CN110499060A - A kind of elasticity antistatic polyurethane coating and its application - Google Patents
A kind of elasticity antistatic polyurethane coating and its application Download PDFInfo
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- CN110499060A CN110499060A CN201910813239.3A CN201910813239A CN110499060A CN 110499060 A CN110499060 A CN 110499060A CN 201910813239 A CN201910813239 A CN 201910813239A CN 110499060 A CN110499060 A CN 110499060A
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- 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
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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
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention provides a kind of elastic antistatic polyurethane coating and its applications, belong to floor material technical field.Including first component and second component, the first group is divided into modified MDI polyurethane curing agent；The second component includes polyether polyol resin, polyurethane special active diluent, dispersing agent, levelling agent, defoaming agent, anti-settling agent, water absorbing agent, conductive material, toner and filler.Elasticity antistatic polyurethane coating provided by the invention includes first component and second component, polyether polyol resin used in second component has certain rigidity and preferable flexibility, it is high with the modification MDI polyurethane curing agent cross-linking reaction degree in first component, de- defoaming effect is good, forms film that is fine and close, coupling hardness with softness；With the performances such as adhesive force, resilience, wearability be excellent.
Description
Technical field
The present invention relates to floor material technical field more particularly to a kind of elastic antistatic polyurethane coating and its applications.
Background technique
Domestic resin terrace is largely epoxide terrace, but epoxide terrace is rigidly big, flexibility with respect to polyurethane floor compared with
Difference.Elastic terrace is due to the advantages that antiskid property is good, preventing injury from fall, noise reduction, suitable easypro step sense and by airport building, hospital, school, figure
The occasions such as book shop, Electronics Factory use.The elastic terrace material that the ground of these occasions is generally laid at present is PVC, but PVC floor
In the presence of weld it is seamed, be not easy the disadvantages of overhauling.
Seek that a kind of adhesive force is strong, wearability is good, resilience is good, elastic coating of anti-static effect becomes terrace industry
One big hot spot.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of elastic antistatic polyurethane coating and its applications.The present invention
The elastic antistatic polyurethane coating resilience and wearability of offer are good, and adhesive force is strong, and integrally formed in construction, are not present
Seam, appearance are good.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of elastic antistatic polyurethane coating, including first component and second component, the first component and
The mass ratio of second component is 1:5；
The first group is divided into modified MDI polyurethane curing agent；
The second component includes the following components'mass percentage: polyether polyol resin 30~50%, polyurethane is dedicated
Reactive diluent 2~5%, dispersing agent 0.5~2%, levelling agent 0.5~2%, defoaming agent 0.5~2%, anti-settling agent 0.5~2%,
Water absorbing agent 5~10%, conductive material 2~5%, toner 5~10%, filler 25~30%.
Preferably, the fineness of the second component is 80~100 μm, and viscosity is 3000~4500cps.
Preferably, the polyurethane special active diluent includes anacardol monohydric alcohol.
Preferably, the anti-settling agent includes organobentonite or fumed silica.
Preferably, the water absorbing agent includes molecular sieve.
Preferably, the conductive material includes graphene or single-walled carbon nanotube.
Preferably, the filler is inorganic filler.
Preferably, the partial size of the filler is 400~500 mesh.
Preferably, the second component is prepared by method comprising the following steps:
Polyether polyol resin and polyurethane special active diluent are mixed, the first mixture is obtained；
First mixture is successively mixed with dispersing agent, defoaming agent, anti-settling agent, water absorbing agent and conductive material, is obtained
Second mixture；
Second mixture is successively mixed with toner, filler and levelling agent, the second component is obtained.
The present invention also provides elastic antistatic polyurethane coating the answering in floor field described in above-mentioned technical proposal
With.
The present invention provides a kind of elastic antistatic polyurethane coating, including first component and second component, the first component and
The mass ratio of second component is 1:5；The first group is divided into modified MDI polyurethane curing agent；The second component includes following quality hundred
The component of point ratio: polyether polyol resin 30~50%, polyurethane special active diluent 2~5%, dispersing agent 0.5~2%,
Levelling agent 0.5~2%, defoaming agent 0.5~2%, anti-settling agent 0.5~2%, water absorbing agent 5~10%, conductive material 2~5%, color
Powder 5~10%, filler 25~30%.
Elasticity antistatic polyurethane coating provided by the invention includes first component and second component, and polyethers used in second component is more
First alcohol resin has certain rigidity and preferable flexibility, with the modification MDI polyurethane curing agent cross-linking reaction journey in first component
Degree is high, takes off the film that defoaming effect is good, forms densification, couples hardness with softness, and has excellent adhesive attraction, resilience wear-resisting；Meanwhile this hair
The elastic antistatic polyurethane coating of bright offer can one-pass molding, integral seamless is beautiful；Basal plane can be resisted to crack, resilience
It is good, elongation at break 100%；Antiskid property is good, step sense is comfortable, and leakage electrostatic charge effect is good, and surface (volume) resistance is 1 ×
106~1 × 109Ω.Embodiment statistics indicate that: the wearability of elasticity antistatic polyurethane coating provided by the invention is 0.01
~0.015g, shore hardness 70~75, adhesion strength 3.0MPa, elongation at break are 100~120%, and tensile strength is
6.5MPa。
Specific embodiment
The present invention provides a kind of elastic antistatic polyurethane coating, including first component and second component, the first component and
The mass ratio of second component is 1:5；
The first group is divided into modified MDI polyurethane curing agent；
The second component includes the following components'mass percentage: polyether polyol resin 30~50%, polyurethane is dedicated
Reactive diluent 2~5%, dispersing agent 0.5~2%, levelling agent 0.5~2%, defoaming agent 0.5~2%, anti-settling agent 0.5~2%,
Water absorbing agent 5~10%, conductive material 2~5%, toner 5~10%, filler 25~30%.
Elasticity antistatic polyurethane coating provided by the invention includes first component, and the first group is divided into modified MDI polyurethane
Curing agent.The present invention is not specifically limited the source of the modified MDI polyurethane curing agent, ripe using those skilled in the art
The commercial product known, and specifically, it is preferable to for the modification MDI polyurethane curing agent purchased from Yantai Wanhua.
Elasticity antistatic polyurethane coating provided by the invention includes second component；The fineness of the second component is preferably 80~
100 μm, viscosity is preferably 3000~4500cps.
In the present invention, the mass ratio of the first component and second component is 1:5.
The second component of elasticity antistatic polyurethane coating provided by the invention include mass percent be 30~50% it is poly-
Ethoxylated polyhydric alcohol resin, preferably 35~45%, further preferably 40%.Source of the present invention to the polyether polyol resin
It is not specifically limited, using commercial product well known to those skilled in the art, the specific Bayer as being purchased from Bayer Group
D-1150 polyether polyol resin.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 2~5% polyurethane special active diluent, preferably 3~4%.In the present invention, institute
Stating polyurethane special active diluent is preferably anacardol monohydric alcohol.The present invention carrys out the polyurethane special active diluent
Source is not specifically limited, using commercial product well known to those skilled in the art.In the present invention, the anacardol unitary
Alcohol has very high dilution efficiency and large range of compatibility, shows good substrate and filler wetability.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 0.5~2% dispersing agent, preferably 1.0~1.5%.In the present invention, the dispersing agent
Preferably byk110.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 0.5~2% levelling agent, preferably 1.0~1.5%.In the present invention, the levelling agent
Preferably it is purchased from the byk333 of Bi Ke company.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 0.5~2% defoaming agent, preferably 1.0~1.5%.In the present invention, the defoaming agent
It is preferred that being purchased from the byk-A530 of Bi Ke company.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 0.5~2% anti-settling agent, preferably 1.0~1.5%.In the present invention, the anti-settling agent
Preferably organobentonite or fumed silica；The partial size of the anti-settling agent is preferably 6~8 μm.The present invention is to described anti-settling
The source of agent is not specifically limited, using commercial product well known to those skilled in the art, specifically: organic swelling
Soil is purchased from this SD-1, SD-2, BENTONE38 or BENGEL858 of hamming；The fumed silica is preferably Degussa
A200.In the present invention, the anti-settling agent can prevent the filling settlement in component B from agglomerating.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 5~10% water absorbing agent, preferably 6~9%, further preferably 7~8%.In this hair
In bright, the water absorbing agent is preferably molecular sieve.The present invention is not specifically limited the source of the water absorbing agent, using this field skill
Commercial product known to art personnel.In the present invention, it includes other originals that the water absorbing agent, which can adsorb filler in component B,
The contained moisture of material reduces the bubble that the reaction of the first and second components generates.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 2~5% conductive material, preferably 3~4%.In the present invention, the conductive material is excellent
Choosing includes graphene or single-walled carbon nanotube；The present invention is not specifically limited the source of the conductive material, using this field
Commercial product known to technical staff.In the present invention, electrostatic can be transmitted to ground by the conductive material, be made described
Coating has anti-static electrification.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 5~10% toner, preferably 6~9%, further preferably 7~8%.In the present invention
In, the toner is preferably organic pigment, and the present invention is not specifically limited the color of the toner, those skilled in the art's root
It is configured according to actual needs.The toner of this hair people is free of heavy metal using organic pigment, environmentally protective.
On the basis of the mass percent of polyether polyol resin, elasticity antistatic polyurethane coating provided by the invention
Second component include mass percent be 25~30% filler, preferably 26~29%, further preferably 27~28%.At this
In invention, the filler is preferably inorganic filler；The inorganic filler preferably includes silica, powdered whiting or sulfuric acid
Barium；The partial size of the filler is preferably 400~500 mesh.In the present invention, the filler can adjusting coating rheological property, change
It is apt to anti-settling property, reduces cost.
In the present invention, the second component is preferably prepared by method comprising the following steps:
Polyether polyol resin and polyurethane special active diluent are mixed, the first mixture is obtained；
First mixture is successively mixed with dispersing agent, defoaming agent, anti-settling agent, water absorbing agent and conductive material, is obtained
Second mixture；
Second mixture is successively mixed with toner, filler and levelling agent, the second component is obtained.
The present invention mixes polyether polyol resin and polyurethane special active diluent, obtains the first mixture.
In the present invention, the mixed mode preferably stirs, and the revolving speed of the stirring is preferably 400~600r/
min；Time is preferably 3~5min.
After obtaining the first mixture, the present invention by first mixture successively with dispersing agent, defoaming agent, anti-settling agent, suction
Aqua and conductive material mixing, obtain the second mixture.
In the present invention, the mixed mode preferably stirs, and the revolving speed of the stirring is preferably 1000~1500r/
Min, time are preferably 60~90min.
After obtaining the second mixture, the present invention successively mixes second mixture with toner, filler and levelling agent, obtains
To the second component.
In the present invention, the mixed mode preferably stirs.
In the present invention, when sequentially adding toner and filler in second mixture, the revolving speed of the stirring is preferred
For 400~500r/min；After the toner and filler are added, the revolving speed of the stirring is preferably 1000~1500r/
Min, time are preferably 40~50min.
After obtaining second component, it is also preferable to include filter and package the second component inspection by the present invention.
In the present invention, the first component in the elastic antistatic polyurethane coating and second component when in use, are separately stored up
It deposits；After in use, the first component and second component are mixed, use.
Elasticity antistatic polyurethane coating provided by the invention can one-pass molding, integral seamless is beautiful；Anti- basal plane is opened
It splits, there is excellent resilience and elongation at break；Antiskid property is good, step sense is comfortable；It is good to reveal electrostatic charge effect, surface (volume)
Resistance: 1 × 106~1 × 109Ω。
The present invention also provides elastic antistatic polyurethane coating the answering in floor field described in above-mentioned technical proposal
With.
In the present invention, when the elastic antistatic polyurethane coating is applied to floor field, following step is preferably included
It is rapid:
Concrete surface is polished, is cleaned, repairs seam and hole；Described in being brushed on concrete surface after treatment
Elastic antistatic polyurethane coating.
The present invention is not specifically limited the painting way and thickness of the elastic antistatic polyurethane coating, according to reality
It is selected.
It in the present invention, according to actual needs can also be in the concrete surface and institute when being applied to floor field
It states design between elastic antistatic polyurethane coating layer and brushes other coatings.
Elastic antistatic polyurethane coating provided by the invention and its application are carried out specifically below with reference to embodiment
It is bright, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
A kind of elasticity antistatic polyurethane coating, including first component and second component, the quality of the first component and second component
Than for 1:5；The first group is divided into the modification MDI polyurethane curing agent purchased from Yantai Wanhua；
The second component includes the following components'mass percentage:
Polyether polyol resin 50%, polyurethane special active diluent anacardol monohydric alcohol 5%, dispersing agent
Byk1100.5%, levelling agent byk3330.5%, defoaming agent byk-A5300.5%, this SD-10.5% of anti-settling agent hamming inhale
Aqua molecular sieve 5%, conductive material graphene 3%, toner 5%, filler-silicon dioxide 30%；
The second component is prepared by method comprising the following steps:
In clean a mixing bowl, polyether polyol resin, polyurethane special active diluent are sequentially added, opens stirring
Device, revolving speed are adjusted to 600r/min, disperse 5min；Dispersing agent, defoaming agent, anti-settling agent, water absorbing agent and conductive material are sequentially added, is turned
Speed is adjusted to 1500r/min, disperses 90min；It finally turns speed and sequentially adds toner, filler and levelling agent to 500r/min, add
It is 1500r/min that revolving speed is adjusted after entering, and disperses 45min, and inspection filters and packages, and the fineness of the second component is 80 μm, glues
Degree is 3800cps.
Embodiment 2
A kind of elasticity antistatic polyurethane coating, including first component and second component, the quality of the first component and second component
Than for 1:5；The first group is divided into the modification MDI polyurethane curing agent purchased from Yantai Wanhua；
The second component includes the following components'mass percentage:
Polyether polyol resin 45%, polyurethane special active diluent anacardol monohydric alcohol 5%, dispersing agent
Byk1100.5%, levelling agent byk3330.5%, defoaming agent byk-A5301.0%, this SD-11.0% of anti-settling agent hamming inhale
Aqua molecular sieve 8%, conductive material graphene 4%, toner 5%, filler-silicon dioxide 30%；The fineness of the second component is 80
μm, viscosity 4300cps；
The preparation method of the second component is same as Example 1.
Embodiment 3
A kind of elasticity antistatic polyurethane coating, including first component and second component, the quality of the first component and second component
Than for 1:5；The first group is divided into the modification MDI polyurethane curing agent purchased from Yantai Wanhua；
The second component includes the following components'mass percentage:
Polyether polyol resin 44.5%, polyurethane special active diluent anacardol monohydric alcohol 5%, dispersing agent
Byk1101.0%, levelling agent byk3330.5%, defoaming agent byk-A5301.0%, this SD-11.0% of anti-settling agent hamming inhale
Aqua molecular sieve 8%, conductive material graphene 5%, toner 7%, filler-silicon dioxide 27%；The fineness of the second component is 80
μm, viscosity 3300cps；
The preparation method of the second component is same as Example 1.
The performance test results of elastic antistatic polyurethane coating obtained by Examples 1 to 3 are as shown in table 1.
The performance test results of elastic antistatic polyurethane coating obtained by 1 Examples 1 to 3 of table
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Surface drying time (h) | ≤6 | ≤6 | ≤6 |
| Do solid work the time (h) | ≤24 | ≤24 | ≤24 |
| Wearability g (750g/500r) | 0.015 | 0.015 | 0.01 |
| Shore A hardness | 75 | 70 | 70 |
| Adhesion strength (MPa) | 3.0 | 3.0 | 3.0 |
| Elongation at break | 100% | 120% | 120% |
| Tensile strength (MPa) | 6.5 | 6.5 | 6.5 |
| Sheet resistance (Ω) | 1×108~1 × 109 | 1×107~1 × 108 | 1×106~1 × 107 |
| Volume resistance (Ω) | 1×108~1 × 109 | 1×107~1 × 108 | 1×106~1 × 107 |
As can be seen from Table 1: elastic antistatic polyurethane coating of the invention passes through defoaming agent, molecular sieve and polyalcohol tree
The collective effect of the raw materials such as rouge and curing agent makes elastic antistatic polyurethane coating that there is excellent wearability, hardness, fracture to stretch
Long rate and conductive effect
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of elasticity antistatic polyurethane coating, which is characterized in that including first component and second component, the first component and second group
The mass ratio divided is 1:5；
The first group is divided into modified MDI polyurethane curing agent；
The second component includes the following components'mass percentage: polyether polyol resin 30~50%, polyurethane special active
Diluent 2~5%, dispersing agent 0.5~2%, levelling agent 0.5~2%, defoaming agent 0.5~2%, anti-settling agent 0.5~2%, water suction
Agent 5~10%, conductive material 2~5%, toner 5~10%, filler 25~30%.
2. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the fineness of the second component is 80
~100 μm, viscosity is 3000~4500cps.
3. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the polyurethane special active is dilute
Releasing agent includes anacardol monohydric alcohol.
4. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the anti-settling agent includes organic bentonite
Profit soil or fumed silica.
5. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the water absorbing agent includes molecule
Sieve.
6. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the conductive material includes graphite
Alkene or single-walled carbon nanotube.
7. elasticity antistatic polyurethane coating according to claim 1, which is characterized in that the filler is inorganic filler.
8. elasticity antistatic polyurethane coating according to claim 1 or claim 7, which is characterized in that the partial size of the filler is
400~500 mesh.
9. the described in any item elastic antistatic polyurethane coatings of claim 1~7, which is characterized in that the second component is by wrapping
The method for including following steps is prepared:
Polyether polyol resin and polyurethane special active diluent are mixed, the first mixture is obtained；
First mixture is successively mixed with dispersing agent, defoaming agent, anti-settling agent, water absorbing agent and conductive material, obtains second
Mixture；
Second mixture is successively mixed with toner, filler and levelling agent, the second component is obtained.
10. application of the elasticity antistatic polyurethane coating according to any one of claims 1 to 9 in floor field.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393597A (en) * | 2020-05-29 | 2020-07-10 | 广州五行材料科技有限公司 | Siloxane modified cardanol derivative prepolymer and preparation method and application thereof |
| CN111647322A (en) * | 2020-06-27 | 2020-09-11 | 德阳聪源光电科技股份有限公司 | Conductive ink composition for preparing flexible heating film |
| CN111662633A (en) * | 2020-06-24 | 2020-09-15 | 广东达尔新型材料有限公司 | Anti-static wear-resistant polyurethane floor coating and preparation method thereof |
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| CN111662633B (en) * | 2020-06-24 | 2021-11-30 | 广东达尔新型材料有限公司 | Anti-static wear-resistant polyurethane floor coating and preparation method thereof |
| CN111647322A (en) * | 2020-06-27 | 2020-09-11 | 德阳聪源光电科技股份有限公司 | Conductive ink composition for preparing flexible heating film |
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