and mix, and obtain a water-based flame retardant.

[0027] Specifically, the other raw materials include flame retardants, paraffin emulsions and penetrants.

[0028] Preferably, the method for preparing the water-based flame retardant comprises the following steps: adding other raw materials in the formula amount described in the first aspect to the water in the formula amount described in the first aspect, stirring and mixing, to obtain the water-based flame retardant.

[0029] Specifically, the other raw materials include flame retardants, paraffin emulsions, penetrants and antibacterial agents.

[0030] Preferably, stirring is maintained during the addition of the raw materials.

[0031] Preferably, the stirring speed is 800 r / min to 1500 r / min.

[0032] Preferably, the stirring and mixing time is 12 min to 25 min.

[0033] More preferably, the stirring and mixing time is 15 min to 20 min.

[0034] Preferably, the operations in the preparation method of the water-based flame retardant are all carried out at a temperature of 15°C to 35°C.

[0035] Preferably, the operations in the method for preparing the water-based flame retardant are all carried out under a pressure of 100 kPa to 110 kPa.

[0036] Further preferably, the operations in the method for preparing the water-based flame retardant are all carried out under a pressure of 101.3 kPa.

[0037] In a third aspect, the present invention provides use of the water-based flame retardant described in the first aspect or the flame retardant prepared by the preparation method described in the second aspect in the preparation of textiles.

[0038] Preferably, the raw materials of the textile are natural fibers and / or synthetic fibers.

[0039] The beneficial effects of the present invention are as follows: the water-based flame retardant of the present invention comprises: a room temperature ionic liquid flame retardant, a paraffin emulsion, a penetrant and water. The flame retardant is mainly composed of water and uses room temperature ionic liquids with phosphorus and / or nitrogen flame retardant elements. It not only has the properties of simple preparation, low cost, easy processing, good permeability and good flame retardant effect, but also has the advantages of being convenient for use in textiles and having little effect on the hand feel. Specifically:

[0040] (1) The water-based flame retardant of the present invention has simple components, good stability, good compatibility and good permeability;

[0041] (2) The water-based flame retardant of the present invention is used for textiles, which can not only improve the oxygen index of the textiles, but also does not affect the feel and waterproofness of the textiles;

[0042] (3) The water-based flame retardant of the present invention is simple to prepare and use, and improves the problem of poor water resistance and powder sedimentation caused by textiles treated by the immersion method. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The figure is the hydrogen nuclear magnetic spectrum of the diphenyl phosphate ethyl triphenyl quaternary phosphonium salt in the present invention.

[0044] Figure 2 It is the infrared spectrum of diphenyl ethyl triphenyl phosphonium quaternary salt in the present invention.

[0045] Figure 3 It is the nuclear magnetic hydrogen spectrum of tetrabutyl ammonium diphenyl phosphate in the present invention.

[0046] Figure 4 It is the infrared spectrum of tetrabutyl ammonium diphenyl phosphate in the present invention.

[0047] Figure 5 It is the nuclear magnetic hydrogen spectrum of tetrabutyl quaternary phosphonium diphenyl phosphate in the present invention.

[0048] Figure 6 It is the infrared spectrum of tetrabutyl quaternary phosphonium diphenyl phosphate in the present invention.

[0049] Figure 7 It is the nuclear magnetic hydrogen spectrum of diphenyl phosphate tetramethylguanidine salt in the present invention.

[0050] Figure 8It is the infrared spectrum of diphenyl phosphate tetramethylguanidine salt in the present invention. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below through specific examples.

[0052] Unless otherwise specified, the structural formula of the diphenyl ethyl triphenyl phosphonium ester quaternary salt used in this embodiment is as follows: The structural formula of the tetrabutyl ammonium diphenyl phosphate used is as follows: The structural formula of the tetrabutyl quaternary phosphonium diphenyl phosphate used is as follows: The structural formula of the diphenyl phosphate tetramethylguanidine salt used is as follows: The paraffin emulsion in this embodiment uses a paraffin emulsion with a mass percentage of 30% to 50%, and the fungicide uses an isothiazolinone fungicide.

[0053] Example 1

[0054] This embodiment provides a water-based flame retardant comprising the following raw materials by mass fraction:

[0055] Diphenyl ethyl triphenyl phosphonium quaternary salt: 20%;

[0056] Paraffin emulsion: 1.5%;

[0057] Sodium dodecylbenzenesulfonate: 0.5%;

[0058] Isothiazolinone fungicide: 0.5%;

[0059] Water: 77.5%.

[0060] This embodiment also provides a method for preparing a water-based flame retardant, comprising the following steps:

[0061] After adding the above-mentioned amount of water into a clean dispersion container, set the mixer speed to 1000 r / min; under stirring (speed: 1000 r / min), add diphenyl phosphate ethyl triphenyl quaternary phosphonium salt, paraffin emulsion, sodium dodecylbenzene sulfonate and isothiazolinone fungicide according to the above-mentioned amount, and control the stirring time to about 15 minutes to obtain a water-based flame retardant;

[0062] The above preparation processes are all carried out at room temperature and pressure (room temperature: 20°C-25°C, room pressure: 101.3 kPa).

[0063] Example 2

[0064] This embodiment provides a water-based flame retardant. The difference between this embodiment and embodiment 1 is that diphenyl phosphate tetrabutyl quaternary ammonium salt is used to replace diphenyl phosphate ethyl triphenyl quaternary phosphonium salt, and the raw materials include the following mass fractions:

[0065] Diphenyl phosphate tetrabutyl ammonium salt: 20%;

[0066] Paraffin emulsion: 1.5%;

[0067] Sodium dodecylbenzenesulfonate: 0.5%;

[0068] Isothiazolinone fungicide: 0.5%;

[0069] Water: 77.5%.

[0070] This embodiment also provides a method for preparing a water-based flame retardant, comprising the following steps:

[0071] After adding the above-mentioned amount of water into a clean dispersion container, set the mixer speed to 1000r / min; under stirring (speed: 1000r / min), add diphenyl phosphate tetrabutyl ammonium salt, paraffin emulsion, sodium dodecylbenzene sulfonate and isothiazolinone fungicide according to the above-mentioned amount, and control the stirring time to about 15 minutes to obtain a water-based flame retardant;

[0072] The above preparation processes are all carried out at room temperature and pressure (room temperature: 20°C-25°C, room pressure: 101.3 kPa).

[0073] Example 3

[0074] This embodiment provides a water-based flame retardant. The difference between this embodiment and embodiment 1 is that diphenyl phosphate tetrabutyl phosphonium quaternary salt is used to replace diphenyl phosphate ethyl triphenyl phosphonium quaternary salt, and the raw materials include the following mass fractions:

[0075] Diphenyl phosphate tetrabutyl quaternary phosphonium salt: 20%;

[0076] Paraffin emulsion: 1.5%;

[0077] Sodium dodecylbenzenesulfonate: 0.5%;

[0078] Isothiazolinone fungicide: 0.5%;

[0079] Water: 77.5%.

[0080] This embodiment also provides a method for preparing a water-based flame retardant, comprising the following steps:

[0081] After adding the above-mentioned amount of water into a clean dispersion container, set the mixer speed to 1000 r / min; under stirring (speed: 1000 r / min), add diphenyl phosphate tetrabutyl quaternary phosphonium salt, paraffin emulsion, sodium dodecylbenzene sulfonate and isothiazolinone fungicide according to the above-mentioned amount, and control the stirring time to about 15 minutes to obtain a water-based flame retardant;

[0082] The above preparation processes are all carried out at room temperature and pressure (room temperature: 20°C-25°C, room pressure: 101.3 kPa).

[0083] Example 4

[0084] This embodiment provides a water-based flame retardant comprising the following raw materials by mass fraction:

[0085] Diphenyl phosphate tetrabutyl quaternary phosphonium salt: 15%;

[0086] Diphenyl phosphate tetramethylguanidine salt: 5%;

[0087] Paraffin emulsion: 1.5%;

[0088] Sodium dodecylbenzenesulfonate: 0.5%;

[0089] Isothiazolinone fungicide: 0.5%;

[0090] Water: 77.5%.

[0091] This embodiment also provides a method for preparing a water-based flame retardant, comprising the following steps:

[0092] After adding the above-mentioned amount of water into a clean dispersion container, set the speed of the stirrer to 1000 r / min; under stirring (speed: 1000 r / min), add diphenyl phosphate tetrabutyl quaternary phosphonium salt, diphenyl phosphate tetramethylguanidine salt, paraffin emulsion, sodium dodecylbenzene sulfonate and isothiazolinone fungicide according to the above-mentioned amount, and control the stirring time to about 15 minutes to obtain a water-based flame retardant;

[0093] The above preparation processes are all carried out at room temperature and pressure (room temperature: 20°C-25°C, room pressure: 101.3 kPa).

[0094] Example 5

[0095] This embodiment provides a water-based flame retardant comprising the following raw materials by mass fraction:

[0096] Diphenyl phosphate tetrabutyl quaternary phosphonium salt: 20%;

[0097] Diphenyl phosphate tetramethylguanidine salt: 10%;

[0098] Paraffin emulsion: 1.5%;

[0099] Sodium dodecylbenzenesulfonate: 0.5%;

[0100] Isothiazolinone fungicide: 0.5%;

[0101] Water: 66.5%.

[0102] This embodiment also provides a method for preparing a water-based flame retardant, comprising the following steps:

[0103] After adding the above-mentioned amount of water into a clean dispersion container, set the mixer speed to 1000 r / min; under stirring (speed: 1000 r / min), add diphenyl phosphate tetrabutyl quaternary phosphonium salt, diphenyl phosphate tetramethylguanidine salt, paraffin emulsion, sodium dodecylbenzene sulfonate and isothiazolinone fungicide according to the above-mentioned amount, and control the stirring time to about 15 minutes to obtain a water-based flame retardant;

[0104] The above preparation processes are all carried out at room temperature and pressure (room temperature: 20°C-25°C, room pressure: 101.3 kPa).

[0105] Example 6

[0106] This embodiment provides a method for preparing a textile having flame retardant properties, comprising the following steps:

[0107] The textile is immersed in a water-based flame retardant for 10 minutes, the water-based flame retardant on the surface is dried, and then the textile is dried at 80°C to 110°C to obtain a textile with flame retardant properties.

[0108] Performance Testing

[0109] 1. NMR spectrum and IR spectrum of raw materials

[0110] (1) The nuclear magnetic hydrogen spectrum of the diphenyl phosphate ethyl triphenyl quaternary phosphonium salt of the present invention is as follows: Figure 1 The infrared spectrum of the diphenyl phosphate ethyl triphenyl quaternary phosphonium salt of the present invention is as shown in FIG. Figure 2 shown.

[0111] Depend on Figure 1 and Figure 2 It can be seen that in the NMR spectrum, the signal peaks with a displacement δ at 3.5ppm and 2.5ppm are the water peak and the solvent peak, the signal peaks with δ at 6.9ppm, 7.1ppm, and 7.2ppm are the three proton peaks on the benzene ring, and the signal peaks with δ at 0.9ppm, 1.4ppm, and 2.1ppm are the proton peaks on the butyl group.

[0112] At the same time, in the infrared spectrum, at 2960cm -1 、2932cm -1、2872cm -1 The signal peak is attributed to the absorption peak of methyl and methylene; located at 3064cm -1 、1595cm -1 、1493cm -1 The signal peak is attributed to the absorption peak of the benzene ring; located at 1274cm -1 The signal peaks on the left and right belong to the absorption peaks of P=O.

[0113] Based on the above analysis, the structure of the diphenyl phosphate ethyl triphenyl quaternary phosphonium salt used in the present invention is as follows:

[0114]

[0115] (2) The nuclear magnetic hydrogen spectrum of the tetrabutyl ammonium salt of diphenyl phosphate in the present invention is as follows: Figure 3 The infrared spectrum of the tetrabutyl quaternary ammonium salt of diphenyl phosphate in the present invention is as shown in FIG. Figure 4 shown.

[0116] Depend on Figure 3 and Figure 4 It can be seen that in the NMR spectrum, the signal peaks with a displacement δ at 3.4ppm and 2.5ppm are the water peak and the solvent peak, the signal peaks with a displacement δ at 6.9ppm, 7.1ppm, and 7.2ppm are the proton peaks on the benzene ring, and the signal peaks with a displacement δ at 0.9ppm, 1.3ppm, 1.5ppm, and 3.1ppm are the proton peaks on the butyl group.

[0117] At the same time, in the infrared spectrum, at 2961cm -1 、2874cm -1 The signal peak is attributed to the absorption peak of methyl and methylene; located at 3064cm -1 、1594cm -1 、1490cm -1 The signal peak is attributed to the absorption peak of the benzene ring; located at 1275cm -1 The signal peaks on the left and right belong to the absorption peaks of P=O.

[0118] Based on the above analysis, the structure of the diphenyl phosphate tetrabutyl ammonium salt used in the present invention is as follows:

[0119]

[0120] (3) The nuclear magnetic hydrogen spectrum of the tetrabutyl quaternary phosphonium diphenyl phosphate in the present invention is as follows: Figure 5 The infrared spectrum of tetrabutyl quaternary phosphonium diphenyl phosphate in the present invention is as shown in FIG. Figure 6 shown.

[0121] Depend on Figure 5 and Figure 6 It can be seen that: in the NMR spectrum, the signal peaks with a displacement δ at 3.4ppm and 2.5ppm are the water peak and the solvent peak, the signal peaks with a displacement δ at 7.9ppm and 7.8ppm are the proton peaks on the benzene ring of the quaternary phosphonium ion, the signal peaks with a displacement δ at 7.2ppm, 7.1ppm, and 7.0ppm are the proton peaks on the benzene ring of the phosphate ion, and the signal peaks with a displacement δ at 3.6 and 1.2ppm are the proton peaks on the ethyl group of the quaternary phosphonium ion.

[0122] At the same time, in the infrared spectrum, at 2940cm -1 The signal peak is attributed to the absorption peak of methyl and methylene; located at 3060cm -1 、1589cm -1 、1487cm -1 The signal peak is attributed to the absorption peak of the benzene ring; located at 1267cm -1 The signal peaks on the left and right belong to the absorption peaks of P=O.

[0123] Based on the above analysis, the structure of the tetrabutyl quaternary phosphonium diphenyl phosphate used in the present invention is as follows:

[0124]

[0125] (4) The nuclear magnetic hydrogen spectrum of the tetramethylguanidine diphenyl phosphate in the present invention is as follows: Figure 7 The infrared spectrum of the diphenyl phosphate tetramethylguanidine salt in the present invention is as shown in FIG. Figure 8 shown.

[0126] Depend on Figure 7 and Figure 8 It can be seen that in the NMR spectrum, the signal peaks with a displacement δ at 3.4ppm and 2.5ppm are the water peak and the solvent peak, the signal peak with a displacement δ at 8.0ppm is the proton peak on the amino group, the signal peaks with a displacement δ at 7.2ppm, 7.1ppm, and 7.0ppm are the proton peaks on the benzene ring, and the signal peak with a displacement δ at 2.8ppm is the proton peak on the methyl group.

[0127] At the same time, in the infrared spectrum, at 2960cm -1 、2817cm -1 The signal peak is attributed to the absorption peak of methyl; located at 1598cm -1 、1488cm -1 The signal peak is attributed to the absorption peak of the benzene ring; located at 1249cm -1 The signal peaks on the left and right belong to the absorption peaks of P=O.

[0128] Based on the above analysis, the structure of the diphenyl phosphate tetramethylguanidine salt used in the present invention is as follows:

[0129]

[0130] 2. Used for flame retardant performance testing of textiles

[0131] The water-based flame retardants prepared in Examples 1 to 5 were subjected to flame retardant performance tests, and the test method was as follows:

[0132] 1) Preparation of flame-retardant textiles: 5 pieces of fiber cloth (polyester fiber cloth is used here) with a size of 10 cm×10 cm were cut out respectively, and immersed in beakers containing the water-based flame retardant prepared in Examples 1 to 5 respectively. After 10 minutes, the pieces were taken out and the surface liquid was dried, and then put into an oven set at 100° C., and taken out after 60 minutes to obtain flame-retardant fiber cloth;

[0133] 2) The oxygen index of the flame retardant fiber cloth was tested using the test method of GB / T5454-1997. The test results are shown in Table 1.

[0134] Table 1 Results of the flame retardant performance test of the water-based flame retardants in Examples 1 to 5 for textiles

[0135]

[0136]

[0137] Note: The relationship between oxygen index and flame retardant effect is as follows:

[0138] If the oxygen index is ≤21%, it is a flammable material; if the oxygen index is 22%≤≤25%, it is a self-extinguishing material; if the oxygen index is 26%≤≤27%, it is a flame-retardant material.

[0139] It can be seen from Table 1 that compared with the untreated polyester fiber cloth, the oxygen index (24.5% to 27%) of the polyester fiber cloth treated with the water-based flame retardant in Examples 1 to 5 has been significantly improved.

[0140] Moreover, the polyester fiber cloth treated with the water-based flame retardant in Examples 1 to 5 can still maintain its original feel, indicating that the water-based flame retardant has good compatibility with the cloth.

[0141] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A water-based flame retardant, characterized in that: The invention comprises the following raw materials in parts by weight: flame retardant: 5 to 38 parts; paraffin emulsion: 1 to 3 parts; Penetrant: 0.1~1 part; Water: 65~90 parts; Wherein, the flame retardant comprises: diphenyl phosphate tetrabutyl quaternary phosphonium salt and diphenyl phosphate tetramethylguanidine salt.

2. The water-based flame retardant according to claim 1, characterized in that: The water-based flame retardant further comprises the following raw materials in parts by weight: bactericide: 0.1 to 1 part.

3. The water-based flame retardant according to claim 1 or 2, characterized in that: The mass percentage of paraffin in the paraffin emulsion is 30% to 50%.

4. The water-based flame retardant according to claim 1, characterized in that: The mass ratio of diphenyl phosphate tetrabutyl quaternary phosphonium salt to diphenyl phosphate tetramethylguanidine salt in the flame retardant is 1:1-5:

1.

5. The method for preparing the water-based flame retardant according to any one of claims 1 to 4, characterized in that: The following steps are involved: Adding the aforementioned mass portions of other raw materials to the aforementioned mass portions of water, stirring and mixing, thereby obtaining a water-based flame retardant.

6. The method for preparing the water-based flame retardant according to claim 5, characterized in that: The stirring speed is 800 r / min~1500 r / min.

7. The method for preparing the water-based flame retardant according to claim 5 or 6, characterized in that: The operations in the preparation method of the water-based flame retardant are all carried out at a temperature of 15°C to 35°C.

8. Use of the water-based flame retardant according to any one of claims 1 to 4 in the preparation of textiles.

Images