CN105419599A - High-solid-content aliphatic acrylic polyurethane paint and preparation method thereof - Google Patents

Abstract

The invention discloses a high-solid-content aliphatic acrylic polyurethane paint and a preparation method thereof. The high-solid-content aliphatic acrylic polyurethane paint comprises a component A, a component B and a component C, wherein the component A is prepared in the following steps: (1) preparing a 20% polyamide wax pulp aid; (2) preparing grinding color paste from the following components: high-solid low-viscosity hydroxy acrylic resin, a wetting agent, a dispersing agent, triethoxy ethyl propionate, titanium dioxide, spherical glass beads, carbon black, 154L yellow, bentonite and dimethylbenzene; (3) paint mixing: adding an ultraviolet light absorber, the 20% polyamide wax pulp aid, the flatting agent, a defoaming agent and n-butyl acetate, so as to obtain the component A; the component B is prepared from aliphatic isocyanate tripolymer; the component C is prepared by uniformly mixing n-butyl acetate, PMA and S-100. The high-solid-content aliphatic acrylic polyurethane paint is environmentally friendly, the energy is saved, and the emission of poisonous and harmful gas is greatly reduced, so that the energy saving and the consumption reduction are achieved; the coating period is short, and the efficiency is high; a once coated dry membrane is high in thickness, the coating frequency is reduced, the coating efficiency is improved, the labor intensity is alleviated, and a film is strong in impact resistance.

Description

A kind of high-solid level aliphatic acrylic polyurethane coating and preparation method

Technical field

The present invention relates to a kind of organic polymer synthetic materials technical field, be specially one and be applicable to steel construction and concrete protection high-solid level aliphatic acrylic polyurethane coating and preparation method thereof under various atmospheric environment.

Background technology

The discharge of the organic volatile (VOC) in coating is coating environmental pollution main source, the whole world has the solvent of millions of tons to be discharged into from coating in air every year according to statistics, these organic volatile compounds not only destroy the air ecotope that the mankind depend on for existence, but also damage the health of mankind itself.Environmentally friendly coatings becomes one of industry prior development direction, and it mainly comprises high solid coating, water-borne coatings, powder coating, UV coating etc., and high solid coating is wherein the most potential kind.In its production process, solvent usage quantity reduces greatly, and without the need to special producing processing unit, reduces the pollution in coatings enterprises production process, with also reducing manufacturing cost.The energy consumed during the solidification of high-solid level aliphatic acrylic polyurethane coating is very low, can normal temperature or low-temperature curing film forming.Integrated environment protection and film performance, present stage uses high solid coating to have advantageous advantage.As high-solid level acroleic acid polyurethane coating, it had both had excellent coating property, can meet again environmental requirement and develop into a kind of low contamination coating kind, therefore had application of paints market and good development prospect widely.It is high solid coating that general provision construction solid divides at 61-95%.In recent years about high-solid level vinylformic acid gather ammonia coating development and application patent and document a lot, as CN103396729A discloses a kind of low viscosity high-solid level acroleic acid polyurethane coating and preparation method thereof, Hui Xue continent degree Master's thesis " development of high-solid level acroleic acid polyurethane coating ", the VOC quantity discharged of all not mentioned coating under working viscosity.On the other hand under working viscosity, film sag resistance, dry film only accomplishes 50um not sagging, and these 2 is just in time high-solid level acroleic acid polyurethane coating Problems existing in the market: (1) high solid coating exists system high viscosity, a large amount of solvent must be added during use, reduce construction solid content, virtually increase unit surface and coat the discharge of VOC, exceed the emission standard that coating process specifies.(2) application property is poor, and one-pass film-forming is relatively thick, causes sagging serious, needs multiple tracks to spray and just can reach design thickness.

Summary of the invention

The object of the invention is the hydroxyl acrylic resin of preferred high-solid lower-viscosity, adopt raw materials such as separating flocculation dispersion agent, sag prevention auxiliary agent, high-weatherability pigment, spherical glass beads, solvent and reactive thinner, with the Paint preparation technology of advanced person, obtain high-solid level aliphatic acrylic polyurethane coating component A, the aliphatic isocyanates solidifying agent B component of itself and low-viscosity, high reaction activity, constitutes two component high-solid level acroleic acid polyurethane coating.Low in price compared with same kind of products at abroad, application property is good.The invention solves that the viscosity that high-solid level aliphatic acrylic polyurethane coating exists at present is high, construction solid divides low, the technical problems such as easy sagging, bad mechanical property of constructing.

The object of the invention is to be realized by following technical proposals.

A kind of high-solid level aliphatic acrylic polyurethane coating, coating comprise A, B, C tri-component by weight A: B: C=10: 1.5:1.5 ~ 1 the raw material of ratio mixing:

Component A:

Component B:

Aliphatic isocyanates tripolymer 100 parts;

Component C:

N-BUTYL ACETATE 50 ~ 70 parts;

PMA30 ~ 40 part;

S-10010 ~ 30 part.

Further, described high solid low viscosity Hydroxylated acrylic resin is French Acker agate company limited at least one in the 73006D of 854BA80 or Changxing, Taiwan Chemical Co., Ltd..This resin solid content high (80%), viscosity low (6000-7500mpa.s/25 DEG C), the molecular weight distribution of resin is narrow, and hydroxyl value is low, and hydroxyl distribution is regular.

Further, described dispersion agent is at least one in the BYK110 of German Bi Ke chemical company or the Disponer9250 of this company limited of hamming of the U.S..

Further, described wetting agent is at least one in the BYKP104S of German Bi Ke chemical company or BASF AG EFKA5065.

Further, described UV light absorber is BASF 292 photostabilizers or Taiwan is at least one in photochemistry Eversorb85 photostabilizer forever.

Further, described spherical glass beads is at least one in the spherical glass beads S38HS of Minnesota Mining and Manufacturing Company or Zhengzhou Sheng Laite cenosphere company limited F200.The low oil-absorption(number) of spherical glass beads, ductility is good, during by external impacts, has good shock absorption.

Further, described flow agent is at least one in the BYK390 of German Bi Ke chemical company or the Disponer495 of this company limited of hamming of the U.S..

Further, described defoamer is at least one in the BYK054 of German Bi Ke chemical company or the Tech-431 of Shanghai Tag company.

Further, described aliphatic isocyanates tripolymer is at least one in the HT-100 of Yantai Wan Hua company or the TPA-100 of Asahi Chemical Industry.This solidifying agent is 100% solid content, and viscosity is low.

Correspondingly, the present invention gives a kind of high-solid level aliphatic acrylic polyurethane coating preparation method, comprises the steps:

(1) preparation of component A:

1) preparation of 20% polyamide wax auxiliary agent: be dispersed to transparent shape pre-gelled at 1500r/min after the polyamide wax of 20 parts mixes with 50 parts of high solid low viscosity Hydroxylated acrylic resins by parts by weight, detect fineness to below 20um, 30 parts of N-BUTYL ACETATEs are added under low speed, stir, stand-by;

Wherein, polyamide wax adopts at least one in the PA3X-20 polyamide wax of French Ke Lai Valleylad Inc. or Japanese nanmu company JSP-1068 polyamide wax.This kind sag prevention is good, not thickening.

2) preparation of master grind: the Hydroxylated acrylic resin of 50-70 part is metered to tank, under 500r/min stirs, add 0.5-1.0 wetting agent, 0.8-1.2 part dispersion agent, the triethoxy ethyl propionate of 1-3 part, 25-30 part Rutile type Titanium Dioxide, the spherical glass beads of 10-15 part, 0.2-0.4 part carbon black, 0.2-1.4 part 154L Huang, 0.3-0.8 part wilkinite, 1-4 part dimethylbenzene successively, under 2000r/min stirs, disperse 10-15min; Temperature reaches 20 μm lower than 60 DEG C through grinding control fineness;

3) paint: master grind enters tank, 0.2 ~ 1 part of UV light absorber, 10 ~ 20 part of 20% polyamide wax auxiliary agent, 0.3 ~ 1 part of flow agent, 0.1 ~ 0.6 part of defoamer, 1-3 part N-BUTYL ACETATE adjustment viscosity is added successively under 1500r/min stirs, stir 10-15min, control viscosity in 95-105KU stormer viscosity, filter, pack, obtain component A;

(2) preparation of component B:

By HT-100 aliphatic isocyanates tripolymer, filter, packing, obtains B component;

(3) preparation of component C:

By weight ratio by N-BUTYL ACETATE: PMA: S-100=(50 ~ 70): (30 ~ 40): (10 ~ 30) mix, stir 5min at 300r/min, packaging, obtains component C;

3) mixing of component A, component B and component C:

Used time is component A by weight ratio: component B: component C=10: 1.5:1.5 ~ 1, stirs, slaking 15min.

Coating of the present invention tool compared with like product on existing market has the following advantages:

(1) low VOC content.High solid coating, effectively reduces the use of solvent in coating material production.

(2) under working viscosity, solid content is high.Have employed spherical glass beads, improve construction solid and divide, reduce the discharge of VOC during construction.

(3) environmental protection, save energy.Use 80% solid hydroxy acryl acid resin, product solvent load in production and coating process few, construction solid divides high, construction VOC discharge for below 340g/L (far below national limit standard 420g/L), greatly reduce toxic and harmful discharge, thus realize energy-saving and cost-reducing.And by reducing the use of solvent, reach energy-saving and cost-reducing effect.

(4) the application cycle is short, and efficiency is high.One time application build reaches 130um, and coating thickness of once constructing exceeds 2-3 doubly than general coating, reduces application number of channels, improves coating efficiency, reduce labour intensity.

(5) use spherical glass beads, substantially increase the shock resistance of film, coating thickness is when 80-90um, and shock strength square impact reaches 50kgcm.

High-solid level aliphatic acrylic polyurethane coating of the present invention belongs to high solid low viscosity product, construction solid divides high, in unit surface, VOC discharge is few, have good workability, once spray wet film reach 200-250um not sagging, build at 130-140um, primary coating film forming, greatly shorten the application cycle, increase work efficiency.When reaching working viscosity, VOC discharge for 340g/L (far below national limit standard 420g/L), has ornamental, the outstanding advantages such as mechanical property is excellent, weathering resistance is high well, various big machinery, bridge is widely used.

Embodiment

The following stated be the preferred embodiment of the present invention, what the present invention protected is not limited to following preferred implementation, and described case study on implementation is explanation of the invention instead of restriction.Point out, for a person skilled in the art on the basis that these innovation and creation are conceived, the some distortion made and improvement, all belong to protection scope of the present invention simultaneously.

Embodiment 1

Component A:

1) preparation of 20% polyamide wax auxiliary agent: PA3X-20 polyamide wax and 50 parts of French Arkema of by parts by weight being 20 parts of French Ke Lai Valleylad Inc. after the mixing of 854BA80 high solid low viscosity Hydroxylated acrylic resin, be dispersed to transparent shape pre-gelled at 1500r/min, detect fineness to below 20um, add 30 parts of N-BUTYL ACETATEs under low speed dispersion, stir, stand-by.

2) by weight ratio, by 70 parts 854BA80 high solid low viscosity Hydroxylated acrylic resin is metered to tank, 0.8 Fen Bike chemical company BYK110 is added under the speed of 500r/min, the BYKP104S of 0.5 Fen Bike chemical company, the triethoxy ethyl propionate of 1 part, 25 parts of Rutile type Titanium Dioxides, 10 parts of spherical glass beads, 0.2 part of carbon black, 0.2 part of 154L Huang, 0.5 part of wilkinite, 2 parts of dimethylbenzene, after stirring, rotating speed is transferred to 2000r/min and disperses 10-15min, proceed to lower road grinding step, first pass goes over shredder fast, second time, control fineness 3rd time, control grinding temperature lower than 60 DEG C, until fineness reaches 20um.Proceed to next procedure---paint.

3) paint: master grind is metered to tank, adds 0.2 part of BASF successively under 1500r/min stirs the BYK054 defoamer of 292 photostabilizers, 10 part of 20% polyamide wax auxiliary agent, the BYK390 flow agent of 0.3 part of German Bi Ke chemical company, 0.3 part of German Bi Ke chemical company, 3 parts of N-BUTYL ACETATE adjustment viscosity, stir 15min, control viscosity at 95-105KU Stormer viscosity.Filter, packaging.Obtain component A.

Component B:

By aliphatic isocyanates tripolymer HT-100 tripolymer, filter, packing, obtains B component.

(3) component C:

By weight ratio by N-BUTYL ACETATE: PMA: S-100=60:30:10 mixing, stir 5min at 300r/min, packaging, obtains component C.

Used time is component A by weight ratio: component B: component C=10: 1.5:1, stirs, and slaking 15min can use.Can Airless spraying, roller coat, brushing multimode construction.

A kind of high-solid level aliphatic acrylic polyurethane coating product mechanical property workability of the present invention and VOC content test procedure as follows:

Experimental installation and material:

Experimental installation: salt-fog resistant test machine (upper Hailin plant and instrument company limited frequently); The forced dry blasting machine of GY-2 type (Beijing Chang Kong sand-blast device company limited); Adherometer (Yi Gao company of Britain elcometer); Sagging instrument (QAG type colored paint flow tester, Tianjin Yonglida Material Testing Machine Co., Ltd.).

The steel plate of base material: 150 × 100 × 2mm

Surface treatment: ISO8501 evaluates.

Test macro

Prepared by test sample plate: steel plate is after sandblasting, be coated with one deck epoxy intermediate coat (Shanxi Baotashan Paint Co., Ltd.), build 140-150um, 24 hours, interval. spray product of the present invention, dry film is between 90-100um, maintenance 7 days under normal temperature, for carrying out resistance to artificial accelerated aging and salt fog resistance test.

High-solid level aliphatic acrylic polyurethane coating (light gray) main performance index test result is as following table 1:

Table 1, the VOCs of high-solid level aliphatic acrylic polyurethane coating, workability and Corrosion Protection test result.

Embodiment 2

Component A:

1) preparation of 20% polyamide wax auxiliary agent: be dispersed to transparent shape pre-gelled at 1500r/min after the JSP-1068 polyamide wax of 20 parts of Japanese nanmu companies mixes with 73006D (80%) the high solid low viscosity Hydroxylated acrylic resin of 50 parts of Taiwan Changxing Chemical Co., Ltd. by parts by weight, detect fineness to below 20um, 30 parts of N-BUTYL ACETATEs are added under low speed, stir, stand-by.

2) by weight ratio, 50 parts of 73006D (80%) high solid low viscosity Hydroxylated acrylic resins are metered to tank, the Disponer9250 of 1.2 parts of these company limiteds of hamming of the U.S. is added under the speed of 500r/min, 0.5 part of BASF AG EFKA5065, the triethoxy ethyl propionate of 2 parts, 28 parts of Rutile type Titanium Dioxides, 15 parts of spherical glass beads, 0.3 part of carbon black, 0.8 part of 154L Huang, 0.3 part of wilkinite, 4 parts of dimethylbenzene, after stirring, rotating speed is transferred to 2000r/min and disperses 10-15min, proceed to lower road grinding step, first pass goes over shredder fast, second time, control fineness 3rd time, control grinding temperature lower than 60 DEG C, until fineness reaches 20um.Proceed to next procedure---paint.

3) paint: master grind is metered to tank, Tech-431 defoamer, 1 part of N-BUTYL ACETATE adjustment viscosity of 1 part of Taiwan photochemistry Eversorb85 photostabilizer, 20 part of 20% polyamide wax auxiliary agent, the Disponer495 flow agent of 0.6 part of this company limited of hamming of the U.S., 0.6 part of Shanghai Tag company is forever added successively under 1500r/min stirs, stir 10min, control viscosity in 95-105KU stormer viscosity.Filter, packaging.Obtain component A.

Component B:

By Asahi Chemical Industry aliphatic isocyanates tripolymer TPA-100 tripolymer, filter, packing, obtains B component.

(3) component C:

By weight ratio by N-BUTYL ACETATE: PMA: S-100=70:30:20 mixing, stir 5min at 300r/min, packaging, obtains component C.

Used time is component A by weight ratio: component B: component C=10: 1.5:1.5, stirs, and slaking 15min can use.Can Airless spraying, roller coat, brushing multimode construction.

High-solid level aliphatic acrylic polyurethane coating product mechanical property workability of the present invention and VOC content test procedure as follows:

Experimental installation and material:

Experimental installation: salt-fog resistant test machine (upper Hailin plant and instrument company limited frequently); The forced dry blasting machine of GY-2 type (Beijing Chang Kong sand-blast device company limited); Adherometer (Yi Gao company of Britain elcometer); Sagging instrument (QAG type colored paint flow tester, Tianjin Yonglida Material Testing Machine Co., Ltd.).

The steel plate of base material: 150 × 100 × 2mm

Surface treatment: ISO8501 evaluates.

Test macro

Prepared by test sample plate: steel plate is after sandblasting, be coated with one deck epoxy intermediate coat (Shanxi Baotashan Paint Co., Ltd.), build 140-150um, 24 hours, interval. spray product of the present invention, dry film is between 90-100um, maintenance 7 days under normal temperature, for carrying out resistance to artificial accelerated aging and salt fog resistance test.

High-solid level aliphatic acrylic polyurethane coating (light gray) main performance index test result is as following table 1:

Table 1, the VOCs of high-solid level aliphatic acrylic polyurethane coating, workability and Corrosion Protection test result.

Embodiment 3

Component A:

1) preparation of 20% polyamide wax auxiliary agent: be dispersed to transparent shape pre-gelled at 1500r/min after the JSP-1068 polyamide wax of 20 parts of Japanese nanmu companies mixes with 73006D (80%) the high solid low viscosity Hydroxylated acrylic resin of 50 parts of Taiwan Changxing Chemical Co., Ltd. by parts by weight, detect fineness to below 20um, 30 parts of N-BUTYL ACETATEs are added under low speed, stir, stand-by.

2) by weight ratio, 60 parts of 73006D (80%) high solid low viscosity Hydroxylated acrylic resins are metered to tank, the Disponer9250 of 1.0 parts of these company limiteds of hamming of the U.S. is added under the speed of 500r/min, 1.0 parts of BASF AG EFKA5065, the triethoxy ethyl propionate of 3 parts, 30 parts of Rutile type Titanium Dioxides, 12 parts of spherical glass beads, 0.4 part of carbon black, 1.4 parts of 154L Huangs, 0.8 part of wilkinite, 1 part of dimethylbenzene, after stirring, rotating speed is transferred to 2000r/min and disperses 10-15min, proceed to lower road grinding step, first pass goes over shredder fast, second time, control fineness 3rd time, control grinding temperature lower than 60 DEG C, until fineness reaches 20um.Proceed to next procedure---paint.

3) paint: master grind is metered to tank, Tech-431 defoamer, 2 parts of N-BUTYL ACETATEs adjustment viscosity of 0.8 part of Taiwan photochemistry Eversorb85 photostabilizer, 15 part of 20% polyamide wax auxiliary agent, the Disponer495 flow agent of 1 part of this company limited of hamming of the U.S., 0.1 part of Shanghai Tag company are forever added successively under 1500r/min stirs, stir 15min, control viscosity in 95-105KU stormer viscosity.Filter, packaging.Obtain component A.

Component B:

By Asahi Chemical Industry aliphatic isocyanates tripolymer TPA-100 tripolymer, filter, packing, obtains B component.

(3) component C:

By weight ratio by N-BUTYL ACETATE: PMA: S-100=50:40:10 mixing, stir 5min at 300r/min, packaging, obtains component C.

Used time is component A by weight ratio: component B: component C=10: 1.5:1.5, stirs, and slaking 15min can use.Can Airless spraying, roller coat, brushing multimode construction.

High-solid level aliphatic acrylic polyurethane coating product mechanical property workability of the present invention and VOC content test procedure as follows:

Experimental installation and material:

Experimental installation: salt-fog resistant test machine (upper Hailin plant and instrument company limited frequently); The forced dry blasting machine of GY-2 type (Beijing Chang Kong sand-blast device company limited); Adherometer (Yi Gao company of Britain elcometer); Sagging instrument (QAG type colored paint flow tester, Tianjin Yonglida Material Testing Machine Co., Ltd.).

The steel plate of base material: 150 × 100 × 2mm

Surface treatment: ISO8501 evaluates.

Test macro

Prepared by test sample plate: steel plate is after sandblasting, be coated with one deck epoxy intermediate coat (Shanxi Baotashan Paint Co., Ltd.), build 140-150um, 24 hours, interval. spray product of the present invention, dry film is between 90-100um, maintenance 7 days under normal temperature, for carrying out resistance to artificial accelerated aging and salt fog resistance test.

High-solid level aliphatic acrylic polyurethane coating (light gray) main performance index test result is as following table 1:

Table 1, the VOCs of high-solid level aliphatic acrylic polyurethane coating, workability and Corrosion Protection test result.

Result:

1. product of the present invention construction solid divides and reaches 64.5%, and similar-type products construction solid divides and only has 40%, exceeds 24.5%.

2. product application property of the present invention is good, and one-pass film-forming build reaches 140um, not sagging.Similar-type products dry film, can only accomplish 80um.Reduce application number of channels, reduce labour intensity, shorten the application cycle.

3. the VOC that constructs is 340g/L, and (far below national limit standard 420g/L) greatly reduces toxic and harmful discharge, in heavy antisepsis product scope, belong to environmentfriendly products.

4. good mechanical property, shock-resistance.

Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.

Claims (10)

1. a high-solid level aliphatic acrylic polyurethane coating, is characterized in that, coating comprise A, B, C tri-component by weight A: B: C=10: 1.5:1.5 ~ 1 ratio mixing raw material:

Component A:

Component B:

Aliphatic isocyanates tripolymer 100 parts;

Component C:

N-BUTYL ACETATE 50 ~ 70 parts;

PMA30 ~ 40 part;

S-10010 ~ 30 part.

2. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described high solid low viscosity Hydroxylated acrylic resin is French Acker agate company limited or at least one in the 73006D of Changxing, Taiwan Chemical Co., Ltd..

3. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described dispersion agent is at least one in the BYK110 of German Bi Ke chemical company or the Disponer9250 of this company limited of hamming of the U.S..

4. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described wetting agent is at least one in the BYKP104S of German Bi Ke chemical company or BASF AG EFKA5065.

5. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, it is characterized in that, described UV light absorber is BASF photostabilizer or Taiwan is at least one in photochemistry Eversorb85 photostabilizer forever.

6. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described spherical glass beads is at least one in the spherical glass beads S38HS of Minnesota Mining and Manufacturing Company or Zhengzhou Sheng Laite cenosphere company limited F200.

7. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described flow agent is at least one in the BYK390 of German Bi Ke chemical company or the Disponer495 of this company limited of hamming of the U.S..

8. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described defoamer is at least one in the BYK054 of German Bi Ke chemical company or the Tech-431 of Shanghai Tag company.

9. a kind of high-solid level aliphatic acrylic polyurethane coating as claimed in claim 1, is characterized in that, described aliphatic isocyanates tripolymer is at least one in the HT-100 of Yantai Wan Hua company or the TPA-100 of Asahi Chemical Industry.

10. a high-solid level aliphatic acrylic polyurethane coating preparation method, is characterized in that, comprise the steps:

(1) preparation of component A:

1) preparation of 20% polyamide wax auxiliary agent: be dispersed to transparent shape pre-gelled at 1500r/min after the polyamide wax of 20 parts mixes with 50 parts of high solid low viscosity Hydroxylated acrylic resins by parts by weight, detect fineness to below 20um, 30 parts of N-BUTYL ACETATEs are added under low speed, stir, stand-by;

2) preparation of master grind: the Hydroxylated acrylic resin of 50-70 part is metered to tank, under 500r/min stirs, add 0.5-1.0 wetting agent, 0.8-1.2 part dispersion agent, the triethoxy ethyl propionate of 1-3 part, 25-30 part Rutile type Titanium Dioxide, the spherical glass beads of 10-15 part, 0.2-0.4 part carbon black, 0.2-1.4 part 154L Huang, 0.3-0.8 part wilkinite, 1-4 part dimethylbenzene successively, under 2000r/min stirs, disperse 10-15min; Temperature reaches 20 μm lower than 60 DEG C through grinding control fineness;

3) paint: master grind enters tank, 0.2 ~ 1 part of UV light absorber, 10 ~ 20 part of 20% polyamide wax auxiliary agent, 0.3 ~ 1 part of flow agent, 0.1 ~ 0.6 part of defoamer, 1-3 part N-BUTYL ACETATE adjustment viscosity is added successively under 1500r/min stirs, stir 10-15min, control viscosity in 95-105KU stormer viscosity, filter, pack, obtain component A;

(2) preparation of component B:

By HT-100 aliphatic isocyanates tripolymer, filter, packing, obtains B component;

(3) preparation of component C:

By weight ratio by N-BUTYL ACETATE: PMA: S-100=(50 ~ 70): (30 ~ 40): (10 ~ 30) mix, stir 5min at 300r/min, packaging, obtains component C;

3) mixing of component A, component B and component C:

Used time is component A by weight ratio: component B: component C=10: 1.5:1.5 ~ 1, stirs, slaking 15min.