CN105419513B - Surface pore-sealing method for soft polyurethane wave-absorbing material - Google Patents
Surface pore-sealing method for soft polyurethane wave-absorbing material Download PDFInfo
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- CN105419513B CN105419513B CN201510993483.4A CN201510993483A CN105419513B CN 105419513 B CN105419513 B CN 105419513B CN 201510993483 A CN201510993483 A CN 201510993483A CN 105419513 B CN105419513 B CN 105419513B
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- Prior art keywords
- absorbing material
- sealing
- parts
- pore
- soft polyurethane
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Classifications
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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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
-
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of 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; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention relates to a surface pore-sealing method for a soft polyurethane wave-absorbing material. The method includes the following steps: 1) spraying a soft polyurethane pyramidal wave-absorbing material by means of a pore-sealing base film through a pore-sealing emulsion; and 2) when the pore-sealing base film is dried, spraying a waterproofing coating to achieve a waterproofing effect. The pore-sealing emulsion is composed of, by mass, 30-40 parts of a polyvinyl alcohol emulsion, 3-8 parts of hydrophobic nano silicon dioxide, 0.5-1.5 parts of a surfactant, 0.1-0.5 parts of an additive, and 57-60 parts of water. The solid content of the polyvinyl alcohol emulsion is 7-15%. In the method, the surface of the soft polyurethane pyramidal wave-absorbing material is subjected to the pore-sealing treatment and then the waterproofing coating is sprayed onto the surface of the dried sealed pores. Films formed on the tip of the pyramid and in the grooves at the bottom of the pyramid are uniform. The method reduces the use amount of the waterproofing coating, is suitable for an automatic spray-coating process, and can achieve waterproofing treatment automatic production of the soft polyurethane wave-absorbing material.
Description
Technical field
The present invention relates to the microwave dark room method of flexibel polyurethane pyramid absorbing material water repellent treatment, it is mainly used in
Solve foamed plastics porous surface hole-sealing treatment process.
Background technology
Polyurethane pyramid absorbing material is to use the raw materials such as conductive carbon black, fire retardant, is existed by polyurethane foam plastics
Repeatedly extruded in impregnator, control foamed plastics liquid absorption, high temperature drying cuts into the pyramidal microwave in positive four side and inhales ripple material
Material.The porosity characteristic of its absorbing material causes that this kind of material cannot bear to be used under rainwater such as soaks, drenches with rain at the environment.In order to solve
This problem, need to inhale wave angle cone or flexibel polyurethane pyramid absorbing material adsorption waterproof using hard polyurethane foam shaping
Film brushes one layer of waterproof membrane.The deficiency that above-mentioned 2 kinds of processing methods there is also, hard foamed absorbing material cannot solve height and be
The absorbing material production of more than 1000mm, and Filming Technology cannot solve the uniformity of polygonal poppet surface overlay film, and brushing waterproof
Film exist between pyramid and pyramid bore cunette groove brushing it is not in place, the even defect of non-uniform film thickness.Therefore solve above-mentioned actual raw
Product problem, need to solve foamed plastics porous surface hole-sealing treatment process, meet the Production requirement of water proof type absorbing material.
The content of the invention
In order to realize flexibel polyurethane pyramid absorbing material water-proof function, foamed plastics porous surface need to be carried out at sealing of hole
Reason so that after using spraying waterproof coating, pyramid surface forms optimal water-proof surface.Solve manual brushing water-repellent paint thick
Degree causes uneven thickness, cone cunette groove brushing problem not in place.
Method for waterproofing of the present invention is to flexibel polyurethane pyramid absorbing material surface spraying using sealing of hole emulsion
One layer of sealing of hole counterdie, in counterdie surface spraying water-repellent paint after drying, realizes flexibel polyurethane absorbing material surface waterproofing function
Treatment.Its polyvinyl alcohol sealing of hole emulsion presses mass fraction, by 30~40 parts of polyvinyl alcohol emulsions, dewatering nano silica 3~8
Part, 0.5~1.5 part of surfactant, 0.1~0.5 part of auxiliary agent, 57~60 parts of compositions of water.Wherein the solid of polyvinyl alcohol emulsions contains
Amount is between 7%~15% (quality).
The polyvinyl alcohol emulsions are solid content in 7%~15% water-based emulsion.Using water and polyvinyl alcohol section steam
It is prepared by heating.
The surfactant is AEO, APES, stearic acid polyoxyethylene etc.
Plant or various mixtures, such as AEO-14, NPO-10, SEO-10.
The nano silicon is the silica or polydimethylsiloxanes of HMDS surface modification treatment
Alkane carries out one or more mixture such as surface modified silicon dioxide, such as CAB-O-SIL-EH5, AEROSIL-R812.
Described auxiliary agent is aqueous BYK-014 defoamers, and consumption is 0.1~0.5 part.
The present invention uses sealing of hole emulsion to carrying out sealing pores in flexibel polyurethane pyramid material surface, then dry
The surface spraying water-repellent paint of sealing of hole afterwards, cone and cone cunette groove film forming are uniform, and reduce the consumption of water-repellent paint, be adapted to from
Dynamic spraying coating process, realizes flexibel polyurethane absorbing material water-proofing treatment automated production.
Specific embodiment
Embodiment 1
600 parts of water and 15 parts of NPO-10 are weighed by quality in plastic containers, setting speed 500RPM, with F-0.4 at a high speed
Dispersion machine is uniformly dispersed.Then R81280 parts is added while stirring, and adjustment of rotational speed to 2500RPM disperses 20min, forms slurry.
Slurry is poured into three-roll grinder, milling time 30min.300 parts of polyvinyl alcohol emulsions (solid contents are added in grinding disposed slurry
8%), 5 parts of BYK-014 defoamers.
With high-pressure airless spraying gun to flexibel polyurethane absorbing material sealing surface pore, in spraying water-repellent paint after drying,
Obtain the flexibel polyurethane pyramid absorbing material with water-proof surface.
Embodiment 2
585 parts of water and 10 parts of AEO-10 are weighed in plastic containers, setting speed 500RPM uses F-0.4 high speed dispersors
It is uniformly dispersed.Then R81250 parts is added while stirring, and adjustment of rotational speed to 2500RPM disperses 20min, forms slurry.By slurry
Pour into three-roll grinder, milling time 30min.350 parts of polyvinyl alcohol emulsions (solid content 8%) are added in grinding disposed slurry,
5 parts of of BYK-014 defoamers.
With high-pressure airless spraying gun to flexibel polyurethane absorbing material sealing surface pore, in spraying water-repellent paint after drying,
Obtain the flexibel polyurethane pyramid absorbing material with water-proof surface.
Embodiment 3
570 parts of water and 5 parts of SEO-10 are weighed in plastic containers, setting speed 500RPM is divided with F-0.4 high speed dispersors
Dissipate uniform.Then R81230 parts is added while stirring, and adjustment of rotational speed to 2500RPM disperses 20min, forms slurry.Slurry is fallen
In entering three-roll grinder, milling time 30min.400 parts of polyvinyl alcohol emulsions (solid content 8%) are added in grinding disposed slurry,
1 part of of BYK-014 defoamers.
With high-pressure airless spraying gun to flexibel polyurethane absorbing material sealing surface pore, in spraying water-repellent paint after drying,
Obtain the flexibel polyurethane pyramid absorbing material with water-proof surface.
Claims (2)
1. a kind of flexibel polyurethane absorbing material surface-sealing method, it is characterised in that using sealing of hole emulsion to flexibel polyurethane angle
Cone absorbing material one layer of sealing of hole counterdie of surface spraying, water-repellent paint is sprayed after drying on counterdie surface；The sealing of hole emulsion is pressed
Mass fraction, by 30~40 parts of polyvinyl alcohol emulsions, 3~8 parts of dewatering nano silica, 0.5~1.5 part of surfactant,
0.1~0.5 part of auxiliary agent, 57~60 parts of compositions of water.
2. flexibel polyurethane absorbing material surface-sealing method according to claim 1, it is characterised in that the polyethylene
The solid content of alcohol emulsion is between 7%~15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993483.4A CN105419513B (en) | 2015-12-25 | 2015-12-25 | Surface pore-sealing method for soft polyurethane wave-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993483.4A CN105419513B (en) | 2015-12-25 | 2015-12-25 | Surface pore-sealing method for soft polyurethane wave-absorbing material |
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| Publication Number | Publication Date |
|---|---|
| CN105419513A CN105419513A (en) | 2016-03-23 |
| CN105419513B true CN105419513B (en) | 2017-05-24 |
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| CN201510993483.4A Active CN105419513B (en) | 2015-12-25 | 2015-12-25 | Surface pore-sealing method for soft polyurethane wave-absorbing material |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229767A (en) * | 2011-07-01 | 2011-11-02 | 南京南大波平电子信息有限公司 | Self-cleaning microwave absorption paint and uses thereof |
| CN103347379A (en) * | 2013-07-10 | 2013-10-09 | 南京洛普电子工程研究所 | Fire-retardant type wide-frequency-band high-power compound wave-absorbing material and preparing method thereof |
| CN103436220A (en) * | 2013-09-17 | 2013-12-11 | 南京南大波平电子信息有限公司 | Low-frequency stage microwave absorption material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4005415B2 (en) * | 2002-05-23 | 2007-11-07 | 三菱電線工業株式会社 | Radio wave absorber |
-
2015
- 2015-12-25 CN CN201510993483.4A patent/CN105419513B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229767A (en) * | 2011-07-01 | 2011-11-02 | 南京南大波平电子信息有限公司 | Self-cleaning microwave absorption paint and uses thereof |
| CN103347379A (en) * | 2013-07-10 | 2013-10-09 | 南京洛普电子工程研究所 | Fire-retardant type wide-frequency-band high-power compound wave-absorbing material and preparing method thereof |
| CN103436220A (en) * | 2013-09-17 | 2013-12-11 | 南京南大波平电子信息有限公司 | Low-frequency stage microwave absorption material |
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| Publication number | Publication date |
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| CN105419513A (en) | 2016-03-23 |
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Address after: 210031 2 / F, Beidou building, No. 6, Huida Road, Jiangbei new district, Nanjing City, Jiangsu Province Patentee after: Nanjing aerospace Boping Electronic Technology Co., Ltd Address before: 211113 No.19 Lantian Road, Lukou Airport Industrial Park, Jiangning Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING BOPING ELECTRONIC TECHNOLOGY Co.,Ltd. |
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