CN117186761A - 172nm excimer UV (ultraviolet) spray skin-feel varnish and preparation and use methods thereof - Google Patents
172nm excimer UV (ultraviolet) spray skin-feel varnish and preparation and use methods thereof Download PDFInfo
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- CN117186761A CN117186761A CN202311327776.XA CN202311327776A CN117186761A CN 117186761 A CN117186761 A CN 117186761A CN 202311327776 A CN202311327776 A CN 202311327776A CN 117186761 A CN117186761 A CN 117186761A
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- excimer
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002966 varnish Substances 0.000 title claims description 21
- 239000007921 spray Substances 0.000 title claims description 13
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000004814 polyurethane Substances 0.000 claims abstract description 37
- 229920002635 polyurethane Polymers 0.000 claims abstract description 33
- 239000003085 diluting agent Substances 0.000 claims abstract description 25
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 22
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 21
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 17
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000080 wetting agent Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- -1 EOEOEA Chemical compound 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 4
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229920002050 silicone resin Polymers 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims 1
- 239000003999 initiator Substances 0.000 abstract description 46
- 239000003973 paint Substances 0.000 abstract description 29
- 238000000576 coating method Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000000016 photochemical curing Methods 0.000 abstract description 2
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 10
- 238000001723 curing Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000013530 defoamer Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- BTJPUDCSZVCXFQ-UHFFFAOYSA-N 2,4-diethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC(CC)=C3SC2=C1 BTJPUDCSZVCXFQ-UHFFFAOYSA-N 0.000 description 1
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 description 1
- 241000755729 Clivia Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004972 Polyurethane varnish Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The application relates to the technical field of photo-curing coatings, in particular to the field of IPC C09D 175, and more particularly relates to 172nm excimer UV (ultraviolet) spraying skin-feel clear finishing paint and a preparation and use method thereof. The components in percentage by weight are: 50-80% of polyurethane acrylic resin, 1-5% of organic silicon resin, 0.5-3% of photoinitiator, 0.5-3% of matte powder, 0.5-3% of auxiliary agent and the balance of diluent. The photoinitiator comprises an MBF initiator and a TPO initiator, wherein the weight ratio of the MBF initiator to the TPO initiator is 1: (2-3.5), and using 172n m ultraviolet radiation, excellent matte skin feel effect can be obtained.
Description
Technical Field
The application relates to the technical field of photo-curing coatings, in particular to the field of IPC C09D 175, and more particularly relates to 172nm excimer UV (ultraviolet) spraying skin-feel clear finishing paint and a preparation and use method thereof.
Background
Various plates are used in industries such as building interior decoration, furniture and the like, people touch the plates, the surfaces which can be directly seen by eyes are more and more required, meanwhile, the requirements are higher and higher, the facing processing performed on the surfaces of the plates is also widened variously, various facing materials and facing processing technologies are derived, and the application of the UV finishing paint is wider and wider. However, the UV finishing paint is easy to have uneven gloss due to extinction influence, and has poorer skin feel effect compared with the traditional PU and water-based finishing paint. Meanwhile, as the decoration large plate levels the paint surface, the requirements of glossiness and hand feeling are increased, the production efficiency is improved, and the development of the UV matte skin-feel finishing paint is also more and more urgent. Along with the running of 172nm excimer finish paint into the eyes of the masses, all furniture matte finish paints comprise PU, AC and water, and all three finish paints have certain defects, namely the defects of PU, AC and water paint: the drying time is long, mechanical coating cannot be realized, high-efficiency production is realized, a large amount of manpower and material resources are required, and a large amount of factory building area and space are required for drying the product.
CN114789129a discloses a UV-ultra-matte top-coating method and a top-coating paint applied to wood coating, the bottom coating is a conventional UV roller coating process, the top coating is a UV-ultra-matte top-coating process, and the special excimer equipment laser roller equipment is specifically used for roller coating by adopting the UV-ultra-matte top-coating paint. The surface of the paint film is provided with the fold texture after the excimer lamp is solidified to obtain super-matt, the addition amount of the matt powder is reduced, the hand feeling of the paint film is greatly improved, the leveling property of the paint surface is excellent, but the super-matt gloss is not good enough, and meanwhile, the hardness of the paint film is lower.
Disclosure of Invention
The application provides a 172nm excimer UV spray-coating skin feel varnish, which comprises the following components in percentage by weight: 50-80% of polyurethane acrylic resin, 1-5% of organic silicon resin, 0.5-3% of photoinitiator, 0.5-3% of matte powder, 0.5-3% of auxiliary agent and the balance of diluent.
Preferably, the components comprise, in weight percent: 60-70% of polyurethane acrylic resin, 1-3% of organic silicon resin, 1-2% of photoinitiator, 0.5-2% of matte powder, 0.5-3% of auxiliary agent and the balance of diluent.
The solid content of the polyurethane acrylic resin is 80-100wt%.
The functionality of the polyurethane acrylic resin is 2-6.
The viscosity (25 ℃) of the polyurethane acrylic resin is 20000-80000cps.
The polyurethane acrylic resin comprises difunctional polyurethane acrylate and hexafunctional polyurethane acrylate, and the weight ratio of the difunctional polyurethane acrylate to the hexafunctional polyurethane acrylate is (1.2-3): 1.
preferably, the urethane acrylic resin comprises difunctional urethane acrylate and hexafunctional urethane acrylate, and the weight ratio of the difunctional urethane acrylate to the hexafunctional urethane acrylate is (1.2-2): 1.
further preferably, the urethane acrylic resin comprises difunctional urethane acrylate and hexafunctional urethane acrylate, and the weight ratio of the difunctional urethane acrylate to the hexafunctional urethane acrylate is 1.6:1.
preferably, the difunctional urethane acrylate has a viscosity (25 ℃) of 22000-32000cps and a solids content of 85wt%, available from Changxing chemical industry (China) Co., ltd., model: 611B-85.
Preferably, the hexafunctional urethane acrylate has a viscosity (25 ℃) of 55000 to 75000cps and a solids content of 100wt%, and is available from Changxing chemical industry (China) Inc., model: 6145-100.
The diluent comprises at least one of HDDA (1, 6-hexanediol diacrylate), EOEOEA (ethoxyethoxyethyl acrylate), TMPTA (trimethylolpropane triacrylate), TPGDA (tripropylene glycol diacrylate).
The inventor researches find that the diluent comprises TPGDA and HDDA, and the weight ratio of the TPGDA to the HDDA is 1: (1-3) can improve the hardness and scratch resistance of the cured paint film, possibly increase the crosslinking and the stereospecificity of the molecules of the finish paint, and simultaneously promote the dispersion performance of the hexafunctional polyurethane acrylate and the difunctional polyurethane acrylate.
Preferably, the diluent comprises TPGDA and HDDA, and the weight ratio of TPGDA to HDDA is 1: (1-3).
Preferably, the diluent comprises TPGDA and HDDA, and the weight ratio of TPGDA to HDDA is 1: (1.5-2.2).
Further preferably, the diluent comprises TPGDA and HDDA, and the weight ratio of the TPGDA to the HDDA is 1:1.7.
the organic silicon resin comprises organic silicon modified polyurethane acrylate oligomer, the viscosity (30 ℃) of the organic silicon modified polyurethane acrylate oligomer is 8000-20000cps, and the functionality is 4-6.
Preferably, the silicone resin comprises a silicone modified urethane acrylate oligomer having a viscosity (30 ℃) of 9000-16000cps and a functionality of 6, available from the Guangdong Boxing New Material science, inc., model: b-828.
The auxiliary agent comprises a wetting agent, a defoaming agent and a leveling agent.
Preferably, the weight ratio of the wetting agent, the defoaming agent and the leveling agent is 1: (0.1-0.4): (0.2-0.6).
Further preferably, the auxiliary agent comprises a wetting agent, an antifoaming agent and a leveling agent, wherein the weight ratio of the wetting agent to the antifoaming agent to the leveling agent is 1:0.2:0.3.
preferably, the wetting agent is available from basf (china), model number: EFKA4010
Preferably, the defoamer is purchased from the sea name si modus (Shanghai) chemical industry limited, model: 6500.
preferably, the leveling agent is purchased from win-win specialty chemistry (Shanghai), inc., model: TEGO450.
The photoinitiator comprises at least one of a cleavage type photoinitiator and a hydrogen abstraction type photoinitiator.
Preferably, the ultraviolet absorption peak of the photoinitiator is 300 nm-400 nm.
Preferably, the photoinitiator comprises at least one of a TPO initiator, a TPO-L initiator, a 1173 initiator, a 819 initiator, an MBF initiator, a BDK initiator, a BP initiator, an ITX initiator, a DETX initiator, an EMK initiator.
Preferably, the photoinitiator comprises MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1: (2-3.5).
The inventor researches find that the photoinitiator comprises MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1: (2-3.5), and using 172n m ultraviolet radiation, can obtain the very good matte effect, probably the acrylic ester double bond in this UV coating is through 172n m ultraviolet radiation in the nitrogen environment (the oxygen concentration is lower than 100 ppm), the depth of cure can be controlled at 100-500nm, therefore only a layer of extremely thin coating film of surface is solidified, this thin layer shrinks and forms the uneven surface after the chemical reaction, float and form matte and skin effect on the uncured coating of lower floor, and then through UV mercury lamp or EB solidification radiation and solidify completely to reach the matte effect, reduce the consumption of the matte powder, make the surface luster even, the fine and smooth hand feeling, the levelling is very good, gloss 3-5 °.
Further preferably, the photoinitiator comprises MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1: (2-2.5).
Further preferably, the photoinitiator comprises MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1:2, the MBF initiator is purchased from double bond chemical industry (Shanghai) limited company, and the TPO initiator is purchased from Hubei solid wetting science and technology Co., ltd., model: GR-TPO.
The particle size of the matte powder is 2-10 mu m.
Preferably, the particle size of the matte powder is 3 μm, brand: de Gusai, model: OK500.
The second aspect of the application provides a preparation method of 172nm excimer UV spray-coating skin feel varnish, which comprises the following steps: sequentially adding polyurethane acrylic resin, a diluent, a wetting agent and a defoaming agent, stirring uniformly, adding a photoinitiator, matte powder and a leveling agent while stirring, and dispersing uniformly to obtain the polyurethane acrylic resin foam.
Preferably, the preparation method of the 172nm excimer UV spray skin feel varnish comprises the following steps: sequentially adding polyurethane acrylic resin, diluent, wetting agent and defoamer, stirring (700 rpm) uniformly, adding photoinitiator, matte powder and flatting agent while stirring, and obtaining the polyurethane foam with the dispersion fineness of 15 mu m.
The third aspect of the application provides a use method of 172nm excimer UV spray coating skin feel varnish, which comprises the following steps:
s1, adding a diluent to dilute to a viscosity of 40-50cps, and mechanically spraying and leveling;
s2, firstly, performing pre-curing by using an LED-UV lamp, and then injecting nitrogen;
s3, performing surface layer solidification by using a 172nm excimer lamp;
and S4, finally curing by using a mercury lamp to obtain the product.
Preferably, the application method of the 172nm excimer UV spray skin feel varnish comprises the following steps of:
s1, adding a diluent, diluting to a viscosity of 20cps (25 ℃) by using a salt pan 2# cup, and carrying out mechanical spraying, and leveling for 7-10 minutes by infrared rays at 40-50 ℃;
s2, firstly, performing pre-curing by using an LED-UV lamp, and then injecting nitrogen;
s3, performing surface layer solidification by using a 172nm excimer lamp;
and S4, finally curing by using a mercury lamp to obtain the product.
The curing energy of the mercury lamp is 350-450mj/cm 2 。
The UV paint prepared by the application can be directly sprayed mechanically by adding a proper amount of diluent in the use process, and meanwhile, the glossiness is not affected by seasons. The PU, AC and water paint needs to be added with a curing agent and a diluent before painting, the addition amount of the curing agent is strictly required, no or less addition can lead to non-drying paint films, poor adhesive force and embrittlement of the added paint films to lead to a later cracking of the product.
The beneficial effects are that:
1. the photoinitiator comprises an MBF initiator and a TPO initiator, wherein the weight ratio of the MBF initiator to the TPO initiator is 1: (2-3.5), and using 172n m ultraviolet radiation, excellent matte skin feel effect can be obtained.
2. The diluent comprises TPGDA and HDDA, wherein the weight ratio of the TPGDA to the HDDA is 1:
(1-3) the hardness and scratch resistance of the cured paint film can be improved.
3. The particle size of the matte powder is 2-10 mu m, and the antifouling property and hardness of the paint film surface can be improved.
4. The UV paint prepared by the application can be directly sprayed mechanically by adding a proper amount of diluent in the use process, and meanwhile, the glossiness is not affected by seasons.
5. The UV paint prepared by the method is solidified for 30 minutes, and can be finished after the surface is cooled, so that the production efficiency is improved.
Detailed Description
Example 1
The 172nm excimer UV spray-coating skin feel varnish comprises the following components in percentage by weight: 65% of polyurethane acrylic resin, 3% of organic silicon resin, 1.5% of photoinitiator, 2% of matte powder, 1.5% of auxiliary agent and the balance of diluent.
The diluent comprises TPGDA and HDDA, wherein the weight ratio of the TPGDA to the HDDA is 1:1.7.
the polyurethane acrylic resin is difunctional polyurethane acrylic ester and hexafunctional polyurethane acrylic ester, and the weight ratio of the difunctional polyurethane acrylic ester to the hexafunctional polyurethane acrylic ester is 1.6:1.
the difunctional urethane acrylate has a viscosity (25 ℃) of 22000-32000cps and a solid content of 85wt%, and is purchased from Changxing chemical industry (China) Co., ltd., model: 611B-85.
The six-functional urethane acrylate has a viscosity (25 ℃) of 55000-75000cps and a solid content of 100wt%, and is purchased from Changxing chemical industry (China) Co., ltd., model: 6145-100.
The organic silicon resin is organic silicon modified polyurethane acrylate oligomer, the viscosity (30 ℃) of the organic silicon modified polyurethane acrylate oligomer is 9000-16000cps, the functionality is 6, and the organic silicon resin is purchased from Guangdong Boxing New Material science and technology Co., ltd., model: b-828.
The auxiliary agent is wetting agent, defoaming agent and leveling agent, and the weight ratio of the wetting agent to the defoaming agent to the leveling agent is 1:0.2:0.3; the wetting agent is available from basf (china), model number: EFKA4010; the defoamer is purchased from sea name of the humus chemical industry limited company, model: 6500; the leveling agent is purchased from win-win specialty chemical (Shanghai) limited, model: TEGO450.
The photoinitiator is MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1:2, the MBF initiator is purchased from double bond chemical industry (Shanghai) limited company, and the TPO initiator is purchased from Hubei solid wetting science and technology Co., ltd., model: GR-TPO.
The particle size of the matte powder is 3 mu m, and the brand: de Gusai, model: OK500.
A preparation method of 172nm excimer UV spray-coating skin feel varnish comprises the following steps: sequentially adding polyurethane acrylic resin, diluent, wetting agent and defoamer, stirring (700 rpm) uniformly, adding photoinitiator, matte powder and flatting agent while stirring, and obtaining the polyurethane foam with the dispersion fineness of 15 mu m.
The application method of the 172nm excimer UV spray-coating skin-feel varnish comprises the following steps:
s1, adding a diluent, diluting to a viscosity of 45cps (25 ℃) by using a salt pan No. 2 cup, and mechanically spraying with a spraying amount of 110g/m 2 Infrared leveling at 45 ℃ for 8 minutes;
s2, pre-curing by using an energy-adjustable LED-UV lamp, providing a foundation for different skin feel effects, and then injecting nitrogen;
s3, using a 172nm excimer lamp to carry out surface layer solidification, wherein the solidification energy is 100mW/cm 2 。
S4, finally curing by using a mercury lamp to obtain the product with the curing energy of 400mj/cm 2 。
Example 2
The detailed description is the same as example 1; except that in example 2: the diluent comprises TPGDA and HDDA, wherein the weight ratio of the TPGDA to the HDDA is 1:2.
example 3
The detailed description is the same as example 1; except that in example 3: the photoinitiator is MBF initiator and TPO initiator, and the weight ratio of the MBF initiator to the TPO initiator is 1:2.5
Comparative example 1
Jiuji dumb PU varnish, self-produced by the company (Shanghai Junza New Material Co., ltd.), model: h-76539.
Comparative example 2
Water-based Jiuji matte finish paint, self-produced by the company (Shanghai Junza New Material Co., ltd.), model: c-6139-2.
Comparative example 3
AC Jiuji matt varnish, self-produced by this company (Shanghai clivia new materials stock limited), model: h-77539.
Comparative example 4
The detailed description is the same as example 1; except that in example 4: the weight ratio of the difunctional urethane acrylate to the hexafunctional urethane acrylate is 2:1.
performance test method
Performance tests were performed in examples and comparative examples and the test data are listed in table 1.
1. Coating surface hardness: GB/T37005-2018 clause 5.4.1 is carried out according to the method of GB/T6739-2006.
2. Stain resistance: referring to KCMA A161.1-2000 IOS-TM-0002, the test piece is rubbed back and forth with alcohol 200 times (under a load of 1kg force) without fading to pass, otherwise, the test piece is failed.
3. Scratch resistance: the coin is used for carrying out the test for 20 times back and forth, the scratch is not generated, and the test is qualified, otherwise, the test is not qualified.
4. Gloss level: referring to LY/T1658-2015, 60℃and 80℃angles were tested.
5. Construction time length: the time from the start of the construction to the complete drying of the paint film.
Performance test data
TABLE 1
Claims (10)
1. A172 nm excimer UV spray-coating skin feel varnish is characterized by comprising the following components in percentage by weight: 50-80% of polyurethane acrylic resin, 1-5% of organic silicon resin, 0.5-3% of photoinitiator, 0.5-3% of matte powder, 0.5-3% of auxiliary agent and the balance of diluent.
2. The 172nm excimer UV spray skin feel varnish according to claim 1, wherein the polyurethane acrylic resin has a solids content of 80-100wt%.
3. A 172nm excimer UV spray skin feel varnish according to claim 2, wherein the polyurethane acrylic resin has a functionality of 2-6.
4. A 172nm excimer UV spray skin feel varnish according to claim 3, wherein the polyurethane acrylic resin has a viscosity of 20000 to 80000cps.
5. The 172nm excimer UV spray skin feel varnish according to claim 4, wherein the urethane acrylate resin comprises a difunctional urethane acrylate and a hexafunctional urethane acrylate, and the weight ratio of the difunctional urethane acrylate to the hexafunctional urethane acrylate is (1.2-3): 1.
6. a 172nm excimer UV spray skin feel varnish according to claim 1 or claim 5, wherein said diluent comprises at least one of HDDA, EOEOEA, TMPTA, TPGDA.
7. The 172nm excimer UV spray skin feel varnish of claim 6, wherein the silicone resin comprises a silicone modified urethane acrylate oligomer having a viscosity of 8000-20000cps and a functionality of 4-6.
8. A 172nm excimer UV spray skin feel varnish according to claim 7, wherein said adjuvants comprise wetting agents, antifoaming agents and levelling agents.
9. A method of preparing a 172nm excimer UV spray skin feel varnish according to claim 8, comprising the steps of: sequentially adding polyurethane acrylic resin, a diluent, a wetting agent and a defoaming agent, stirring uniformly, adding a photoinitiator, matte powder and a leveling agent while stirring, and dispersing uniformly to obtain the polyurethane acrylic resin foam.
10. A method of using a 172nm excimer UV spray skin feel varnish according to any one of claims 1 to 8, comprising the steps of:
s1, adding a diluent to dilute to a viscosity of 10-30cps, and mechanically spraying and leveling;
s2, firstly, performing pre-curing by using an LED-UV lamp, and then injecting nitrogen;
s3, performing surface layer solidification by using a 172nm excimer lamp;
and S4, finally curing by using a mercury lamp to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327776.XA CN117186761A (en) | 2023-10-13 | 2023-10-13 | 172nm excimer UV (ultraviolet) spray skin-feel varnish and preparation and use methods thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327776.XA CN117186761A (en) | 2023-10-13 | 2023-10-13 | 172nm excimer UV (ultraviolet) spray skin-feel varnish and preparation and use methods thereof |
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| Publication Number | Publication Date |
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| CN117186761A true CN117186761A (en) | 2023-12-08 |
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|---|---|---|---|
| CN202311327776.XA Pending CN117186761A (en) | 2023-10-13 | 2023-10-13 | 172nm excimer UV (ultraviolet) spray skin-feel varnish and preparation and use methods thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117820947A (en) * | 2023-12-28 | 2024-04-05 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117820947A (en) * | 2023-12-28 | 2024-04-05 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
| CN117820947B (en) * | 2023-12-28 | 2024-07-23 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
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