CN110003698B - Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing - Google Patents
Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing Download PDFInfo
- Publication number
- CN110003698B CN110003698B CN201910299896.0A CN201910299896A CN110003698B CN 110003698 B CN110003698 B CN 110003698B CN 201910299896 A CN201910299896 A CN 201910299896A CN 110003698 B CN110003698 B CN 110003698B
- Authority
- CN
- China
- Prior art keywords
- gel coat
- dispersion liquid
- mass
- radome
- coat resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Details Of Aerials (AREA)
Abstract
A preparation method of high weather-resistant hydrophobic gel coat resin for an antenna housing relates to a preparation method of gel coat resin. The invention aims to solve the technical problems of low weather resistance and low hydrophobic property of the existing gel coat resin for the antenna housing. The preparation method comprises the following steps: firstly, preparing ultraviolet absorbent dispersion liquid; secondly, preparing an anti-mould aid dispersion liquid; and thirdly, adding polytetrafluoroethylene powder into the m-phenyl neopentyl glycol type gel coat, and then adding an ultraviolet absorbent dispersion liquid and an anti-mildew aid dispersion liquid. The high weather-resistant hydrophobic gel coat resin for the radome is used as a high weather-resistant hydrophobic coating on the surface of the radome. The antenna housing composite material sample with the surface being the gel coat coating prepared by the invention is hydrophobic, the dielectric constant is 3, the hydrophobicity cannot be reduced after a manual 1000-hour solar radiation test, the antenna housing composite material has excellent wear-resistant and scratch-resistant performance and better weather resistance, and the ultraviolet-resistant and anti-mildew properties of the gel coat on the surface of the antenna housing are improved.
Description
Technical Field
The invention relates to a preparation method of gel coat resin.
Background
Radomes are an important component of radar systems, called the "electromagnetic window" of the radar system. The ground radome is mostly made of glass fiber reinforced resin matrix composite materials, and the outer surface of the ground radome is covered with a gel coat resin protective layer, so that the ground radome has the functions of isolating the external natural environment from a composite material matrix, avoiding the solar radiation, salt fog, mould, rain, snow, damp and hot, sand and dust and the like, and delaying the aging of the composite material of the inner layer. Meanwhile, under the condition of rainy and snowy weather, the thickness of a water film on the surface of the antenna housing can directly influence the transmission loss performance of the antenna, and the hydrophobic property of the surface of the gel coat is an important index to be ensured.
The selection and modification of the surface gel coat material of the radome must also consider the weather resistance, wave permeability, adhesive force and the like of the coating, and the common gel coats at present comprise phthalic acid polyester gel coat, m-phenyl neopentyl glycol type polyester gel coat, vinyl ester type polyester gel coat and the like, but the weather resistance, hydrophobicity and discoloration prevention of the materials can not completely meet the performance requirements of radomes, so that the application of radomes products is limited.
Disclosure of Invention
The invention provides a preparation method of a high weather-resistant hydrophobic gel coat resin for an antenna housing, aiming at solving the technical problems of low weather-resistant performance and low hydrophobic performance of the existing gel coat resin for the antenna housing.
The preparation method of the high weather-resistant hydrophobic gel coat resin for the antenna housing is carried out according to the following steps:
firstly, adding 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole into styrene, and performing ultrasonic dispersion to obtain an ultraviolet absorbent dispersion liquid; the mass of the 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is 30 to 35 percent of that of styrene;
secondly, adding dichlorooctyl isothiazolinone into styrene, and mechanically stirring until the dichlorooctyl isothiazolinone is uniformly dispersed to obtain an antifungal assistant dispersion liquid; the mass of the dichloro octyl isothiazolinone is 50 to 55 percent of that of the styrene;
adding polytetrafluoroethylene powder into the m-phenyl neopentyl glycol type gel coat, uniformly dispersing by using a grinder, adding the ultraviolet absorbent dispersion liquid obtained in the step one and the anti-mould aid dispersion liquid obtained in the step two, and mechanically stirring until the ultraviolet absorbent dispersion liquid and the anti-mould aid dispersion liquid are uniformly dispersed to obtain the high weather-resistant hydrophobic gel coat resin for the radome;
the mass of the polytetrafluoroethylene powder is 3-4% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the ultraviolet absorbent dispersion liquid is 0.4-0.5% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the mildew-proof auxiliary agent dispersion liquid is 0.5-0.6% of that of the m-phenyl neopentyl glycol type gel coat.
The high weather-resistant hydrophobic gel coat resin for the radome is used as a high weather-resistant hydrophobic coating on the surface of the radome.
The high weather-resistant hydrophobic gel coat resin for the radome is used for preparing a high weather-resistant hydrophobic coating on the surface of the radome, and the process for preparing the coating is as follows:
the method comprises the steps of coating a mold release agent on the surface of a mold, mixing the prepared antenna housing with high weather-proof hydrophobic gel coat resin and methyl ethyl ketone peroxide, spraying the mixture on the surface of the mold, standing and curing at normal temperature, paving glass fiber cloth in the mold according to the design thickness of the antenna housing wall, obtaining the antenna housing by adopting a vacuum assisted resin transfer molding process, and opening the mold to obtain an antenna housing composite material sample with the surface being a gel coat.
The invention has the following beneficial effects:
1. according to the invention, the polytetrafluoroethylene powder modified gel coat resin is selected to prepare the high weather-resistant hydrophobic gel coat resin for the antenna housing, the high weather-resistant hydrophobic gel coat resin for the antenna housing is coated on the surface of the antenna housing, the prepared antenna housing composite material sample with the high weather-resistant hydrophobic gel coat resin for the antenna housing has a static contact angle as high as 93.79 degrees and a material dielectric constant as low as 3, the hydrophobic property cannot be reduced after a manual 1000-hour solar radiation test, and the antenna housing composite material has excellent wear resistance and scratch resistance;
2. the m-phenyl neopentyl glycol type gel coat resin is selected as a base material, and the resin has good weather resistance; meanwhile, an ultraviolet absorbent and an anti-mould auxiliary agent are added on the basis of the existing gel coat resin, so that the ultraviolet resistance and anti-mould properties of the gel coat on the surface of the radome are further improved;
3. the radome composite material with the surface being the gel coat coating is prepared by adopting a vacuum-assisted resin transfer molding process, so that the dimensional accuracy of the product is better, and the electrical and structural performances of the radome can be effectively improved.
Drawings
Fig. 1 is a contact angle test chart of a radome composite material sample with a gel coat layer on the surface prepared in the second test.
Detailed Description
The first embodiment is as follows: the embodiment is a preparation method of high weather-resistant hydrophobic gel coat resin for an antenna housing, which is specifically carried out according to the following steps:
firstly, adding 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole into styrene, and performing ultrasonic dispersion to obtain an ultraviolet absorbent dispersion liquid; the mass of the 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is 30 to 35 percent of that of styrene;
secondly, adding dichlorooctyl isothiazolinone into styrene, and mechanically stirring until the dichlorooctyl isothiazolinone is uniformly dispersed to obtain an antifungal assistant dispersion liquid; the mass of the dichloro octyl isothiazolinone is 50 to 55 percent of that of the styrene;
adding polytetrafluoroethylene powder into the m-phenyl neopentyl glycol type gel coat, uniformly dispersing by using a grinder, adding the ultraviolet absorbent dispersion liquid obtained in the step one and the anti-mould aid dispersion liquid obtained in the step two, and mechanically stirring until the ultraviolet absorbent dispersion liquid and the anti-mould aid dispersion liquid are uniformly dispersed to obtain the high weather-resistant hydrophobic gel coat resin for the radome;
the mass of the polytetrafluoroethylene powder is 3-4% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the ultraviolet absorbent dispersion liquid is 0.4-0.5% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the mildew-proof auxiliary agent dispersion liquid is 0.5-0.6% of that of the m-phenyl neopentyl glycol type gel coat.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the mass of 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole described in step one was 30% of the mass of styrene. The rest is the same as the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the mass of the dichlorooctyl isothiazolinone described in the step two is 50% of the mass of the styrene. The others are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: and the mass of the polytetrafluoroethylene powder in the third step is 3% of that of the m-phenyl neopentyl glycol type gel coat. The rest is the same as one of the first to third embodiments.
The fifth concrete implementation mode: the fourth difference between this embodiment and the specific embodiment is that: the mass of the ultraviolet absorbent dispersion liquid in the third step is 0.5 percent of the mass of the m-phenyl neopentyl glycol type gel coat. The rest is the same as the fourth embodiment.
The sixth specific implementation mode: the fifth embodiment is different from the fifth embodiment in that: the mass of the mildew-proof auxiliary agent dispersion liquid in the third step is 0.5 percent of that of the m-phenyl neopentyl glycol type gel coat. The rest is the same as the fifth embodiment.
The invention was verified with the following tests:
test one: the test is a preparation method of the high weather-resistant hydrophobic gel coat resin for the antenna housing, and the preparation method is specifically carried out according to the following steps:
firstly, adding 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole into styrene, and performing ultrasonic dispersion to obtain an ultraviolet absorbent dispersion liquid; the mass of the 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is 30 percent of that of styrene;
secondly, adding dichlorooctyl isothiazolinone into styrene, and mechanically stirring until the dichlorooctyl isothiazolinone is uniformly dispersed to obtain an antifungal assistant dispersion liquid; the mass of the dichloro octyl isothiazolinone is 50 percent of that of the styrene;
adding polytetrafluoroethylene powder into the m-phenyl neopentyl glycol type gel coat, uniformly dispersing by using a grinder, adding the ultraviolet absorbent dispersion liquid obtained in the step one and the anti-mould aid dispersion liquid obtained in the step two, and mechanically stirring until the ultraviolet absorbent dispersion liquid and the anti-mould aid dispersion liquid are uniformly dispersed to obtain the high weather-resistant hydrophobic gel coat resin for the radome;
the m-phenyl neopentyl glycol type gel coat is MAXGUARDTMGN gel coat;
the mass of the polytetrafluoroethylene powder is 3% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the ultraviolet absorbent dispersion liquid is 0.4% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the mildew-proof auxiliary agent dispersion liquid is 0.5% of that of the m-phenyl neopentyl glycol type gel coat.
And (2) test II: the high weather-resistant hydrophobic gel coat resin for the radome prepared in the first test is used for preparing a high weather-resistant hydrophobic coating on the surface of the radome, and the coating is prepared by the following steps:
firstly, repeatedly coating 802 release agent on the surface of a mould for 5 times, mixing the high weather-resistant hydrophobic gel coat resin and methyl ethyl ketone peroxide for the antenna housing prepared by the test, and spraying the mixture on the surface of the mould by using a spray gun, wherein the diameter of the spray nozzle is 1mm, the spraying pressure is 0.34Mpa, the spraying distance is 200mm, the spraying thickness is 600 mu m, and standing and curing are carried out for 1h at normal temperature; the mass of the methyl ethyl ketone peroxide is 2% of that of the high weather-resistant hydrophobic gel coat resin for the antenna housing;
secondly, paving a glass fiber cloth reinforcing material (SW220) in the mold treated in the step one according to the design thickness of the radome wall of 1.5mm, then paving a flow guide net, a flow guide pipe, demolding cloth, an adhesive absorption felt and a vacuum bag film auxiliary material, vacuumizing the mold to be below-0.05 MPa, injecting unsaturated polyester resin (M105) into the mold according to 80% of the mass of the glass fiber cloth reinforcing material for the radome, placing the mold at room temperature, carrying out vacuum pressure maintaining curing for 6h, and opening the mold to obtain a radome composite material sample with the surface being an adhesive coat.
Fig. 1 is a contact angle test chart of a radome composite material sample with a gel coat coating on the surface prepared in the second test, wherein the contact angle is 93.79 degrees, and the radome composite material sample is in a hydrophobic state.
And testing the dielectric constant of the antenna housing composite material sample with the surface of the gel coat coating prepared in the second test to be 3.
Claims (6)
1. A preparation method of high weather-resistant hydrophobic gel coat resin for an antenna housing is characterized by comprising the following steps:
firstly, adding 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole into styrene, and performing ultrasonic dispersion to obtain an ultraviolet absorbent dispersion liquid; the mass of the 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is 30 to 35 percent of that of styrene;
secondly, adding dichlorooctyl isothiazolinone into styrene, and mechanically stirring until the dichlorooctyl isothiazolinone is uniformly dispersed to obtain an antifungal assistant dispersion liquid; the mass of the dichloro octyl isothiazolinone is 50 to 55 percent of that of the styrene;
adding polytetrafluoroethylene powder into the m-phenyl neopentyl glycol type gel coat, uniformly dispersing by using a grinder, adding the ultraviolet absorbent dispersion liquid obtained in the step one and the anti-mould aid dispersion liquid obtained in the step two, and mechanically stirring until the ultraviolet absorbent dispersion liquid and the anti-mould aid dispersion liquid are uniformly dispersed to obtain the high weather-resistant hydrophobic gel coat resin for the radome;
the high weather-resistant hydrophobic gel coat resin for the radome is used as a high weather-resistant hydrophobic coating on the surface of the radome;
the mass of the polytetrafluoroethylene powder is 3-4% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the ultraviolet absorbent dispersion liquid is 0.4-0.5% of that of the m-phenyl neopentyl glycol type gel coat;
the mass of the mildew-proof auxiliary agent dispersion liquid is 0.5-0.6% of that of the m-phenyl neopentyl glycol type gel coat.
2. The method for preparing the highly weather-resistant hydrophobic gel coat resin for radome of claim 1, wherein the mass of the 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole in the first step is 30% of the mass of styrene.
3. The method for preparing the highly weather-resistant hydrophobic gel coat resin for radome of claim 1, wherein the amount of dichlorooctylisothiazolinone in the second step is 50% of the amount of styrene.
4. The method for preparing the highly weather-resistant hydrophobic gel coat resin for the radome of claim 1, wherein the mass of the polytetrafluoroethylene powder in the third step is 3% of that of the m-phenyl neopentyl glycol type gel coat.
5. The method for preparing the highly weather-resistant hydrophobic gel coat resin for the radome of claim 1, wherein the mass of the ultraviolet absorber dispersion liquid in the step three is 0.4% of that of the m-phenyl neopentyl glycol type gel coat.
6. The method for preparing the highly weather-resistant hydrophobic gel coat resin for the radome of claim 1, wherein the mass of the antifungal auxiliary agent dispersion liquid in the third step is 0.5% of that of the m-phenyl neopentyl glycol type gel coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299896.0A CN110003698B (en) | 2019-04-15 | 2019-04-15 | Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299896.0A CN110003698B (en) | 2019-04-15 | 2019-04-15 | Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110003698A CN110003698A (en) | 2019-07-12 |
| CN110003698B true CN110003698B (en) | 2021-06-18 |
Family
ID=67171914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910299896.0A Active CN110003698B (en) | 2019-04-15 | 2019-04-15 | Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110003698B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111073476A (en) * | 2019-12-28 | 2020-04-28 | 深圳磐石基业管理中心(有限合伙) | Wear-resistant gel coat and preparation method and application thereof |
| CN111073516A (en) * | 2019-12-28 | 2020-04-28 | 深圳磐石基业管理中心(有限合伙) | Hydrophobic gel coat and preparation method and application thereof |
| CN113214693B (en) * | 2021-05-24 | 2022-08-26 | 张义和 | Antibacterial, bactericidal, bacteriostatic, odor-controlling and permanent anti-pollution resin gel coat |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536353A (en) * | 1976-07-06 | 1978-01-20 | Nippon Poriesuteru Kk | Plastic molding resin composition |
| CN1464590A (en) * | 2002-06-07 | 2003-12-31 | 上海之合玻璃钢有限公司 | Radar dome unit piece and manufacturing process, connecting method and dividing method thereof |
| CN103772631A (en) * | 2014-01-21 | 2014-05-07 | 常州大学 | Method of modifying surface hydrophobicity of gel coat resin by triblock fluorine-containing copolymer |
| CN105400388A (en) * | 2015-12-18 | 2016-03-16 | 福建梭罗复合材料研究有限公司 | Colorful gel coat and preparation method thereof |
-
2019
- 2019-04-15 CN CN201910299896.0A patent/CN110003698B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536353A (en) * | 1976-07-06 | 1978-01-20 | Nippon Poriesuteru Kk | Plastic molding resin composition |
| CN1464590A (en) * | 2002-06-07 | 2003-12-31 | 上海之合玻璃钢有限公司 | Radar dome unit piece and manufacturing process, connecting method and dividing method thereof |
| CN103772631A (en) * | 2014-01-21 | 2014-05-07 | 常州大学 | Method of modifying surface hydrophobicity of gel coat resin by triblock fluorine-containing copolymer |
| CN105400388A (en) * | 2015-12-18 | 2016-03-16 | 福建梭罗复合材料研究有限公司 | Colorful gel coat and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110003698A (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110003698B (en) | Preparation method of high-weather-resistance hydrophobic gel coat resin for antenna housing | |
| CN107022279B (en) | A kind of preparation method of the wear-resisting super hydrophobic composite coating of high transparency | |
| CA2213168C (en) | Water repellent coating composition, method for preparing the same, and coating films and coated articles using the same | |
| CN102452807B (en) | The preparation method of a kind of silica sand composition and formed body and this formed body | |
| CN105563964B (en) | A kind of airborne radome composite and preparation method thereof | |
| CN108841263B (en) | Preparation method and application of hydrophobic material for antenna housing surface | |
| CN103247851B (en) | Antenna house | |
| CN110982421A (en) | High-temperature-resistant wave-absorbing coating and preparation method thereof | |
| CN106633908A (en) | Novel environment-friendly double component heat insulation silicone rubber and preparation method thereof | |
| CN109401458B (en) | Exterior wall stone-like paint and preparation method thereof | |
| CN103963313B (en) | One has electrostatic-proof function glass fiber reinforced plastics product and preparation method | |
| CN111410931A (en) | Curable silicone sealant and preparation method and application thereof | |
| CN106634549B (en) | A kind of toughening coating and preparation method thereof | |
| CN114853422B (en) | Wave-absorbing foam and preparation method thereof | |
| CN104029459A (en) | Preparation method of ocean-resisting environment and low weight increasing wave absorbing composite material | |
| CN114315245B (en) | Heat-insulating concrete and preparation process thereof | |
| CN110540798B (en) | Spray paint for injection molding and spraying process thereof | |
| CN109825251B (en) | Wave-absorbing powder, wave-absorbing material, and preparation method and application thereof | |
| CN113308173B (en) | Composite super-hydrophobic coating and preparation method and application thereof | |
| CN110144057A (en) | Space polyimide material surface atom oxygen protective coating and preparation method thereof | |
| CN117050563B (en) | Preparation method of super-hydrophobic coating with high wear resistance and water impact resistance | |
| CN115557741B (en) | Preparation method of cement-based wave-absorbing material with adjustable wave-absorbing performance | |
| CN109135439A (en) | Insulating mold coating and its heat insulation structure | |
| CN109181471A (en) | A kind of high-performance reflective insulation High tailored coating | |
| KR101173661B1 (en) | A reinforcing method of concrete structure using complex resin linked to glass powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |