阅读说明：本技术 一种艾草改性石英石及其制备方法 (Wormwood modified quartz stone and preparation method thereof ) 是由 黄效华 唐宇欣 姜吉术 杨继奎 黄效谦 刘新文 于 2020-07-08 设计创作，主要内容包括：本发明提供一种艾草改性石英石及其制备方法,该种艾草改性石英石的原材料组成,包括：40-50份石英砂、20-25份改性麦饭石、2-5份含艾草提取物的功能改性剂、6-10份不饱和聚酯、10-15份硅砂、8-10份方解石、2-4份KH-570、2-5份固化剂、1-3份甘油三月桂酸酯,经过混料、真空除气、压制成型步骤,最终得到的艾草改性石英石,不仅具有植物抑菌功效,抗菌效果好,而且石英石板材硬度高,韧性大,耐磨耐用,是一种新型的石英石材料制品。(The invention provides a wormwood modified quartz stone and a preparation method thereof, and the wormwood modified quartz stone comprises the following raw materials: 40-50 parts of quartz sand, 20-25 parts of modified medical stone, 2-5 parts of a functional modifier containing wormwood extract, 6-10 parts of unsaturated polyester, 10-15 parts of silica sand, 8-10 parts of calcite, 2-4 parts of KH-570, 2-5 parts of a curing agent and 1-3 parts of glycerol trilaurate, and the wormwood modified quartz stone finally obtained through the steps of mixing, vacuum degassing and compression molding has plant bacteriostasis effect and good antibacterial effect, and the quartz stone plate is high in hardness, toughness and wear-resistant and durable, so that the wormwood modified quartz stone is a novel quartz stone material product.)

1. The wormwood modified quartz stone is characterized by comprising the following raw materials in parts by weight:

40-50 parts of quartz sand, 20-25 parts of modified medical stone, 2-5 parts of functional modifier containing wormwood extract, 6-10 parts of unsaturated polyester, 10-15 parts of silica sand, 8-10 parts of calcite, 2-4 parts of KH-570, 2-5 parts of curing agent and 1-3 parts of trilaurin.

2. The quartz stone according to claim 1, wherein the modified medical stone is prepared by a method comprising:

1) mechanically pulverizing Maifanitum into 0.2-1mm granule;

2) immersing medical stone particles into a sodium hexametaphosphate solution, performing ultrasonic dispersion, dehydrating and drying to obtain purified medical stone particles;

3) adding purified Maifanitum particles into DMF solution, adding sodium carboxymethylcellulose as promoter, adding dilute alkali dropwise to adjust pH to 8.5-11, adding nanometer SiO2 aerogel, heating to 80 deg.C, stirring at 1000r/min for 5-8 hr, standing, and drying to obtain modified Maifanitum.

3. The quartz stone according to claim 2, wherein the concentration of the sodium hexametaphosphate solution is 0.5 to 1.2 g/L; the sodium carboxymethylcellulose is added at a concentration of 5-8 wt%.

4. The quartz stone according to claim 2, wherein the nano SiO2 aerogel is added in an amount of 0.02-0.06% by weight of the purified maifanite particles.

5. The quartz stone according to claim 4, wherein the SiO2 aerogel has a particle size of 1-40nm, density 50-80kg/m³。

6. The quartz stone according to claim 2, wherein the ultrasonic dispersion is carried out at an ultrasonic frequency of 55-60KHz for 10-30 minutes.

7. The quartz stone according to claim 1, wherein the curing agent is methyl ethyl ketone peroxide.

8. A preparation method of wormwood modified quartz stone is characterized by comprising the following steps: mixing materials, vacuum degassing and pressing and forming.

9. The method of claim 8, wherein the vacuum degassing is performed under a vacuum of 1 to 2kPa for a vacuum treatment time of 15 to 20 min.

10. The production method according to claim 8, wherein the press forming is carried out with a press vacuum of 0.05 to 0.1 MPa; first pressing, vibrating for 60-65S under 20-22 HZ; and performing secondary pressing, and vibrating at 50-55HZ for 90-100S.

Technical Field

The invention belongs to the technical field of quartz stone modification, and particularly relates to wormwood modified quartz stone and a preparation method thereof.

Background

The quartz stone is a large-size plate prepared from quartz stone crystals, resin, trace pigments and other materials by an isomeric polymerization technology under a vacuum condition, and 94% of the quartz crystals are in a main body structure, so that the quartz stone is harder and more compact in texture and has the characteristics of wear resistance, pressure resistance, high temperature resistance, corrosion resistance, seepage prevention and the like which are not possessed by other decorative materials. Quartz is a mineral resource with stable physical and chemical properties, and quartz is a short name for the plate produced by the quartz plate manufacturers at present, and is called as quartz because the quartz content of the main component of the plate is more than 93 percent.

The artificial quartz stone is a novel polymeric material which is prepared by mixing natural quartz sand, quartz powder, resin and pigment and processing the mixture by special equipment. The plate has compact texture, low water absorption, strong oil stain resistance, better acid and alkali resistance and chemical corrosion resistance, can keep smooth and attractive appearance, does not fade or generate print for a long time, and is quite popular with people.

The antibacterial environment-friendly material is the hot tide of a new material, in the prior art, an inorganic or organic antibacterial agent is usually added to prepare a product with antibacterial and mildewproof effects, a substance with natural antibacterial activity is added to a quartz product, and the prior art does not report. The plant extract is directly added in the quartz stone plate manufacturing process, the plant extract is difficult to disperse uniformly, the hardness of the plate is reduced, the quartz stone is easy to break in the using process, and the wear resistance of the quartz stone is reduced.

Disclosure of Invention

In order to solve the problems in the prior art and further optimize the prior art, the invention provides a wormwood modified quartz stone and a preparation method thereof, so as to realize the following purposes:

1. improve hardness and toughness and improve wear resistance

2. Has antibacterial effect of natural plants

In order to solve the technical problems, the invention adopts the following technical scheme:

the wormwood modified quartz stone is characterized by comprising the following raw materials in parts by weight:

40-50 parts of quartz sand, 20-25 parts of modified medical stone, 2-5 parts of functional modifier containing wormwood extract, 6-10 parts of unsaturated polyester, 10-15 parts of silica sand, 8-10 parts of calcite, 2-4 parts of KH-570, 2-5 parts of curing agent and 1-3 parts of trilaurin;

the unsaturated polyester is o-benzene unsaturated polyester, and the viscosity at 25 ℃ is 0.9-1.3 Pa.s;

the quartz sand is mixed quartz sand, wherein the quartz sand accounts for 35-40% of the quartz sand with the particle size of 40-50 microns, 35-40% of the quartz sand with the particle size of 0.5-2mm, and the balance is large-particle quartz sand with the particle size of 2-5 mm;

the curing agent is methyl ethyl ketone peroxide;

the preparation method of the modified medical stone comprises the following steps:

1) mechanically pulverizing Maifanitum into 0.2-1mm granule;

2) immersing medical stone particles into a sodium hexametaphosphate solution, performing ultrasonic dispersion, dehydrating and drying to obtain purified medical stone particles;

3) adding purified Maifanitum particles into DMF solution, adding sodium carboxymethylcellulose as promoter, dropwise adding dilute alkali to adjust pH to 8.5-11, adding nanometer SiO2 aerogel, heating to 80 deg.C, stirring at 1000r/min for 5-8 hr, standing, and drying to obtain modified Maifanitum;

the concentration of the sodium hexametaphosphate solution is 0.5-1.2 g/L; the sodium carboxymethylcellulose is added at a concentration of 5-8 wt%.

The addition amount of the nano SiO2 aerogel accounts for 0.02-0.06% of the weight of the purified medical stone particles;

the SiO2 aerogel has the particle size of 1-40nm and the density of 50-80kg/m³；

Performing ultrasonic dispersion, wherein the ultrasonic frequency is 55-60KHz, and the ultrasonic treatment is performed for 10-30 minutes;

the preparation method of the functional modifier containing the wormwood extract comprises the following steps: dissolving the wormwood extract into water, adding the montmorillonite porous nano material for soaking and mixing, and fully allowing the wormwood extract to enter the porous material to obtain the wormwood extract-containing functional modifier;

the montmorillonite porous nano material has the particle size of 50-100 nm;

the soaking and mixing are carried out, and the bath ratio of the wormwood extract aqueous solution is 1: 10-15; stirring for 30-120min at the rotating speed of 30-60 r/min;

the preparation method of the wormwood modified quartz stone is characterized by comprising the following steps: mixing, vacuum degassing, press forming and curing;

vacuum degassing with a vacuum degree of 1-2kPa for 15-20 min;

the pressing forming is carried out, and the vacuum degree of a pressing machine is 0.05-0.1 MPa; first pressing, vibrating for 60-65S under 20-22 HZ; pressing for the second time, and vibrating for 90-100S at 50-55 HZ;

and (3) curing, wherein the curing temperature is 95-100 ℃.

By adopting the technical scheme, the invention has the beneficial effects that:

1. the quartz stone plate product prepared by using the wormwood modified quartz stone has plant bacteriostatic effect and good antibacterial effect, has bacteriostatic rate of common staphylococcus aureus, escherichia coli and candida albicans up to 85-92%, and can be applied to sanitary places such as kitchen tables and the like;

2. the quartz stone plate product prepared by using the wormwood modified quartz stone has high hardness, the volume density is 3.22-3.30g/cm3, and the hardness reaches 7.5-8 Mohs grade;

3. by adopting the wormwood modified quartz stone, the dry bending strength reaches 46-48MPa, the compressive strength is 265-270MPa, and the wormwood modified quartz stone has high strength, high toughness, wear resistance and use resistance;

4. by adopting the wormwood modified quartz stone, the prepared quartz stone plate can resist the high temperature of 400-450 ℃, a 450-DEG C high-temperature object is placed on the quartz stone plate for 30min without obvious hot stamping, and the high-temperature strength is high;

5. the wormwood modified quartz stone is not easy to crack and deform and has good pressure resistance.

The specific implementation mode is as follows:

the invention is further illustrated below with reference to specific examples.