CN103788863A - Low-temperature resistant UV (Ultraviolet)-curable coating material and preparation method thereof - Google Patents

Abstract

The invention relates to a low-temperature resistant UV (Ultraviolet)-curable coating material. The low-temperature resistant UV-curable coating material is prepared from the following raw materials in parts by weight: 40-45 parts of polyurethane acrylate prepolymer, 14-18 parts of epoxy acrylate, 5-7 parts of hydroxypropyl methacrylate, 8-12 parts of meerschaum powder, 3-5 parts of linoleic acid, 4-6 parts of dioctyl phthalate, 4-8 parts of methyl ethyl ketone, 1-2 parts of benzil dimethyl ketal, 10-14 parts of maleic anhydride, 3-6 parts of ammonium polyphosphate and 4-5 parts of auxiliaries. The UV coating material disclosed by the invention has high wear resistance, high adhesive power, high flexibility, high peeling strength, excellent low-temperature resistance and outstanding optical properties and weatherability; through adding the meerschaum powder, the shrinking percentage is lowered, a coating is difficult to crack, and the flame retardance is improved; the coating material further has the characteristics of low content of VOC (Volatile Organic Compounds), good decorative effect, high curing speed, easiness in construction, being suitable for assembly line production and the like, and can be applied to the decoration of base materials, such as plastics, woodenware, metals and the like; due to the auxiliaries, the dispersity of the coating material is improved, the leveling property is good, and a coating layer is smooth and bright.

Description

A kind of low temperature resistant UV photo-cured coating and preparation method thereof

Technical field

The invention belongs to paint field, relate in particular to a kind of low temperature resistant UV photo-cured coating and preparation method thereof.

Background technology

Photo-cured coating advantage is set time short (part second is arrived several minutes), solidification value is low, volatile matter is low, is to economize the energy, resource-saving, nuisanceless, high-level efficiency; But also there are some shortcomings, as free radical type photo-cured coating solidification process is prevented by oxygen, surface cure is bad, also have the series of problems such as xanthochromia, explosive look, not low temperature resistant, cost is high, corrosion-resistant, all need to continue improvement for different purposes, reduce production costs, expand purposes.

Summary of the invention

The object of the present invention is to provide a kind of low temperature resistant UV photo-cured coating and preparation method thereof, this coating has high-wearing feature, adhesive power, snappiness, high-peeling strength and good resistance to low temperature and remarkable optical property and weathering resistance, and shrinking percentage is low, coating is not easy to crack, and flame retardant properties is good.

Technical scheme of the present invention is as follows:

A kind of low temperature resistant UV photo-cured coating, is characterized in that being made up of the raw material of following weight part: polyurethane acrylate prepolymer 40-45, epoxy acrylate 14-18, Rocryl 410 5-7, sepiolite powder 8-12, linolenic acid 3-5, dioctyl phthalate 4-6, methylethylketone 4-8, benzoin dimethylether 1-2, maleic anhydride 10-14, ammonium polyphosphate 3-6, auxiliary agent 4-5;

Described auxiliary agent is made up of the raw material of following weight part: atlapulgite 2-3, nano tungsten trioxide 1-2, jojoba oil 1-2, methylene-succinic acid 4-6, acetyl peroxide 0.2-0.3, polypropylene adipate (PPA) 0.2-0.3,2-methyl methacrylate 2-3, propylene glycol 6-9, polydimethylsiloxane 5-7, dibutyl ethylene glycol ether 16-20; Preparation method mixes propylene glycol, dibutyl ethylene glycol ether, jojoba oil, under 10000-14000 rev/min of stirring, adds atlapulgite, nano tungsten trioxide; Add methylene-succinic acid, 2-methyl methacrylate, polypropylene adipate (PPA), polydimethylsiloxane again, be heated to 60-80 ℃, at 1300-1500 rev/min of lower stirring reaction 10-20 minute, add acetyl peroxide, stirring reaction 1-2 hour, to obtain final product.

The preparation method of described low temperature resistant UV photo-cured coating, is characterized in that comprising the following steps:

(1) by sepiolite powder, spray into while stirring vaporific linolenic acid, mix and place 1-2 hour;

(2) mixing of materials polyurethane acrylate prepolymer, epoxy acrylate, Rocryl 410, dioctyl phthalate, methylethylketone, maleic anhydride, ammonium polyphosphate and (1) step being obtained, be warming up to 60-80 ℃, divide lower stirring 15-20 minute at 1200-1400/, cool to 35 ℃ and add again below other remaining components, continue to grind and stir 10-20 minute, to obtain final product.

Beneficial effect of the present invention

UV coating of the present invention has high-wearing feature, adhesive power, snappiness, high-peeling strength and good resistance to low temperature and remarkable optical property and weathering resistance; By adding sepiolite powder, reduce shrinking percentage, coating is not easy to crack, increase flame retardant properties, it is fast that this coating also has low VOC, good decorating effect, curing speed, easily construction, is applicable to the features such as streamline production, can be used for the decoration of the base materials such as plastics, woodenware, metal.Auxiliary agent of the present invention has increased the dispersiveness of coating, good leveling property, and coating is light smoothly.

Embodiment

A kind of low temperature resistant UV photo-cured coating, by following weight part (kilogram) raw material make: polyurethane acrylate prepolymer 43, epoxy acrylate 16, Rocryl 410 6, sepiolite powder 10, linolenic acid 4, dioctyl phthalate 5, methylethylketone 6, benzoin dimethylether 1.5, maleic anhydride 12, ammonium polyphosphate 5, auxiliary agent 4.5;

Described auxiliary agent by following weight part (kilogram) raw material make: atlapulgite 2.5, nano tungsten trioxide 1.5, jojoba oil 1.5, methylene-succinic acid 5, acetyl peroxide 0.2, polypropylene adipate (PPA) 0.2,2-methyl methacrylate 2.5, propylene glycol 8, polydimethylsiloxane 6, dibutyl ethylene glycol ether 18; Preparation method mixes propylene glycol, dibutyl ethylene glycol ether, jojoba oil, under 12000 revs/min of stirrings, adds atlapulgite, nano tungsten trioxide; Add methylene-succinic acid, 2-methyl methacrylate, polypropylene adipate (PPA), polydimethylsiloxane again, be heated to 70 ℃, 1400 revs/min of lower stirring reactions 15 minutes, add acetyl peroxide, stirring reaction 1.5 hours, to obtain final product.

The preparation method of described low temperature resistant UV photo-cured coating, comprises the following steps:

(1) by sepiolite powder, spray into while stirring vaporific linolenic acid, mix and place 1.5 hours;

(2) mixing of materials polyurethane acrylate prepolymer, epoxy acrylate, Rocryl 410, dioctyl phthalate, methylethylketone, maleic anhydride, ammonium polyphosphate and (1) step being obtained, be warming up to 70 ℃, under 1300/ point, stir 17 minutes, cool to 33 ℃ and add again other remaining components, continue to grind and stir 15 minutes, to obtain final product.

This low temperature resistant UV photo-cured coating adopts the mode of roller coating to be coated on plank.Sticking power>=secondary, resistance to 75% ethanol>=24 hour, resistance to 5%NaOH>=48 hour, resistance to 5%H ₂sO ₄>=48 hours, the cold cycling that tolerates subzero 40 degree and 40 degree did not ftracture for 10 times, resistance to 15% salt solution>=60 hour, and hardness is 3H, abrasion resistance index turns above 3000.

Claims (2)

1. a low temperature resistant UV photo-cured coating, is characterized in that being made up of the raw material of following weight part: polyurethane acrylate prepolymer 40-45, epoxy acrylate 14-18, Rocryl 410 5-7, sepiolite powder 8-12, linolenic acid 3-5, dioctyl phthalate 4-6, methylethylketone 4-8, benzoin dimethylether 1-2, maleic anhydride 10-14, ammonium polyphosphate 3-6, auxiliary agent 4-5;

Described auxiliary agent is made up of the raw material of following weight part: atlapulgite 2-3, nano tungsten trioxide 1-2, jojoba oil 1-2, methylene-succinic acid 4-6, acetyl peroxide 0.2-0.3, polypropylene adipate (PPA) 0.2-0.3,2-methyl methacrylate 2-3, propylene glycol 6-9, polydimethylsiloxane 5-7, dibutyl ethylene glycol ether 16-20; Preparation method mixes propylene glycol, dibutyl ethylene glycol ether, jojoba oil, under 10000-14000 rev/min of stirring, adds atlapulgite, nano tungsten trioxide; Add methylene-succinic acid, 2-methyl methacrylate, polypropylene adipate (PPA), polydimethylsiloxane again, be heated to 60-80 ℃, at 1300-1500 rev/min of lower stirring reaction 10-20 minute, add acetyl peroxide, stirring reaction 1-2 hour, to obtain final product.

2. the preparation method of low temperature resistant UV photo-cured coating according to claim 1, is characterized in that comprising the following steps:

(1) by sepiolite powder, spray into while stirring vaporific linolenic acid, mix and place 1-2 hour;

(2) mixing of materials polyurethane acrylate prepolymer, epoxy acrylate, Rocryl 410, dioctyl phthalate, methylethylketone, maleic anhydride, ammonium polyphosphate and (1) step being obtained, be warming up to 60-80 ℃, divide lower stirring 15-20 minute at 1200-1400/, cool to 35 ℃ and add again below other remaining components, continue to grind and stir 10-20 minute, to obtain final product.