CN112480758A - Separant for vacuum composite board and preparation and use methods thereof - Google Patents
Separant for vacuum composite board and preparation and use methods thereof Download PDFInfo
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- CN112480758A CN112480758A CN202011252607.0A CN202011252607A CN112480758A CN 112480758 A CN112480758 A CN 112480758A CN 202011252607 A CN202011252607 A CN 202011252607A CN 112480758 A CN112480758 A CN 112480758A
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- Prior art keywords
- separant
- release agent
- solution
- vacuum
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
Abstract
The invention relates to a separant for a vacuum composite board and a preparation method and a use method thereof, wherein the separant is prepared from the following raw materials in parts by weight: 500 portions of MgO powder with the MgO weight content being more than or equal to 95 percent; 10-15 parts of polyvinyl alcohol; 800 portions of purified water and 1200 portions. The invention has the advantages that: after the separant method developed by the invention is used in production, the product quality is greatly improved, the separation rate of the heterogeneous composite plate reaches 100%, the produced separant can meet the production process requirement of producing a heterogeneous composite blank by using a vacuum electron beam, the product stability is greatly improved, the preparation cost is low, the process is simple, and the mass production is easy.
Description
Technical Field
The invention belongs to the field of composite billet production, and relates to a separant for a vacuum composite plate and preparation and use methods thereof.
Background
The heterogeneous composite plate (such as stainless steel, titanium steel and the like) is used as a high-end product of a composite plate production line, and has high added value and vigorous market demand.
At present, in the process of producing heterogeneous composite boards by manufacturers at home and abroad, due to the difference of performances of different materials, direct compounding is not easy to combine, and the performance is unstable, so that the process of compounding and rolling symmetrical assemblies is generally adopted at present, and the basic scheme of the symmetrical assemblies is as follows: substrate- (transition layer) -composite board (release agent) - (release agent) composite board- (transition layer) -substrate. The symmetrical assembly mode inevitably uses the separant, the separant plays a role in separating the composite plate-composite plate interfaces in the rolling process, the two composite plate interfaces are prevented from being adhered, the smooth plate separation after rolling is ensured, meanwhile, the separant is required to have the advantages that the components contained in the separant can not be subjected to decomposition reaction at high temperature, at least, the decomposition reaction can not be performed in the heating process of a heating furnace, or volatile gas substances appear, the separant has high-temperature stability, good spreading performance and excellent adhesion performance at normal temperature, otherwise, the interface combination of heterogeneous composite plates is not good, and the production failure of the composite plates is caused. Therefore, the development of a qualified separant formula is very important for the production of heterogeneous composite blanks, and has a decisive effect on the quality and the performance of the heterogeneous composite blanks.
In the production and delivery processes of the prior stainless steel and titanium steel heterogeneous composite board, the qualification rate of the composite board is less than 10 percent due to the separant.
Because the formulation and use of the release agent are kept secret by various composite board production plants, the direct purchase cost is overhigh, the use effect is unstable, and the low-cost release agent meeting the large production requirement needs to be developed in order to meet the requirement of mass production supply.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the separant for the vacuum composite plate and the preparation and use methods thereof, which can effectively separate the composite plate-composite plate interfaces in the heterogeneous composite plate, prevent the adhesion between the composite plates and do not influence the combination effect of the composite material and the base material in the high-temperature heating and rolling processes.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the release agent for the vacuum composite board is prepared from the following raw materials in parts by weight:
500 portions of MgO powder with the MgO weight content being more than or equal to 95 percent;
10-15 parts of polyvinyl alcohol;
800 portions of purified water and 1200 portions.
The particle size of the MgO powder is not more than 6000 meshes.
The purity of the polyvinyl alcohol is more than 99.8 percent.
A preparation method of a release agent for a vacuum composite board comprises the following steps:
1) heating purified water in a container, measuring temperature, adding polyvinyl alcohol when the water temperature is 70-80 deg.C, heating the solution, keeping the temperature for 20-30min, and stirring with a stirrer to ensure no solid matter exists in the solution;
2) cooling the dissolved solution to room temperature in air;
3) mixing the solution obtained in the step 2) with MgO powder, and stirring the mixed solution for 3-5min by using a stirrer to ensure that the MgO powder is completely dissolved in the solution to form emulsion, thus obtaining the separant.
A use method of a release agent for a vacuum composite board comprises the following steps:
1) before smearing, within the width range of 5-15mm from the edge of the surface of the board to be smeared, using an adhesive tape for sticking protection, wherein the part is a non-separant smearing area, uniformly smearing separant on the surface of the rest area of the whole board, and uniformly smearing by adopting a spraying or brushing way, wherein the smearing thickness is 0.2-0.3 mm;
2) coating the two steel plate blanks with the release agent by the same coating method, placing the coated steel plate blanks in the air for more than or equal to 2 hours, then placing the steel plate blanks in a resistance furnace, setting the temperature of 100-200 ℃, heating for 0.5-1.5 hours, taking out the steel plate blanks to completely dry the release agent, removing the adhesive tape at the edge part after drying, and cleaning;
3) and (4) assembling, vacuum welding, heating, rolling, and finally, cutting edges and splitting to generate two composite steel plates.
Compared with the prior art, the invention has the beneficial effects that:
after the separant method developed by the invention is used in production, the product quality is greatly improved, the separation rate of the heterogeneous composite plate reaches 100%, the produced separant can meet the production process requirements of producing heterogeneous composite blanks (such as stainless steel composite blanks and titanium steel composite blanks) by using vacuum electron beams, the product stability is greatly improved, the preparation cost is low, the process is simple, and the mass production is easy.
Detailed Description
The present invention is described in detail below, but it should be noted that the practice of the present invention is not limited to the following embodiments.
The release agent for the vacuum composite board is prepared from the following raw materials in parts by weight:
500 portions of MgO powder with the MgO weight content being more than or equal to 95 percent;
10-15 parts of polyvinyl alcohol with the purity of more than 99.8%;
800 portions of purified water and 1200 portions.
The particle size of the MgO powder is not more than 6000 meshes.
A preparation method of a release agent for a vacuum composite board comprises the following steps:
1) heating purified water in a container, measuring temperature, adding polyvinyl alcohol when the water temperature is 70-80 deg.C, heating water, keeping the temperature for 20-30min, and stirring with a stirrer to ensure no solid matter exists in the solution;
2) cooling the dissolved solution to room temperature in air;
3) mixing the solution obtained in the step 2) with MgO powder according to the weight ratio (800-: (300-500) and stirring the mixed solution for 3-5min by using a stirrer to ensure that the MgO powder is completely dissolved in the solution to form emulsion, thus obtaining the separant.
A use method of a release agent for a vacuum composite board comprises the following steps:
1) before smearing, within the width range of 5-15mm from the edge of the surface of the board to be smeared, using an adhesive tape for sticking protection, wherein the part is a non-separant smearing area, uniformly smearing separant on the surface of the rest area of the whole board, and uniformly smearing by adopting a spraying or brushing way, wherein the smearing thickness is 0.2-0.3 mm;
2) coating the two steel plate blanks with the release agent by the same coating method, placing the coated steel plate blanks in the air for more than or equal to 2 hours, then placing the steel plate blanks in a resistance furnace, setting the temperature of 100-;
3) and (4) assembling, vacuum welding, heating, rolling, and finally, cutting edges and splitting to generate two composite steel plates.
Example 1
The separant for the titanium steel composite board and the preparation and use processes thereof are as follows:
1) the base blank uses two A36 steel plates with the size of 100 multiplied by 2270 multiplied by 3490mm, the composite material uses two titanium plates with the size of 25 multiplied by 2160 multiplied by 3380mm, and the surfaces of the titanium plates are acid-washed;
2) putting 10kg of clean water into a steel pot, heating the raw materials by using an induction cooker, adding 117g of polyvinyl alcohol when the water temperature is 70-80 ℃, boiling the water by using high power 2200kW, then preserving the heat for 30min by using low power 300kW small fire, and stirring the solution clockwise for 5min by using a stirrer when preserving the heat for 25min so as to completely melt the solid raw materials;
3) placing the dissolved solution to room temperature;
4) mixing 10kg of glue and 5.32kg of light MgO powder in proportion, putting the light MgO powder into the glue, and stirring the mixed solution by using a stirrer for 5min to ensure that the MgO powder is completely dissolved in the glue to form emulsion.
5) Wiping the surface of the titanium plate clean to ensure that the titanium plate is free from oil stain, dust and rust; using an adhesive tape to stick and protect the edge part of the surface of the titanium plate within the width range of 5-15mm, wherein the part is a non-separant spraying area;
6) spraying a release agent on the opposite surfaces of the two titanium plates, wherein the spraying thickness of the release agent is 0.3mm, and carefully tearing off the adhesive tape 1h after the release agent is sprayed; both the two blocks need to be sprayed, and the sprayed blocks are placed in the air for 24 hours, so that the separant is completely dried;
7) assembling the base blank, the titanium plate and the base blank in sequence; then carrying out vacuum welding, heating, rolling and plate separation to obtain a finished titanium steel composite blank, wherein the plate separation rate reaches 100%.
Example 2
The separant for the stainless steel composite board and the preparation and use processes thereof are as follows:
1) using two steel billets of stainless steel 316L and a continuous casting billet Q370Qe to carry out pack rolling assembly;
2) putting 15kg of clean water into a steel pot, adding 180g of polyvinyl alcohol, heating the ingredients by using an induction cooker, boiling the water by using a high-power 2200kW, then preserving the heat for 30min by using a low-power 400kW small fire, and stirring the solution clockwise for 5min when preserving the heat for 25min so as to completely dissolve the solid;
3) placing the dissolved solution to room temperature;
4) mixing 15kg of glue and 7.48kg of light MgO powder in proportion, and stirring the mixed solution by using a stirrer for 5min to ensure that the MgO powder is completely dissolved in the glue to form emulsion;
5) and (3) coating a release agent on the opposite surfaces of the two stainless steels (the width of 40mm at the edge part is a non-coating area, and the release agent is adhered by using an adhesive tape before coating), wherein the coating thickness of the release agent is 0.2-0.3mm, and the adhesive tape is peeled off 2h after the release agent is coated. Coating the two blocks, placing in air for 2.5h, placing in a resistance furnace, heating at 100 deg.C for 1h, and taking out to completely dry the separant;
6) assembling, vacuum welding, heating, rolling, splitting, cutting head and tail, and dividing into four sections to obtain 8 stainless steel heterogeneous composite steel plates with splitting rate up to 100%.
Claims (5)
1. The release agent for the vacuum composite board is characterized by being prepared from the following raw materials in parts by weight:
500 portions of MgO powder with the MgO weight content being more than or equal to 95 percent;
10-15 parts of polyvinyl alcohol;
800 portions of purified water and 1200 portions.
2. The release agent for vacuum composite panels as claimed in claim 1, wherein the particle size of MgO powder is not greater than 6000 mesh.
3. The release agent for vacuum composite panels as claimed in claim 1, wherein the purity of the polyvinyl alcohol is more than 99.8%.
4. The preparation method of the release agent for the vacuum composite board according to any one of claims 1 to 3, characterized by comprising the following steps:
1) heating purified water in a container, measuring temperature, adding polyvinyl alcohol when the water temperature is 70-80 deg.C, heating the solution, keeping the temperature for 20-30min, and stirring with a stirrer to ensure no solid matter exists in the solution;
2) cooling the dissolved solution to room temperature in air;
3) mixing the solution obtained in the step 2) with MgO powder, and stirring the mixed solution for 3-5min by using a stirrer to ensure that the MgO powder is completely dissolved in the solution to form emulsion, thus obtaining the separant.
5. The use method of the release agent for the vacuum composite panel according to any one of claims 1 to 3, characterized by comprising the following steps:
1) before smearing, within the width range of 5-15mm from the edge of the surface of the board to be smeared, using an adhesive tape for sticking protection, wherein the part is a non-separant smearing area, uniformly smearing separant on the surface of the rest area of the whole board, and uniformly smearing by adopting a spraying or brushing way, wherein the smearing thickness is 0.2-0.3 mm;
2) coating the two steel plate blanks with the release agent by the same coating method, placing the coated steel plate blanks in the air for more than or equal to 2 hours, then placing the steel plate blanks in a resistance furnace, setting the temperature of 100-200 ℃, heating for 0.5-1.5 hours, taking out the steel plate blanks to completely dry the release agent, removing the adhesive tape at the edge part after drying, and cleaning;
3) and (4) assembling, vacuum welding, heating, rolling, and finally, cutting edges and splitting to generate two composite steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252607.0A CN112480758A (en) | 2020-11-11 | 2020-11-11 | Separant for vacuum composite board and preparation and use methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252607.0A CN112480758A (en) | 2020-11-11 | 2020-11-11 | Separant for vacuum composite board and preparation and use methods thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112480758A true CN112480758A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011252607.0A Pending CN112480758A (en) | 2020-11-11 | 2020-11-11 | Separant for vacuum composite board and preparation and use methods thereof |
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| Country | Link |
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| CN (1) | CN112480758A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248372A (en) * | 2011-06-22 | 2011-11-23 | 河南盛荣特种钢业有限公司 | Method for producing single-sided composite stainless steel cold rolling base stock |
| CN102977703A (en) * | 2012-12-10 | 2013-03-20 | 云南昆钢新型复合材料开发有限公司 | Water-soluble barrier coating for laminated metal material |
| CN108373604A (en) * | 2016-11-02 | 2018-08-07 | 青岛国福实业有限公司 | A kind of environment-friendly type nano barrier coat |
| CN110802371A (en) * | 2019-10-21 | 2020-02-18 | 南京钢铁股份有限公司 | Spraying method of separating agent for pack-rolled thin plates |
| CN111715692A (en) * | 2020-06-28 | 2020-09-29 | 山西太钢不锈钢股份有限公司 | Manufacturing method for producing thin and wide super austenitic stainless steel middle plate by composite rolling |
-
2020
- 2020-11-11 CN CN202011252607.0A patent/CN112480758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248372A (en) * | 2011-06-22 | 2011-11-23 | 河南盛荣特种钢业有限公司 | Method for producing single-sided composite stainless steel cold rolling base stock |
| CN102977703A (en) * | 2012-12-10 | 2013-03-20 | 云南昆钢新型复合材料开发有限公司 | Water-soluble barrier coating for laminated metal material |
| CN108373604A (en) * | 2016-11-02 | 2018-08-07 | 青岛国福实业有限公司 | A kind of environment-friendly type nano barrier coat |
| CN110802371A (en) * | 2019-10-21 | 2020-02-18 | 南京钢铁股份有限公司 | Spraying method of separating agent for pack-rolled thin plates |
| CN111715692A (en) * | 2020-06-28 | 2020-09-29 | 山西太钢不锈钢股份有限公司 | Manufacturing method for producing thin and wide super austenitic stainless steel middle plate by composite rolling |
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| PB01 | Publication | ||
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Application publication date: 20210312 |
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| RJ01 | Rejection of invention patent application after publication |