CN109735192A - A kind of fireproof coating and preparation method thereof based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion - Google Patents
A kind of fireproof coating and preparation method thereof based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion Download PDFInfo
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Abstract
The invention discloses a kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, it is combined using basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, ammonium polyphosphate, pentaerythrite, melamine, titanium dioxide, hydroxyethyl cellulose, dispersing agent, defoaming agent, n-octyl alcohol and water as primary raw material.The modification acrylate core-shell emulsion uses soft core monocoque, and soft core part is modified using basic zirconium phosphate, hard shell part is crosslinked using methacrylic acid, the flame retardant property and water resistance of acrylate core-shell latex are effectively improved, and shows excellent ageing-resistant performance and anti-yellowing property；Gained fireproof coating has many advantages, such as that the of long duration, long service life of fire prevention, weatherability be strong, good decorative property, aqueous, environmental protective, and preparing of being related to is simple, is suitble to promote and apply.
Description
Technical field
The invention belongs to macromolecule emulsions and technical field of coatings, and in particular to one kind is based on basic zirconium phosphate and methacrylic acid
The fireproof coating and preparation method thereof of compound modified acrylic ester core-shell emulsion.
Background technique
Today's society, fire frequently occur, and people's lives and properties is not only made to suffer a loss, but also periphery ecological environment meets with
It is destroyed to serious, therefore people increasingly pay attention to flameproof protection problem.In numerous flameproof protection technical solutions, fireproof coating
Since fire protecting performance is excellent, easy for construction, good decorative property, it is economic and environment-friendly the advantages that, be widely used in engineering.And
Matrix of the lotion as fireproof coating, acts as the effect of life skeleton, and emulsion property plays the quality of Properties of Fire-Proofing Coatings
Conclusive effect.
In numerous lotions, acrylic acid ester emulsion is due to being widely used in water paint with excellent performance.
Currently, the acrylic acid ester emulsion of preparation usually exists, layer film temperature is high, high temperature after-tacks, water resistance and contaminated resistance difference etc. lack
Point, the organosilicon-modified acrylate core-shell emulsion as disclosed in patent CN 102391412, by organosilicon to acrylate
Lotion is modified, but its ageing-resistant and inoxidizability is bad, easy xanthochromia, and at high cost, is unsuitable for being widely applied.
Therefore, it further explores high-performance acrylic acid ester lotion and optimizes its preparation process with important research and application
Meaning.
Summary of the invention
It is an object of the invention in view of the deficienciess of the prior art, providing a kind of based on basic zirconium phosphate and methacrylic acid
The fireproof coating of compound modified acrylic ester core-shell emulsion, the fireproof coating have fire resistance period length, water-tolerant, adhesive force excellent
It is different, drying time is short, crack resistance is good, advantages of environment protection, and the preparation process being related to is simple, is suitble to promote and apply.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, each component and
Its shared mass percent includes: basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion 20~30%, poly- phosphorus
Sour ammonium 30~36%, pentaerythrite 10~20%, melamine 10~15%, titanium dioxide 1~5%, hydroxyethyl cellulose 0.5
~1%, dispersing agent 0.5~1%, defoaming agent 0.5~1%, n-octyl alcohol 0.5~1%, remaining is water.
In above scheme, the basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion are with emulsifier, core
Monomer mixture, basic zirconium phosphate, shell monomer mixture and cross-linking monomer are that primary raw material is formed through core-shell emulsion polymerization, specific to prepare
Method the following steps are included:
1) emulsifier is dissolved in the water and prepares emulsifier aqueous solution, and be divided into three parts, a emulsifier is water-soluble thereto
Basic zirconium phosphate is added in liquid, after 0.5~1h of ultrasonic disperse, nuclear monomer mixture is added, 0.5~1h of pre-emulsification obtains core pre-emulsion；To
Shell monomer mixture is added in another emulsifier aqueous solution and cross-linking monomer, 1~2h of pre-emulsification obtain shell pre-emulsion；It will
Buffer is dissolved in remaining a emulsifier aqueous solution, obtains aqueous solution of buffer agent；Initiator is soluble in water, obtain initiator water
Solution；
2) preparation of seed emulsion: under agitation, sequentially added into reaction vessel aqueous solution of buffer agent, 1/4~
The core pre-emulsion of the initiator solution of 1/3 volume and 2/5~1/2 volume, then heats to 65~70 DEG C, when lotion occurs
When a large amount of blue lights, 0.5~1h is kept the temperature, seed emulsion is obtained；
3) stratum nucleare polymerize: into gained seed emulsion, instilling the initiation of remaining core pre-emulsion and 1/4~1/3 volume
Agent is water-soluble, and control is added dropwise simultaneously in 1.0-1.5h, and then temperature control is to 70~80 DEG C, and keeps the temperature 0.5~1h, obtains stratum nucleare cream
Change liquid；
4) shell polymerize: into gained stratum nucleare emulsion, remaining initiator solution and shell pre-emulsion is added dropwise, and control
System is dripped off in 1~2h, then heats to 80~85 DEG C of 0.5~1h of heat preservation, then naturally cool to 40~50 DEG C, adjusts pH value to 7
~9, it is sieved to get basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion.
In above scheme, the nuclear monomer mixture and shell monomer mixture are made of soft monomer, hard monomer respectively；Its
In, soft monomer is n-butyl acrylate, and hard monomer is methyl methacrylate；Soft, hard monomer quality in nuclear monomer mixture
Than for 2:1~5:1, soft, hard monomer mass ratio is 3:1~1:3 in shell monomer mixture.
In above scheme, the mass ratio of the nuclear monomer mixture and shell monomer mixture is 2:3~3:2.
In above scheme, the basic zirconium phosphate is alpha zirconium phosphate, and partial size is 800 mesh~5000 mesh.
In above scheme, gained basic zirconium phosphate accounts for the 1~8% of nuclear monomer mixture and shell monomer mixture gross mass.
In above scheme, the cross-linking monomer is methacrylic acid, and cross-linking monomer accounts for nuclear monomer mixture and shell monomer is mixed
Close the 1~10% of object gross mass.
In above scheme, the emulsifier is by anion emulsifier and nonionic emulsifier 1:3~3:1 group in mass ratio
At；Anion emulsifier is one kind of sodium dodecylbenzene or lauryl sodium sulfate, and nonionic emulsifier is poly- for alkyl phenol
Ethylene oxide ether, emulsifier are 3~4% of soft or hard monomer gross mass in raw material.
In above scheme, the aqueous solution of buffer agent is one of sodium bicarbonate, sodium dihydrogen phosphate, and buffer dosage is
The 0.2~0.5% of nuclear monomer mixture and shell monomer mixture gross mass；The concentration of aqueous solution of buffer agent is 10~20wt%.
In above scheme, the initiator be potassium peroxydisulfate or ammonium persulfate, initiator amount be nuclear monomer mixture and
The 0.4~0.8% of shell monomer mixture gross mass；The dosage of water is that nuclear monomer mixture and shell monomer are mixed in initiator solution
Close the 10~30% of object gross mass.
In above scheme, dispersing agent is wetting dispersing agent 5040 etc..
In above scheme, defoaming agent is organic silicon defoamer 470 etc..
In above scheme, water is deionized water.
A kind of system of above-mentioned fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion
Preparation Method includes the following steps:
1) raw material is weighed according to the ratio, and each raw material and its shared mass percent include: that basic zirconium phosphate and methacrylic acid are compound
Modification acrylate core-shell emulsion 20~30%, ammonium polyphosphate 30~36%, pentaerythrite 10~20%, melamine 10~
15%, titanium dioxide 1~5%, hydroxyethyl cellulose 0.5~1%, dispersing agent 0.5~1%, defoaming agent 0.5~1%, n-octyl alcohol
0.5~1%, remaining is water；
2) weighed ammonium polyphosphate, pentaerythrite, melamine, titanium dioxide, hydroxyethyl cellulose are ground into powdery,
Then plus water be fully ground it is uniformly mixed；Defoaming agent and dispersing agent are added, continues to be fully ground；
3) basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion are eventually adding and n-octyl alcohol is fully ground
It is uniformly mixed to get the fireproof coating.
Compared with prior art, the invention has the benefit that
1) present invention carries out composite modified, the basic zirconium phosphate tool of introducing by introducing basic zirconium phosphate in acrylate core-shell latex
There are good thermal stability, mechanical strength, chemical stability and catalysis carbon-forming effect, the solid acid catalysis effect of basic zirconium phosphate can
Promote reacting at charcoal for conventional expanded type fire retardant with " zero distance ", while its lamellar structure can also improve foamed char
Intensity and air-tightness；In addition, foamed char can wrap up combustion degradation product, it is the catalysis carbon-forming of basic zirconium phosphate and ammonium polyphosphate
Time and favorable environment are created in effect；The basic zirconium phosphate of introducing can be used as a kind of fire retarding synergist, have between conventional flame retardant
Good cooperative flame retardant effect；Also it can be used as into charcoal skeleton and stablize layer of charcoal, improve layer of charcoal intensity, make to be formed when gained coating burning
Layer of charcoal it is stronger, be not easy to be broken through by flame, while forming similar ceramic-like structure in charcoal layer surface；Basic zirconium phosphate is introduced third
The de- crystallization water of basic zirconium phosphate can occur in olefin(e) acid ester core-shell emulsion base fireproof coating in burning to react, retarded combustion speed, and
It can promote lotion matrix that redox reaction and thermooxidative crosslinking reaction etc. occurs, to be obviously improved its anti-flaming thermal-insulation performance.
2) present invention mixed during core-shell emulsion polymerization basic zirconium phosphate and cross-linking monomer carry out it is composite modified, in stratum nucleare plus
Enter basic zirconium phosphate, removes basic zirconium phosphate between stratum nucleare emulsion polymer is inserted into zirconium phosphate layer using the stratiform special construction of basic zirconium phosphate
It scatter in stratum nucleare, to improve lotion flame retardant property, heat-resisting quantity, inoxidizability and resistance to ag(e)ing；In shell polymerization
Cross-linking monomer methacrylic acid is added, forms certain cross-linked network, so that shell compactness improves, forms one layer of hard guarantor
Sheath further enhances the waterproofness and resistance to soiling of gained lotion.
3) present invention gained fireproof coating has strong prevent fires of long duration, long service life, weatherability, good decorative property, aqueous
The advantages that environmentally friendly, and what is be related to prepares simple, suitable popularization and application.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
In following embodiment, the dispersing agent used is wetting dispersing agent 5040；Defoaming agent is organic silicon defoamer 470.
For the basic zirconium phosphate used for alpha zirconium phosphate, partial size is 5000 mesh.
In following embodiment, the preparation method of the basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion
Include the following steps:
1) 1.0g alkyl phenol polyoxyethylene ether and 2.0g lauryl sodium sulfate are dissolved in 90ml deionized water and are configured to
Emulsifier aqueous solution, and it is classified as tri- parts of 35ml, 30ml, 25ml；2.0g basic zirconium phosphate is added in 35ml emulsifier aqueous solution,
Ultrasonic disperse 40min adds 50g n-butyl acrylate and 10g methyl methacrylate, and mixing, pre- cream is stirred at room temperature
Change 1h, core pre-emulsion is made；10g n-butyl acrylate, 30g methyl methacrylate and 2.4g methacrylic acid are added to
In 30ml emulsifier aqueous solution, mixing is stirred at room temperature, shell pre-emulsion is made in pre-emulsification 2h；0.3g sodium bicarbonate is molten
Aqueous solution of buffer agent is made in the stirring and dissolving in 25ml emulsifier aqueous solution；0.5g potassium peroxydisulfate is added to 30ml deionization
Initiator solution is made in stirring and dissolving in water；
2) preparation of seed emulsion: in the reaction vessel, aqueous solution of buffer agent, 1/3 volume are sequentially added while stirring
The core pre-emulsion of initiator solution and 1/2 volume, is warming up to 70 DEG C, when a large amount of blue lights occurs in lotion, keeps the temperature 0.5h, obtains
Seed emulsion；
3) stratum nucleare polymerize: at the end of seed emulsion heat preservation, residual nucleus pre-emulsion and 1/3 initiator solution is slow
It instills in seed emulsion, is added dropwise simultaneously in 1h, temperature control keeps the temperature 0.5h, obtain stratum nucleare emulsion to 80 DEG C；
4) shell polymerize: at the end of nucleus emulsion heat preservation, remaining initiator solution and shell pre-emulsion is added dropwise,
It is dripped off in 1.5h, then heats to 85 DEG C of heat preservation 0.5h, then naturally cool to 40 DEG C, adjusted pH value to 8, cross 200 meshes, obtain
Basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion.
In following comparative example, the preparation method of the acrylate core-shell latex includes the following steps:
1) 1.0g alkyl phenol polyoxyethylene ether and 2.0g lauryl sodium sulfate are dissolved in 90ml deionized water and are configured to
Emulsifier aqueous solution, and it is classified as tri- parts of 35ml, 30ml, 25ml；By 50g n-butyl acrylate and 10g methyl methacrylate
Ester is added in 35ml emulsifier aqueous solution, and mixing is stirred at room temperature, and core pre-emulsion is made in pre-emulsification 1h；By 10g propylene
Sour N-butyl, 30g methyl methacrylate and 2.4g methacrylic acid are added in 30ml emulsifier aqueous solution, are stirred at room temperature
Mixing is mixed, shell pre-emulsion is made in pre-emulsification 2h；0.3g sodium bicarbonate is dissolved in stirring and dissolving in 25ml emulsifier aqueous solution,
Aqueous solution of buffer agent is made；0.5g potassium peroxydisulfate is added to stirring and dissolving in 30ml deionized water, initiator solution is made；
2) preparation of seed emulsion: in the reaction vessel, aqueous solution of buffer agent, 1/3 volume are sequentially added while stirring
The core pre-emulsion of initiator solution and 1/2 volume, is warming up to 70 DEG C, when a large amount of blue lights occurs in lotion, keeps the temperature 0.5h, obtains
Seed emulsion；
3) stratum nucleare polymerize: at the end of seed emulsion heat preservation, residual nucleus pre-emulsion and 1/3 initiator solution is slow
It instills in seed emulsion, is added dropwise simultaneously in 1h, temperature control keeps the temperature 0.5h, obtain stratum nucleare emulsion to 80 DEG C；
4) shell polymerize: at the end of nucleus emulsion heat preservation, remaining initiator solution and shell pre-emulsion is added dropwise,
It is dripped off in 1.5h, then heats to 85 DEG C of heat preservation 0.5h, then naturally cool to 40 DEG C, adjusted pH value to 8, cross 200 meshes, obtain
Basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion.
Embodiment 1
A kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, each component and
Its shared mass percent are as follows: basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion 20%, ammonium polyphosphate
36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%, defoaming
Agent 0.5%, n-octyl alcohol 0.5%, water 15%, preparation method includes the following steps:
1) raw material is weighed by said ratio requirement；
2) weighed ammonium polyphosphate, pentaerythrite, melamine, titanium dioxide, hydroxyethyl cellulose are ground into powdery,
Then plus water be fully ground it is uniformly mixed；Defoaming agent and dispersing agent are added, continues to be fully ground；
3) basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion are eventually adding and n-octyl alcohol is fully ground
It is uniformly mixed to get the fireproof coating.
Embodiment 2
A kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, each component and
Its shared mass percent are as follows: basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion 25%, ammonium polyphosphate
36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%, defoaming
Agent 0.5%, n-octyl alcohol 0.5%, water 10%, preparation step is the same as embodiment 1.
Embodiment 3
A kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, each component and
Its shared mass percent are as follows: basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion 30%, ammonium polyphosphate
36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%, defoaming
Agent 0.5%, n-octyl alcohol 0.5%, water 5%, preparation step is the same as embodiment 1.
Comparative example 1
A kind of aqueous fire-proof coating, each component and its shared mass percent are as follows: acrylate core-shell latex 20%, poly- phosphorus
Sour ammonium 36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%,
Defoaming agent 0.5%, n-octyl alcohol 0.5%, water 15%, preparation step is the same as embodiment 1.
Comparative example 2
A kind of aqueous fire-proof coating, each component and its shared mass percent are as follows: acrylate core-shell latex 25%, poly- phosphorus
Sour ammonium 36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%,
Defoaming agent 0.5%, n-octyl alcohol 0.5%, water 10%, preparation step is the same as embodiment 1.
Comparative example 3
A kind of aqueous fire-proof coating, each component and its shared mass percent are as follows: acrylate core-shell latex 30%, poly- phosphorus
Sour ammonium 36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, dispersing agent 0.5%,
Defoaming agent 0.5%, n-octyl alcohol 0.5%, water 5%, preparation step is the same as embodiment 1.
Comparative example 4
A kind of aqueous fire-proof coating, each component and its shared mass percent are as follows: acrylate core-shell latex 25%, phosphoric acid
Zirconium 5%, ammonium polyphosphate 36%, pentaerythrite 12%, melamine 12%, titanium dioxide 3%, hydroxyethyl cellulose 0.5%, point
Powder 0.5%, defoaming agent 0.5%, n-octyl alcohol 0.5%, water 5%, preparation step is the same as embodiment 1.
Examples 1 to 3 and 1~3 gained aqueous fire-proof coating of comparative example are prevented fires respectively, the performances such as waterproof, cracking resistance
Test, the results are shown in Table 1.
The performance test results of 1~3 gained fireproof coating of 1 Examples 1 to 3 of table and comparative example
The above results show: present invention gained is based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion
Fireproof coating there is fire resistance period length, water resistance, yellowing resistance and adhesive force is excellent, drying time is short, it is excellent that crack resistance is good etc.
Point, and it is environmental-friendly, it is with a wide range of applications.
The bound value of each raw material of the present invention, interval value can realize the present invention, technological parameter of the invention
The lower limit value and interval value of (such as temperature, time) can realize the present invention, embodiment numerous to list herein.The above institute
State only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art, do not departing from this hair
Under the premise of bright concept, several modifications and variations are made, these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of fireproof coating based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion, feature exist
In each component and its shared mass percent include: basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion 20
~30%, ammonium polyphosphate 30~36%, pentaerythrite 10~20%, melamine 10~15%, titanium dioxide 1~5%, hydroxyl second
Base cellulose 0.5~1%, dispersing agent 0.5~1%, defoaming agent 0.5~1%, n-octyl alcohol 0.5~1%, remaining is water.
2. fireproof coating according to claim 1, which is characterized in that the basic zirconium phosphate and methacrylic acid composite modified third
Olefin(e) acid ester core-shell emulsion is passed through by primary raw material of emulsifier, nuclear monomer mixture, basic zirconium phosphate, shell monomer mixture and cross-linking monomer
Core-shell emulsion polymerization forms, specific preparation method the following steps are included:
1) emulsifier is dissolved in the water and prepares emulsifier aqueous solution, and be divided into three parts, a emulsifier aqueous solution adds thereto
Enter basic zirconium phosphate, after 0.5~1h of ultrasonic disperse, nuclear monomer mixture is added, 0.5~1h of pre-emulsification obtains core pre-emulsion；To another
Shell monomer mixture is added in part emulsifier aqueous solution and cross-linking monomer, 1~2h of pre-emulsification obtain shell pre-emulsion；By buffer
It is dissolved in remaining a emulsifier aqueous solution, obtains aqueous solution of buffer agent；Initiator is soluble in water, obtain initiator solution；
2) preparation of seed emulsion: under agitation, aqueous solution of buffer agent, 1/4~1/3 body are sequentially added into reaction vessel
The core pre-emulsion of long-pending initiator solution and 2/5~1/2 volume, then heats to 65~70 DEG C, when lotion occurs largely
When blue light, 0.5~1h is kept the temperature, seed emulsion is obtained；
3) stratum nucleare polymerize: into gained seed emulsion, instilling the initiator water of remaining core pre-emulsion and 1/4~1/3 volume
Solution, control are added dropwise simultaneously in 1.0-1.5h, and then temperature control is to 70~80 DEG C, and keeps the temperature 0.5~1h, obtain stratum nucleare emulsification
Liquid；
4) shell polymerize: into gained stratum nucleare emulsion, remaining initiator solution and shell pre-emulsion is added dropwise, and control
1~2h is dripped off, and then heats to 80~85 DEG C of 0.5~1h of heat preservation, then naturally cool to 40~50 DEG C, adjusting pH value to 7~9,
Sieving is to get basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion.
3. fireproof coating according to claim 2, which is characterized in that the nuclear monomer mixture and shell monomer mixture point
It is not made of soft monomer, hard monomer；Wherein, soft monomer is n-butyl acrylate, and hard monomer is methyl methacrylate；Nuclear monomer
Soft in mixture, hard monomer mass ratio is 2:1~5:1, and soft, hard monomer mass ratio is 3:1~1 in shell monomer mixture:
3。
4. fireproof coating according to claim 2, which is characterized in that the nuclear monomer mixture and shell monomer mixture
Mass ratio is 2:3~3:2.
5. fireproof coating according to claim 2, which is characterized in that gained basic zirconium phosphate accounts for nuclear monomer mixture and shell monomer
The 1~8% of mixture gross mass.
6. fireproof coating according to claim 2, which is characterized in that the cross-linking monomer is methacrylic acid, and crosslinking is single
Body accounts for the 1~10% of nuclear monomer mixture and shell monomer mixture gross mass.
7. fireproof coating according to claim 2, which is characterized in that the emulsifier is by anion emulsifier and nonionic
Emulsifier 1:3~3:1 in mass ratio composition；Anion emulsifier is the one of sodium dodecylbenzene or lauryl sodium sulfate
Kind, nonionic emulsifier is alkyl phenol polyoxyethylene ether, and emulsifier is 3~4% of soft or hard monomer gross mass in raw material.
8. fireproof coating according to claim 2, which is characterized in that the aqueous solution of buffer agent is sodium bicarbonate, phosphoric acid
One of sodium dihydrogen, buffer dosage are the 0.2~0.5% of nuclear monomer mixture and shell monomer mixture gross mass, buffering
The concentration of agent aqueous solution is 10~20wt%.
9. fireproof coating according to claim 2, which is characterized in that the initiator be potassium peroxydisulfate or ammonium persulfate,
Initiator amount is the 0.4~0.8% of nuclear monomer mixture and shell monomer mixture gross mass, the use of water in initiator solution
Amount is the 10~30% of nuclear monomer mixture and shell monomer mixture gross mass.
10. based on basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion described in any one of claim 1~9
The preparation method of fireproof coating, which comprises the steps of:
1) raw material is weighed according to the ratio, and each raw material and its shared mass percent include: that basic zirconium phosphate and methacrylic acid are composite modified
Acrylate core-shell latex 20~30%, ammonium polyphosphate 30~36%, pentaerythrite 10~20%, melamine 10~15%,
Titanium dioxide 1~5%, hydroxyethyl cellulose 0.5~1%, dispersing agent 0.5~1%, defoaming agent 0.5~1%, n-octyl alcohol 0.5~
1%, remaining is water；
2) weighed ammonium polyphosphate, pentaerythrite, melamine, titanium dioxide, hydroxyethyl cellulose are ground into powdery, then
Add water ground and mixed uniform；Defoaming agent and dispersing agent are added, continues to be fully ground；
3) basic zirconium phosphate and methacrylic acid compound modified acrylic ester core-shell emulsion are eventually adding and n-octyl alcohol is fully ground mixing
Uniformly to get the fireproof coating.
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| CN111234564A (en) * | 2020-03-10 | 2020-06-05 | 武汉工程大学 | Environment-friendly flame retardant and intumescent fire-retardant coating prepared from same |
| CN111363380A (en) * | 2020-03-14 | 2020-07-03 | 武汉工程大学 | Nano zirconium phosphate coated modified ammonium polyphosphate and intumescent fire retardant coating prepared from same |
| CN113817093A (en) * | 2021-09-28 | 2021-12-21 | 武汉工程大学 | Polyacrylate composite emulsion, fireproof coating, preparation method and application thereof |
| CN113968929A (en) * | 2020-09-17 | 2022-01-25 | 昆明理工大学 | Flame-retardant water-based acrylic composite resin and preparation method thereof |
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Application publication date: 20190510 |