阅读说明：本技术 一种抗菌防霉石英石及其制备方法 (Antibacterial and mildewproof quartz stone and preparation method thereof ) 是由 林建家 吴阿伟 项观长生 林港 李瑞銮 林建旋 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种抗菌防霉石英石及其制备方法,所述石英石的原料按质量份数计包括：石英砂80～95份、不饱和聚酯树脂5～20份、固化剂0.08～0.2份、偶联剂0.1～0.5份、颜料0.1～5份、磷酸锆载银锌复合抗菌剂0.125～0.5份。本发明通过科学配方、优化生产工艺,制得的石英石具有优良的抗菌效果及防霉效果,且板材物理性能优异。(The invention discloses an antibacterial and mildewproof quartz stone and a preparation method thereof, wherein the quartz stone comprises the following raw materials in parts by weight: 80-95 parts of quartz sand, 5-20 parts of unsaturated polyester resin, 0.08-0.2 part of curing agent, 0.1-0.5 part of coupling agent, 0.1-5 parts of pigment and 0.125-0.5 part of zirconium phosphate silver-zinc composite antibacterial agent. According to the invention, through scientific formula and optimized production process, the prepared quartz stone has excellent antibacterial effect and mildew-proof effect, and the plate has excellent physical properties.)

1. An antibiotic mould proof quartz which characterized in that: the quartz stone comprises the following raw materials in parts by weight: 80-95 parts of quartz sand, 5-20 parts of unsaturated polyester resin, 0.08-0.2 part of curing agent, 0.1-0.5 part of coupling agent, 0.1-5 parts of pigment and 0.125-0.5 part of zirconium phosphate silver-zinc composite antibacterial agent; the particle size of the zirconium phosphate silver-zinc-loaded composite antibacterial agent is 400 meshes.

2. The antibacterial and mildewproof quartz stone according to claim 1, wherein: the unsaturated polyester resin comprises at least one of epoxy resin, phenolic resin, acrylic resin or polyurethane resin.

3. The antibacterial and mildewproof quartz stone according to claim 1, wherein: the curing agent comprises one or more of tert-butyl peroxy (2-ethyl hexanoate), methyl ethyl ketone peroxide, tert-butyl peroxybenzoate, dibenzoyl peroxide, or aliphatic polyamine.

4. The antibacterial and mildewproof quartz stone according to claim 1, wherein: the coupling agent comprises a silane coupling agent or an aluminate coupling agent; the silane coupling agent comprises at least one of gamma-methacryloxy trimethoxy silane, gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, N-beta (aminoethyl) -gamma-aminopropyl trimethoxy silane, N- (B-aminoethyl) -gamma-aminopropyl triethoxy silane, N-beta (aminoethyl) -gamma-aminopropyl trimethoxy silane, aniline methyl triethoxy silane, gamma-aminopropyl triethoxy silane, vinyl trimethoxy silane or gamma-chloropropyl triethoxy silane.

5. The antibacterial and mildewproof quartz stone according to claim 1, wherein: the pigment comprises at least one of inorganic pigment, organic pigment or color paste; the inorganic pigment comprises at least one of titanium white, medium chrome yellow, iron red or iron black; the organic pigment comprises at least one of scarlet powder, phthalocyanine green or phthalocyanine blue; the color paste comprises at least one of white paste, black paste, scarlet paste, phthalocyanine green paste or phthalocyanine blue paste.

6. The method for preparing the antibacterial and mildewproof quartz stone according to any one of claims 1 to 5, wherein the method comprises the following steps: the method comprises the following steps: taking the components in proportion; uniformly mixing the zirconium phosphate silver-zinc-loaded composite antibacterial agent with the quartz sand to obtain a first mixture; uniformly mixing the unsaturated polyester resin, the curing agent and the coupling agent to obtain a second mixture; and uniformly mixing the first mixture and the second mixture, distributing, pressing and curing to obtain the antibacterial and mildewproof quartz stone.

7. The method for preparing the antibacterial and mildewproof quartz stone according to claim 6, wherein the method comprises the following steps: when the pigment is solid, uniformly mixing the pigment with the zirconium phosphate silver-zinc-loaded composite antibacterial agent and the quartz sand to obtain a first mixture; and when the pigment is liquid, uniformly mixing the pigment with the unsaturated polyester resin, the curing agent and the coupling agent to obtain a second mixture.

8. The method for preparing the antibacterial and mildewproof quartz stone according to claim 6, wherein the method comprises the following steps: the mixing frequency is 15-55 Hz, and the mixing time is 3-10 min.

9. The method for preparing the antibacterial and mildewproof quartz stone according to claim 6, wherein the method comprises the following steps: the pressing is vibration pressing molding under the vacuum condition; the pressure is 50-200T, the vibration frequency is 40-55 Hz, and the vibration time is 60-600 s.

10. The method for preparing the antibacterial and mildewproof quartz stone according to claim 6, wherein the method comprises the following steps: the curing conditions are that the curing temperature is 80-120 ℃, and the curing time is 60-90 min.

Technical Field

The invention relates to the technical field of quartz stone plates, in particular to a quartz stone plate for a kitchen table board.

Background

The prior quartz stone plate has the advantages of rich colors, outstanding product performance, high hardness, scratch resistance, pollution resistance, low water absorption, low shrinkage and the like, and is widely used in industrial production and daily life as a decorative material for floor tiles, wall surfaces, window decks, kitchen table tops and the like. When the artificial quartz stone is used in places where the artificial quartz stone is in contact with food or in wet places, bacteria often grow on the surface of the artificial quartz stone. The common artificial quartz stone has no effect of inhibiting or killing bacteria.

Some existing antibacterial quartz stone plates are added with antibacterial ingredients, but the problems of large addition amount of the antibacterial ingredients, uneven dispersion, easy yellowing and aging of the quartz stone plates and the like still exist, the performance and the antibacterial effect of the plates are influenced, and the artificial quartz stone is unfavorable for use and popularization in the field of kitchens. Therefore, it is necessary to provide a quartz stone with good antibacterial and mildewproof effects and stable plate performance, so as to provide a guarantee for the health of users.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an antibacterial and mildewproof quartz stone and a preparation method thereof. According to the invention, through scientific formula and optimized production process, the prepared quartz stone has excellent antibacterial effect and mildew-proof effect, and the plate has excellent physical properties.

One of the technical schemes adopted by the invention for solving the technical problems is as follows:

the antibacterial and mildewproof quartz stone comprises the following raw materials in parts by weight: 80-95 parts of quartz sand, 5-20 parts of unsaturated polyester resin, 0.08-0.2 part of curing agent, 0.1-0.5 part of coupling agent, 0.1-5 parts of pigment and 0.125-0.5 part of zirconium phosphate silver-zinc composite antibacterial agent; the particle size of the zirconium phosphate silver-zinc-loaded composite antibacterial agent is 400 meshes.

The particle size of 400 meshes means that the zirconium phosphate silver-zinc-loaded composite antibacterial agent is sieved by a 400-mesh sieve to obtain a part which can be sieved by the 400-mesh sieve for use, namely the maximum particle size of the zirconium phosphate silver-zinc-loaded composite antibacterial agent powder is about 38 mu m corresponding to the 400-mesh sieve. Similarly, the object of the present invention that the particle size is 10000 refers to that the zirconium phosphate silver-zinc composite antibacterial powder passes through 10000 meshes of sieve, i.e. the maximum particle size of the powder is about 1.3 μm corresponding to 10000 meshes of sieve.

The particle size of the zirconium phosphate silver-zinc-loaded composite antibacterial agent is 400 meshes. If the particle size of the antibacterial agent powder is too small, the antibacterial agent powder is difficult to disperse uniformly and is distributed unevenly in the quartz stone, so that the physical property and the antibacterial property of the quartz stone material are influenced; if the particle size of the antibacterial agent powder is too large, it is difficult to sufficiently exert antibacterial and antifungal activity.

In one embodiment, the particle size of the quartz sand is 40-100 meshes, that is, the maximum particle size of the quartz sand is about 150-420 μm corresponding to 40-100 meshes. The production cost can be reduced by selecting the raw materials of particles with the conventional particle size and quartz powder.

In one embodiment, the unsaturated polyester resin comprises at least one of an epoxy resin, a phenolic resin, an acrylic resin, or a polyurethane resin. The unsaturated polyester resin has excellent performance and flexible process performance, is used for adhering and curing the raw material quartz sand, and has good mechanical property after curing.

In one embodiment, the curing agent comprises one or more of t-butyl peroxy (2-ethylhexanoate), methyl ethyl ketone peroxide, t-butyl peroxybenzoate, dibenzoyl peroxide, or an aliphatic polyamine. The curing agent is added to promote the curing of the unsaturated polyester resin, and further, a curing agent for curing the unsaturated polyester resin at normal temperature or medium temperature can be used.

In one embodiment, the coupling agent comprises a silane coupling agent or an aluminate coupling agent. The coupling agent is used for catalyzing the bonding between the unsaturated polyester resin and the quartz sand.

For example, the silane coupling agent includes at least one of gamma-methacryloxy trimethoxysilane, gamma- (2, 3-glycidoxy) propyl trimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, N- (B-aminoethyl) -gamma-aminopropyltriethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, anilinomethyltriethoxysilane, gamma-aminopropyltriethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, or gamma-chloropropyltriethoxysilane.

In one embodiment, the pigment comprises at least one of an inorganic pigment, an organic pigment, or a color paste. The pigment is used for blending colors and varieties of quartz stone patterns, so that the colors of the quartz stones are rich and colorful.

Wherein the inorganic pigment comprises at least one of titanium white, medium chrome yellow, iron red or iron black. Inorganic pigments are mostly solids. The titanium white, the medium chrome yellow, the iron red and the iron black have the performances of sun resistance, heat resistance, weather resistance, good solvent resistance and the like, and the pigment covering capability is strong.

Wherein the organic pigment comprises at least one of scarlet powder, phthalocyanine green, or phthalocyanine blue. Organic pigments are mostly solids. The scarlet powder, phthalocyanine green and phthalocyanine blue have bright colors, strong tinting strength and excellent performances.

The color paste comprises at least one of white paste, black paste, scarlet paste, phthalocyanine green paste and phthalocyanine blue paste. Most of the color paste is liquid, has good color rendering property, uniform coloring, reduced pollution, good light resistance and weather resistance, and is not easy to fade and pulverize.

The second technical scheme adopted by the invention for solving the technical problems is as follows:

a preparation method of antibacterial and mildewproof quartz stone comprises the following steps: taking the components in proportion; uniformly mixing the zirconium phosphate silver-zinc-loaded composite antibacterial agent with the quartz sand to obtain a first mixture; uniformly mixing the unsaturated polyester resin, the curing agent and the coupling agent to obtain a second mixture; and uniformly mixing the first mixture and the second mixture, distributing, pressing and curing to obtain the antibacterial and mildewproof quartz stone.

In the raw materials of the antibacterial and mildewproof quartz stone, quartz sand is solid particles or powder, and the zirconium phosphate silver-zinc-carrying composite antibacterial agent is solid powder; the unsaturated polyester resin, the curing agent and the coupling agent are liquid; the pigment may be solid or liquid. Zirconium phosphate carries silver-zinc composite antibacterial agent is solid powder, and the addition is less, if adopt traditional compounding mode, directly mix jointly with liquid components such as unsaturated polyester resin, curing agent, coupling agent, because these liquid components are mostly high molecular polymer, have certain stickness and quantity big, lead to zirconium phosphate to carry silver-zinc composite antibacterial agent to be difficult to the homodisperse, cause antibacterial agent to distribute inhomogeneous in the quartz, and antibacterial property is unstable. By adopting the mixing mode, the solid component and the liquid component are respectively mixed firstly, the zirconium phosphate silver-zinc-loaded composite antibacterial agent is uniformly mixed with the quartz sand which is solid, and the zirconium phosphate silver-zinc-loaded composite antibacterial agent is fully dispersed in the solid component mixing step; then the zirconium phosphate silver-loaded zinc composite antibacterial agent is mixed with liquid components such as unsaturated polyester resin, a curing agent, a coupling agent and the like which are uniformly mixed, so that the possibility that the zirconium phosphate silver-loaded zinc composite antibacterial agent is stuck by the unsaturated polyester resin and the like and is not easy to disperse is reduced, the problem that the antibacterial performance of quartz is unstable due to the fact that the antibacterial agent is not uniformly distributed is solved, and the obtained quartz has uniform antibacterial performance and good stability; and the mixing times are limited, and the process is simple.

When the pigment is solid, uniformly mixing the pigment, the zirconium phosphate silver-zinc-loaded composite antibacterial agent and the quartz sand to obtain a first mixture; and when the pigment is liquid, uniformly mixing the pigment with the unsaturated polyester resin, the curing agent and the coupling agent to obtain a second mixture. I.e. with a solid component if the pigment is solid and with a liquid component if the pigment is liquid, depending on the nature of the pigment used. It is best to adopt color paste and mix it with unsaturated polyester resin, curing agent, coupling agent and other liquid components.

Further, the mixing frequency is 15-55 Hz, and the mixing time is 3-10 min.

Further, the pressing condition is that under the vacuum condition of-0.1 Mpa, the vibration pressing is carried out for forming; the pressure is 50-200T (ton), the vibration frequency is 40-55 Hz, and the vibration time is 60-600 s.

Further, the curing conditions are that the curing temperature is 80-120 ℃ and the curing time is 60-90 min.

The equipment, reagents, processes, parameters and the like related to the invention are conventional equipment, reagents, processes, parameters and the like except for special description, and no embodiment is needed.

All ranges recited herein include all point values within the range.

In the present invention,% is mass% and ratio is mass ratio unless otherwise specified. The units of said mass are for example grams, kilograms or tons.

In the invention, the normal temperature can be 10-50 ℃, and the medium temperature can be 50-120 ℃.

Compared with the background technology, the technical scheme has the following advantages:

1. the zirconium phosphate silver-zinc-loaded composite antibacterial agent is of a porous structure, has a large specific surface area and strong adsorption capacity, can enhance the binding force between a carrier and metal ions, can effectively avoid the color change of silver, has good chemical stability, and is not easy to yellow quartz; and can generate a certain metal ion slow release effect, and the antibacterial and mildewproof capabilities are durable; and the porous structure can also play a role in removing odor and adsorbing organic matters. Under the condition that the addition proportion of the zirconium phosphate silver-zinc-loaded composite antibacterial agent is very low (for example, the addition proportion is 0.125%), the quartz stone has good antibacterial effect (the antibacterial rate is more than 99%) and mildew-proof effect, the cost is saved, and the physical performance of the quartz stone is not influenced.

2. The zirconium phosphate silver-zinc-loaded composite antibacterial agent can achieve good antibacterial and mildewproof effects under the condition of a low addition ratio, but the zirconium phosphate silver-zinc-loaded composite antibacterial agent is difficult to disperse uniformly due to the small addition amount. In order to solve the problems of uneven dispersion or agglomeration of the zirconium phosphate silver-zinc-loaded composite antibacterial agent, quartz sand, unsaturated polyester resin and the like and avoid the problems of white fog, granular sensation, easy color change, uneven antibacterial effect and the like on the surface of the produced quartz stone, the invention ensures that the zirconium phosphate silver-zinc-loaded composite antibacterial agent and the quartz sand are uniformly mixed by controlling the particle size of the zirconium phosphate silver-zinc-loaded composite antibacterial agent and changing the mixing mode in the preparation process, so that the prepared quartz stone has the advantages of uniform dispersion of all components, uniform distribution of antibacterial effect and high antibacterial overall performance, and is favorable for popularization in the field of kitchens.

Detailed Description

The present invention will be described in detail with reference to the following examples: