CN105419616A - Special waterproof coating for mobile phone and preparation process thereof - Google Patents
Special waterproof coating for mobile phone and preparation process thereof Download PDFInfo
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- CN105419616A CN105419616A CN201510959503.6A CN201510959503A CN105419616A CN 105419616 A CN105419616 A CN 105419616A CN 201510959503 A CN201510959503 A CN 201510959503A CN 105419616 A CN105419616 A CN 105419616A
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5003—Polyethers having heteroatoms other than oxygen having halogens
- C08G18/5015—Polyethers having heteroatoms other than oxygen having halogens having fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/61—Polysiloxanes
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides special waterproof coating for mobile phones. The waterproof coating comprises a component A and a component B. The component A comprises the following raw material components: hydroxyl-terminated polysiloxane, fluorine-containing polyether polyol, HMDI, DBTL and solvent. The component B comprises the following raw material components: silane coupling agent, nano-silicon dioxide, solvent and curing agent. The special waterproof coating for mobile phones provided by the invention has the advantages that the waterproof performance is good; the mobile phones treated by using the waterproof coating provided by the invention can still work normally after being immersed in water for 5 hours; the mobile phones treated by using the waterproof coating provided by the invention can still work normally after being repetitively immersed in water for 5min and then dried for continuous five times.
Description
Technical field
The present invention relates to a kind of waterproof paint, particularly relate to a kind of mobile phone waterproof paint specially and preparation technology thereof, belong to waterproof paint field.
Background technology
Mobile phone is a kind of product of now science and technology, its rapidly tempo become instrument indispensable in people's life.Mobile phone not only plays the effect of Conventional communication, and modern smart mobile phone, can take pictures, navigate, be tourism, trip must be with instrument; Can play games, chat, be the indispensable instrument of amusement and recreation; Can search for knowledge, be the indispensable instrument of study.
In a word, people be unable to do without mobile phone, so when mobile phone cannot work because of a variety of causes, will be unusual pain in the neck for the user.And in the report of survey made according to external research firm, because water inlet causes mobile phone to damage the second coming the mobile phone source of damage.
As everyone knows, most of mobile phone does not have resistivity completely to water, namely non-watertight.Water is very easy to enter from the position such as gap, USB port, earpiece holes, receiver, loud speaker of button, center and front and back panel.Along with the lifting of technique and material, producer have also been made a lot of improvement to mobile phone waterproof, handset can reduce button as far as possible, and the gap of center and front and back panel is also more and more less, the processing mode of receiver and loud speaker is then add one deck waterproof ventilated membrane, but still well cannot solve the non-watertight problem of mobile phone.
Prior art has following defect: (1) mobile phone is non-watertight, after immersion, cannot normally use; (2) existing mobile phone plated film waterproof effect is bad; (3) existing mobile phone plated film not stain resistant, easily pollutes; (3) existing mobile phone plated film is easily aging, loses efficacy.
Summary of the invention
For above technical problem, the invention provides a kind of mobile phone waterproof paint specially and preparation technology thereof, to realize following goal of the invention:
(1) solve the non-watertight problem of mobile phone, make mobile phone realize immersion and still can normally work for 5 hours;
(2) make mobile phone realize immersion repeatedly still can normally work for 5 times;
(3) stain resistant, the ageing-resistant performance of mobile phone waterproof paint simultaneously, is improved.
For achieving the above object, the invention provides following technical scheme:
A kind of mobile phone waterproof paint specially, described waterproof paint comprises component A and B component.
Below the further improvement to technique scheme:
Described component A comprises following feed composition: hydroxy-terminated polysiloxane, fluorine-containing polyether glycol, HMDI, DBTL, solvent.
Described B component comprises following feed composition: silane coupling agent, nano silicon 20 ~ 40, solvent, solidifying agent.
Described component A, with parts by weight, comprises following feed composition:
Hydroxy-terminated polysiloxane 10 ~ 25 parts, fluorine-containing polyether glycol 30 ~ 55 parts, HMDI8 ~ 20 part, DBTL0.1 ~ 0.2 part, solvent 20 ~ 35 parts;
Described B component, with parts by weight, comprises following feed composition: silane coupling agent 5 ~ 20 parts, nano silicon 20 ~ 40 parts, solvent 25 ~ 50 parts, 15 ~ 35 parts, solidifying agent.
Described component A, with parts by weight, comprises following feed composition:
Hydroxy-terminated polysiloxane 14 parts, fluorine-containing polyether glycol 45 parts, HMDI11 part, DBTL0.1 part, solvent 25 parts;
Described B component, with parts by weight, comprises following feed composition:
Silane coupling agent 11 parts, nano silicon 20 parts, solvent 34 parts, 25 parts, solidifying agent.
Described component A and B component, in use, weight proportion is component A: B component=2.5:1 ~ 3.0:1.
Described solidifying agent is aliphatic amide modified firming agent, and total amine value is 420 ~ 480mgKOH/g, and viscosity is 300 ~ 500mpa.s at 25 DEG C;
Described solvent is isoparaffin solvent oil, and density is 0.756g/cm
3(15 DEG C), aromaticity content is≤10ppm.
A preparation technology for mobile phone waterproof paint specially, is characterized in that: comprise the preparation technology of component A and the preparation technology of B component.
The preparation technology of described component A:
Hydroxy-terminated polysiloxane and fluorine-containing polyether glycol, 115 ± 5 DEG C, under-0.08 ~-0.09MPa condition, vacuum hydro-extraction 1.5h; Cool to 55 ~ 60 DEG C; Pass into nitrogen, add HMDI, with rotating speed 75 ~ 80r/min, stir 10min;
Add DBTL, be warming up to 85 ~ 90 DEG C, reaction 2.5h; After being cooled to 55 ~ 60 DEG C, add solvent;
Close nitrogen, vacuum defoamation 15min, vacuum pressure is-0.05 ~-0.06MPa; Obtained component A.
The preparation technology of described B component:
By solvent dispersion; Add silane coupling agent, dispersion 15min, rotating speed is 400r/min;
Add solidifying agent again, dispersion 10min, rotating speed is 400r/min;
Open high speed shear, rotating speed is 1200r/min;
Add nano silicon, dispersion 1h, control rotating speed is 1200r/min;
Then vacuum defoamation 5min, vacuum pressure is-0.05 ~-0.06MPa; Obtained B component.
Compared with prior art, the present invention has following beneficial effect:
1, the water resistance of mobile phone waterproof paint specially of the present invention is good; Through the mobile phone of waterproof paint process of the present invention, soak after 5 hours, still can normally work; Through the mobile phone of waterproof paint process of the present invention, immersion 5min, after oven dry, then soaks, after continuous 5 times, still can normally work;
2, the contaminated resistance of mobile phone waterproof paint specially of the present invention is good;
3, the resistance to UV of mobile phone waterproof paint specially of the present invention and aging resistance good.
Embodiment
Embodiment 1 one kinds of mobile phone waterproof paint speciallies
Described waterproof paint, comprises component A and B component;
Described component A, with parts by weight, comprises following raw material:
Hydroxy-terminated polysiloxane 14 parts, fluorine-containing polyether glycol 45 parts, HMDI11 part, DBTL0.1 part, solvent 25 parts.
Described B component, with parts by weight, comprises following raw material:
Silane coupling agent 11 parts, nano silicon 20 parts, solvent 34 parts, 25 parts, solidifying agent.
During use, the quality proportioning of component A and B component is component A: B component=2.5:1.
Described hydroxy-terminated polysiloxane is the fluorine-containing polyester polysiloxane of terminal hydroxy group;
Described fluorine-containing polyether glycol, hydroxyl value is 36 ~ 40mgKOH/g;
Described HMDI is through hydrotreated diphenylmethanediisocyanate;
Described DBTL is dibutyl tin laurate;
The model of described silane coupling agent is kh550, and main component is 3-aminopropyl triethoxysilane, flash-point 104 DEG C, content >=97%;
Described solidifying agent is aliphatic amide modified firming agent, and total amine value is 420 ~ 480mgKOH/g, and viscosity is 300 ~ 500mpa.s at 25 DEG C;
Described solvent is isoparaffin solvent oil, and density is 0.756g/cm
3(15 DEG C), aromaticity content is≤10ppm;
Described nano silicon, particle diameter is about 5nm.
Embodiment 2 one kinds of mobile phone waterproof paint speciallies
Described waterproof paint, comprises component A and B component;
Described component A, with parts by weight, comprises following raw material:
Hydroxy-terminated polysiloxane 10 parts, fluorine-containing polyether glycol 30 parts, HMDI8 part, DBTL0.1 part, solvent 20 parts.
Described B component, with parts by weight, comprises following raw material:
Silane coupling agent 5 parts, nano silicon 29 parts, solvent 25 parts, 15 parts, solidifying agent.
During use, the quality proportioning of component A and B component is component A: B component=2.7:1.
Described hydroxy-terminated polysiloxane is the fluorine-containing polyester polysiloxane of terminal hydroxy group;
Described fluorine-containing polyether glycol, hydroxyl value is 36 ~ 40mgKOH/g;
Described HMDI is through hydrotreated diphenylmethanediisocyanate;
Described DBTL is dibutyl tin laurate;
The model of described silane coupling agent is kh550, and main component is 3-aminopropyl triethoxysilane, flash-point 104 DEG C, content >=97%;
Described solidifying agent is aliphatic amide modified firming agent, and total amine value is 420 ~ 480mgKOH/g, and viscosity is 300 ~ 500mpa.s at 25 DEG C;
Described solvent is isoparaffin solvent oil, and density is 0.756g/cm
3(15 DEG C), aromaticity content is≤10ppm;
Described nano silicon, particle diameter is about 5nm.
Embodiment 3 one kinds of mobile phone waterproof paint speciallies
Described waterproof paint, comprises component A and B component;
Described component A, with parts by weight, comprises following raw material:
Hydroxy-terminated polysiloxane 25 parts, fluorine-containing polyether glycol 55 parts, HMDI20 part, DBTL0.2 part, solvent 35 parts.
Described B component, with parts by weight, comprises following raw material:
Silane coupling agent 20 parts, nano silicon 40 parts, solvent 50 parts, 35 parts, solidifying agent.
During use, the quality proportioning of component A and B component is component A: B component=3.0:1.
Described hydroxy-terminated polysiloxane is the fluorine-containing polyester polysiloxane of terminal hydroxy group;
Described fluorine-containing polyether glycol, hydroxyl value is 36 ~ 40mgKOH/g;
Described HMDI is through hydrotreated diphenylmethanediisocyanate;
Described DBTL is dibutyl tin laurate;
The model of described silane coupling agent is kh550, and main component is 3-aminopropyl triethoxysilane, flash-point 104 DEG C, content >=97%;
Described solidifying agent is aliphatic amide modified firming agent, and total amine value is 420 ~ 480mgKOH/g, and viscosity is 300 ~ 500mpa.s at 25 DEG C;
Described solvent is isoparaffin solvent oil, and density is 0.756g/cm
3(15 DEG C), aromaticity content is≤10ppm;
Described nano silicon, particle diameter is about 5nm.
The preparation technology of embodiment 4 one kinds of mobile phone waterproof paint speciallies
The preparation technology of described waterproof paint is as follows:
The preparation technology of component A:
Each raw material is taken by the composition of raw materials of component A;
In four-hole boiling flask, add hydroxy-terminated polysiloxane, fluorine-containing polyether glycol, 115 ± 5 DEG C, under-0.08 ~-0.09MPa condition, vacuum hydro-extraction 1.5h;
Four-hole boiling flask is cooled to 55 ~ 60 DEG C; After passing into nitrogen, add HMDI, open electric mixer and stir, rotating speed 75 ~ 80r/min, after stirring 10min;
Add DBTL to four-hole boiling flask, adopt the heating of thermostatical oil bath, be warming up to 85 ~ 90 DEG C, reaction 2.5h;
Naturally cooling adds solvent after being cooled to 55 ~ 60 DEG C;
Close nitrogen, vacuum defoamation 15min, vacuum pressure is-0.05 ~-0.06MPa;
Discharging.
The preparation technology of B component:
Each raw material is taken by the composition of raw materials of B component;
In dispersion cup, add solvent, open high speed dispersor, mixing speed is 400r/min;
Add silane coupling agent, dispersion 15min, rotating speed is 400r/min;
Add solidifying agent again, dispersion 10min, rotating speed is 400r/min;
Open high speed shear, rotating speed is 1200r/min;
Slowly add nano silicon, dispersion 1h, control rotating speed is 1200r/min;
Then dispersion cup is put into deaeration container, while stirring vacuum defoamation 5min, vacuum pressure is-0.05 ~-0.06MPa;
Discharging.
Result detects:
(1) the mobile phone waterproof paint specially prepared according to embodiment 1-3 is carried out WATER REPELLENT to mobile phone, carry out robust water immersion performance detection, by judging water resistance by checking whether can normally work after mobile phone immersion process, detected result is as shown in table 1;
Table 1
Known by table 1, the water resistance of mobile phone waterproof paint specially of the present invention is good; Through the mobile phone of waterproof paint process of the present invention, soak after 5 hours, still can normally work; Through the mobile phone of waterproof paint process of the present invention, immersion 5min, after oven dry, then soaks, after continuous 5 times, still can normally work.
(2) waterproof paint of embodiment 1-3 is carried out to the detection of anti-pollution characteristic and ageing-resistant performance, respectively the mobile phone of waterproof paint process is carried out resistant experiment and ageing-resistant experiment, carry out anti-pollution characteristic experiment with reference to GB/T9780-2013 Test method for dirt resistance of film of architectural coatings and paint; Method 1(artificial weathering in exposing to the open air with reference to GB/T1865-2009 paint and varnish artificial weathering and man-made radiation) carry out artificial ageing resistance performance test;
Experimental result is in table 2;
Table 2
From table 2, use the mobile phone after process of the present invention to have obvious anti-pollution characteristic, and water-proof coating ageing-resistant performance is good.
It should be noted that, patent of the present invention is apart from outside Special Statement, and the proportioning raw materials of described waterproof paint all calculates according to weight part.
In the above-described embodiments, preferred forms of the present invention is described, obviously, under inventive concept of the present invention, still can make a lot of change.At this, should illustrate, any change made under inventive concept of the present invention all will fall within the scope of protection of the present invention.
Claims (10)
1. a mobile phone waterproof paint specially, is characterized in that: described waterproof paint comprises component A and B component.
2. a kind of mobile phone waterproof paint specially according to claim 1, is characterized in that:
Described component A comprises following feed composition: hydroxy-terminated polysiloxane, fluorine-containing polyether glycol, HMDI, DBTL, solvent.
3. a kind of mobile phone waterproof paint specially according to claim 1, is characterized in that:
Described B component comprises following feed composition: silane coupling agent, nano silicon, solvent, solidifying agent.
4. a kind of mobile phone waterproof paint specially according to claim 1, is characterized in that:
Described component A, with parts by weight, comprises following feed composition:
Hydroxy-terminated polysiloxane 10 ~ 25 parts, fluorine-containing polyether glycol 30 ~ 55 parts, HMDI8 ~ 20 part, DBTL0.1 ~ 0.2 part, solvent 20 ~ 35 parts;
Described B component, with parts by weight, comprises following feed composition: silane coupling agent 5 ~ 20 parts, nano silicon 20 ~ 40 parts, solvent 25 ~ 50 parts, 15 ~ 35 parts, solidifying agent.
5. a kind of mobile phone waterproof paint specially according to claim 1, is characterized in that:
Described component A, with parts by weight, comprises following feed composition:
Hydroxy-terminated polysiloxane 14 parts, fluorine-containing polyether glycol 45 parts, HMDI11 part, DBTL0.1 part, solvent 25 parts;
Described B component, with parts by weight, comprises following feed composition:
Silane coupling agent 11 parts, nano silicon 20 parts, solvent 34 parts, 25 parts, solidifying agent.
6. a kind of mobile phone waterproof paint specially according to claim 1, is characterized in that:
Described component A and B component, in use, weight proportion is component A: B component=2.5:1 ~ 3.0:1.
7. a kind of mobile phone waterproof paint specially according to claim 4, is characterized in that:
Described solidifying agent is aliphatic amide modified firming agent, and total amine value is 420 ~ 480mgKOH/g, and viscosity is 300 ~ 500mpa.s at 25 DEG C;
Described solvent is isoparaffin solvent oil, and density is 0.756g/cm
3, aromaticity content is≤10ppm.
8. a preparation technology for mobile phone waterproof paint specially, is characterized in that: comprise the preparation technology of component A and the preparation technology of B component.
9. the preparation technology of a kind of mobile phone waterproof paint specially according to claim 8, is characterized in that: the preparation technology of described component A:
Hydroxy-terminated polysiloxane and fluorine-containing polyether glycol, 115 ± 5 DEG C, under-0.08 ~-0.09MPa condition, vacuum hydro-extraction 1.5 ± 0.5h; Cool to 55 ~ 60 DEG C; Pass into nitrogen, add HMDI, with rotating speed 75 ~ 80r/min, stir 10 ± 1min;
Add DBTL, be warming up to 85 ~ 90 DEG C, reaction 2.5 ± 0.5h; After being cooled to 55 ~ 60 DEG C, add solvent;
Close nitrogen, vacuum defoamation 15 ± 1min, vacuum pressure is-0.05 ~-0.06MPa; Obtained component A.
10. the preparation technology of a kind of mobile phone waterproof paint specially according to claim 8, is characterized in that: the preparation technology of described B component:
By solvent dispersion; Add silane coupling agent, dispersion 15 ± 5min, rotating speed is 400 ± 50r/min;
Add solidifying agent again, dispersion 10 ± 1min, rotating speed is 400 ± 50r/min;
Open high speed shear, rotating speed is 1200 ± 50r/min;
Add nano silicon, dispersion 60 ± 5min, control rotating speed is 1200 ± 50r/min;
Then vacuum defoamation 5 ± 1min, vacuum pressure is-0.05 ~-0.06MPa; Obtained B component.
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| CN201510959503.6A CN105419616B (en) | 2015-12-21 | 2015-12-21 | A kind of mobile phone waterproof paint specially and its preparation technology |
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| CN201510959503.6A CN105419616B (en) | 2015-12-21 | 2015-12-21 | A kind of mobile phone waterproof paint specially and its preparation technology |
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| CN106221562A (en) * | 2016-08-23 | 2016-12-14 | 云台科技（深圳）有限公司 | A kind of use for electronic products nano water-proof liquid and waterproof method thereof |
| CN108727960A (en) * | 2018-06-13 | 2018-11-02 | 合肥仁德电子科技有限公司 | A kind of water-repellent paint and preparation method thereof for phone housing |
| CN111804170A (en) * | 2020-07-17 | 2020-10-23 | 巩莉 | Preparation process of waterproof coating |
| CN112159199A (en) * | 2019-07-02 | 2021-01-01 | 广州科德科技有限公司 | Hexagonal matrix self-repairing permeable crystallization multifunctional waterproof agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106221562A (en) * | 2016-08-23 | 2016-12-14 | 云台科技（深圳）有限公司 | A kind of use for electronic products nano water-proof liquid and waterproof method thereof |
| CN108727960A (en) * | 2018-06-13 | 2018-11-02 | 合肥仁德电子科技有限公司 | A kind of water-repellent paint and preparation method thereof for phone housing |
| CN112159199A (en) * | 2019-07-02 | 2021-01-01 | 广州科德科技有限公司 | Hexagonal matrix self-repairing permeable crystallization multifunctional waterproof agent and preparation method thereof |
| CN111804170A (en) * | 2020-07-17 | 2020-10-23 | 巩莉 | Preparation process of waterproof coating |
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| Publication number | Publication date |
|---|---|
| CN105419616B (en) | 2018-04-03 |
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Denomination of invention: A special waterproof coating for mobile phone and its preparation process Effective date of registration: 20220329 Granted publication date: 20180403 Pledgee: Zhejiang Commercial Bank Co.,Ltd. Weifang branch Pledgor: HONGYUAN WATERPROOF TECHNOLOGY GROUP Co.,Ltd. Registration number: Y2022980003440 |
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