CN113666670A - Anti-adhesion rock slice and preparation method thereof - Google Patents

Abstract

The invention discloses an anti-adhesion rock slice which comprises the following components in percentage by weight: 30-50 parts of water-based acrylic resin, 5-20 parts of chitin, 0.1-2 parts of mixed acid, 0.05-1 part of accelerator, 15-45 parts of filler and water which are complemented to 100 parts; the mixed acid comprises boric acid and at least one organic acid, the molar ratio of the boric acid to the organic acid is 1: 10-10: 1, the deacetylation degree of the chitin is lower than 50%, and the water-based acrylate is one or more selected from hydroxyethyl acrylate, hydroxypropyl acrylate and glycidyl methacrylate. The rock slice can be mixed, stirred and dispersed in natural colored sand or sintered colored sand, can be prevented from being ground, can keep stable quality after being stored at high temperature and high humidity, does not have obvious change in flexibility, does not adhere, and has excellent anti-adhesion performance.

Description

Anti-adhesion rock slice and preparation method thereof

Technical Field

The invention relates to the field of coatings, in particular to an anti-adhesion rock slice.

Background

The stone-like paint is a kind of building paint which is made up by using colour materials of natural colour sand, etc. and matching with special resin and high-grade raw material, and can be sprayed on stone sample plate to obtain colorful and bright coating surface. In order to ensure the real effect and quality of the spraying, a large amount of real stone paint is often required to be sprayed on a stone sample plate, and the spraying amount is 2-10 kilograms per square meter generally. Therefore, the wall can bear overweight, building fatigue is accelerated, wall cracking and deformation are slowly caused to fall off, attractiveness is affected, and the safety of downstairs pedestrians is threatened due to the falling of high-rise real stone paint.

Chitin is a linear polysaccharide formed by connecting N-acetyl-D-glucosamine through beta (1-4) glycoside bonds, and is called Chitin in English. The molecular formula of chitin is (C8H13NO5) n, and Chitosan (Chitosan) is obtained by deacetylation. Their structures are similar to cellulose and differ mainly in the substituents at the C-2 position. A large number of hydrogen bonds exist in molecular structures of chitin and chitosan, and the hydrogen bonds are beneficial to the formation of crystals, but seriously restrict the solubility of the chitin and the chitosan.

Therefore, there is a need in the art to reduce the amount of real stone paint sprayed per unit area without affecting its aesthetic quality, and prior art generally uses rock chips. The rock slice is a product formed by the coating, but is different from the film formed by the common coating, on one hand, the rock slice is not required to be uniform in coating and have no holes as the common coating, the coating of the rock slice can be non-uniform and can generate certain holes, and on the other hand, the rock slice is generally mixed and stirred with natural colored sand or sintered colored sand, the stirring time is generally 20 minutes to 1 hour, and the rock slice can be timely dispersed and is not ground; at present, the process of manufacturing rock slices in the field is developing towards the preparation of thinner rock slices, but the rock slices are used in engineering, generally mixed and stirred with natural colored sand or sintered colored sand, the stirring time is generally 20 minutes to 1 hour, the aim is to disperse the rock slices in the real stone paint, but the water-based acrylic resin selected for the rock slices is generally thermosetting resin, and the rock slices are gradually hardened and formed after being heated, have high heat resistance and are not easy to deform under pressure, but have the defects of poor mechanical property and poor flexibility when the rock slices are thinner, so as to solve the technical problem, therefore, the prior art, such as Chinese patent CN105907213A and Chinese patent CN105505221A, adopt the rock slice raw materials to be uniformly mixed, roll coated, not heated and cured, and directly subjected to post-drying and forming, so that the water-based acrylic resin in the formed rock slices is only partially cured, and as more acrylic resin is not cured and formed, on one hand, the rock slices are easy to absorb water, the rock slices are not easy to scatter in the stone-like paint coating because the acrylic resin has certain viscosity after absorbing water, so that the rock slices are not easy to scatter in the stone-like paint coating after being thermocured and are crisp and stirring-resistant, the higher the thermocuring degree is, the more crisp the rock slices are and are easy to adhere without thermocuring, the lower the thermocuring degree is, the more difficult the rock slices are to scatter, and the longer the stirring time is, the rock slices are grinded by natural colored sand or sintered colored sand, so that the qualified rock slices are limited in a very limited range.

Accordingly, there is a need for a rock laminate that is resistant to blocking by those skilled in the art.

Disclosure of Invention

The invention aims to provide an anti-adhesion rock slice, which can be mixed, stirred and dispersed in natural colored sand or sintered colored sand, and can keep stable quality after being stored at high temperature and high humidity; the rock slice is easy to disperse during stirring, can prevent from being ground, does not have obvious change in flexibility after being stored at high temperature and high humidity, does not adhere, and has excellent anti-adhesion performance.

The object of an aspect of the invention is achieved by:

an anti-adhesion rock slice comprises the following components in percentage by weight: 30-50 parts of water-based acrylic resin, 5-20 parts of chitin, 0.1-2 parts of mixed acid, 0.05-1 part of accelerator, 15-45 parts of filler and water which are complemented to 100 parts;

wherein the mixed acid comprises boric acid and at least one organic acid, the molar ratio of the boric acid to the organic acid is 1: 10-10: 1,

the deacetylation degree of the chitin is lower than 50 percent,

the water-based acrylate is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate and glycidyl methacrylate.

The filler is an inorganic filler commonly used in the field and is selected from one or a combination of kaolin, bentonite, calcium carbonate and titanium dioxide, and the filler has the functions of increasing the granular layering sense of the rock slice and presenting stone-like grains on one hand, and has the functions of serving as a framework on the other hand, increasing the flexibility of the rock slice and reducing the cost at the same time. Preferably, the filler is a combination of light calcium carbonate and precipitated silica, and more preferably, the particle size of the filler is 300-1000 meshes.

Preferably, the organic acid is selected from one or more of salicylic acid, succinic acid, glutaric acid, phthalic acid, iminodiacetic acid, pyromellitic acid, butanetetracarboxylic acid.

Preferably, the accelerator is one or more of cobalt, manganese metal soaps, thiols, tertiary amines, aldehyde-amine condensates, vanadium accelerators and polyamines.

Preferably, the composition of the rock laminate further comprises an initiator, and the initiator is a peroxide.

Further, the weight ratio of the accelerator to the initiator is 1: 1-10.

Preferably, other conventional optional auxiliary agents are also included, including: 1 to 5 portions of film forming additive, 0.5 to 2.0 portions of flatting agent, 0.5 to 5 portions of dispersant, 0.1 to 0.5 portion of defoaming agent, 0.1 to 0.5 portion of water-based thickener and 0.1 to 1.0 portion of color paste.

The anti-adhesion rock slice raw material formula also comprises other conventional optional auxiliary agents, including: 1 to 5 portions of film forming additive, 0.5 to 5.0 portions of flatting agent, 0.5 to 5 portions of dispersant, 0.1 to 0.5 portion of defoaming agent, 0.1 to 0.5 portion of water-based thickener and 0.1 to 1.0 portion of color paste. These adjuvants are the raw ingredients conventionally added in the art to obtain rock chips, each having a unique function and effect, and the skilled person can select the corresponding raw ingredients according to the specific situation. Those skilled in the art may select conventional commercially available film-forming aids according to actual needs, and examples of the film-forming aids include, but are not limited to, decaglycol ester, ethylene glycol monoethyl ether, monoisobutyrate, propylene glycol monobutyl ether, and the like. Examples of the leveling agent include, but are not limited to, silicone leveling agents, fluorocarbon leveling agents, and vinyl acetate leveling agents. The dispersant may be exemplified by, but not limited to, carboxylic acid salt type anionic surfactant or sulfonate type anionic surfactant or sulfate type anionic surfactant or phosphate type anionic surfactant. Defoaming agents may be exemplified by, and not limited to, GPE type defoaming agents, GPES type defoaming agents, polydimethylsiloxanes, ethylene glycol siloxanes, or polyether modified silicone defoaming agents. Aqueous thickeners include polyacrylic acid based compounds, such as PTF aqueous thickeners or special hand finishes; the color paste is water-based paint color paste. Optionally 0.1-1.0 part of processing aid, 0.1-0.5 part of antioxidant, 0.1-0.5 part of ultraviolet absorber and 0.1-0.5 part of antistatic agent.

The object of a further aspect of the invention is achieved by:

a method of making a rock laminate resistant to adhesion, said rock laminate, and said method of making a rock laminate, comprising the steps of:

(1) mixing chitin, water and mixed acid in proportion, stirring for dissolving, adding the rest components of the rock slice in proportion, stirring for mixing, dispersing to form slurry, pumping the slurry into a reaction kettle for polymerization reaction, wherein the polymerization reaction temperature is controlled to be 40-90 ℃, and the polymerization reaction time is controlled to be 30-150 minutes;

(2) after the slurry is subjected to polymerization reaction, pumping out the slurry from the reaction kettle to form roller coating;

(3) and coating the slurry on a carrying belt by the roller coating through a roller coating process, and then performing drying treatment to obtain the rock slice after drying.

Compared with the existing rock slice, the rock slice provided by the invention has the following outstanding advantages:

the rock slice can be mixed, stirred and dispersed in natural colored sand or sintered colored sand, can be prevented from being ground, can keep stable quality after being stored at high temperature and high humidity, does not have obvious change in flexibility, does not adhere, and has excellent anti-adhesion performance.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.

The present invention is illustrated by way of example and not by way of limitation. It should be noted that references to "an" or "one" embodiment in this disclosure are not necessarily to the same embodiment, but to at least one.

Various aspects of the invention are described below. It will be apparent, however, to one skilled in the art that the present invention may be practiced according to only some or all aspects of the present invention. For purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without specific details. In other instances, well-known features are omitted or simplified in order not to obscure the present invention.

Various operations will be described as multiple discrete steps in turn, and in a manner that is most helpful in understanding the present invention; however, the description in order should not be construed as to imply that these operations are necessarily order dependent.

Various embodiments will be described in terms of typical classes of reactants. It will be apparent to those skilled in the art that the present invention may be practiced using any number of different types of reactants, not just those provided herein for purposes of illustration. Furthermore, it will also be apparent that the invention is not limited to any particular hybrid example.

The chitin selected in the specific embodiment has an acetyl degree of 95%; the chitin with the acetyl degree of 95 percent with different deacetylation degrees is prepared in a laboratory by a deacetylation degree method, and the deacetylation degree is measured by a potentiometric titration method.

The invention is further illustrated by the following specific examples; unless otherwise specified, the raw materials in the examples are commercially available materials.

Mixing chitin, water and mixed acid in proportion, stirring for dissolving, adding the rest components of the rock slices in proportion, stirring for mixing, dispersing to form slurry, pumping the slurry into a reaction kettle for polymerization reaction, wherein the polymerization reaction temperature is controlled to be 40-90 ℃, and the polymerization reaction time is controlled to be 30-150 minutes; after the slurry is subjected to polymerization reaction, pumping out the slurry from the reaction kettle to form roller coating; the roller coating is coated on a carrying belt by a roller coating process, then drying treatment is carried out, the rock slices are obtained after drying, and then the fragmented rock slices are obtained after crushing.

The promoter selected by the invention can be metal soaps such as cobalt, manganese and the like, the combination of metal soaps and tertiary amines, the combination of mercaptan soaps and 1, 3-diketones, thiols, tertiary amines, aldehyde-amine condensates, alum promoters and polyamines; the metal soaps such as cobalt, manganese and the like comprise cobalt naphthenate, cobalt octoate and manganese naphthenate, the tertiary amines comprise dimethylaniline and dimethyl p-m-toluidine, the polyamines comprise triethylamine, the vanadium octoate is used as an alum accelerator, the thiols comprise 2, 4, 6-trimercapto-s-Triazine (TCY), the TCY is triazine thiol or trithiocyanuric acid, the triazine thiol has a high melting point and is difficult to dissolve in a common organic solvent, but is dissolved in an alkaline solution to form corresponding salts, the thiol soaps comprise alkyl thiol, and the aldehyde-amine condensate comprises Vanax 808.

An anti-adhesion rock slice, the component parameters of which are shown in Table 1 and table 1

TABLE 1

TABLE 1

Comparative example 1

Referring to Chinese patent CN110819155A, 50 parts of poly (n-butyl acrylate), 4 parts of tetrafluoroethylene polymer, 0.1 part of hydroxypropyl methyl cellulose, 0.2 part of methyl silicate, 2 parts of hydroxyl silicone oil, 10 parts of titanium dioxide, 25 parts of quartz sand, 0.5 part of anionic antistatic agent, 3 parts of film-forming assistant, 0.3 part of leveling agent, 0.5 part of dispersing agent, 0.3 part of defoaming agent, 0.5 part of water-based thickener and 0.4 part of color paste are added with water to 100 parts, mixed and dispersed with water to form slurry, then coated and dried to obtain the fragmented rock slices, and the fragmented rock slices are obtained after crushing.

Comparative example 2

Referring to Chinese patent CN201610252211.3, 40 parts of polyethyl methacrylate, PTFE and F are mixed according to an embodiment of the invention to obtain an imitation marble color sheet coating, which comprises the following components in parts by weight: 20-30 wt% of color sheet, 15-35 wt% of silicone-acrylic resin or pure acrylic resin, 3-20 wt% of fine sand, 3-10 wt% of assistant and the balance of water. Wherein, the color piece comprises the following components in percentage by weight: 25-40 wt% of elastic resin; 50 to 70 weight percent of filler, 0.4 to 1.6 weight percent of film forming additive, 0.2 to 5 weight percent of dispersant, 0.1 to 0.5 weight percent of flatting agent, 0.1 to 0.5 weight percent of water-based thickener, 0.1 to 1.0 weight percent of color paste and the balance of water. The fine sand is quartz sand, the filler is kaolin, the film forming additive is dodecyl alcohol ester, the dispersant is sodium polyacrylate, the leveling agent is polyether copolymer, the water-based thickener is acrylate copolymer thickener, and the color paste is phthalocyanine blue. Mixing and dispersing with water to form slurry, coating and drying to obtain rock slices, and crushing to obtain fragmented rock slices.

Comparative example 3

Comparative example 3 reference is made to example 1 except that the mixed acid is not boric acid but salicylic acid, an organic acid, and a mineral acid, the mineral acid being diluted hydrochloric acid, the molar ratio of the mineral acid to the organic acid being about 1: 4.

Comparative example 4

Comparative example 4 reference is made to example 1 with the difference that boric acid is used only in the mixed acid and no organic acid is used.

Comparative example 5

Comparative example 5 reference is made to example 1 except that the mixed acid is boric acid and mineral acid and the mineral acid is dilute sulfuric acid, the molar ratio of boric acid to mineral acid being about 1: 4.

Example 6

Comparative example 6 reference is made to example 1 with the difference that boric acid is not selected as the mixed acid, but only the organic acid salicylic acid.

Examples of the experiments

Performance test method

The performance tests of the rock slices comprise rock slice breakage, flexibility and adhesion tests, wherein partial reference is made to the contents of the international standard HG/T4345-.

Testing the damage condition of the rock:

1. the evaluation method comprises the following steps: the appearance of the dried and formed rock piece was observed to see if it was torn, broken or damaged due to poor mold release.

2. Evaluation criteria:

a-breakage degree of 0%;

b-breakage degree is less than or equal to 10%;

c-degree of breakage > 10%;

d-degree of breakage > 20%;

f-breakage degree > 30%;

the results are shown in Table 2;

TABLE 2

	Rock fragment breakage condition
		Example 1	C
Example 2	B
		Example 3	C
Example 4	B
		Example 5	C
Example 6	C
		Example 7	B
Example 8	B
		Comparative example 1	B
Comparative example 2	B
		Comparative example 3	D
Comparative example 4	D
		Comparative example 5	D
Comparative example 6	D

As can be seen from Table 2, the reasons that the examples 1, 3, 5 and 6 and the comparative examples 3 to 5 have certain tearing, crushing and breakage due to poor mold release are mainly that the deacetylation degree of the chitin in the examples 1, 3, 5 and 6 and the comparative examples 3 to 5 is not higher than 20%, so that the viscosity of the prepared roll coating material is high; moreover, we also found that the tearing, breaking and breakage of the comparative examples 3-5 are all higher than those of the examples 1-8, wherein the comparative example 5 is the most serious, and about 25% of rock slices are torn and the like, mainly because the boric acid has certain demolding performance on one hand, and on the other hand, the boric acid is weak acid, so that the molecular weight of chitin can be kept at the original level, but the chitin is insufficient in solubility due to the use of the boric acid alone, so that the prepared rock slices are easy to break, and the combination of the organic acid and the inorganic acid, the combination of the boric acid and the inorganic acid, or the organic acid, so that the molecular weight of the chitin is easy to reduce, so that the viscosity is increased during film forming, and the prepared rock slices are easy to tear.

And (5) testing the damage condition of the rock:

1. the evaluation method comprises the following steps: adding about 40% of water into the rock slices and the natural colored sand or the sintered colored sand, mixing and stirring, wherein the natural colored sand or the sintered colored sand is compounded colored sand with the grain diameter of 10 meshes to 180 meshes, and the stirring time is 30 minutes at the medium speed (about 500 revolutions per minute) of a dispersion machine.

2. Evaluation criteria:

a-breakage degree of 0%;

b-breakage degree is less than or equal to 10%;

c-degree of breakage > 10%;

d-degree of breakage > 20%;

f-breakage degree > 30%;

the results are shown in Table 3;

TABLE 3

	Rock fragment breakage condition
		Example 1	C
Example 2	B
		Example 3	C
Example 4	B
		Example 5	C
Example 6	C
		Example 7	B
Example 8	B
		Comparative example 1	F
Comparative example 2	D
		Comparative example 3	D
Comparative example 4	D
		Comparative example 5	D
Comparative example 6	D

As can be seen from Table 3, in the mixing and stirring of the natural colored sand or the sintered colored sand, the examples 1 to 8 have no new tearing, but the breakage degree of the comparative examples 1 and 2 is obviously improved, wherein the most serious is the comparative example 1, even exceeds 30%, the breakage degree of the examples 1 to 8 of the invention is not increased basically, and the breakage degree of the comparative examples 3 to 6 is increased to a certain degree; the reason is that in the rock slice, the chitin is dissolved by using boric acid and organic acid, so that the chitin is dissolved on one hand, and the molecular weight of the chitin is degraded less on the other hand, so that the rock slice prepared by the method has better flexibility. Further, the applicant also found that the samples of comparative examples 1 and 2 tend to adhere together easily during stirring because part of the acrylic resin in the samples of comparative examples 1 and 2 dissolves in water, so that the rock pieces have some stickiness.

Flexibility test one:

1. the evaluation method comprises the following steps: the rock pieces were first kept at 50 ℃ in air saturated with air humidity for 7 days, and 3 test pieces having a diameter of more than 3mm were selected and folded by 180 ° with the thumb and forefinger, and the bends were immediately observed.

2. Evaluation criteria:

a-has no cracks and no fracture phenomenon;

the B-2 sheets have no cracks and no fracture phenomenon;

the C-1 sheet or 0 sheet has no crack and no fracture phenomenon.

The results are shown in Table 4;

TABLE 4

	Condition of bend
		Example 1	A
Example 2	A
		Example 3	A
Example 4	A
		Example 5	A
Example 6	A
		Example 7	A
Example 8	A
		Comparative example 1	B
Comparative example 2	C
		Comparative example 3	A
Comparative example 4	B
		Comparative example 5	A
Comparative example 6	A

As can be seen from Table 4, the chitin obtained in examples 1-8 was dissolved in boric acid and organic acid, so that the chitin was dissolved, and the molecular weight of chitin was less degraded, so that the rock slices obtained in the present invention had good flexibility, and thus, no cracks and no fractures were formed. Comparative example 1 had one piece cracked, while comparative example 2 had two pieces cracked; comparative example 4 in which the chitin was dissolved using boric acid, the chitin was not completely dissolved to some extent, and a crack was also generated.

And (2) flexibility test II:

1. the evaluation method comprises the following steps: the rock pieces were first placed in air saturated in air at 50 ℃ for 7 days at room temperature, and then 3 test pieces having a diameter of more than 3mm were selected and folded by 180 ° with the thumb and forefinger, and the curve was observed immediately.

2. Evaluation criteria:

a-has no cracks and no fracture phenomenon;

the B-2 sheets have no cracks and no fracture phenomenon;

the C-1 sheet or 0 sheet has no crack and no fracture phenomenon.

TABLE 5

	Condition of bend
		Example 1	A
Example 2	A
		Example 3	A
Example 4	A
		Example 5	A
Example 6	A
		Example 7	A
Example 8	A
		Comparative example 1	C
Comparative example 2	C
		Comparative example 3	B
Comparative example 4	B
		Comparative example 5	B
Comparative example 6	B

As can be seen from Table 5, the chitin obtained in examples 1-8 was dissolved in boric acid and organic acid, so that the chitin was dissolved, and the molecular weight of chitin was less degraded, so that the rock slices obtained in the present invention had good flexibility, and thus, no cracks and no fractures were formed. Cracks appear in the comparative examples 1 and 2, and because the comparative examples 1 and 2 both adopt thermosetting resin, after the thermosetting resin is placed in air with the temperature of 50 ℃ and the air humidity of more than 95 percent for 7 days, the thermosetting resin is cured to a certain degree; surprisingly, the applicant found that comparative examples 3, 5 and 6 also had cracks in one piece, because comparative examples 3, 5 and 6 had a certain degradation of chitin and a certain reduction of the flexibility of the rock fragments due to the absence of boric acid after being left in air at saturated air humidity for 7 days.

The adhesion test one:

1. the evaluation method comprises the following steps: the rock slices are firstly placed in an overlapping way at the room temperature of 20-25 ℃ in air with saturated air humidity for 7 days, 4 samples are placed in an overlapping way at the load of 100 g (40 +/-2) DEG C for 2 hours, the samples are separated by hands, and the adhesion condition among the samples is observed.

2. Evaluation criteria:

a-is substantially non-blocking;

b-partial adhesion;

c-complete adhesion and caking;

the results are shown in Table 6.

TABLE 6

	Adhesion between test specimens
		Example 1	A
Example 2	A
		Example 3	A
Example 4	A
		Example 5	A
Example 6	A
		Example 7	A
Example 8	A
		Comparative example 1	B
Comparative example 2	B
		Comparative example 3	B
Comparative example 4	A
		Comparative example 5	B
Comparative example 6	A

As can be seen from Table 6, the rock pieces produced by the present invention have good anti-sticking properties due to the non-stick properties of chitin in examples 1-8, and thus, the samples are substantially non-stick. While both comparative example 1 and comparative example 2 showed partial blocking, the applicant found that comparative example 3 and comparative example 5 showed partial blocking because part of the chitin was degraded to a sufficiently small molecular weight due to the use of a strong acid in comparative example 3 and comparative example 5, resulting in a certain stickiness of the resulting rock laminate.

And (2) testing the adhesion:

1. the evaluation method comprises the following steps: the rock slices were first placed in air at room temperature of 20-25 deg.C and saturated in air humidity for 7 days, then 4 samples were overlaid and placed under a load of 100 g (40 + -2) deg.C for 2 hours, the samples were separated by hand, and adhesion between the samples was observed.

2. Evaluation criteria:

a-is substantially non-blocking;

b-partial adhesion;

c-complete adhesion and caking;

the results are shown in Table 7.

TABLE 7

	Adhesion between test specimens
		Example 1	A
Example 2	A
		Example 3	A
Example 4	A
		Example 5	A
Example 6	A
		Example 7	A
Example 8	A
		Comparative example 1	C
Comparative example 2	C
		Comparative example 3	B
Comparative example 4	A
		Comparative example 5	B
Comparative example 6	B

As can be seen from Table 7, the rock pieces produced by the present invention have better anti-sticking properties due to the non-stick properties of chitin in examples 1-8, and thus, the samples are substantially non-stick. While both comparative example 1 and comparative example 2 showed complete blocking and caking, the applicant found that comparative example 3, comparative example 5 and comparative example 6 showed partial blocking because part of the chitin was degraded to a sufficiently small molecular weight due to the use of strong acid in comparative example 3 and comparative example 5, resulting in a certain stickiness of the resulting rock pieces, and that comparative example 6 also resulted in a certain degree of adhesion of the resulting rock pieces due to the absence of boric acid.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. An anti-adhesion rock slice is characterized by comprising the following components in percentage by weight: 30-50 parts of water-based acrylic resin, 5-20 parts of chitin, 0.1-2 parts of mixed acid, 0.05-1 part of accelerator, 15-45 parts of filler and water which are complemented to 100 parts;

wherein the mixed acid comprises boric acid and at least one organic acid, the molar ratio of the boric acid to the organic acid is 1: 10-10: 1,

the deacetylation degree of the chitin is lower than 50 percent,

the water-based acrylate is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate and glycidyl methacrylate.

2. Rock laminate according to claim 1, characterized in that the organic acid is selected from one or more of salicylic acid, succinic acid, glutaric acid, phthalic acid, iminodiacetic acid, pyromellitic acid, butanetetracarboxylic acid.

3. The rock laminate of claim 1, wherein the accelerator is one or more of cobalt, manganese metal soaps, thiols, tertiary amines, aldehyde-amine condensates, vanadium accelerators and polyamines.

4. The rock laminate of claim 1, wherein the composition of the rock laminate further comprises an initiator, the initiator being a peroxide.

5. The rock laminate as claimed in claim 4, wherein the weight ratio of the accelerator to the initiator is 1 (1-10).

6. The rock laminate as claimed in claim 1, further comprising other conventional optional auxiliary agents including: 1 to 5 portions of film forming additive, 0.5 to 5.0 portions of flatting agent, 0.5 to 5 portions of dispersant, 0.1 to 0.5 portion of defoaming agent, 0.1 to 0.5 portion of water-based thickener and 0.1 to 1.0 portion of color paste.

7. A method of producing a rock laminate according to any one of claims 1 to 6, comprising the steps of:

(1) mixing chitin, water and mixed acid in proportion, stirring for dissolving, adding the rest components of the rock slice in proportion, stirring for mixing, dispersing to form slurry, pumping the slurry into a reaction kettle for polymerization reaction, wherein the polymerization reaction temperature is controlled to be 40-90 ℃, and the polymerization reaction time is controlled to be 30-150 minutes;

(2) after the slurry is subjected to polymerization reaction, pumping out the slurry from the reaction kettle to form roller coating;

(3) and coating the slurry on a carrying belt by the roller coating through a roller coating process, and then performing drying treatment to obtain the rock slice after drying.