阅读说明：本技术 一种往复喷涂的uv-led固化附着底漆及其制备方法 (Reciprocating spraying UV-LED curing adhesion primer and preparation method thereof ) 是由 邹增荣 郑建鹏 谢灯咨 于 2021-08-26 设计创作，主要内容包括：本发明提供了一种往复喷涂的UV-LED固化附着底漆,采用环氧丙烯酸酯树脂为主要的成膜物质,聚氨酯丙烯酸树脂和聚酯丙烯酸树脂作为附着力和韧性的调整组分,并复配其他助剂,使得底漆的附着力高,适用于UV-LED的快速固化,简化了家具喷涂的施工难度,提高了施工效率。本发明还提供了上述UV-LED固化附着底漆的制备方法。该制备方法制备得到的UV-LED固化附着底漆,附着力高。(The invention provides a reciprocating spraying UV-LED curing adhesion primer, which adopts epoxy acrylate resin as a main film forming substance, polyurethane acrylic resin and polyester acrylic resin as adhesion and toughness adjusting components, and is compounded with other auxiliary agents, so that the primer has high adhesion, is suitable for rapid curing of UV-LED, simplifies the construction difficulty of furniture spraying, and improves the construction efficiency. The invention also provides a preparation method of the UV-LED curing adhesion primer. The UV-LED curing adhesion primer prepared by the preparation method has high adhesion.)

1. The reciprocating spraying UV-LED curing adhesion primer is characterized by comprising the following components in parts by weight:

2. the UV-LED curing adhesion primer according to claim 1, which comprises the following components in parts by weight:

3. the UV-LED curing adhesion primer according to claim 1, which comprises the following components in parts by weight:

4. the UV-LED curing adhesion primer according to claim 1, wherein the leveling agent comprises, in parts by weight:

10.1 to 0.5 portion of flatting agent,

20.2 to 0.5 portion of flatting agent,

30.1-1 parts of a leveling agent.

5. The UV-LED curing adhesion primer according to claim 4, wherein the leveling agent 1 is a BYK-358N leveling agent, the leveling agent 2 is a TEGO 2100 leveling agent, and the leveling agent 3 is a TEGO 270 leveling agent.

6. The UV-LED cured adhesion primer of claim 1, wherein the urethane acrylic is BC-601, the epoxy acrylic is YTM2000, and the polyester acrylic is CR 90459.

7. The UV-LED cured adhesion primer of claim 1, wherein the wetting agent is at least one of a polyether modified polydimethylsiloxane, a polyether modified trisiloxane, or an aralkyl modified polymethylsiloxane.

8. The UV-LED cured adhesion primer of claim 1, wherein the photoinitiator is at least one of 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, bis (2,4, 6-trimethylbenzoyl) phenylphosphine oxide, 1-hydroxycyclohexylphenylmethanone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] -1-propanone, or 2-methyl-2- (4-morpholino) -1- [4- (methylthio) phenyl ] -1-propanone;

the filler is talcum powder and zinc powder; the monomers are dipropylene glycol diacrylate and hydroxyethyl methacrylate.

9. A process for the preparation of a UV-curable matte white finish according to any one of claims 1 to 8, comprising the following steps:

s1, putting polyurethane acrylic resin, epoxy acrylic resin and polyester acrylic resin into a reaction kettle according to parts by weight, dispersing at the stirring speed of 600 plus materials at 800rpm, sequentially weighing a wetting agent, a defoaming agent, an anti-settling auxiliary agent, a leveling agent, a photoinitiator and an auxiliary initiator, adding into the reaction kettle, and dispersing for 10 min;

s2, adding a filler, increasing the rotating speed to 1000-ion 1200rpm, stirring for 25min, adding the monomer, the adhesive force pure acrylic resin, the adhesive force promoting additive and the organic solvent, reducing the stirring speed of the reaction kettle to 400-ion 600rpm, and stirring for 10min to obtain the product.

Technical Field

The invention relates to the technical field of paint production, in particular to a reciprocating spraying UV-LED curing adhesion primer and a preparation method thereof.

Background

With the wider application range of UV-LED curing in the field of radiation curing coating, the spraying mode of furniture is modified through a production line, and the sprayed UV-LED curing paint is also adopted comprehensively.

The existing UV-LED curing paint has poor paint film uniformity due to back-and-forth spraying, and can not well meet the use requirements of users.

Chinese patent publication No. CN111548711A discloses a spray wood lacquer for UV-LED curing, which comprises the following raw materials by mass: acrylic resin: 30% -45%, photoinitiator: 5% -8%, talcum powder: 10-20%, dispersant: 0.1% -2%, reactive diluent: 36 to 46 percent; the spraying wood lacquer of the patent mainly adopts acrylic resin to form a film, wherein the acrylic resin is modified polyester acrylate resin and six-membered aliphatic polyurethane acrylic resin in a weight ratio of (2.0-3.5): 1, the pure acrylic resin has large polarity and large molecular weight, has adhesive force to various substrates difficult to adhere, but can only be added as a performance improvement aid without a reactive group.

Therefore, it is very important to develop a UV-LED spray primer with good adhesion.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the reciprocating spraying UV-LED curing adhesion primer, which adopts epoxy acrylate resin as a main film forming substance, polyurethane acrylic resin and polyester acrylic resin as adjusting components of adhesion and toughness, and is compounded with other auxiliary agents, so that the adhesion of the primer is high, the primer is suitable for rapid curing of UV-LED, the furniture spraying construction difficulty is simplified, and the construction efficiency is improved. The invention also provides a preparation method of the UV-LED curing adhesion primer.

In order to achieve the purpose, the invention provides the following technical scheme:

the reciprocating spraying UV-LED curing adhesion primer comprises the following components in parts by weight:

preferably, the UV-LED curing adhesion primer comprises the following components in parts by weight:

preferably, the UV-LED curing adhesion primer comprises the following components in parts by weight:

further, the leveling agent comprises the following components in parts by weight:

10.1 to 0.5 portion of flatting agent,

20.2 to 0.5 portion of flatting agent,

30.1-1 parts of a leveling agent.

Wherein, the leveling agent 1 provides a leveling effect; the leveling agent 2 provides a quick leveling effect; the levelling agent 3 is primarily intended to improve the wetting of the substrate.

Further, the leveling agent 1 is a BYK-358N leveling agent, the leveling agent 2 is a TEGO 2100 leveling agent, and the leveling agent 3 is a TEGO 270 leveling agent.

Further, the polyurethane acrylic resin is BC-601, the epoxy acrylic resin is YTM2000, and the polyester acrylic resin is CR 90459.

In the film-forming resin, the epoxy acrylate resin has small polarity and high molecular weight, high reaction speed and general adhesive force, can meet the requirement of UV-LED curing, but has poor adhesive force; the polyester acrylate resin has small polarity and high molecular weight, the resin has good flexible adhesive force but slow reaction speed, can meet the requirement on the adhesive force, but cannot meet the requirement on UV-LED curing; the polyurethane acrylate resin has small polarity, high molecular weight and high reaction speed, and can be used as a performance adjusting aid for epoxy resin and polyester resin. In addition, the pure acrylic resin has large polarity and large molecular weight, has adhesive force to various substrates difficult to adhere, but does not have a reactive group and can only be added as a performance improvement aid.

Therefore, the polyurethane acrylic resin, the epoxy acrylic resin and the polyester acrylic resin are compounded, the epoxy acrylic resin is a main film forming substance, the polyurethane acrylic resin and the polyester acrylic resin are used as adjusting components of the adhesive force and the toughness, and the pure acrylic resin is added, so that the UV-LED curing adhesive has good adhesive force on base materials difficult to adhere, and is suitable for reciprocating spraying and mechanical arm spraying of sectional materials.

Furthermore, the wetting agent is at least one of polyether modified polydimethylsiloxane, polyether modified trisiloxane or aralkyl modified polymethylsiloxane, and the wetting agent mainly improves the wetting pore-entering property of the system.

Further, the photoinitiator is at least one of 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, bis (2,4, 6-trimethylbenzoyl) phenylphosphine oxide, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] -1-propanone or 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-propanone;

the photoinitiator initiates free radical reaction; while co-initiators help to increase the initiation of free radical reactions and reduce the effects of surface oxygen inhibition.

In order to meet the requirements of UV-LED curing and yellowing resistance, TPO (thermoplastic polyolefin) 819 is selected as a photoinitiation system, and primary amine active amine is used as an auxiliary initiator.

The filler is talcum powder and zinc powder; the filler mainly plays a role in filling, and the selection of the acidic filler is beneficial to improving the adhesive force.

The monomers are dipropylene glycol diacrylate and hydroxyethyl methacrylate.

The monomer is used for assisting film formation and reducing the viscosity of the system. The conventional non-modified monomers TPGDA, DPGDA, HDDA and TMPTA have small molecular weight and moderate reaction speed and cannot be used as a main body.

In addition, in the UV-LED curing adhesion primer provided by the invention, the pure acrylic resin is mainly used for assisting in film forming and improving the adhesion, the adhesion promoter is mainly used for increasing the adhesion, and the organic solvent is mainly used for diluting.

The invention also provides a preparation method of the UV-LED curing adhesion primer, which comprises the following steps:

s1, putting polyurethane acrylic resin, epoxy acrylic resin and polyester acrylic resin into a reaction kettle according to parts by weight, dispersing at the stirring speed of 600 plus materials at 800rpm, sequentially weighing a wetting agent, a defoaming agent, an anti-settling auxiliary agent, a leveling agent, a photoinitiator and an auxiliary initiator, adding into the reaction kettle, and dispersing for 10 min;

s2, adding a filler, increasing the rotating speed to 1000-ion 1200rpm, stirring for 25min, adding the monomer, the adhesive force pure acrylic resin, the adhesive force promoting additive and the organic solvent, reducing the stirring speed of the reaction kettle to 400-ion 600rpm, and stirring for 10min to obtain the product.

Based on the technical scheme, the invention has the following technical effects:

(1) according to the UV-LED curing adhesion primer for reciprocating spraying, provided by the invention, the polyurethane acrylic resin, the epoxy acrylic resin and the polyester acrylic resin are compounded, the epoxy acrylic resin is a main film forming substance, the polyurethane acrylic resin and the polyester acrylic resin are used as adjusting components of the adhesion and toughness, and the pure acrylic resin is added, so that the UV-LED curing primer has good adhesion to base materials difficult to adhere while meeting the UV-LED curing requirement, and is suitable for reciprocating spraying of sectional materials and mechanical arm spraying.

(2) The UV-LED curing adhesion primer disclosed by the invention has the advantages that the auxiliary agents are selected to assist in film forming and improve the adhesion, and if the monomer selects the dipropylene glycol diacrylate and the hydroxyethyl methacrylate, the reaction speed and the adhesion can be ensured; the filler is selected to be a filler with acidity which is slightly acidic, so that the adhesion is improved.

(3) The primer prepared by the preparation method of the UV-LED curing adhesion primer provided by the invention has the advantages of good paint film uniformity, high adhesion, low odor and environmental friendliness.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. The invention provides a preferred embodiment. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The reciprocating spraying UV-LED curing adhesion primer comprises the following components in parts by weight:

the polyurethane acrylic resin is BC-601 of Guangzhou Boxing chemical industry, the epoxy acrylic resin is YTM2000 of Guangdong Nippon Changfu technical material company Limited, and the polyester acrylic resin is CR90459 of Guangdong Haohui new material.

The epoxy acrylate resin is a main film forming substance, the polyurethane acrylic resin and the polyester acrylic resin are used as adjusting components of adhesive force and toughness, and the pure acrylic resin is added, so that the UV-LED curing agent can meet the requirement of UV-LED curing, has good adhesive force on base materials difficult to adhere, and is suitable for reciprocating spraying and mechanical arm spraying of sectional materials.

The wetting agent is at least one of polyether modified polydimethylsiloxane, polyether modified trisiloxane or aralkyl modified polymethylsiloxane, such as BYK-103, and the wetting agent mainly improves the wetting pore-entering property of the system.

The defoaming agent can be TEGO920, BYK-141, BYK-052, BYK-066N or BYK-347 defoaming agent.

The flatting agent comprises the following components in parts by weight: 10.1-0.5 part of flatting agent, 20.2-0.5 part of flatting agent and 30.1-1 part of flatting agent.

The leveling agent 1 is a BYK-358N leveling agent (aralkyl modified polymethyl alkyl siloxane) and provides a leveling effect;

the leveling agent 2 is a TEGO 2100 leveling agent and provides a quick leveling effect;

leveling agent 3 is a TEGO 270 leveling agent, and is mainly used for improving the wetting effect of a base material.

The photoinitiator is at least one of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, bis (2,4, 6-trimethylbenzoyl) phenylphosphine oxide, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] -1-acetone or 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone; the model can be selected from 1108 and 1109 of the durable chemical. The photoinitiator initiates a free radical reaction.

The initiator aid can be P113 of Guangdong Nippon Changfu technology materials, Inc., and can help to increase the effect of initiating free radical reaction and reduce surface oxygen inhibition.

The filler is 1250 talcum powder and zinc powder; the filler mainly plays a role in filling, and the selection of the acidic filler is beneficial to improving the adhesive force.

The monomer is used for assisting film formation and reducing the viscosity of the system. The conventional non-modified monomers TPGDA, DPGDA, HDDA and TMPTA have small molecular weight and moderate reaction speed, and cannot be used as a main body, in the embodiment, dipropylene glycol diacrylate (DPGDA) is selected and matched with hydroxyethyl methacrylate (HEMA) to be used as a UV diluent, so that the reaction speed and the adhesive force can be ensured.

The adhesive pure acrylic resin is CMU-H24 of Guangdong Nippon Changfu technology material, Inc., and the adhesive promoter is HC5110 of Guangdong Haohui new material.

Example 1

The UV-LED curing adhesion primer comprises the following components in parts by weight:

the preparation method of the UV-LED curing adhesion primer specifically comprises the following steps:

s1, putting polyurethane acrylic resin, epoxy acrylic resin and polyester acrylic resin into a reaction kettle according to parts by weight, dispersing at the stirring speed of 600 plus materials at 800rpm, sequentially weighing a wetting agent, a defoaming agent, an anti-settling auxiliary agent, a leveling agent 1, a leveling agent 2, a leveling agent 3, a photoinitiator 1, a photoinitiator 2 and an auxiliary initiator, adding into the reaction kettle, and dispersing for 10 min;

s2, adding the filler 1 and the filler 2, increasing the rotating speed to 1000-plus-one 1200rpm, stirring for 25min, adding the monomer 1, the monomer 2, the adhesive force pure acrylic resin, the adhesive force promoting auxiliary agent and the organic solvent, reducing the stirring speed of the reaction kettle to 400-plus-one 600rpm, and stirring for 10min to obtain the product P1.

The viscosity of the UV-LED cured adhesion primer product P1 was 1000-.

Example 2

The UV-LED curing adhesion primer comprises the following components in parts by weight:

the preparation method of the UV-LED curing adhesion primer specifically comprises the following steps:

s1, putting polyurethane acrylic resin, epoxy acrylic resin and polyester acrylic resin into a reaction kettle according to parts by weight, dispersing at the stirring speed of 600 plus materials at 800rpm, sequentially weighing a wetting agent, a defoaming agent, an anti-settling auxiliary agent, a leveling agent 1, a leveling agent 2, a leveling agent 3, a photoinitiator 1, a photoinitiator 2 and an auxiliary initiator, adding into the reaction kettle, and dispersing for 10 min;

s2, adding the filler 1 and the filler 2, increasing the rotating speed to 1000-plus-one 1200rpm, stirring for 25min, adding the monomer 1, the monomer 2, the adhesive force pure acrylic resin, the adhesive force promoting auxiliary agent and the organic solvent, reducing the stirring speed of the reaction kettle to 400-plus-one 600rpm, and stirring for 10min to obtain the product P2.

The viscosity of the UV-LED cured adhesion primer product P2 was 1000-.

Example 3

The UV-LED curing adhesion primer comprises the following components in parts by weight:

the preparation method of the UV-LED curing adhesion primer specifically comprises the following steps:

s1, putting polyurethane acrylic resin, epoxy acrylic resin and polyester acrylic resin into a reaction kettle according to parts by weight, dispersing at the stirring speed of 600 plus materials at 800rpm, sequentially weighing a wetting agent, a defoaming agent, an anti-settling auxiliary agent, a leveling agent 1, a leveling agent 2, a leveling agent 3, a photoinitiator 1, a photoinitiator 2 and an auxiliary initiator, adding into the reaction kettle, and dispersing for 10 min;

s2, adding the filler 1 and the filler 2, increasing the rotating speed to 1000-plus-one 1200rpm, stirring for 25min, adding the monomer 1, the monomer 2, the adhesive force pure acrylic resin, the adhesive force promoting auxiliary agent and the organic solvent, reducing the stirring speed of the reaction kettle to 400-plus-one 600rpm, and stirring for 10min to obtain the product P3.

The viscosity of the UV-LED cured adhesion primer product P3 was 1100-.

Example 4

The UV-LED curing adhesion primer comprises the following components in parts by weight:

the preparation method of the UV-LED curing adhesion primer is the same as the preparation method of the example 1.

The viscosity of the UV-LED cured adhesion primer product P4 prepared was 1000-1100cps (rotational viscometer, 25 ℃).

Example 5

The UV-LED curing adhesion primer comprises the following components in parts by weight:

the preparation method of the UV-LED curing adhesion primer is the same as the preparation method of the example 1.

The viscosity of the UV-LED cured adhesion primer product P5 prepared was 1000-1200cps (rotational viscometer, 25 ℃).

The UV-LED cured adhesion primer products P1-P5 prepared in examples 1-5 were tested.

The test method comprises the following steps:

1. and (3) viscosity testing: 200ml of paint product was taken and tested for viscosity with a selective viscometer at oil temperature 25 ℃.

2. Open-dilution ratio test: paint product was tested at 200ml, diluted to a 13 second (rockfield # 2 cup, 25 ℃) ratio using an organic solvent diluent.

3.LED curing test: the paint product was drawn down on a triamine plate using a 100 μm wire rod and then subjected to a knife coating at an energy of UVV 1800-²The drying performance of the LED curing lamps was compared at different energies.

4. And (3) plate manufacturing test: polishing and flattening the rubber wood substrate, spraying a reciprocating UV-LED curing adhesion primer, wherein the coating amount is 100-²Naturally after 3 minutes, baking the mixture in an oven at 50 ℃ for 5 minutes at UVV of 2200-²And passing through the LED lamp.

And a result evaluation method comprises the following steps:

the paint film appearance was evaluated according to the 5.4.6 test in HG/T3655-,

the adhesion was evaluated according to the GB/T9286-1998 test,

the gloss was evaluated according to GB/T9754-2007 test,

the hardness is evaluated according to the test of GB/T6739-,

the viscosity was evaluated according to the 5.2 test in GB/T2794-,

the fineness was evaluated according to the GB/T6753.1-2007 test.

TABLE 1 data for performance testing of the primer products P1-P5 prepared in examples 1-5

Half-thinning the UV-LED curing adhesion primer products P1-P5 prepared in examples 1-5 to 12 seconds by using a thinner (butyl acetate: ethyl acetate: 1), performing thinning ratio tests to obtain paint liquid products D1-D5, respectively preparing the paint liquid products on a rubber wood substrate and an oily teak substrate into paint film products by using a spraying process, curing the paint liquid products by using a UV-LED lamp, and performing adhesion test on the paint film products to evaluate the comprehensive performance of the paint liquid products D1-D5, wherein the specific detection results are shown in the performance detection data of the paint liquid products D1-D5 in Table 2.

TABLE 2 data for performance testing of the corresponding paint liquid products D1-D5 prepared in examples 1-5

As can be seen from Table 2, the viscosity of the paint liquid products corresponding to the primers prepared in examples 1-5 all meet the requirements of the reciprocating spraying process. And after the paint liquid products D1-D5 are respectively prepared into paint films, the paint film products have good adhesive force on conventional oil-free base materials, wherein D4 and D5 have optimal 0-grade adhesive force on teak base materials with high oil content. This means that the UV-LED cured adhesion spray primers provided in examples 1 to 5 have the advantages of strong adhesion, satisfying necessary oil seals, and the like, and can satisfy market requirements.

Wherein, the paint liquid product D4 has lower open-end and thin-end ratio, and each performance of the prepared paint film product reaches higher level.

The foregoing is merely exemplary and illustrative of the structures of the present invention, which are described in some detail and detail, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.