阅读说明：本技术 一种洒点喷涂材料及其制备方法 (Sprinkling point spraying material and preparation method thereof ) 是由 黎建 于 2020-12-14 设计创作，主要内容包括：本发明涉及喷涂材料技术领域,公开了一种洒点喷涂材料,包括A组分和B组分；所述A组分和B组分的重量比为2:1；所述A组分按重量份计,醇酸树脂35～45份、分散剂0.5～1份、黑色粉8～10份、溶剂5～7份、消泡剂0.1～0.5份、高硬度粉34～45份、气硅2～3份和膨润土1～2份；所述B组分按重量份计,包括TDI三聚体35份、TDI加成物40份、聚氨酯级溶剂24份和脱水剂1份；本发明还公开了该洒点喷涂材料的制备方法；本发明的洒点喷涂材料达到了硬度高、耐刮伤、可施工活化期长且立体感强的效果。(The invention relates to the technical field of spraying materials, and discloses a spot spraying material which comprises a component A and a component B; the weight ratio of the component A to the component B is 2: 1; the component A comprises, by weight, 35-45 parts of alkyd resin, 0.5-1 part of dispersing agent, 8-10 parts of black powder, 5-7 parts of solvent, 0.1-0.5 part of defoaming agent, 34-45 parts of high-hardness powder, 2-3 parts of gas silicon and 1-2 parts of bentonite; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of polyurethane-grade solvent and 1 part of dehydrating agent in parts by weight; the invention also discloses a preparation method of the sprinkling point spraying material; the sprinkling point spraying material of the invention achieves the effects of high hardness, scratch resistance, long construction activation period and strong stereoscopic impression.)

1. The sprinkling point spraying material is characterized by comprising a component A and a component B; the component A comprises alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite; the component B comprises TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent.

2. The spot spray material according to claim 1, wherein the weight ratio of the A component to the B component is 2: 1.

3. A spot spray material according to claim 2, wherein said B component comprises 35 parts by weight of TDI trimer, 40 parts by weight of TDI adduct, 24 parts by weight of polyurethane-grade solvent and 1 part by weight of dehydrating agent.

4. A spot spray material according to claim 3, wherein said polyurethane grade solvent comprises one of xylene and butyl acetate.

5. A spot-spraying material according to claim 3, wherein the component A comprises 35 to 45 parts by weight of alkyd resin, 0.5 to 1 part by weight of dispersant, 8 to 10 parts by weight of black toner, 5 to 7 parts by weight of solvent, 0.1 to 0.5 part by weight of defoaming agent, 34 to 45 parts by weight of high-hardness powder, 2 to 3 parts by weight of silicon dioxide and 1 to 2 parts by weight of bentonite.

6. The aqueous skin-feel wood coating of claim 5, wherein the solvent comprises butyl acetate and ethyl acetate.

7. A method of making a spot spray material according to claim 6, comprising the steps of:

preparation of the component A:

1) weighing the alkyd resin, the dispersing agent, the black powder, the solvent, the defoaming agent, the high-hardness powder, the gas silicon and the bentonite according to the proportion;

2) mixing the alkyd resin and butyl acetate, and dispersing at medium speed until the mixture is uniform to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing at a medium speed until the mixed solution I is uniform to obtain a mixed solution II;

4) adding gas silicon, bentonite and black toner into the mixed solution II, and dispersing at a high speed until the mixture is uniform to obtain a mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing at a medium speed until the mixture is uniform to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing the TDI tripolymer, the TDI addition product, the polyurethane-grade solvent and the dehydrating agent according to the proportion;

8) mixing the polyurethane-grade solvent and the dehydrating agent, uniformly stirring, and standing to obtain a mixed solution V;

9) under a low-speed dispersion state, adding a TDI additive and a TDI trimer into the mixed solution V, and uniformly mixing to obtain the mixed solution;

the preparation of the sprinkling point spraying material comprises the following steps:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

8. The method according to claim 7, wherein in the step 2), the speed of the medium-speed dispersion is 800rpm, and the time is 10 min;

and/or in the step 3), the medium-speed dispersion speed is 800rpm, and the time is 5-10 min;

and/or in the step 4), the speed of the high-speed dispersion is 1200rpm, and the time is 15-20 min;

and/or in the step 5), the medium-speed dispersion speed is 800rpm, and the time is 10-15 min.

9. The method according to claim 7, wherein the standing time in step 8) is 12 hours.

10. The method according to claim 7, wherein in step 9), the speed of the low-speed dispersion is 500 rpm.

Technical Field

The invention relates to the technical field of spraying materials, in particular to a spot spraying material and a preparation method thereof.

Background

The wine-dropping paint is a paint which is coated on the surface of a product and is similar to dripping water beads, the coating can protect the surface of an object and has artistic feeling, and the wine-dropping paint is usually used for coating the outer surfaces of instruments, equipment, metal products and the like. The sprayed paint has beautiful appearance and strong decoration, and can mask the surface defects of shallow mechanical scars, roughness, unevenness and the like of the coated object.

Chinese patent document CN200810142154.9, application date 20080826, entitled: an aqueous woodenware sprinkling paint is disclosed, which mainly comprises the following components in parts by weight: 8-10 parts of water, 2-4 parts of a film forming additive, 0.2-0.4 part of a wetting dispersant, 0.4-0.8 part of a defoaming agent, 50-60 parts of a filler, 10-30 parts of an acrylic emulsion and 1-1.5 parts of a thickening agent; the preparation method of the water-based woodenware wine-dropping paint comprises the following steps: according to the formula amount, 3/5 amount of water is taken and added into a batching pot, and stirring is started at the rotating speed of 500-700 rpm; sequentially adding a film forming additive, a wetting dispersant, a defoaming agent and a thickening agent according to the formula amount, and adding a filler after uniformly stirring: the stirring speed is adjusted to be over 1200rpm by 600 meshes of quartz powder, 1000 meshes of calcium carbonate and 1000 meshes of talcum powder, and the mixture is dispersed at a high speed for over 25min to form uniform paint slurry; grinding the uniformly stirred paint paste until the particle size is less than or equal to 35 mu m; transferring the ground paint paste into another mixing pot, stirring at a low speed until the paint paste is uniform, sequentially adding the acrylic emulsion with the formula amount and the rest water with the formula amount of 2/5, stirring for at least more than 20min, testing the initial viscosity, adding the thickening agent with the formula amount according to the measured initial viscosity, and adjusting the viscosity of the paste to 3500-4500 mPas.

The water-based wine-dropping paint provided by the patent documents has the advantages of natural shape, strong texture, smoothness, quick drying and the like, and is suitable for coating large-scale stage sound boxes and musical instruments. However, no technical proposal about a spot spraying material with high hardness, scratch resistance, long construction activation period and strong stereoscopic impression is proposed yet.

Therefore, a scattering spraying material with high hardness, scratch resistance, long construction activation period and strong stereoscopic impression is needed,

disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a sprinkling point spraying material and a preparation method thereof, so as to at least achieve the effects of high hardness, scratch resistance, long construction activation period and strong stereoscopic impression.

The purpose of the invention is realized by the following technical scheme: a spot spraying material comprises a component A and a component B; the component A comprises alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite; the component B comprises TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent.

Further, the weight ratio of the component A to the component B is 2: 1.

Further, the component B comprises 35 parts of TDI trimer, 40 parts of TDI addition product, 24 parts of polyurethane-grade solvent and 1 part of dehydrating agent in parts by weight.

Further, the TDI trimer is JDOK-50TL of Zhanchen new wood; and/or the TDI adduct is BG-L75 of Bogao; and/or the dehydrating agent is an auxiliary agent F-180 of the samsung paint.

Further, the polyurethane grade solvent includes one of xylene and butyl acetate.

Further, the component A comprises, by weight, 35-45 parts of alkyd resin, 0.5-1 part of dispersing agent, 8-10 parts of black powder, 5-7 parts of solvent, 0.1-0.5 part of defoaming agent, 34-45 parts of high-hardness powder, 2-3 parts of silicon carbide and 1-2 parts of bentonite.

Further, the alkyd resin is JD12-70D coconut oil alkyd resin of Zhanchen new material; and/or the dispersant is EFKA4010 dispersant from EFKA company; and/or the black powder is carbon black M100 of Degussa; and/or the defoaming agent is BYK066N foam breaking polysiloxane; and/or the high-hardness powder is a Yueye VT771 high-hardness filling powder; and/or the gas silicon is M-5 of the Kabot company; and/or the bentonite is hydrophilic 758 bentonite of Huate company of Zhejiang.

Further, the solvent comprises butyl acetate and ethyl acetate.

A method for preparing the sprinkling point spraying material comprises the following steps:

preparation of the component A:

1) weighing the alkyd resin, the dispersing agent, the black powder, the solvent, the defoaming agent, the high-hardness powder, the gas silicon and the bentonite according to the proportion;

2) mixing the alkyd resin and butyl acetate, and dispersing at medium speed until the mixture is uniform to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing at a medium speed until the mixed solution I is uniform to obtain a mixed solution II;

4) adding gas silicon, bentonite and black toner into the mixed solution II, and dispersing at a high speed until the mixture is uniform to obtain a mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing at a medium speed until the mixture is uniform to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing the TDI tripolymer, the TDI addition product, the polyurethane-grade solvent and the dehydrating agent according to the proportion;

8) mixing the polyurethane-grade solvent and the dehydrating agent, uniformly stirring, and standing to obtain a mixed solution V;

9) under a low-speed dispersion state, adding a TDI additive and a TDI trimer into the mixed solution V, and uniformly mixing to obtain the mixed solution;

the preparation of the sprinkling point spraying material comprises the following steps:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Further, in the step 2), the speed of the medium-speed dispersion is 800rpm, and the time is 10 min;

and/or in the step 3), the medium-speed dispersion speed is 800rpm, and the time is 5-10 min;

and/or in the step 4), the speed of the high-speed dispersion is 1200rpm, and the time is 15-20 min;

and/or in the step 5), the medium-speed dispersion speed is 800rpm, and the time is 10-15 min.

Further, in the step 8), the standing time is 12 h.

Further, in step 9), the speed of the low-speed dispersion is 500 rpm.

The main agent with high solid content and activation time of up to 3 hours is formed by alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, air silicon and bentonite in the component A; and then the mixed solution is combined with the component B and reacts fully and quickly, and the TDI tripolymer, the TDI adduct, the polyurethane-grade solvent and the dehydrating agent in the component B are mainly used for participating in the crosslinking reaction of the component A to play a role in curing, so that the effects of high crosslinking density, strong stereoscopic impression and high scratch resistance of the sprinkling point spraying material are achieved. The JD12-70D coconut oil alkyd resin and the VT771 high-hardness filling powder are used as main bodies and are subjected to crosslinking reaction with a curing agent, so that the hardness and scratch resistance can be improved, and the advantages of long activation period, full sprinkling points and strong stereoscopic impression can be realized.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the sprinkling point spraying material, the component A is used for forming a main agent which is high in solid content and has the activation time as long as 3 hours; and then the B component is combined with the B component and reacts fully quickly, and the B component mainly participates in the crosslinking reaction of the A component to play a role in curing, so that the effects of high crosslinking density, strong stereoscopic impression and high scratch resistance of the spot spraying material are achieved.

2. According to the spot spraying material, JD12-70D coconut oil alkyd resin and VT771 high-hardness filling powder are used as main bodies and are subjected to cross-linking reaction with a curing agent, so that the hardness and scratch resistance can be improved, and the advantages of long activation period, full spraying points and strong stereoscopic impression can be realized.

3. The spot spraying material is suitable for audio equipment and the like.

Detailed Description

The technical solutions of the present invention are described in further detail below, but the scope of the present invention is not limited to the following.

In the following examples, the alkyd resin is JD12-70D coconut oil alkyd resin of Zhanchen, the dispersant is EFKA4010 dispersant of EFKA company, the black powder is carbon black M100 of Degussa, the defoamer is BYK066N foam breaking polysiloxane, the high hardness powder is VT771 high hardness filling powder of Yue, the gas silicon is M-5 of Cabot company, and the bentonite is hydrophilic 758 bentonite of Zhejiang Huatt company; TDI trimer is JDOK-50TL of Zhanchen new material, TDI additive is BG-L75 of Bogao, and dehydrating agent is F-180 of samsung paint; both butyl acetate and ethyl acetate were purchased from the metallocene petrochemical company.

Example 1

1. A spot spraying material comprises a component A and a component B.

The component A comprises 41.9 parts of alkyd resin, 0.8 part of dispersant, 9 parts of black powder, 3 parts of butyl acetate, 2 parts of ethyl acetate, 0.3 part of defoaming agent, 40 parts of high-hardness powder, 2 parts of gas silicon and 1 part of bentonite in parts by weight; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of butyl acetate and 1 part of dehydrating agent in parts by weight.

2. A preparation method of a sprinkling point spraying material comprises the following steps:

preparation of component A:

1) weighing alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite according to a ratio;

2) mixing alkyd resin and butyl acetate, and dispersing at the rotating speed of 800rpm for 10min to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing for 5min at the rotating speed of 800rpm to obtain a mixed solution II;

4) adding gas silicon, bentonite and black powder into the mixed solution II, and dispersing for 20min at the rotating speed of 1200rpm to obtain mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing for 10min at the rotating speed of 800rpm to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent according to the proportion;

8) mixing a polyurethane-grade solvent and a dehydrating agent, uniformly stirring, and standing for 12 hours to obtain a mixed solution V;

9) adding a TDI additive and a TDI trimer into the mixed solution V under a low-speed dispersion state with the rotation speed of 500rpm, and dispersing until the mixed solution is uniform to obtain the TDI-trimer-containing mixed solution;

preparing a sprinkling point spraying material:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Example 2

1. A spot spraying material comprises a component A and a component B.

The component A comprises 37.7 parts of alkyd resin, 0.9 part of dispersing agent, 10 parts of black toner, 2 parts of butyl acetate, 3 parts of ethyl acetate, 0.3 part of defoaming agent, 43 parts of high-hardness powder, 2 parts of gas silicon and 1.3 parts of bentonite in parts by weight; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of butyl acetate and 1 part of dehydrating agent in parts by weight.

2. A preparation method of a sprinkling point spraying material comprises the following steps:

preparation of component A:

1) weighing alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite according to a ratio;

2) mixing alkyd resin and butyl acetate, and dispersing at the rotating speed of 800rpm for 10min to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing for 5min at the rotating speed of 800rpm to obtain a mixed solution II;

4) adding gas silicon, bentonite and black powder into the mixed solution II, and dispersing for 20min at the rotating speed of 1200rpm to obtain mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing for 10min at the rotating speed of 800rpm to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent according to the proportion;

8) mixing a polyurethane-grade solvent and a dehydrating agent, uniformly stirring, and standing for 12 hours to obtain a mixed solution V;

9) adding a TDI additive and a TDI trimer into the mixed solution V under a low-speed dispersion state with the rotation speed of 500rpm, and dispersing until the mixed solution is uniform to obtain the TDI-trimer-containing mixed solution;

preparing a sprinkling point spraying material:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Example 3

1. A spot spraying material comprises a component A and a component B.

The component A comprises 35 parts of alkyd resin, 0.5 part of dispersant, 8 parts of black powder, 3 parts of butyl acetate, 2 parts of ethyl acetate, 0.1 part of defoaming agent, 34 parts of high-hardness powder, 2 parts of gas silicon and 1 part of bentonite in parts by weight; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of butyl acetate and 1 part of dehydrating agent in parts by weight.

2. A preparation method of a sprinkling point spraying material comprises the following steps:

preparation of component A:

1) weighing alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite according to a ratio;

2) mixing alkyd resin and butyl acetate, and dispersing at the rotating speed of 800rpm for 10min to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing for 5min at the rotating speed of 800rpm to obtain a mixed solution II;

4) adding gas silicon, bentonite and black powder into the mixed solution II, and dispersing for 20min at the rotating speed of 1200rpm to obtain mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing for 15min at the rotating speed of 800rpm to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent according to the proportion;

8) mixing a polyurethane-grade solvent and a dehydrating agent, uniformly stirring, and standing for 12 hours to obtain a mixed solution V;

9) adding a TDI additive and a TDI trimer into the mixed solution V under a low-speed dispersion state with the rotation speed of 500rpm, and dispersing until the mixed solution is uniform to obtain the TDI-trimer-containing mixed solution;

preparing a sprinkling point spraying material:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Example 4

1. A spot spraying material comprises a component A and a component B.

The component A comprises 45 parts of alkyd resin, 1 part of dispersing agent, 10 parts of black powder, 4 parts of butyl acetate, 3 parts of ethyl acetate, 0.5 part of defoaming agent, 45 parts of high-hardness powder, 3 parts of gas silicon and 2 parts of bentonite in parts by weight; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of butyl acetate and 1 part of dehydrating agent in parts by weight.

2. A preparation method of a sprinkling point spraying material comprises the following steps:

preparation of component A:

1) weighing alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite according to a ratio;

2) mixing alkyd resin and butyl acetate, and dispersing at the rotating speed of 800rpm for 10min to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing for 5min at the rotating speed of 800rpm to obtain a mixed solution II;

4) adding gas silicon, bentonite and black powder into the mixed solution II, and dispersing for 20min at the rotating speed of 1200rpm to obtain mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing for 15min at the rotating speed of 800rpm to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent according to the proportion;

8) mixing a polyurethane-grade solvent and a dehydrating agent, uniformly stirring, and standing for 12 hours to obtain a mixed solution V;

9) adding a TDI additive and a TDI trimer into the mixed solution V under a low-speed dispersion state with the rotation speed of 500rpm, and dispersing until the mixed solution is uniform to obtain the TDI-trimer-containing mixed solution;

preparing a sprinkling point spraying material:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Example 5

1. A spot spraying material comprises a component A and a component B.

The component A comprises 30 parts of alkyd resin, 0.6 part of dispersant, 9 parts of black powder, 3 parts of butyl acetate, 3 parts of ethyl acetate, 0.4 part of defoaming agent, 42 parts of high-hardness powder, 2.5 parts of gas silicon and 1.8 parts of bentonite in parts by weight; the component B comprises 35 parts of TDI tripolymer, 40 parts of TDI addition product, 24 parts of butyl acetate and 1 part of dehydrating agent in parts by weight.

2. A preparation method of a sprinkling point spraying material comprises the following steps:

preparation of component A:

1) weighing alkyd resin, a dispersing agent, black powder, a solvent, a defoaming agent, high-hardness powder, gas silicon and bentonite according to a ratio;

2) mixing alkyd resin and butyl acetate, and dispersing at the rotating speed of 800rpm for 10min to obtain a mixed solution I;

3) adding a defoaming agent and a dispersing agent into the mixed solution I, and dispersing for 5min at the rotating speed of 800rpm to obtain a mixed solution II;

4) adding gas silicon, bentonite and black powder into the mixed solution II, and dispersing for 15min at the rotating speed of 1200rpm to obtain mixed solution III;

5) adding high-hardness powder into the mixed solution III, and dispersing for 15min at the rotating speed of 800rpm to obtain a mixed solution IV;

6) adding ethyl acetate into the mixed solution IV, and uniformly mixing to obtain the mixed solution IV;

preparation of the component B:

7) weighing TDI tripolymer, TDI addition product, polyurethane grade solvent and dehydrating agent according to the proportion;

8) mixing a polyurethane-grade solvent and a dehydrating agent, uniformly stirring, and standing for 12 hours to obtain a mixed solution V;

9) adding a TDI additive and a TDI trimer into the mixed solution V under a low-speed dispersion state with the rotation speed of 500rpm, and dispersing until the mixed solution is uniform to obtain the TDI-trimer-containing mixed solution;

preparing a sprinkling point spraying material:

10) and uniformly mixing the component A and the component B according to the proportion to obtain the sprinkling point spraying material.

Comparative example 1

The sprinkling point spraying material in the embodiment 1 of the invention is compared with the comparative example 1, wherein the sprinkling point spraying material in the comparative example 1 is a market sample which is purchased from Yokoku color paint Mill and has the model of GSD 9611.

Comparative example 2

The sprinkling point spraying material in the embodiment 1 of the invention is compared with the comparative example 2, wherein the comparative example 2 is not added with high-hardness powder, and other conditions such as dosage, preparation method and the like are the same as those in the embodiment 1 of the invention (the sprinkling point spraying material in the comparative example is not added with high-hardness powder, so as to prove that the sprinkling point spraying material has better performance).

Comparative example 3

The material for spray point application in example 1 of the present invention was compared with comparative example 3, wherein the comparative example 3 was not added with TDI adduct, and other conditions such as the amount of TDI adduct and the method of preparation were the same as those in example 1 of the present invention (the material for spray point application in the comparative example, which was not added with TDI adduct, was used to prove that the material for spray point application of the present invention has better properties).

Test effects

1. In order to verify the performance of the sprinkling point spraying material of the invention, the product performances of the sprinkling point spraying materials prepared in examples 1-5 and comparative examples 1-3, such as hardness, adhesive force, wear resistance, construction viscosity, sprinkling point effect and the like, were tested, wherein:

1) hardness: the measurement is carried out according to the regulation of GB/T6739-2006, and the used pencil is a Chinese edition 101 drawing pencil;

2) adhesion force: the cross-grid spacing is 2MM, determined according to the specifications of GB/T9286-1998;

3) wear resistance: the rubber grinding wheel is measured according to the specification of GB/T1768-2006, and the model of the used rubber grinding wheel is CS-10;

4) construction viscosity: according to the construction proportion, the seconds are measured by using a saline field 2# cup at 25 ℃.

The test results are shown in the following table:

as can be seen from the above table, compared with examples 1 to 5, the hardness and wear resistance of comparative examples 1 to 3 were significantly reduced, indicating that the high-hardness powder and TDI adduct have significant effects in improving the hardness and wear resistance; the construction viscosity of the comparative examples 1-2 is obviously increased, which shows that the activation period of the TDI adduct can be obviously prolonged; the spreading effect of the comparative examples 2-3 is obviously poor, which shows that the fullness and the stereoscopic impression can be ensured by adopting the collocation of the resin and the powder in the formula.

In conclusion, the sprinkling point spraying material and the preparation method thereof achieve the effects of high hardness, scratch resistance, long construction activation period and strong stereoscopic impression.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.