CN111286239A - Solvent type intumescent fire-retardant coating and preparation method thereof - Google Patents
Solvent type intumescent fire-retardant coating and preparation method thereof Download PDFInfo
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K3/22—Oxides; Hydroxides of metals
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Abstract
The invention discloses a solvent type intumescent fire-retardant coating and a preparation method thereof, belonging to the field of fire-retardant coatings, wherein the fire-retardant coating comprises, by weight, 20-35 parts of ammonium polyphosphate, 10-15 parts of a char forming agent, 13-20 parts of amino resin, 8-15 parts of acrylic resin, 6-16 parts of pigment, 10-15 parts of a foaming agent, 13-20 parts of a diluent and 1.5-6.8 parts of an auxiliary agent; the preparation method comprises the following steps: s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight; s2: adding the pigment, the ammonium polyphosphate, the carbon forming agent and the foaming agent into the step S1, and stirring for 25-35 min; s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 5-15 min; s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating. The fireproof coating has the effects of improving the stability of the coating and ensuring the fireproof performance of the coating.
Description
Technical Field
The invention relates to the field of fireproof coatings, in particular to a solvent type intumescent fireproof coating and a preparation method thereof.
Background
The fire-retardant coating is divided into an expansion type fire-retardant coating and a non-expansion type fire-retardant coating from a fire-retardant mechanism, wherein the non-expansion type fire-retardant coating achieves the purpose of flame retardance and fire prevention by means of high flame retardance or non-combustibility of the non-expansion type fire-retardant coating, and a large amount of fire retardants containing halogen, nitrogen, phosphorus and the like are added to generate a large amount of toxic gas when the non-expansion type fire-retardant coating needs to be coated thick. The expansion type fireproof coating is formed by that a coating film expands by heating to form a honeycomb-shaped carbonization layer, so that flame heat is isolated to reduce or slow down the transmission to a base material, and meanwhile, the coating decomposes out non-combustible gas at high temperature to isolate and dilute air, thereby achieving the fireproof performance.
However, the formation of the carbonized layer affects the stability of the coating, and the carbonized layer formed by the existing fireproof coating is easy to fall off under the attack of flame, so that the fire resistance limit of the coating is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a solvent type expansion type fireproof coating, which achieves the effects of improving the stability of the coating and ensuring the fireproof performance of the coating; the invention also aims to provide a preparation method of the solvent type fireproof coating.
The technical purpose of the invention is realized by the following technical scheme:
the solvent type intumescent fire-retardant coating comprises, by weight, 20-35 parts of ammonium polyphosphate, 10-15 parts of a char-forming agent, 13-20 parts of amino resin, 8-15 parts of acrylic resin, 6-16 parts of a pigment, 10-15 parts of a foaming agent, 13-20 parts of a diluent, and 1.5-6.8 parts of an auxiliary agent.
By adopting the technical scheme, the ammonium polyphosphate is not only a dehydrating agent but also a foaming agent, the ammonium polyphosphate is rapidly decomposed into ammonia gas and polyphosphoric acid at high temperature, the ammonia gas can dilute the oxygen concentration in a gas phase, so that the combustion preventing effect is achieved, the generated polyphosphoric acid is a strong dehydrating agent, a char forming agent can be dehydrated and carbonized to form a char layer, the contact between a polymer and oxygen is isolated, and the combustion preventing effect is achieved. The foaming agent is matched with ammonium polyphosphate for use, can be decomposed at a lower temperature and is cooperated with a base material to form a uniform and compact foam layer framework, the bonding strength of the coating and the base material is improved, the coating is prevented from being broken under the action of flame, the using stability of the coating is improved, meanwhile, the foaming agent is favorable for carrying out chemical combination reaction with a char forming agent, the normal combustion reaction is converted into dehydration reaction, carbon is effectively fixed on the carbon framework, the mechanical property of the coating is improved, a uniform and compact carbon foam layer is formed at the same time, the adhesion force between a paint film and the base material is ensured, and the fireproof performance of the fireproof coating is ensured.
The main absorption peak of the acrylic resin to light is outside the solar spectrum range, so that the acrylic resin is added into the coating, the coating has excellent light resistance and outdoor aging resistance, the probability of falling between the coating and a base material is effectively reduced, the adhesion force between the coating and the base material is ensured, and meanwhile, the acrylic resin is crosslinked into a three-dimensional net structure through chemical reaction under the action of amino resin, so that the adhesion force between the coating and the base material is improved, meanwhile, the impact of fire airflow can be borne, and the fireproof performance is further improved.
The invention is further set that the raw materials comprise, by weight, 23-32 parts of ammonium polyphosphate, 11-14 parts of a char forming agent, 15-19 parts of amino resin, 9-13 parts of acrylic resin, 8-14 parts of pigment, 11-14 parts of a foaming agent, 14-18 parts of a diluent and 2.5-5.8 parts of an auxiliary agent.
By adopting the technical scheme, the raw materials can further improve the bonding strength between the coating and the base material within the range, and the fireproof performance of the fireproof coating is ensured.
The invention further provides that the char-forming agent is pentaerythritol.
Through adopting above-mentioned technical scheme, pentaerythritol is under sufficient heat, and hydroxyl is from the carbon chain broken chain, loses the carbon chain of hydroxyl and forms the active carbon, and the active carbon forms the insulating layer in order to prevent the heat transfer, and pentaerythritol expands after meeting fire and foams simultaneously, forms one deck foam insulating layer, seals the protected substrate, prevents the substrate burning, and pentaerythritol and ammonium polyphosphate cooperation use in addition can play the synergism, can prevent the burning within a certain time to the development of control intensity of a fire.
The invention further provides that the foaming agent is melamine.
By adopting the technical scheme, the melamine and the ammonium polyphosphate have good compatibility, can generate a uniform and compact carbon layer when being heated, have good heat insulation, oxygen isolation, flame retardance and smoke suppression effects, and can effectively prevent the dripping phenomenon and prevent the propagation and spread of flame.
The invention is further set that the pigment comprises 3-8 parts of titanium dioxide and 3-8 parts of lithopone by weight.
By adopting the technical scheme, the titanium dioxide has the covering properties of zinc white and lead white, is nontoxic and cannot influence human bodies, and not only has a synergistic effect with ammonium polyphosphate and pentaerythritol, but also effectively prevents the coating from falling off and ensures the fireproof performance of the coating. The lithopone has good heat resistance and weather resistance, and the titanium dioxide and the lithopone are matched for use, so that the production cost of the fireproof coating is reduced, and the fireproof performance of the fireproof coating is effectively improved.
The invention is further provided that the diluent comprises acetic acid tincture ester and 200# solvent oil, and the weight ratio of the butyl acetate to the 200# solvent oil is 1: 6.5-10.
By adopting the technical scheme, butyl acetate is used as a solvent of the fireproof coating, so that the environment pollution is small, the compatibility of the butyl acetate with acrylic resin, amino resin and the like is good, the butyl acetate 200# solvent oil is used in a matching manner, the amino resin and the acrylic resin can be well dissolved, the viscosity of the acrylic resin and the amino resin is reduced, the construction performance of the coating can be effectively improved, the binding force between the coating and a base material is improved, and in addition, the butyl acetate also has quick-drying performance, so that the mechanical strength of the coating on the base material is ensured.
The invention is further set that the auxiliary agent comprises 1 to 5 portions of chlorinated paraffin, 0.3 to 1 portion of organic bentonite and 0.2 to 0.8 portion of drier according to the weight portion.
By adopting the technical scheme, chlorinated paraffin is used as a plasticizer, so that the flexibility of the coating can be effectively improved, and the phenomenon of falling off of the coating during hardening can be prevented; the chlorinated paraffin has higher chlorine content and lower softening temperature, can be decomposed to release gas at high temperature, has the functions of flame retardance, plasticization and coordinated foaming, and also has the function of providing a carbon source as a carbon forming agent; the addition of the organic bentonite can ensure that the fireproof coating has good construction performance during construction, prevent the coating from settling in the using process, and ensure the dry film thickness of the paint film under the condition of not reducing the thickness of the paint film, thereby improving the mechanical performance of the fireproof coating; the drier can not only effectively process the drying speed of the paint after spraying, accelerate the oxidation and polymerization of the paint film and achieve the purpose of quick drying, but also improve the hardness and adhesive force of the paint film.
The invention is further provided that the raw materials also comprise 3-8 parts of talcum powder according to the parts by weight, and the mesh number of the talcum powder is 800 meshes.
By adopting the technical scheme, the talcum powder has excellent physical and chemical properties such as flow aid, fire resistance, acid resistance, good covering power, strong adsorption power and the like, and in the coating, the talcum powder is used as a filler, so that the skeleton effect can be achieved, the manufacturing cost is reduced, the film hardness of the coating is improved, and the stability of the coating is improved.
Object two of the present invention: the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding the pigment, the ammonium polyphosphate, the carbon forming agent and the foaming agent into the step S1, and stirring for 25-35 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 5-15 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
By adopting the technical scheme, the diluent is mixed with the amino resin and the acrylic resin firstly, so that the amino resin, the acrylic resin and the diluent are fully dissolved and mixed, the non-uniform mixing is prevented, and then the home pigment, the ammonium polyphosphate, the carbon forming agent and the foaming agent are fully stirred and mixed uniformly.
The invention is further arranged that 3-8 parts by weight of talcum powder is added in step S2.
In conclusion, the invention has the following beneficial effects:
1. in the application, the ammonium polyphosphate, the foaming agent and the acrylic resin are used in a matched manner, so that a supporting framework is provided for forming a carbon layer, the adhesion between the base material and the coating is improved, the stability of the coating is improved, and the fireproof performance of the coating can be effectively ensured;
2. the butyl acetate in the diluent is matched with the No. 200 solvent oil for use, so that the amino resin and the acrylic resin can be effectively dissolved, the construction performance of the coating is improved, the adhesion between the coating and the base material is effectively improved, and the bonding strength between the coating and the base material is ensured.
Detailed Description
The present invention will be described in further detail with reference to examples.
The raw material sources are as follows:
the ammonium polyphosphate was purchased from Henan Tuo chemical products, Inc.;
pentaerythritol was purchased from jinan fuming chemical limited;
melamine was purchased from lonteng chemical ltd, gming;
titanium dioxide was purchased from new materials, inc of iloco, quan city;
chlorinated paraffin was purchased from special oil products, ltd, su zhou sai han;
the organic bentonite is purchased from Zhejiang Yuhong New materials Co., Ltd;
tincture acetate was purchased from mangrove water-based printing and coating materials, ltd;
200# solvent oil was purchased from special oils, Inc. of Suzhou sai Han;
the amino resin is purchased from mangrove water-based printing and coating materials, Inc.;
acrylic resins are available from mangrove waterborne print-coating materials, ltd;
talcum powder is purchased from Cishi county Bright mineral products processing Co., Ltd, and has a mesh size of 800 meshes;
lithopone was purchased from hebei unicolor pigment ltd;
the drier is purchased from Bocheng chemical Co., Ltd, Dongguan city.
Example 1
A solvent type intumescent fire-retardant coating comprises, by weight, 20 parts of ammonium polyphosphate, 15 parts of pentaerythritol, 13 parts of amino resin, 15 parts of acrylic resin, 6 parts of pigment, 15 parts of melamine, 15 parts of diluent and 6.8 parts of auxiliary agent;
wherein the pigment comprises 3 parts of titanium dioxide and 3 parts of lithopone by weight;
the diluent comprises acetic acid tincture ester and 200# solvent oil, the weight ratio of the butyl acetate to the 200# solvent oil is 1:6.5, namely 1.73 parts of the butyl acetate and 11.27 parts of the 200# solvent oil;
the auxiliary agent comprises 5 parts by weight of chlorinated paraffin, 1 part by weight of organic bentonite and 0.8 part by weight of drier;
the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding titanium dioxide, lithopone, ammonium polyphosphate, pentaerythritol and melamine into the step S1, and stirring for 25 min;
s3: adding chlorinated paraffin, organic bentonite and a drier into the step S2, and stirring and dispersing for 5 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
Example 2
A solvent type intumescent fire-retardant coating comprises, by weight, 23 parts of ammonium polyphosphate, 14 parts of pentaerythritol, 15 parts of amino resin, 13 parts of acrylic resin, 8 parts of pigment, 14 parts of melamine, 14 parts of diluent and 5.8 parts of auxiliary agent;
wherein the pigment comprises 4 parts of titanium dioxide and 4 parts of lithopone by weight;
the diluent comprises acetic acid tincture ester and 200# solvent oil, the weight ratio of the butyl acetate to the 200# solvent oil is 1:8, namely 1.56 parts of the butyl acetate and 12.44 parts of the 200# solvent oil;
the auxiliary agent comprises 4.4 parts of chlorinated paraffin, 0.8 part of organic bentonite and 0.6 part of drier by weight;
the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding titanium dioxide, lithopone, ammonium polyphosphate, pentaerythritol and melamine into the step S1, and stirring for 25 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 5 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
Example 3
A solvent type intumescent fire-retardant coating comprises the following raw materials, by weight, 28 parts of ammonium polyphosphate, 13 parts of pentaerythritol, 16 parts of amino resin, 12 parts of acrylic resin, 11 parts of pigment, 12 parts of melamine, 16 parts of diluent and 4.1 parts of auxiliary agent;
wherein the pigment comprises 5.5 parts of titanium dioxide and 5.5 parts of lithopone by weight;
the diluent comprises acetic acid tincture ester and 200# solvent oil, the weight ratio of the butyl acetate to the 200# solvent oil is 1:8, namely 1.78 parts of the butyl acetate and 14.22 parts of the 200# solvent oil;
the auxiliary agent comprises 3 parts by weight of chlorinated paraffin, 0.6 part by weight of organic bentonite and 0.5 part by weight of drier;
the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding titanium dioxide, lithopone, ammonium polyphosphate, pentaerythritol and melamine into the step S1, and stirring for 30 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 10 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
Example 4
A solvent type intumescent fire-retardant coating comprises, by weight, 32 parts of ammonium polyphosphate, 11 parts of pentaerythritol, 19 parts of amino resin, 9 parts of acrylic resin, 14 parts of pigment, 11 parts of melamine, 18 parts of diluent and 2.5 parts of auxiliary agent;
wherein the pigment comprises 7 parts of titanium dioxide and 7 parts of lithopone by weight;
the diluent comprises acetic acid tincture ester and 200# solvent oil, the weight ratio of butyl acetate to 200# solvent oil is 1:8, namely, 2 parts of butyl acetate and 16 parts of 200# solvent oil;
the auxiliary agent comprises 1.8 parts by weight of chlorinated paraffin, 0.4 part by weight of organic bentonite and 0.3 part by weight of drier;
the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding titanium dioxide, lithopone, ammonium polyphosphate, pentaerythritol and melamine into the step S1, and stirring for 35 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 15 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
Example 5
A solvent type intumescent fire-retardant coating comprises, by weight, 35 parts of ammonium polyphosphate, 10 parts of pentaerythritol, 20 parts of amino resin, 8 parts of acrylic resin, 16 parts of pigment, 10 parts of melamine, 20 parts of diluent and 1.5 parts of auxiliary agent;
wherein the pigment comprises 8 parts of titanium dioxide and 8 parts of lithopone by weight;
the diluent comprises acetic acid tincture ester and 200# solvent oil, the weight ratio of the butyl acetate to the 200# solvent oil is 1:10, namely 1.81 parts of the butyl acetate and 18.19 parts of the 200# solvent oil;
the auxiliary agent comprises 1 part of chlorinated paraffin, 0.3 part of organic bentonite and 0.2 part of drier by weight;
the preparation method of the solvent type intumescent fire retardant coating comprises the following steps:
s1: mixing and uniformly stirring the diluent, the amino resin and the acrylic resin in parts by weight;
s2: adding titanium dioxide, lithopone, ammonium polyphosphate, pentaerythritol and melamine into the step S1, and stirring for 35 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 15 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
Example 6
The solvent-based intumescent fire retardant coating is different from example 3 in that 3 parts by weight of talcum powder is further included in the raw materials, and the preparation method is different from example 3 in that the talcum powder is added in the step S2.
Example 7
The solvent-based intumescent fire retardant coating is different from example 3 in that 5 parts by weight of talcum powder is further included in the raw materials, and the preparation method is different from example 3 in that the talcum powder is added in the step S2.
Example 8
The solvent-based intumescent fire retardant coating is different from example 3 in that 8 parts by weight of talcum powder is further included in the raw materials, and the preparation method is different from example 3 in that the talcum powder is added in the step S2.
Comparative example 1
The difference from example 3 is that the diluent only adopts 200# solvent oil.
Comparative example 2
The difference from the example 3 is that the weight portion of the auxiliary agent is 4.1 portions, and the auxiliary agent comprises 3.9 portions of chlorinated paraffin, 0.1 portion of organic bentonite and 0.1 portion of drier.
Comparative example 3
The difference from example 3 is that chlorinated paraffin 1.9 parts, organic bentonite 1.2 parts, and drier 1.0 part.
Performance detection
The fireproof coatings in examples 1-8 and comparative examples 1-3 are subjected to performance detection, the detection results are shown in table 2, and the detection is in accordance with GB 14907-2018.
The performance index requirements of the fireproof coating are shown in Table 1
| Alkali resistance | After 360h of test, the coating has no phenomena of peeling, falling off and cracking, and the attenuation amount of the heat insulation efficiency is less than or equal to 35 percent |
| Resistance to salt spray corrosion | After 30 times of tests, the coating has no bubbles, obvious deterioration and softening phenomena and the attenuation of the heat insulation efficiency is less than or equal to 35 percent |
| Resistance to ultraviolet radiation | After 60 times of tests, the coating has no phenomena of delamination, cracking and pulverization, and the attenuation of the heat insulation efficiency is less than or equal to 35 percent |
| Resistance to Heat Exposure | After the 720-hour test, the coating has no phenomena of layer rising, falling, hollowing and cracking, and the attenuation of the heat insulation efficiency is less than or equal to 35 percent |
| Moisture and heat resistance | After 504h of test, the coating has no phenomena of peeling and falling off, and the attenuation quantity of the heat insulation efficiency is less than or equal to 35 percent |
| Fire resistance/h | ≥0.5 |
| Adhesive strength/MPa | ≥0.15 |
TABLE 2 paint Performance test results Table
| Item | Adhesive strength/MPa | Alkali resistance/%) | Salt spray corrosion resistance/%) | UV radiation resistance/%) | Resistance to heat exposure/%) | Moist heat resistance/%) | Fire resistance/h |
| Example 1 | 0.65 | 14 | 18 | 17 | 11 | 12 | 1.11 |
| Example 2 | 0.68 | 12 | 17 | 14 | 10 | 10 | 1.24 |
| Example 3 | 0.71 | 9 | 16 | 14 | 8 | 10 | 1.41 |
| Example 4 | 0.70 | 10 | 16 | 15 | 9 | 10 | 1.36 |
| Example 5 | 0.69 | 11 | 17 | 16 | 10 | 11 | 1.15 |
| Example 6 | 0.73 | 7 | 14 | 12 | 8 | 9 | 1.64 |
| Example 7 | 0.76 | 6 | 12 | 10 | 8 | 7 | 1.72 |
| Example 8 | 0.75 | 7 | 13 | 10 | 8 | 8 | 1.53 |
| Comparative example 1 | 0.54 | 16 | 22 | 24 | 16 | 18 | 0.82 |
| Comparative example 2 | 0.49 | 15 | 21 | 25 | 18 | 15 | 0.67 |
| Comparative example 3 | 0.53 | 14 | 21 | 23 | 17 | 14 | 0.64 |
From the above table, it can be seen that:
in examples 1-5, the performance of example 3 is better than the effects of examples 1-2 and examples 2-4, which indicates that the mixture ratio in example 3 is a better mixture ratio; the components are matched with each other, so that the stability and the fireproof performance of the fireproof coating can be effectively improved;
compared with the embodiment 3, the embodiment 6-8 has the advantages that after the talcum powder is added into the raw materials, the bonding strength, the alkali resistance, the hydrochloric acid corrosion resistance, the ultraviolet radiation resistance, the humidity resistance and the fire resistance of the paint are all improved compared with the embodiment 3, and the addition of the talcum powder can enhance the adhesive force of a paint film on a base material and improve the stability of the fireproof paint;
in comparison with example 3, when only 200# solvent oil is used as the diluent, the performances of the coating are reduced compared with those of example 3, which may be caused by the reduced solubility of the resin in the coating, resulting in the reduced adhesion between the coating and the substrate, and thus the reduced fire-retardant performance;
compared with the example 3, when the content of the auxiliary agent is unchanged and the contents of the organic bentonite and the drier are beyond the range of the application, the performances of the fireproof coating are reduced compared with those of the example 3, which shows that the content of the raw materials in the auxiliary agent can effectively improve the fireproof performance of the fireproof coating and the stability of the coating.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. A solvent type intumescent fire retardant coating is characterized in that: the raw materials comprise, by weight, 20-35 parts of ammonium polyphosphate, 10-15 parts of a char forming agent, 13-20 parts of amino resin, 8-15 parts of acrylic resin, 6-16 parts of pigment, 10-15 parts of a foaming agent, 13-20 parts of a diluent and 1.5-6.8 parts of an auxiliary agent.
2. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the raw materials comprise, by weight, 23-32 parts of ammonium polyphosphate, 11-14 parts of a char forming agent, 15-19 parts of amino resin, 9-13 parts of acrylic resin, 8-14 parts of pigment, 11-14 parts of a foaming agent, 14-18 parts of a diluent and 2.5-5.8 parts of an auxiliary agent.
3. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the char-forming agent is pentaerythritol.
4. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the foaming agent is selected from melamine.
5. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the pigment comprises 3-8 parts of titanium dioxide and 3-8 parts of lithopone by weight.
6. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the diluent comprises acetic acid tincture and 200# solvent oil, and the weight ratio of the butyl acetate to the 200# solvent oil is 1: 6.5-10.
7. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the auxiliary agent comprises 1-5 parts of chlorinated paraffin, 0.3-1 part of organic bentonite and 0.2-0.8 part of drier by weight.
8. A solvent-borne intumescent fire retardant coating as claimed in claim 1, characterized in that: the raw materials also comprise 3-8 parts of talcum powder according to parts by weight.
9. A process for the preparation of a solvent-based intumescent coating as claimed in any of claims 1 to 7, characterized in that it comprises the following steps:
s1: mixing and uniformly stirring the diluent, the butyl acetate, the amino resin and the acrylic resin in parts by weight;
s2: adding the pigment, the ammonium polyphosphate, the carbon forming agent and the foaming agent into the step S1, and stirring for 25-35 min;
s3: adding an auxiliary agent into the step S2, and stirring and dispersing for 5-15 min;
s4: and grinding and filtering the mixture obtained in the step S3 to obtain the fireproof coating.
10. The method for preparing a solvent-based intumescent fire retardant coating as claimed in claim 9, characterized in that: in step S2, 3-8 parts by weight of talc powder is added.
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| CN1380368A (en) * | 2002-04-11 | 2002-11-20 | 海洋化工研究院 | Expanding fire-proof paint |
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| CN105885575A (en) * | 2014-11-19 | 2016-08-24 | 许智静 | Fire-resistant coating material for outdoor steel structures and preparation method for fire-resistant coating material |
| CN107337970A (en) * | 2017-08-28 | 2017-11-10 | 广州化工研究设计院 | A kind of indoor ultrathin steel structure fireproof coating and preparation method thereof |
| CN107964310A (en) * | 2017-11-24 | 2018-04-27 | 鹤山市信兴化工有限公司 | Smokeless super-thin steel structure fire-proof paint and preparation method thereof |
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| CN1380368A (en) * | 2002-04-11 | 2002-11-20 | 海洋化工研究院 | Expanding fire-proof paint |
| CN105885575A (en) * | 2014-11-19 | 2016-08-24 | 许智静 | Fire-resistant coating material for outdoor steel structures and preparation method for fire-resistant coating material |
| CN104962153A (en) * | 2015-07-17 | 2015-10-07 | 林文友 | Ultrathin weather-resistant profile steel structure fire-resistant paint and preparation method thereof |
| CN105131783A (en) * | 2015-09-15 | 2015-12-09 | 云南倍特消防科技有限公司 | Fire retardant coating of super thin steel structure and preparation method thereof |
| CN107337970A (en) * | 2017-08-28 | 2017-11-10 | 广州化工研究设计院 | A kind of indoor ultrathin steel structure fireproof coating and preparation method thereof |
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Application publication date: 20200616 |