CN109929433A - A kind of high-temperature resistant coating and its processing technology based on new material - Google Patents
A kind of high-temperature resistant coating and its processing technology based on new material Download PDFInfo
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Abstract
The invention discloses a kind of high-temperature resistant coating and its processing technology based on new material, in our industrial production, often there are many metal equipments for needing to work under high-temperature corrosion environment, metal equipment will be damaged using a period of time because of high temperature corrosion, therefore, a kind of high-temperature resistant coating and its processing technology based on new material is provided in the present invention, including organic silicone resin and epoxy resin, make compatilizer by γ-glycidol ether propyl trimethoxy silicane, modifying epoxy resin by organosilicon is prepared；Proportion design of the present invention is reasonable, process parameter optimizing, not only realize the preparation of high-temperature resistant coating, the caking property between coating and metallic matrix is also improved simultaneously, so that coating can be good at being attached on metallic matrix, the high temperature resistant of coating prepared by the present invention, wear-resisting, anti-aging, the performances such as corrosion-resistant are more outstanding, with high application prospect.
Description
Technical field
The present invention relates to filed of high temperature, specifically a kind of high-temperature resistant coating and its processing work based on new material
Skill.
Background technique
Organic siliconresin, a kind of polysiloxane of highly cross-linked reticular structure, usually with methyl trichlorosilane,
Dimethyldichlorosilane, phenyl trichlorosilane, diphenyl dichlorosilane or dichloromethyl phenylsilane various mixtures, having
In the presence of solvent such as toluene, hydrolyzable, obtains acidic hydrolysis object at a lower temperature, and hydrolysate removes acid through washing, in
First condensation polymer thermal oxide or further polycondensation in the presence of a catalyst in air of property, eventually forms highly cross-linked stereoscopic graticule
Network structure.
In our industrial production, often there are many metal equipment for needing to work under high-temperature corrosion environment, metals
Equipment will be damaged using a period of time because of high temperature corrosion, and organosilicon silver-colored its excellent performance and heat-resisting quantity, at
For the main direction of development of high-temperature coatings.
Nowadays we generally add epoxy resin modification in organic siliconresin, and obtained composite material can have been taken into account
The performance of the property of machine silicone resin and epoxy resin, coating is more excellent, but under study for action it was found that epoxy resin modification has
After machine silicone resin, the adhesive ability of obtained coating and basis material is poor, and phenomenon, service life are easily fallen off under high temperature
Short, this causes great inconvenience to us.
For above situation, we devise a kind of high-temperature resistant coating and its processing technology based on new material, this is me
One of urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of high-temperature resistant coating and its processing technology based on new material, it is existing to solve
The problems in technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of high-temperature resistant coating based on new material, the high-temperature resistant coating each raw material component are as follows: by weight, organosilicon tree
35-90 parts of rouge, 10-30 parts of epoxy resin, γ -8-20 parts of glycidol ether propyl trimethoxy silicane, 5-15 parts of filler, solvent
50-120 parts, 18-45 parts of additive.
In our industrial production, often there are many metal equipment for needing to work under high-temperature corrosion environment, metals
Equipment will be damaged using a period of time because of high temperature corrosion, it is provided in the present invention a kind of based on new material
High-temperature resistant coating and its processing technology pass through γ-glycidol ether propyl front three including organic silicone resin and epoxy resin
Oxysilane makees compatilizer, and modifying epoxy resin by organosilicon is prepared.
Compatibility is poor between organic siliconresin and epoxy resin, and γ-glycidol ether propyl trimethoxy silicane can
As compatilizer, the compatibility between organic siliconresin and epoxy resin is improved, improves two-phase interface state, reduces two-phase interface
Tension enables organic siliconresin to be uniformly kneaded with epoxy resin.
Organic siliconresin is to common are machine high-temperature resistant coating, and pure silicone resin coating is at high price, bad mechanical property,
Intermolecular force is weaker simultaneously, is allowed to be not easy to be fully cured, so we can generally select through epoxy resin to organosilicon
The advantages of resin is modified, and coating is enable to take into account organic siliconresin and epoxy resin completely, resistance to adhesive property is corrosion-resistant,
The performances such as water-fast are more excellent, although protruding into it was found that modifying epoxy resin by organosilicon is had excellent performance with research, but
The adhesion property of the coating and matrix that are prepared substantially reduces, and easily falls off phenomenon, and service life is shorter.
Then we devise additive, improve the adhesion between coating and metallic matrix by the addition of additive
Can, increase service life.
Optimally, the additive each raw material component is as follows: by weight, 8-30 parts of polypropylene, curing agent 15-35
Part, 3-10 parts of tetrahydrofuran, 3-6 parts of ammonium hydroxide, bis- amido hexichol of 4,4- are soughed 5-15 parts.
Why select γ-glycidol ether propyl trimethoxy silicane as compatilizer in the present invention, is because when me
Add tetrahydrofuran, ammonium hydroxide and 4, when bis- amido hexichol of 4- is soughed, γ-glycidol ether propyl trimethoxy silicane being capable of conduct
The silica of quasi-molecule level is prepared in presoma；Silicon dioxide granule has many as a kind of inorganic chemical industry material
Unique property can be improved anti-aging other materials, intensity and chemical-resistance, and being doped in organosilicon epoxy resin can
Greatly improve the heat resistance of material, but silicon dioxide granule is easy to reunite, when being blended with organosilicon epoxy resin dispersibility compared with
Difference, and silica is prepared by γ-glycidol ether propyl trimethoxy silicane in the present invention, not only increase silica
Compatibility between each component, while silica can be dispersed in resin.
Silica is realized and organosilicon by the coordinated soughed with tetrahydrofuran, ammonium hydroxide and 4, bis- amido hexichol of 4-
The blending of epoxy resin is prepared hybrid inorganic-organic materials, can effectively improve the glass transition temperature of coating in this way
Degree and thermal decomposition temperature, improve its heat resistance, while anti-aging property and rubber vulcanizate module also have biggish raising, so that preparation
The high temperature resistance of obtained coating is more excellent.
It is dissolved in the present invention using tetrahydrofuran, is because organic siliconresin, epoxy resin can be dissolved in tetrahydro furan
It in muttering, when preparing hybrid inorganic-organic materials, can uniformly and effectively be combined between each component, improve the property of entire coating
Energy.
Optimally, the curing agent includes nylon type polyamide and dimer acid type polyamide, the nylon type polyamide
Mass ratio with dimer acid type polyamide is 1:1.
In the present invention, curing agent is devised in additive, improves the high temperature resistance of coating, curing agent is by nylon type polyamides
What amine and dimer acid type polyamide blending were prepared, wherein nylon type polyamide and metal have good caking property, add
The adhesive force between coating and metallic matrix can be improved in nylon type polyamide, while nylon type polyamide has with aluminum oxide
More outstanding caking property, by add aluminum oxide, nylon type polyamide coordinated, using nylon type polyamide as
Crosslinking improves the adhesive force between coating and metallic matrix, coating is preferably attached on metallic matrix.
The addition of curing agent can greatly improve the viscosity of coating, and viscosity of the coating increase will lead in coating, Wu Fajun
Even is covered on metallic matrix, and the internal stress after solidification is larger, is easy cracking, while being also easy to remain more gas in coating
Bubble, we are added to polypropylene again thus, polyacrylic to add the viscosity that can be effectively reduced organosilicon epoxy resin, reduce it
Mobility improves the performance of coating, while again because the compatibility of polypropylene and organic siliconresin, epoxy resin is all bad, institute
To be doped with dimer acid type polyamide in curing agent, dimer acid type polyamide has preferable caking property, Neng Gouti to polypropylene
Compatibility between high polypropylene and each component, while the caking property between dimer acid type polyamide and metallic matrix is higher, energy
It is enough used as crosslinking agent, improves the adhesive force between coating and metallic matrix.
In present technology, nylon type polyamide and dimer acid type polyamide mostly separately as metal hot melt adhesive,
Applied to the connection of metal recess filled up between metal and metal, nylon type polyamide and dimerization are exactly utilized in the present invention
The caking property of acid type polyamide and metal, by the way that by nylon type polyamide and dimer acid type polyamide blending, what is be prepared consolidates
Agent combines the performance of nylon type polyamide and dimer acid type polyamide, all with aluminum oxide, polyacrylic caking property
It is more excellent, while compatibility is fine between nylon type polyamide and dimer acid type polyamide, also can uniformly be total between component
It is mixed；By aluminum oxide and polyacrylic cooperation, curing agent can be improved the adhesive force of coating and metallic matrix, in high temperature ring
More longer service life is kept in border.
Optimally, each raw material component of the nylon type polyamide is as follows: by weight, 5-10 parts of nylon salt, Buddhist nun
Imperial 25-40 parts of 1010 salt, 5-10 parts of stearic acid, 3-15 parts of caprolactam, 3-8 parts of antioxidant.
Optimally, the dimer acid type polyamide each raw material component is as follows: by weight, 5-15 parts of dimeric dibasic acid, the last of the ten Heavenly stems two
20-25 parts sour, 8-16 parts of ethylenediamine, 5-8 parts of piperazine.
The invention firstly uses dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazines to prepare dimer acid type polyamide, in synthesis dimerization
The initial reaction stage of acid type polyamide can generate a large amount of tiny and stable bubbles, increase the volume of reaction system acutely, so that
The whipping performance and dispersion performance of material are all not easy to control, and are easy to appear caking phenomenon, therefore we are added to piperazine, destroy body
Tiny and stable bubble structure in system so that reaction can stablize progress, while being also beneficial to uniform between each material
Dispersion, prevents the generation of caking phenomenon.
Optimally, the filler each raw material component is as follows: by weight, 5-10 parts of titanium dioxide, aluminum oxide 5-
10 parts；The solvent is one of toluene, dimethylbenzene or a variety of；The antioxidant is antioxidant 1010.
Filler is added in the present invention, including titanium dioxide, curing agent is evenly dispersed with island structure in component,
And titanium dioxide can play connection function, realize the connection between the island Dao Yu, realize toughening humidification, effectively improve coating
Wear-resisting property and mechanical property, avoid coating when in use because friction fail.
Simultaneously by the control to processing technology, curing agent, polypropylene can also polymerize with titanium dioxide blending, not only mention
The high wearability and anti-aging property of coating, while also making the coating being prepared that there is more excellent anti-microbial property, it mentions
The application range of high coating further increases the service life of coating.
Optimally, the organic siliconresin is methltriethoxysilone, dimethyl diethoxysilane, a phenyl
One of triethoxysilane；The epoxy resin is bisphenol F epoxy resin, hydrogenated bisphenol A epoxy resin, methylol bis-phenol
One of A type epoxy resin.
Optimally, a kind of processing technology of the high-temperature resistant coating based on new material, it is characterised in that: including following step
It is rapid:
1) prepare raw material；
2) preparation of curing agent；
3) melt blending obtains the high-temperature resistant coating.
Optimally, comprising the following steps:
1) prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, two are weighed in proportion
Titanium oxide, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- sough, nylon salt, nylon
1010 salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
2) preparation of curing agent:
A) preparation of dimer acid type polyamide: dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine are weighed in proportion, is placed in four-hole boiling flask
In, it is heated to 50-150 DEG C, 0.5-1h is reacted under 1-3MPa pressure, then be warming up to 200-240 DEG C, reacts 2-3h；It vacuumizes,
3-5h is reacted, pressure release is cooling, obtains dimer acid type polyamide；This step is anti-by dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine
It answers, the dimer acid type polyamide haveing excellent performance is prepared
B) preparation of nylon type polyamide: nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed, is placed in
In autoclave, 2-3h is reacted in heating under 1-2MPa pressure, and decompression dehydration is cooling, obtains nylon type polyamide；
C) the nylon type polyamide of the dimer acid type polyamide, step c) preparation that take step b) to prepare, is added double after mixing
Melt blending in screw extruder, cooling granulation obtain curing agent；
3) organic siliconresin for taking step 1) to prepare, solvent dissolution, opens stirring, adds 1/2 curing agent and epoxy resin, add
Heat reacts 3-4h, adds γ-glycidol ether propyl trimethoxy silicane to 120-130 DEG C, stirs, is cooled to room temperature, obtains
To material A；
4) material A for taking step 3) to prepare is added deionized water, is stirred at room temperature, then ammonium hydroxide stirring is slowly added dropwise, and removes upper layer
Tetrahydrofuran dissolution is added in liquid, is heated to 140-150 DEG C after mixing evenly, and heat preservation is warming up to 220-230 DEG C, adds 4,
Bis- amido hexichol of 4- is soughed, and is cooled to 130-140 DEG C, reacts 1-2h, then be warming up to 150-160 DEG C, reaction 3-4h, cooling granulation,
Obtain material B；
5) polypropylene, titanium dioxide, the aluminum oxide and remaining 1/2 of the material B, step 1) preparation that take step 4) to prepare are consolidated
Agent, vacuum drying, then puts into mechanical mixture in high-speed mixer, then put into melt blending in double screw extruder, then by object
Material is put into spheroidal graphite in ball mill, filters, obtains the high-temperature resistant coating.
Optimally, comprising the following steps:
1) prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, two are weighed in proportion
Titanium oxide, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- sough, nylon salt, nylon
1010 salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；It is carried out in this step former
The preparation of material is convenient for subsequent processing and preparation；
2) preparation of curing agent:
A) preparation of dimer acid type polyamide: dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine are weighed in proportion, is placed in four-hole boiling flask
In, it is heated to 50-150 DEG C, 0.5-1h is reacted under 1-3MPa pressure, then be warming up to 200-240 DEG C, reacts 2-3h；It vacuumizes
To 50-80MPa, 3-5h is reacted, pressure release is cooling, obtains dimer acid type polyamide；Pass through dimeric dibasic acid, decanedioic acid, second in this step
Diamines and piperazine complex reaction, realize the preparation of dimer acid type polyamide；
B) preparation of nylon type polyamide: nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed and is placed in height
It presses in reaction kettle, is warming up to 240-280 DEG C, 2-3h is reacted under 1-2MPa pressure, decompression dehydration is cooling, and it is poly- to obtain nylon type
Amide；The present invention realizes nylon type by nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant complex reaction
The preparation of polyamide；
C) the nylon type polyamide of the dimer acid type polyamide, step c) preparation that take step b) to prepare, is added double after mixing
Melt blending in screw extruder, the temperature of the twin (double) screw extruder are 200-300 DEG C, and cooling granulation obtains curing agent；This
Dimer acid type polyamide, nylon type polyamide are kneaded by step, curing agent are prepared, curing agent can take into account dimer acid type polyamides
The performance of both amine, nylon type polyamide, not only has preferable caking property to metal, while to aluminum oxide, polypropylene
Also part preferably caking property；
3) organic siliconresin for taking step 1) to prepare, solvent dissolution, opens stirring, adds 1/2 curing agent and epoxy resin, add
Heat reacts 3-4h to 120-130 DEG C, adds γ-glycidol ether propyl trimethoxy silicane, stirs 30-40min, cooling
To room temperature, material A is obtained；Compatilizer is served as by γ-glycidol ether propyl trimethoxy silicane in this step, is improved organic
The compatibility of silicone resin and epoxy resin prepares organosilicon epoxy resin；1/2 curing agent is added in this step, it is solid by reducing
The amount of agent reduces the viscosity influence to organosilicon epoxy resin, is handled convenient for subsequent；
4) material A for taking step 3) to prepare adds deionized water, stirs 3-4h at room temperature, then ammonium hydroxide is slowly added dropwise, and stirs 8-
10h removes supernatant liquid, and tetrahydrofuran dissolution is added, is heated to 140-150 DEG C after mixing evenly, keeps the temperature 10-15min, heating
It to 220-230 DEG C, adds 4,4-, bis- amido hexichol and soughs, be cooled to 130-140 DEG C, react 1-2h, then be warming up to 150-160
DEG C, 3-4h is reacted, cooling granulation obtains material B；The material A of preparation is prepared into quasi-molecule by ammonium hydroxide reaction in this step
Silica, while being dissolved using tetrahydrofuran, since organosilicon epoxy resin can also be dissolved in tetrahydrofuran, each group after dissolution
/ can be even closer combination, recycle 4,4-, bis- amido hexichol to sough and remove the tetrahydrofuran of part；
5) polypropylene, titanium dioxide, the aluminum oxide and remaining 1/2 of the material B, step 1) preparation that take step 4) to prepare are consolidated
Agent is dried in vacuo 8-10h, then puts into mechanical mixture 10-20min in high-speed mixer, then puts into double screw extruder and melt
Melt blending, the temperature of the double screw extruder is 230-250 DEG C, screw speed 90-100rmp；Material is put into ball milling again
Spheroidal graphite in machine, drum's speed of rotation 1000-1100rpm, filtering obtain the high-temperature resistant coating.It is poly- by addition in this step
Propylene, titanium dioxide, aluminum oxide, while remaining 1/2 curing agent is added, melt blending effectively increases material and gold
The cementability for belonging to matrix, improves the service life of coating；
Compared with prior art, the beneficial effects of the present invention are:
The invention firstly uses γ-glycidol ether propyl trimethoxy silicane, organic siliconresin and epoxy resin, are prepared
Modifying epoxy resin by organosilicon, improves the heat resistance of coating, the performances such as wearability and intensity, then with γ-glycidol ether propyl
Trimethoxy silane prepares the silica of quasi-molecule, passes through silica and modifying epoxy resin by organosilicon as presoma
It is blended, improves the comprehensive performance of coating；Simultaneously using the synergistic effect between curing agent, polypropylene and aluminum oxide, improve
Caking property and adhesive force between coating and metallic matrix.
The present invention provides a kind of high-temperature resistant coating and its processing technology based on new material, proportion design is reasonable, technique
Parameter optimization, not only realizes the preparation of high-temperature resistant coating, while also improving the caking property between coating and metallic matrix, makes
Obtaining coating can be good at being attached on metallic matrix, and the high temperature resistant of coating prepared by the present invention, wear-resisting, anti-aging are corrosion-resistant
Etc. performances it is more outstanding, it is with high application prospect.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1:
Prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, dioxy are weighed in proportion
Change titanium, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- are soughed, nylon salt, nylon 1010
Salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
The preparation of curing agent is carried out again: being weighed dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine in proportion first, is placed in four-hole boiling flask
In, 50 DEG C are heated to, 0.5h is reacted under 1MPa pressure, then is warming up to 200 DEG C, reacts 2h；It is evacuated to 50MPa, reacts 3h,
Pressure release is cooling, obtains dimer acid type polyamide；Nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed again,
It is placed in autoclave, is warming up to 240 DEG C, 2h is reacted under 1MPa pressure, decompression dehydration is cooling, obtains nylon type polyamides
Amine；Then dimer acid type polyamide, nylon type polyamide are taken, adds twin-screw extrude melt blending after mixing, institute
The temperature for stating twin (double) screw extruder is 200 DEG C, and cooling granulation obtains curing agent；
Organic siliconresin is taken again, and solvent dissolution opens stirring, adds 1/2 curing agent and epoxy resin, be heated to 120 DEG C, instead
3h is answered, γ-glycidol ether propyl trimethoxy silicane is added, 30min is stirred, is cooled to room temperature, obtains material A；Take object
Expect A, add deionized water, stir 3h at room temperature, then ammonium hydroxide is slowly added dropwise, stir 8-10h, remove supernatant liquid, tetrahydro is added
Furans dissolution, is heated to 140 DEG C after mixing evenly, keeps the temperature 10min, is warming up to 220 DEG C, adds 4,4-, bis- amido hexichol and sough,
130 DEG C are cooled to, reacts 1h, then be warming up to 150 DEG C, reacts 3h, cooling granulation obtains material B；Then material B, poly- third are taken
Alkene, titanium dioxide, aluminum oxide and remaining 1/2 curing agent are dried in vacuo 8h, then put into mechanical mixture in high-speed mixer
10-20min, then melt blending in double screw extruder is put into, the temperature of the double screw extruder is 230 DEG C, screw speed
For 90rmp；Material is put into spheroidal graphite in ball mill, drum's speed of rotation 1000rpm again, filtering obtains the high-temperature resistant coating.
In the present embodiment, high-temperature resistant coating each raw material component is as follows: by weight, 35 parts of organic siliconresin, epoxy resin
10 parts, γ -8 parts of glycidol ether propyl trimethoxy silicane, 5 parts of filler, 50 parts of solvent, 18 parts of additive.
Additive each raw material component is as follows: by weight, 8 parts of polypropylene, 15 parts of curing agent, 3 parts of tetrahydrofuran, ammonium hydroxide 3
Part, bis- amido hexichol of 4,4- are soughed 5 parts；Curing agent includes nylon type polyamide and dimer acid type polyamide, the nylon type polyamides
The mass ratio of amine and dimer acid type polyamide is 1:1；The each raw material component of nylon type polyamide is as follows: by weight, nylon66 fiber
5 parts of salt, 25 parts of Nylon-1010 Salt, 5 parts of stearic acid, 3 parts of caprolactam, 3 parts of antioxidant；Dimer acid type polyamide each raw material component
It is as follows: by weight, 5 parts of dimeric dibasic acid, 20 parts of decanedioic acid, 8 parts of ethylenediamine, 5 parts of piperazine.
Filler each raw material component is as follows: by weight, 5 parts of titanium dioxide, 5 parts of aluminum oxide；Solvent is toluene；Antioxygen
Agent is antioxidant 1010；Organic siliconresin is methltriethoxysilone；Epoxy resin is bisphenol F epoxy resin.
Embodiment 2:
Prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, dioxy are weighed in proportion
Change titanium, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- are soughed, nylon salt, nylon 1010
Salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
The preparation of curing agent is carried out again: being weighed dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine in proportion first, is placed in four-hole boiling flask
In, 100 DEG C are heated to, 0.8h is reacted under 2MPa pressure, then is warming up to 220 DEG C, reacts 2.5h；It is evacuated to 70MPa, is reacted
4h, pressure release is cooling, obtains dimer acid type polyamide；Nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxygen are weighed again
Agent is placed in autoclave, is warming up to 260 DEG C, and 2.5h is reacted under 1.5MPa pressure, and decompression dehydration is cooling, obtains nylon
Type polyamide；Then dimer acid type polyamide, nylon type polyamide are taken, adds twin-screw extrude melting after mixing altogether
Mixed, the temperature of the twin (double) screw extruder is 250 DEG C, and cooling granulation obtains curing agent；
Organic siliconresin is taken again, and solvent dissolution opens stirring, adds 1/2 curing agent and epoxy resin, be heated to 125 DEG C, instead
3.5h is answered, γ-glycidol ether propyl trimethoxy silicane is added, 35min is stirred, is cooled to room temperature, obtains material A；It takes
Material A adds deionized water, stirs 3.5h at room temperature, then ammonium hydroxide is slowly added dropwise, and stirs 9h, removes supernatant liquid, and tetrahydro is added
Furans dissolution, is heated to 145 DEG C after mixing evenly, keeps the temperature 13min, is warming up to 225 DEG C, adds 4,4-, bis- amido hexichol and sough,
135 DEG C are cooled to, reacts 1.5h, then be warming up to 155 DEG C, reacts 3.5h, cooling granulation obtains material B；Then it takes material B, gather
Propylene, titanium dioxide, aluminum oxide and remaining 1/2 curing agent are dried in vacuo 9h, then put into mechanical mixed in high-speed mixer
15min is closed, then puts into melt blending in double screw extruder, the temperature of the double screw extruder is 240 DEG C, and screw speed is
95rmp；Material is put into spheroidal graphite in ball mill, drum's speed of rotation 1050rpm again, filtering obtains the high-temperature resistant coating.
In the present embodiment, high-temperature resistant coating each raw material component is as follows: by weight, 60 parts of organic siliconresin, epoxy resin
20 parts, γ -16 parts of glycidol ether propyl trimethoxy silicane, 10 parts of filler, 80 parts of solvent, 30 parts of additive.
Additive each raw material component is as follows: by weight, 17 parts of polypropylene, 25 parts of curing agent, 7 parts of tetrahydrofuran, ammonium hydroxide 4
Part, bis- amido hexichol of 4,4- are soughed 10 parts；Curing agent includes nylon type polyamide and dimer acid type polyamide, the nylon type polyamides
The mass ratio of amine and dimer acid type polyamide is 1:1；The each raw material component of nylon type polyamide is as follows: by weight, nylon66 fiber
8 parts of salt, 34 parts of Nylon-1010 Salt, 8 parts of stearic acid, 12 parts of caprolactam, 5 parts of antioxidant；Each raw material group of dimer acid type polyamide
Divide as follows: by weight, 10 parts of dimeric dibasic acid, 23 parts of decanedioic acid, 13 parts of ethylenediamine, 6 parts of piperazine.
Filler each raw material component is as follows: by weight, 8 parts of titanium dioxide, 8 parts of aluminum oxide；Solvent is dimethylbenzene；It is anti-
Oxygen agent is antioxidant 1010；Organic siliconresin is dimethyl diethoxysilane；Epoxy resin is hydrogenated bisphenol A epoxy resin.
Embodiment 3:
Prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, dioxy are weighed in proportion
Change titanium, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- are soughed, nylon salt, nylon 1010
Salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
The preparation of curing agent is carried out again: being weighed dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine in proportion first, is placed in four-hole boiling flask
In, 150 DEG C are heated to, 1h is reacted under 3MPa pressure, then is warming up to 240 DEG C, reacts 3h；It is evacuated to 80MPa, reacts 5h,
Pressure release is cooling, obtains dimer acid type polyamide；Nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed again,
It is placed in autoclave, is warming up to 280 DEG C, 3h is reacted under 2MPa pressure, decompression dehydration is cooling, obtains nylon type polyamides
Amine；Then dimer acid type polyamide, nylon type polyamide are taken, adds twin-screw extrude melt blending after mixing, institute
The temperature for stating twin (double) screw extruder is 300 DEG C, and cooling granulation obtains curing agent；
Organic siliconresin is taken again, and solvent dissolution opens stirring, adds 1/2 curing agent and epoxy resin, be heated to 130 DEG C, instead
4h is answered, γ-glycidol ether propyl trimethoxy silicane is added, 40min is stirred, is cooled to room temperature, obtains material A；Take object
Expect A, add deionized water, stir 4h at room temperature, then ammonium hydroxide is slowly added dropwise, stir 10h, remove supernatant liquid, tetrahydro furan is added
It mutters dissolution, is heated to 150 DEG C after mixing evenly, keep the temperature 15min, be warming up to 230 DEG C, add 4,4-, bis- amido hexichol and sough, drop
Temperature reacts 2h to 140 DEG C, then is warming up to 160 DEG C, reacts 4h, and cooling granulation obtains material B；Then take material B, polypropylene,
Titanium dioxide, aluminum oxide and remaining 1/2 curing agent are dried in vacuo 10h, then put into mechanical mixture in high-speed mixer
10-20min, then melt blending in double screw extruder is put into, the temperature of the double screw extruder is 250 DEG C, screw speed
For 100rmp；Material is put into spheroidal graphite in ball mill, drum's speed of rotation 1100rpm again, filtering obtains the high temperature resistant and applies
Material.
In the present embodiment, high-temperature resistant coating each raw material component is as follows: by weight, 90 parts of organic siliconresin, epoxy resin
30 parts, γ -20 parts of glycidol ether propyl trimethoxy silicane, 15 parts of filler, 120 parts of solvent, 45 parts of additive.
Additive each raw material component is as follows: by weight, 30 parts of polypropylene, 35 parts of curing agent, 10 parts of tetrahydrofuran, ammonium hydroxide
6 parts, bis- amido hexichol of 4,4- soughs 15 parts；Curing agent includes nylon type polyamide and dimer acid type polyamide, and the nylon type is poly-
The mass ratio of amide and dimer acid type polyamide is 1:1；The each raw material component of nylon type polyamide is as follows: by weight, nylon
66 10 parts of salt, 40 parts of Nylon-1010 Salt, 10 parts of stearic acid, 15 parts of caprolactam, 8 parts of antioxidant；Each original of dimer acid type polyamide
Expect that component is as follows: by weight, 15 parts of dimeric dibasic acid, 25 parts of decanedioic acid, 16 parts of ethylenediamine, 8 parts of piperazine.
Filler each raw material component is as follows: by weight, 10 parts of titanium dioxide, 10 parts of aluminum oxide；Solvent be toluene and
The mixing liquid of dimethylbenzene；Antioxidant is antioxidant 1010；Organic siliconresin is in phenyltriethoxysilane；Epoxy resin
For methylol bisphenol A type epoxy resin.
Embodiment 4:
Prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, dioxy are weighed in proportion
Change titanium, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- are soughed, nylon salt, nylon 1010
Salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
The preparation of curing agent is carried out again: being weighed dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine in proportion first, is placed in four-hole boiling flask
In, 100 DEG C are heated to, 0.8h is reacted under 2MPa pressure, then is warming up to 220 DEG C, reacts 2.5h；It is evacuated to 70MPa, is reacted
4h, pressure release is cooling, obtains dimer acid type polyamide；Nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxygen are weighed again
Agent is placed in autoclave, is warming up to 260 DEG C, and 2.5h is reacted under 1.5MPa pressure, and decompression dehydration is cooling, obtains nylon
Type polyamide；Then dimer acid type polyamide, nylon type polyamide are taken, adds twin-screw extrude melting after mixing altogether
Mixed, the temperature of the twin (double) screw extruder is 250 DEG C, and cooling granulation obtains curing agent；
Organic siliconresin is taken again, and solvent dissolution opens stirring, adds 1/2 curing agent and epoxy resin, be heated to 125 DEG C, instead
3.5h is answered, γ-glycidol ether propyl trimethoxy silicane is added, 35min is stirred, is cooled to room temperature, obtains material A；It takes
Material A adds deionized water, stirs 3.5h at room temperature, then ammonium hydroxide is slowly added dropwise, and stirs 9h, removes supernatant liquid, and tetrahydro is added
Furans dissolution, is heated to 145 DEG C after mixing evenly, keeps the temperature 13min, is warming up to 225 DEG C, adds 4,4-, bis- amido hexichol and sough,
135 DEG C are cooled to, reacts 1.5h, then be warming up to 155 DEG C, reacts 3.5h, cooling granulation obtains the high-temperature resistant coating.
In the present embodiment, high-temperature resistant coating each raw material component is as follows: by weight, 60 parts of organic siliconresin, epoxy resin
20 parts, γ -16 parts of glycidol ether propyl trimethoxy silicane, 80 parts of solvent, 30 parts of additive.
Additive each raw material component is as follows: by weight, 25 parts of curing agent, 7 parts of tetrahydrofuran, 4 parts of ammonium hydroxide, 4,4- diamines
Base hexichol is soughed 10 parts；Curing agent includes nylon type polyamide and dimer acid type polyamide, the nylon type polyamide and dimeric dibasic acid
The mass ratio of type polyamide is 1:1；The each raw material component of nylon type polyamide is as follows: by weight, 8 parts of nylon salt, nylon
1010 34 parts of salt, 8 parts of stearic acid, 12 parts of caprolactam, 5 parts of antioxidant；Dimer acid type polyamide each raw material component is as follows: with weight
Meter, 10 parts of dimeric dibasic acid, 23 parts of decanedioic acid, 13 parts of ethylenediamine, 6 parts of piperazine.
Solvent is dimethylbenzene；Antioxidant is antioxidant 1010；Organic siliconresin is dimethyl diethoxysilane；Asphalt mixtures modified by epoxy resin
Rouge is hydrogenated bisphenol A epoxy resin.
Embodiment 5:
Prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, dioxy are weighed in proportion
Change titanium, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- are soughed, nylon salt, nylon 1010
Salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
Organic siliconresin is taken again, and solvent dissolution opens stirring, adds 1/2 curing agent and epoxy resin, be heated to 125 DEG C, instead
3.5h is answered, γ-glycidol ether propyl trimethoxy silicane is added, 35min is stirred, is cooled to room temperature, obtains material A；It takes
Material A adds deionized water, stirs 3.5h at room temperature, then ammonium hydroxide is slowly added dropwise, and stirs 9h, removes supernatant liquid, and tetrahydro is added
Furans dissolution, is heated to 145 DEG C after mixing evenly, keeps the temperature 13min, is warming up to 225 DEG C, adds 4,4-, bis- amido hexichol and sough,
135 DEG C are cooled to, reacts 1.5h, then be warming up to 155 DEG C, reacts 3.5h, cooling granulation obtains material B；Then it takes material B, gather
Propylene, titanium dioxide, aluminum oxide and remaining 1/2 curing agent are dried in vacuo 9h, then put into mechanical mixed in high-speed mixer
15min is closed, then puts into melt blending in double screw extruder, the temperature of the double screw extruder is 240 DEG C, and screw speed is
95rmp；Material is put into spheroidal graphite in ball mill, drum's speed of rotation 1050rpm again, filtering obtains the high-temperature resistant coating.
In the present embodiment, high-temperature resistant coating each raw material component is as follows: by weight, 60 parts of organic siliconresin, epoxy resin
20 parts, γ -16 parts of glycidol ether propyl trimethoxy silicane, 10 parts of filler, 80 parts of solvent, 30 parts of additive.
Additive each raw material component is as follows: by weight, 17 parts of polypropylene, 25 parts of curing agent, 7 parts of tetrahydrofuran, ammonium hydroxide 4
Part, bis- amido hexichol of 4,4- are soughed 10 parts；Curing agent is nylon type polyamide；Filler each raw material component is as follows: by weight, dioxy
Change 8 parts of titanium, 8 parts of aluminum oxide；Solvent is dimethylbenzene；Antioxidant is antioxidant 1010；Organic siliconresin is dimethyl diethyl
Oxysilane；Epoxy resin is hydrogenated bisphenol A epoxy resin.
Experiment:
The coating of Example 1-5 preparation respectively, then the common organosilicon epoxy resin coating bought in the market is taken, it carries out respectively
It detects below, and records testing number.
The test of viscosity is carried out referring to " GB/T1723 "；The test of drying time is carried out referring to " GB/T1728 "；Adhesive force
Test is carried out referring to " GB/T9286 ", and impact resistance test is carried out referring to " GB/T1732 "；Heat resistance test is referring to " GB/
T1735 " it carries out；Acid resistance and alkali resistance test are carried out referring to " GB/T9274 "；Salt fog resistance test referring to " GB/T1771 " into
Row.
| Project | Adhesive force (grade) | Heat resistance (DEG C) | Acid resistance (5%H2SO4) | Alkali resistance (5%NaOH) | Viscosity |
| Embodiment 1 | 1 | 400 DEG C of 5h crackings are not fallen off | 98h | 103h | 28 |
| Embodiment 2 | 1 | 400 DEG C of 5h crackings are not fallen off | 113h | 112h | 25 |
| Embodiment 3 | 1 | 400 DEG C of 5h crackings are not fallen off | 95h | 97h | 29 |
| Embodiment 4 | 1 | 400 DEG C of 5h crackings are not fallen off | 92h | 95h | 50 |
| Embodiment 5 | 2 | 400 DEG C of 5h crackings are not fallen off | 98h | 99h | 32 |
| Common coating | 2 | 300 DEG C of 5h crackings are not fallen off | 68h | 74h | 50 |
Embodiment 1-3 is technical solution of the present invention, without addition filler and polypropylene in embodiment 4, embodiment 4 and real
It applies a 1-5 and is respectively formed control experiment, other influences parameter constant；Curing agent is respectively nylon type polyamide in embodiment 1-4
Mixed with dimer acid type polyamide, and curing agent has selected nylon type polyamide in embodiment 5, embodiment 5 respectively with embodiment
In contrast 1-4 is tested；
By upper table data it is found that the adhesive force of embodiment 1-4 is apparently higher than embodiment 5 and common coating, used in embodiment 1-4
Curing agent be that nylon type polyamide and dimer acid type polyamide mix, curing agent only used nylon type polyamides in embodiment 5
Amine, this, which has been absolutely proved in the technical program, is designed as nylon type polyamide and dimer acid type polyamide mixing for curing agent, changes
Coating and Metal Substrate can be improved by curing agent and aluminum oxide, polyacrylic synergistic effect into the formula of curing agent
The adhesive force of body keeps more longer service life in the high temperature environment.
Meanwhile the viscosity of embodiment 1-3, embodiment 5 is clearly lower than the viscosity number of embodiment 4, embodiment 1-3, implements
It is added to polypropylene in example 5, and is compared by viscosity data it is found that polyacrylic addition in embodiment 4 without addition polypropylene
The viscosity of coating can be reduced, performance is improved；
By upper table data it is found that heat resistance, the corrosion resistance of embodiment 1-5 China are superior to common coating, this is absolutely proved
γ-glycidol ether propyl trimethoxy silicane, organic siliconresin and epoxy resin is utilized in the present invention, and organosilicon is prepared
Modified epoxy improves the heat resistance of coating, the performances such as wearability and intensity, while utilizing curing agent, polypropylene and three oxygen
Change the synergistic effect between two aluminium, improves caking property and adhesive force between coating and metallic matrix；Coating is reduced simultaneously
Viscosity, proportion rationally, improve technological parameter, practicability with higher.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
Claims (10)
1. a kind of high-temperature resistant coating based on new material, it is characterised in that: the high-temperature resistant coating each raw material component is as follows: with weight
Meter, 35-90 parts of organic siliconresin, 10-30 parts of epoxy resin, γ -8-20 parts of glycidol ether propyl trimethoxy silicane are filled out
Expect 5-15 parts, 50-120 parts of solvent, 18-45 parts of additive.
2. a kind of high-temperature resistant coating based on new material according to claim 1, it is characterised in that: each original of additive
Expect that component is as follows: by weight, 8-30 parts of polypropylene, 15-35 parts of curing agent, 3-10 parts of tetrahydrofuran, 3-6 parts of ammonium hydroxide, 4,4-
Two amido hexichol are soughed 5-15 parts.
3. a kind of high-temperature resistant coating based on new material according to claim 2, it is characterised in that: the curing agent includes
The mass ratio of nylon type polyamide and dimer acid type polyamide, the nylon type polyamide and dimer acid type polyamide is 1:1.
4. a kind of high-temperature resistant coating based on new material according to claim 3, it is characterised in that: the nylon type polyamides
The each raw material component of amine is as follows: by weight, 5-10 parts of nylon salt, 25-40 parts of Nylon-1010 Salt, 5-10 parts of stearic acid, oneself
3-15 parts of lactams, 3-8 parts of antioxidant.
5. a kind of high-temperature resistant coating based on new material according to claim 4, it is characterised in that: the dimer acid type is poly-
Amide each raw material component is as follows: by weight, 5-15 parts of dimeric dibasic acid, 20-25 parts of decanedioic acid, 8-16 parts of ethylenediamine, piperazine 5-8
Part.
6. a kind of high-temperature resistant coating based on new material according to claim 5, it is characterised in that: each raw material of filler
Component is as follows: by weight, 5-10 parts of titanium dioxide, 5-10 parts of aluminum oxide；The solvent is toluene, one in dimethylbenzene
Kind is a variety of；The antioxidant is antioxidant 1010.
7. a kind of high-temperature resistant coating based on new material according to claim 6, it is characterised in that: the organic siliconresin
For one of methltriethoxysilone, dimethyl diethoxysilane, phenyltriethoxysilane；The asphalt mixtures modified by epoxy resin
Rouge is one of bisphenol F epoxy resin, hydrogenated bisphenol A epoxy resin, methylol bisphenol A type epoxy resin.
8. a kind of processing technology of the high-temperature resistant coating based on new material, it is characterised in that: the following steps are included:
1) prepare raw material；
2) preparation of curing agent；
3) melt blending obtains the high-temperature resistant coating.
9. a kind of processing technology of high-temperature resistant coating based on new material according to claim 8, it is characterised in that: including
Following steps:
1) prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, two are weighed in proportion
Titanium oxide, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- sough, nylon salt, nylon
1010 salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
2) preparation of curing agent:
A) preparation of dimer acid type polyamide: dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine are weighed in proportion, is placed in four-hole boiling flask
In, it is heated to 50-150 DEG C, 0.5-1h is reacted under 1-3MPa pressure, then be warming up to 200-240 DEG C, reacts 2-3h；It vacuumizes,
3-5h is reacted, pressure release is cooling, obtains dimer acid type polyamide；
B) preparation of nylon type polyamide: nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed, is placed in
In autoclave, 2-3h is reacted in heating under 1-2MPa pressure, and decompression dehydration is cooling, obtains nylon type polyamide；
C) the nylon type polyamide of the dimer acid type polyamide, step c) preparation that take step b) to prepare, is added double after mixing
Melt blending in screw extruder, cooling granulation obtain curing agent；
3) organic siliconresin for taking step 1) to prepare, solvent dissolution, opens stirring, adds 1/2 curing agent and epoxy resin, add
Heat reacts 3-4h, adds γ-glycidol ether propyl trimethoxy silicane to 120-130 DEG C, stirs, is cooled to room temperature, obtains
To material A；
4) material A for taking step 3) to prepare is added deionized water, is stirred at room temperature, then ammonium hydroxide stirring is slowly added dropwise, and removes upper layer
Tetrahydrofuran dissolution is added in liquid, is heated to 140-150 DEG C after mixing evenly, and heat preservation is warming up to 220-230 DEG C, adds 4,
Bis- amido hexichol of 4- is soughed, and is cooled to 130-140 DEG C, reacts 1-2h, then be warming up to 150-160 DEG C, reaction 3-4h, cooling granulation,
Obtain material B；
5) polypropylene, titanium dioxide, the aluminum oxide and remaining 1/2 of the material B, step 1) preparation that take step 4) to prepare are consolidated
Agent, vacuum drying, then puts into mechanical mixture in high-speed mixer, then put into melt blending in double screw extruder, then by object
Material is put into spheroidal graphite in ball mill, filters, obtains the high-temperature resistant coating.
10. a kind of processing technology of high-temperature resistant coating based on new material according to claim 9, it is characterised in that: packet
Include following steps: the following steps are included:
1) prepare raw material；Organic siliconresin, epoxy resin, γ-glycidol ether propyl trimethoxy silicane, two are weighed in proportion
Titanium oxide, aluminum oxide, solvent, polypropylene, tetrahydrofuran, ammonium hydroxide, bis- amido hexichol of 4,4- sough, nylon salt, nylon
1010 salt, stearic acid, caprolactam, antioxidant, dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine, it is spare；
2) preparation of curing agent:
A) preparation of dimer acid type polyamide: dimeric dibasic acid, decanedioic acid, ethylenediamine and piperazine are weighed in proportion, is placed in four-hole boiling flask
In, it is heated to 50-150 DEG C, 0.5-1h is reacted under 1-3MPa pressure, then be warming up to 200-240 DEG C, reacts 2-3h；It vacuumizes
To 50-80MPa, 3-5h is reacted, pressure release is cooling, obtains dimer acid type polyamide；
B) preparation of nylon type polyamide: nylon salt, Nylon-1010 Salt, stearic acid, caprolactam, antioxidant are weighed, is placed in
In autoclave, it is warming up to 240-280 DEG C, 2-3h is reacted under 1-2MPa pressure, decompression dehydration is cooling, obtains nylon type
Polyamide；
C) the nylon type polyamide of the dimer acid type polyamide, step c) preparation that take step b) to prepare, is added double after mixing
Melt blending in screw extruder, the temperature of the twin (double) screw extruder are 200-300 DEG C, and cooling granulation obtains curing agent；
3) organic siliconresin for taking step 1) to prepare, solvent dissolution, opens stirring, adds 1/2 curing agent and epoxy resin, add
Heat reacts 3-4h to 120-130 DEG C, adds γ-glycidol ether propyl trimethoxy silicane, stirs 30-40min, cooling
To room temperature, material A is obtained；
4) material A for taking step 3) to prepare adds deionized water, stirs 3-4h at room temperature, then ammonium hydroxide is slowly added dropwise, and stirs 8-
10h removes supernatant liquid, and tetrahydrofuran dissolution is added, is heated to 140-150 DEG C after mixing evenly, keeps the temperature 10-15min, heating
It to 220-230 DEG C, adds 4,4-, bis- amido hexichol and soughs, be cooled to 130-140 DEG C, react 1-2h, then be warming up to 150-160
DEG C, 3-4h is reacted, cooling granulation obtains material B；
5) polypropylene, titanium dioxide, the aluminum oxide and remaining 1/2 of the material B, step 1) preparation that take step 4) to prepare are consolidated
Agent is dried in vacuo 8-10h, then puts into mechanical mixture 10-20min in high-speed mixer, then puts into double screw extruder and melt
Melt blending, the temperature of the double screw extruder is 230-250 DEG C, screw speed 90-100rmp；Material is put into ball milling again
Spheroidal graphite in machine, drum's speed of rotation 1000-1100rpm, filtering obtain the high-temperature resistant coating.
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