Expanded epoxy fireproof coating and preparation method thereof
Technical field:
The present invention relates to technical field of paint preparation more particularly to a kind of expanded epoxy fireproof coating and its preparation sides
Method.
Background technique:
Country's fireproof coating primary categories have at present: 1. solvent-type acrylic coating;2. water-borne acrylic type fireproof coating;
3. solvent type epoxy fireproof coating.
The main raw material of the above are acrylic resin or lotion, bisphenol A epoxide resin, ammonium polyphosphate, polyphosphoric acid
Melamine, pentaerythritol phosphate etc..
And actual conditions are: 1, aqueous fire-proof coating water resistance is bad, if disposable overweight coating, is easy to produce out
It splits;The adhesive force of acrylic compounds fireproof coating is bad, and water resistance is not outstanding enough, generally also just at 168 hours, and due to containing
Solvent, solvent-type acrylic fireproof coating slow drying speed once thick cannot apply, when coating reaches 1mm (every time), when dry
Between be up to 1 week;2, general epoxy resin fireproof coating solid content is not high, and water resistance is ideal not enough, due to containing solvent,
It can not realize primary thick painting;3, relatively thin fireproof paint coating cannot reach the longer fire prevention time;4, above-mentioned except aqueous anti-
Other than fiery coating, other solvent type fireproof coatings are due to containing solvent, so the compatibility with anti-corrosion primer is not ideal enough, often
The volatilization of Chang Yinwei solvent is slow and priming paint is caused to be swollen " lifting ".
Summary of the invention:
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of expanded epoxy fireproof coating and its preparation side
Method can be improved Properties of Fire-Proofing Coatings, improve weather proof performance, improves coating mechanical strength and water resistance, improvement are applied
Work performance realizes primary thick painting, improves the compatibility with steel primer coating.
The present invention is achieved through the following technical solutions:
A kind of expanded epoxy fireproof coating, is made from the following raw materials in parts by weight:
First component: epoxy resin 20-40%, expanded graphite 3-5%, graphene 0.1-0.5%, molybdenum trioxide 1-1.5%,
Ceramic fibre 7-17%, triphenyl phosphate 1-3%, coupling agent 0.2-0.7%;
Second component: polyamide 20-30%, aliphatic amine adducts 10-15%, ammonium polyphosphate 18-25%, polyphosphoric acid three
Poly cyanamid 9-13%, pentaerythritol phosphate 10-15%, carbon fiber 1-3%.
In a preferred embodiment of the present invention, the first component, second component proportion are 2.5:1.
In order to reduce system overall viscosity and viscosity resistance, guarantee the performance of coating, epoxy resin of the invention is preferably
Cycloaliphatic epoxy resin 5-10%, bisphenol F epoxy resin 5-10% and modifying epoxy resin by organosilicon 10%-20%.
Preferably, the coupling agent is titanate coupling agent;The ammonium polyphosphate be high polymerization degree APP, n >=
1000;The polyamide is low-molecular-weight polyamide resin.
The present invention also provides a kind of preparation methods of expanded epoxy fireproof coating, include the following steps:
(1) it disperses quantitative graphite alkene in cycloaliphatic epoxy resin, coupling agent, ultrasonic vibration is added dropwise;
(2) quantitative expanded graphite, molybdenum trioxide are put into bisphenol F epoxy resin, is ground, is added above-mentioned steps (1)
Slurry is stirring evenly and then adding into quantitative triphenyl phosphate, ammonium polyphosphate, polyphosphoric acid melamine and silicon-modified epoxy tree
Then rouge, high speed dispersion reduce revolving speed, be slowly added into ceramic fibre, stir evenly, and obtain first component;
(3) quantitative polyamide, aliphatic amine adducts are placed in kettle and are stirred evenly, be slowly added into quantitative polyphosphoric acid
Ammonium, polyphosphoric acid melamine, pentaerythritol phosphate, then high-speed stirred is uniform;
(4) kneader is added in the material for mixing step (3), is slowly added into carbon fiber and mediates uniformly, obtains second component;
(5) first component, second component are mixed in proportion, trowelling on the steel plate, completes processing.
Wherein, the aliphatic amine adducts are made using following technique:
100 parts of polyethylene polyamine are placed in reaction kettle, is dissolved in 25 parts of ethylene glycol ethyl ethers and is heated to 70-120 DEG C, kettle connects
Condenser reflux is slowly added dropwise 10 parts of difunctional epoxide resin reactive diluent, tertiary amines promotor is added dropwise after reaction 1 hour
2 parts of (such as DMP-30) continues to be stirred to react 30 minutes, vacuumizes removing ethylene glycol ethyl ether, and cooling is spare.
The beneficial effect of expanded epoxy fireproof coating of the present invention and preparation method thereof is:
1, for present solvent based coating, it is changed to no-solvent type coating, environmentally friendly, dry solidification ungauged regions are real
Now primary thick painting;
2, by the curing agent of addition compounding, greatly improve fireproof coating water resistance,;
3, by compounding cycloaliphatic epoxy resin, improve fire resistant coating ageing-resistant performance;
4, organosilicon material is blended by physics, improves the intensity of fireproof coating foaming layer, the impact of flame is resisted in enhancing
Power.
Specific embodiment:
The preferred embodiments of the present invention will be described in detail below, so that advantages and features of the invention can be easier to by this
Field personnel understanding, so as to make a clearer definition of the protection scope of the present invention.
Embodiment 1:
(1) by 0.2 part of graphene dispersion in 8.6 parts of cycloaliphatic epoxy resins, 0.4 part of titanate coupling agent is added dropwise, surpasses
Acoustic shock is swung;
(2) 4.6 parts of expanded graphites, 1.3 parts of molybdenum trioxides are put into 9.2 parts of bisphenol F epoxy resins, is ground to 50 μm
Hereinafter, above-mentioned steps (1) slurry is added, it is stirring evenly and then adding into 1.8 portions of triphenyl phosphates, 24.1 parts of ammonium polyphosphate, 11.0 parts
Polyphosphoric acid melamine and 18.9 parts of modifying epoxy resin by organosilicon, high speed dispersion, then reduce revolving speed to 300 turns, slowly plus
Enter 14.1 parts of ceramic fibres, stir evenly, obtains first component;
(3) 27.9 parts of low-molecular-weight polyamide resins, 14.3 parts of aliphatic amine adducts are placed in kettle and are stirred evenly, slowly
24.7 parts of ammonium polyphosphate, 12.0 parts of polyphosphoric acid melamines, 14.5 parts of pentaerythritol phosphates are added, then high-speed stirred is equal
It is even;
(4) kneader is added in the material for mixing step (3), is slowly added into 2.4 parts of carbon fibers and mediates uniformly, obtains second group
Point;
(5) first component, second component are mixed by 2.5:1, on the steel plate with perching knife trowelling.
Its various performance parameters is as follows:
Embodiment 2:
(1) by 0.4 part of graphene dispersion in 9.1 parts of cycloaliphatic epoxy resins, 0.6 part of titanate coupling agent is added dropwise, surpasses
Acoustic shock is swung;
(2) 3.9 parts of expanded graphites, 1.2 parts of molybdenum trioxides are put into 8.7 parts of bisphenol F epoxy resins, is ground to 50 μm
Hereinafter, above-mentioned steps (1) slurry is added, it is stirring evenly and then adding into 2.6 portions of triphenyl phosphates, 23.9 parts of ammonium polyphosphate, 11.5 parts
Polyphosphoric acid melamine and 19.2 parts of modifying epoxy resin by organosilicon, high speed dispersion, then reduce revolving speed to 300 turns, slowly plus
Enter 14.8 parts of ceramic fibres, stir evenly, obtains first component;
(3) 29.5 parts of low-molecular-weight polyamide resins, 13.2 parts of aliphatic amine adducts are placed in kettle and are stirred evenly, slowly
21.9 parts of ammonium polyphosphate, 12.7 parts of polyphosphoric acid melamines, 14.2 parts of pentaerythritol phosphates are added, then high-speed stirred is equal
It is even;
(4) kneader is added in the material for mixing step (3), is slowly added into 2.9 parts of carbon fibers and mediates uniformly, obtains second group
Point;
(5) first component, second component are mixed by 2.5:1, on the steel plate with perching knife trowelling.
Its various performance parameters is as follows:
Embodiment 3:
(1) by 0.1 part of graphene dispersion in 5 parts of cycloaliphatic epoxy resins, 0.2 part of titanate coupling agent is added dropwise, ultrasound
Concussion;
(2) 3 parts of expanded graphites, 1 part of molybdenum trioxide are put into 5 parts of bisphenol F epoxy resins, be ground to 50 μm hereinafter,
Above-mentioned steps (1) slurry is added, is stirring evenly and then adding into 1 portion of triphenyl phosphate, 20 parts of ammonium polyphosphate, 10 parts of polyphosphoric acid melamines
Then amine and 10 parts of modifying epoxy resin by organosilicon, high speed dispersion reduce revolving speed to 300 turns, are slowly added into 7 parts of ceramic fibres,
It stirs evenly, obtains first component;
(3) 20 parts of low-molecular-weight polyamide resins, 10 parts of aliphatic amine adducts are placed in kettle and are stirred evenly, be slowly added into
18 parts of ammonium polyphosphate, 9 parts of polyphosphoric acid melamines, 10 parts of pentaerythritol phosphates, then high-speed stirred is uniform;
(4) kneader is added in the material for mixing step (3), is slowly added into 1 part of carbon fiber and mediates uniformly, obtains second group
Point;
(5) first component, second component are mixed by 2.5:1, on the steel plate with perching knife trowelling.
Its various performance parameters is as follows:
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.