CN105368129A - High-abrasion-resistance waterborne UV (ultraviolet)-curable carpentry coating and preparation method - Google Patents
High-abrasion-resistance waterborne UV (ultraviolet)-curable carpentry coating and preparation method Download PDFInfo
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- CN105368129A CN105368129A CN201510967495.XA CN201510967495A CN105368129A CN 105368129 A CN105368129 A CN 105368129A CN 201510967495 A CN201510967495 A CN 201510967495A CN 105368129 A CN105368129 A CN 105368129A
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Abstract
The invention discloses a high-abrasion-resistance waterborne UV (ultraviolet)-curable carpentry coating and a preparation method. The coating comprises waterborne UV-curable paint, a modifier CNC (cellulose nanocrystal) suspension and a modifier silane coupling agent. The preparation method comprises steps as follows: 1) the waterborne UV-curable paint, the CNC suspension liquid and the silane coupling agent are added to a reaction kettle in proportion; 2) the waterborne UV-curable paint is mixed with the modifiers; 3) modified paint is deposited on a base material through pressure ejection; 4) the base material is arranged in a blast drier for drying so as to remove redundant moisture in the paint; 5) the treated base material is placed in a UV curing machine for radiation curing. The coating has the advantages as follows: the abrasion resistance of the waterborne UV-curable carpentry coating modified by CNCs in cooperation with the silane coupling agent is obviously improved, meanwhile, the impact resistance, the hardness, the adhesion and the like of the coating are also improved, and the glossiness tends to be matte and adjustable; the cost is low, the process is controllable, the applicability is good, and daily usage requirements of the waterborne UV-curable paint can be met.
Description
Technical field
That the present invention relates to is the water-borne UV-curing woodenware coating of a kind of high abrasion and preparation method, belongs to technical field of environmental protection paint.
Background technology
Coating material solidified aqueous UV curing coating, UV cured powder paint and the solvent-borne type UV of being divided into is coating material solidified for UV-light (UV).For traditional UV coating, aqueous UV curing coating can tend to zero volatile organic compounds (VOC), nonflammable, the little and safety of environmental pollution; Curing speed is fast, have save the energy, cured product performance good, be suitable for the advantages such as high-speed automated production.UV is coating material solidified to be formed primarily of light trigger, reactive oligomers and reactive thinner, UV curing reaction belongs to energy initiated polymerization, in the presence of photoinitiators, film forming matter is through free radical reaction cross-linkable solidifying in a few second, and solidification is not by oxygen quenching in air.The reactive thinner that traditional solvent-borne UV is coating material solidified used is mostly acrylic acid or the like functional monomer, and after solidification, volumetric shrinkage is comparatively large, affect coating adhesion, and reactive thinner has certain volatility, has certain harm to human body.Aqueous UV curing coating owing to not containing diluent monomer, but is thinner with water, and can solve toxicity and the pungency of volatile constituent, be a developing direction of coating.But compared with coating material solidified with traditional UV, current domestic aqueous UV curing coating synthetic emulsion is that raw material makes mainly with tolylene diisocyanate, and double bond content and relative molecular mass are too low, and mechanical property is poor.Along with the requirement of market to water-borne coatings over-all properties improves constantly, the over-all propertieies such as its wear resistance, anti-impact force, sticking power, hardness need to improve further, extremely urgent to the modification of waterborne UV coating thus.
Cellulose nanocrystal body (Cellulosenanocrystals, CNC) be a kind of natural nano-material that there is premium properties, be expected to be applied to multiple fields, it is cellulosic minimal physical structural unit, be about 200nm, diameter is about 10nm, and the difference with its concentration presents transparent, muddy, gel and crystalline solid state.CNC is a kind of stiff molecule, the significant intensity of material, rigidity and tensile strength can be given, inherent reductibility glucose end group can optionally for building novel nanocomposite materials, the surface primary OH be positioned on C6 position can be used for the hydrophobic or hydrophilic radical of some properties of grafting, rod-like nano-crystalline cellulose has almost perfect crystalline texture, makes it have great length-to-diameter ratio, lower percolation ratio and specific surface area and higher modulus.There has been both at home and abroad and much utilize this degradable of CNC, renewable, low cost, low density and the natural high molecular substance with excellent mechanical performance and thermostability successfully carry out modification case to material.Silane coupling agent is the silicoorganic compound of a class in the molecule simultaneously containing two kinds of different chemical character groups, and its classical product can represent with general formula YSiX3.In formula, Y is non-hydrolytic group, comprises alkenyl (being mainly vinyl), and end is with the alkyl of Cl, NH2, SH, epoxy, N3, functional group such as (methyl) acryloxy, isocyanate group etc., i.e. carbon functional group; X is hydrolysable group, comprises Cl, OMe, OEt, OC2H4OCH3
,oSiMe3, and OAc etc.Due to this special construction, have in the molecule thereof simultaneously can and inanimate matter material (as glass, silica sand, metal etc.) chemically combined reactive group and with organic material (synthetic resins etc.) chemically combined reactive group, may be used for surface treatment.
Summary of the invention
That the present invention proposes is the water-borne UV-curing woodenware coating of a kind of high abrasion and preparation method, its object is to overcome the deficiency that existing water-borne UV-curing coating mechanical property exists, have high abrasion hardness, strong adhesion simultaneously, excellent shock resistance, glossiness is adjustable.
Technical solution of the present invention: the water-borne UV-curing woodenware coating of a kind of high abrasion, it is characterized in that being made up of aqueous UV curing coating, properties-correcting agent nano-cellulose and CNC suspension, properties-correcting agent silane coupling agent, wherein CNC suspension: aqueous UV curing coating=(1.38-10.20): 100; CNC suspension: properties-correcting agent silane coupling agent=(1.38-10.20): (0-5).
The preparation method of the water-borne UV-curing woodenware coating of high abrasion, comprises the steps:
1) aqueous UV curing coating is added in proportion in a kettle., CNC suspension and silane coupling agent;
2) aqueous UV curing coating and properties-correcting agent blended, the room temperature ultrasonic vibration time is lh.
3) by pressure injection, reference standard 98PSI, Japan, be deposited on modified paint on base material;
4) base material is placed in blast drier drying and removes coating excessive moisture;
5) base material after step 4) process is put in UV curing carries out radiation curing.
Advantage of the present invention:
The wear resistance of working in coordination with silane coupler modified water-borne UV-curing woodenware coating through CNC is obviously promoted, and simultaneously the shock resistance, hardness, sticking power etc. of coating also improve, and glossiness tends to sub-light and adjustable.The present invention is with low cost, process control, suitability are good and can meet the daily user demand to aqueous UV curing coating.
Embodiment
The water-borne UV-curing woodenware coating of a kind of high abrasion, its structure is to be made up of aqueous UV curing coating, properties-correcting agent nano-cellulose and CNC suspension, properties-correcting agent silane coupling agent, wherein CNC suspension: aqueous UV curing coating=(1.38-10.20): 100; CNC suspension: properties-correcting agent silane coupling agent=(1.38-10.20): (0-5).
Described aqueous UV curing coating component is
Acrylic ester emulsion 50-67%
Light trigger 1-4%
Filler 10-15%
Thickening material 2-3%
Auxiliary agent 2-9%
Virahol 8-10%
Deionized water 10-15%.
Described properties-correcting agent nano-cellulose is CNC suspension, and solid content is 0.5-3.7%, and its preparation method is: with the vitriolization Microcrystalline Cellulose MCC of concentration 54%, mass ratio MCC:H
2sO
4=1:(4.4-5.1), acidolysis temperature is 46 DEG C, and the time is 95min-120min; Add deionized water and stop acidolysis reaction, then carry out centrifuge washing, centrifugal speed 6000rpm, time 5min, number of times 4 times-5 times; Carry out dialysis subsequently and remove acid ion, 70% power ultrasonic process 20min-35min; Obtain nano-cellulose solution C NC.
Described properties-correcting agent silane coupling agent is the one in A-150, A-151, A-171, A-172, A-1100, A-187, A-174, A-1891, A-189, A-1120, KH-550, KH-560, KH-570, KH-580, KH-590, KH-902, KH-903, KH-792.
Described CNC suspension and properties-correcting agent silane coupling agent modified synergic, silane coupled dose variations while keeping CNC suspension content constant, gained coating performance is different.
The preparation method of the water-borne UV-curing woodenware coating of high abrasion, comprises the following steps:
1) aqueous UV curing coating is added in proportion in a kettle., CNC suspension and silane coupling agent;
2) aqueous UV curing coating and properties-correcting agent blended, the room temperature ultrasonic vibration time is lh;
3) by pressure injection, reference standard 98PSI, Japan, be deposited on modified paint on base material;
4) base material is placed in blast drier drying and removes coating excessive moisture;
5) base material after step 4) process is put in UV curing carries out radiation curing.
Described base material will be polished before covering with paint, lacquer, colour wash, etc. and be wiped the surface dirt on model with clean dry cloth, about 60 μm of coat-thickness; Base material can be solid wood board, multi-ply wood, the shaving board of veneer overlay, the fibre board material of veneer overlay.
Base material after described spraying is placed in 60 DEG C of dry 20min of blast drier and removes coating excessive moisture.
The base material of blast drier drying is carried out radiation curing in UV curing, and UV oil lamp number is 1, and wattage is 1000W, and lamp is apart from being 30cm, and time of drying is 20min.
Embodiment 1
The preparation method of the water-borne UV-curing woodenware coating of high abrasion.Get 3g aqueous UV curing coating respectively, 0.09gCNC suspension, (CNC suspension solid content is 1.7%), 0.03g silane coupling agent KH560.Prepare original water-based UV solidified coating A and blank sample; CNC waterborne UV coating compound coating B; CNC, KH560 waterborne UV coating compound coating C.Concrete preparation method is the quality of required coating and properties-correcting agent under taking above-mentioned experiment condition, and blended, room temperature ultrasonic vibration lh, makes properties-correcting agent be dispersed in coating.(reference standard 98PSI is sprayed by certain pressure, Japan), modified paint is deposited on base material, base material is the Eucalyptus multi-ply wood through No. 1000 sand paperings, wipe the surface dirt on model with clean dry cloth before covering with paint, lacquer, colour wash, etc., about 60 μm of coat-thickness, often organizes test conditions and sprays 5 models, the base material after spraying is placed in 60 DEG C of dry 20min of blast drier and removes coating excessive moisture.Then in UV curing, carry out radiation curing, UV oil lamp number is 1, and wattage is 1000W, and lamp is apart from being 30cm, and time of drying is 20min.Sample after solidification carries out performance test after leaving standstill 24h, and result is as follows:
Embodiment 2
The preparation method of the water-borne UV-curing woodenware coating of high abrasion.Get 3g aqueous UV curing coating respectively, 0.09gCNC suspension, (CNC suspension solid content is 1.7%), 0.06g silane coupling agent KH560.Prepare original water-based UV solidified coating A and blank sample; CNC waterborne UV coating compound coating B; CNC, KH560 waterborne UV coating compound coating D.Preparation method is with embodiment 1.Sample after solidification carries out performance test after leaving standstill 24h, and result is as follows:
Embodiment 3
The preparation method of the water-borne UV-curing woodenware coating of high abrasion.Get 3g aqueous UV curing coating respectively, 0.09gCNC suspension, (CNC suspension solid content is 1.7%), 0.06g silane coupling agent KH560.Prepare original water-based UV solidified coating A and blank sample; CNC waterborne UV coating compound coating B; CNC, KH560 waterborne UV coating compound coating E.Preparation method is with embodiment 1.Sample after solidification carries out performance test after leaving standstill 24h, and result is as follows:
Embodiment 4
The preparation method of the water-borne UV-curing woodenware coating of high abrasion.Get 3g aqueous UV curing coating respectively, 0.09gCNC suspension, (CNC suspension solid content is 1.7%), 0.06g silane coupling agent KH560.Prepare original water-based UV solidified coating A and blank sample; CNC waterborne UV coating compound coating B; CNC, KH560 waterborne UV coating compound coating F.Preparation method is with embodiment 1.Sample after solidification carries out performance test after leaving standstill 24h, and result is as follows:
Embodiment 5
The preparation method of the water-borne UV-curing woodenware coating of high abrasion.Get 3g aqueous UV curing coating respectively, 0.09gCNC suspension, (CNC suspension solid content is 1.7%), 0.06g silane coupling agent KH560.Prepare original water-based UV solidified coating A and blank sample; CNC waterborne UV coating compound coating B; CNC, KH560 waterborne UV coating compound coating G.Preparation method is with embodiment 1.Sample after solidification carries out performance test after leaving standstill 24h, and result is as follows:
Claims (9)
1. the water-borne UV-curing woodenware coating of high abrasion, it is characterized in that being made up of aqueous UV curing coating, properties-correcting agent nano-cellulose and CNC suspension, properties-correcting agent silane coupling agent, wherein CNC suspension: aqueous UV curing coating=(1.38-10.20): 100; CNC suspension: properties-correcting agent silane coupling agent=(1.38-10.20): (0-5).
2. the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 1, is characterized in that described aqueous UV curing coating component is
Acrylic ester emulsion 50-67%
Light trigger 1-4%
Filler 10-15%
Thickening material 2-3%
Auxiliary agent 2-9%
Virahol 8-10%
Deionized water 10-15%.
3. the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 1, it is characterized in that described properties-correcting agent nano-cellulose is CNC suspension, solid content is 0.5-3.7%, and its preparation method is: with the vitriolization Microcrystalline Cellulose MCC of concentration 54%, mass ratio MCC:H
2sO
4=1:(4.4-5.1), acidolysis temperature is 46 DEG C, and the time is 95min-120min; Add deionized water and stop acidolysis reaction, then carry out centrifuge washing, centrifugal speed 6000rpm, time 5min, number of times 4 times-5 times; Carry out dialysis subsequently and remove acid ion, 70% power ultrasonic process 20min-35min; Obtain nano-cellulose solution C NC.
4. the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 1, is characterized in that described properties-correcting agent silane coupling agent is A-150, A-151, A-171, A-172, A-1100, A-187, A-174, A-1891, A-189, A-1120, KH-550, KH-560, KH-570, KH-580, KH-590, one in KH-902, KH-903, KH-792.
5. the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 1, it is characterized in that described CNC suspension and properties-correcting agent silane coupling agent modified synergic, silane coupled dose variations while keeping CNC suspension content constant, gained coating performance is different.
6. the preparation method of the water-borne UV-curing woodenware coating of a kind of high abrasion as claimed in claim 1, is characterized in that comprising the following steps:
1) aqueous UV curing coating is added in proportion in a kettle., CNC suspension and silane coupling agent;
2) aqueous UV curing coating and properties-correcting agent blended, the room temperature ultrasonic vibration time is lh;
3) by pressure injection, reference standard 98PSI, Japan, be deposited on modified paint on base material;
4) base material is placed in blast drier drying and removes coating excessive moisture;
5) base material after step 4) process is put in UV curing carries out radiation curing.
7. the preparation method of the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 6, is characterized in that will polishing before described base material is covered with paint, lacquer, colour wash, etc. and wiping the surface dirt on model with clean dry cloth, about 60 μm of coat-thickness; Base material can be solid wood board, multi-ply wood, the shaving board of veneer overlay, the fibre board material of veneer overlay.
8. the preparation method of the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 6, is characterized in that the base material after described spraying is placed in 60 DEG C of dry 20min of blast drier and removes coating excessive moisture.
9. the preparation method of the water-borne UV-curing woodenware coating of a kind of high abrasion according to claim 8, it is characterized in that the base material of blast drier drying to carry out radiation curing in UV curing, UV oil lamp number is 1, and wattage is 1000W, lamp is apart from being 30cm, and time of drying is 20min.
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Cited By (3)
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| CN106380966A (en) * | 2016-08-31 | 2017-02-08 | 江苏吉福新材料股份有限公司 | Multifunctional UV aqueous coating and preparation method thereof |
| CN109629326A (en) * | 2018-11-08 | 2019-04-16 | 上海大学 | A kind of preparation method and application obstructing hydrophobic paper base coating |
| WO2020047733A1 (en) * | 2018-09-04 | 2020-03-12 | 江苏吉福新材料股份有限公司 | Multi-functional uv water-based paint and preparation method therefor |
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