阅读说明：本技术 一种能够吸附甲醛的spc地板 (SPC floor capable of adsorbing formaldehyde ) 是由 张以娉 林邑群 于 2019-10-10 设计创作，主要内容包括：本发明提供了一种能够吸附甲醛的SPC地板,SPC地板结构从下至上依次设置的采用压纹辊压制成型的竹炭基材层、彩膜层、耐磨层,耐磨层和彩膜层由PVC材质构成,耐磨层底面热压一层三聚氰胺浸渍纸层,三聚氰胺浸渍纸层以细菌纤维素膜为原料制备而成,三聚氰胺浸渍纸层上还喷涂一层厚度为0.8～1.2mm的甲醛吸附层,甲醛吸附层由盐酸、钼酸铵、硼氢化钾、纳米二氧化钛、氯化钯、氢氧化钠和聚四氟乙烯制备而成。本发明的SPC地板环保又卫生,在增加其耐磨耐刮性能的同时又防水,生产工艺简单,且SPC地板在不产生甲醛的同时又可以吸附其他家具释放的甲醛气体,健康环保。(The invention provides an SPC floor capable of adsorbing formaldehyde, wherein a bamboo charcoal base material layer, a color film layer and a wear-resistant layer which are formed by pressing by adopting a knurling roller are sequentially arranged on an SPC floor structure from bottom to top, the wear-resistant layer and the color film layer are made of PVC materials, a melamine impregnated paper layer is thermally pressed on the bottom surface of the wear-resistant layer, the melamine impregnated paper layer is prepared by taking a bacterial cellulose membrane as a raw material, a formaldehyde adsorption layer with the thickness of 0.8-1.2 mm is further sprayed on the melamine impregnated paper layer, and the formaldehyde adsorption layer is prepared by hydrochloric acid, ammonium molybdate, potassium borohydride, nano titanium dioxide, palladium chloride, sodium hydroxide and polytetrafluoroethylene. The SPC floor is environment-friendly and sanitary, is waterproof while increasing the wear-resisting and scratch-resisting properties, is simple in production process, can adsorb formaldehyde gas released by other furniture while not generating formaldehyde, and is healthy and environment-friendly.)

1. The utility model provides a can adsorb SPC floor of formaldehyde, the SPC floor structure is from supreme bamboo charcoal substrate layer (1), various rete (2), wearing layer (3) of having set gradually down, and bamboo charcoal substrate layer (1), various rete (2) and wearing layer (3) adopt embossing roll suppression shaping, various rete (2) and wearing layer (3) comprise the PVC material, its characterized in that: the bamboo charcoal base material layer (1) contains 6-8 wt% of bamboo charcoal powder, a melamine impregnated paper layer (4) is hot-pressed on the bottom surface of the wear-resistant layer (3), the melamine impregnated paper layer (4) is prepared by taking a bacterial cellulose membrane as a raw material, a formaldehyde adsorption layer (5) with the thickness of 0.8-1.2 mm is further sprayed on the melamine impregnated paper layer (4), and the formaldehyde adsorption layer (5) is prepared from hydrochloric acid, ammonium molybdate, potassium borohydride, nano titanium dioxide, palladium chloride, sodium hydroxide and polytetrafluoroethylene.

2. An SPC floor capable of adsorbing formaldehyde according to claim 1, characterized in that: the preparation method of the melamine impregnated paper used for the melamine impregnated paper layer (4) is as follows:

s11 preparation of bacterial cellulose membranes: adding rhizobia bacteria or sarcina bacteria into a culture medium which takes glucose derivatives as a carbon source and takes nitrate or ammonium salt as a nitrogen source, fermenting in a reaction kettle to prepare a bacterial cellulose wet film, soaking the bacterial cellulose wet film in an alkali solution, and washing with deionized water to make the pH value of the bacterial cellulose wet film neutral for later use;

s12 preparation of high strength impregnation base paper: cutting the neutral bacterial cellulose wet film prepared in the step S11 into blocks, mixing the blocks with water according to the weight ratio of 1: 6-9, mechanically decomposing the blocks in a standard fiber dissociator at the rotating speed of 12000-13000 rmp to prepare bacterial cellulose suspension, uniformly mixing the suspension with paper pulp according to the weight ratio of 5-8%, and then pressing and drying the mixture to prepare high-strength impregnated base paper;

s13 softening of melamine resin: modifying melamine resin by using alkyd resin or thiourea, adding 3-4 wt% of isocyanate, and quickly and uniformly stirring to obtain a softened melamine resin impregnation solution;

s14 preparation of melamine impregnated paper: and (4) filling the softened melamine resin impregnation liquid prepared in the step (S13) into an impregnator, impregnating the high-strength impregnated base paper prepared in the step (S12) into the softened melamine resin, drying to prepare the polycyanurate impregnated paper, and storing in a special warehouse with constant temperature and constant humidity.

3. An SPC floor capable of adsorbing formaldehyde according to claim 2, characterized in that: the rhizobia in step S11 is selected from one of rhizobium leguminosarum, rhizobium meliloti and rhizobium baimaiense.

4. An SPC floor capable of adsorbing formaldehyde according to claim 2, characterized in that: the glucose derivative in step S11 is at least one of L-lactic acid, alkyl glycoside, malic acid, itaconic acid, and oxalic acid.

5. An SPC floor capable of adsorbing formaldehyde according to claim 1, characterized in that: the formaldehyde adsorption layer (5) is prepared from the following components in parts by weight:

6. an SPC floor capable of adsorbing formaldehyde according to claim 5, characterized in that: the palladium chloride solution is an ethylene glycol solution of palladium chloride with the mass concentration of 1.93-19.3 mmol/L.

7. An SPC floor capable of adsorbing formaldehyde according to claim 5, characterized in that: the sodium hydroxide solution is an ethylene glycol solution of sodium hydroxide with the mass concentration of 0.1-1.0 mmol/L.

8. An SPC floor capable of adsorbing formaldehyde according to claim 5, characterized in that: the preparation method of the formaldehyde adsorption layer (5) comprises the following steps:

s21, adding hydrochloric acid with the mass concentration of 8-12 mol/L into an ammonium molybdate solution with the mass concentration of 6-8 mol/L according to a proportion to prepare a molybdic acid solution; then adding 6-8 mol/L sodium borohydride solution into molybdic acid solution to generate H_xMoO₃Sol;

s22 placing the nano titanium dioxide in H_xMoO₃Dissolving in sol; and the ultrasonic oscillation is uniform; then evaporating the solution to dryness at 90-100 ℃, and then drying in vacuum at 100-120 ℃ for 0.5-1 hour to obtain H_xMoO₃Nano titanium dioxide;

s23 mixing the glycol solution of palladium chloride and the glycol solution of sodium hydroxide to form a mixed solution, and then H_xMoO₃Dispersing nano titanium dioxide in the mixed solution, and introducing N₂Heating and refluxing for 6-8 hours at 100-120 ℃; filtering, washing and drying to obtain a formaldehyde remover;

s24, wetting a formaldehyde remover in a container by using ethanol, adding 50-70% of polytetrafluoroethylene emulsion into the container, wherein the mass ratio of the formaldehyde remover to polytetrafluoroethylene is 4-5: 1, adding ethanol into the container containing the formaldehyde remover and polytetrafluoroethylene solution, and vibrating uniformly in ultrasonic waves to obtain a formaldehyde remover coating;

s25, spraying the formaldehyde remover slurry on the melamine impregnated paper layer (4) of the SPC floor, and drying at room temperature to obtain the formaldehyde adsorption layer (5) of the SPC floor.

Technical Field

The invention relates to the technical field of composite floors, in particular to an SPC floor capable of adsorbing formaldehyde.

Background

An SPC (Stone Plastic Composite) floor is a novel environment-friendly floor and has the advantages of zero formaldehyde, mildew resistance, moisture resistance, fire resistance, insect resistance, simple installation and the like. The existing SPC floor structure comprises a bamboo charcoal base material layer, a color film layer and a wear-resistant layer which are sequentially arranged from bottom to top, wherein the bamboo charcoal base material layer, the color film layer and the wear-resistant layer are formed by pressing with embossing rollers, and the floor surface comprises a color film made of PVC and the wear-resistant layer made of PVC.

When people are in an environment with high formaldehyde concentration, uncomfortable symptoms can occur to eyes, nasal cavities and respiratory tracts, and the health of the people is often damaged. In daily life, formaldehyde is a healthy big killer, is a well-known allergy source, and is the second highest on the toxic chemical control list in China. According to the actual measurement found by national health administration of China, if the concentration of formaldehyde in air in the living room of people is more than 0.08mg/m³The concentration of formaldehyde in the air of public activity places is more than 0.12mg/m³Eyes or smell of people can already feel the stimulation of formaldehyde, and if the people are in an environment with excessive formaldehyde for a long time, certain influence and damage can be caused to the health of the human body. The effects of formaldehyde on human health mainly include abnormal smell and sink, irritation, allergy, lung dysfunction, liver dysfunction, immune dysfunction, central nervous system influence, and damage to intracellular genetic material, which is suspected carcinogen.

Patent application CN102116079A discloses a formaldehyde-free solid wood composite floor and a manufacturing method thereof, wherein the formaldehyde-free solid wood composite floor is formed by compounding a plurality of layers of wood veneers through a formaldehyde-free adhesive film, and the main component of the adhesive film is polymer resin. Although the formaldehyde-free glue is in line with environmental protection, the formaldehyde-free glue has poor service performance and higher cost, and the formaldehyde of the wood cannot be solved, so that the market share of the existing formaldehyde-free glue composite floor is low.

Chinese patent CN208310086U discloses a photocatalyst formaldehyde-purifying floor, which is characterized in that a photocatalyst layer is arranged between a decorative layer and a wear-resistant layer of the floor, so that the functions of sterilization, deodorization, mildew prevention, pollution prevention, self-cleaning and air purification are conveniently achieved; chinese patent CN208310086U discloses a photocatalyst formaldehyde hunting floor, wherein a round block of the photocatalyst formaldehyde hunting floor is coated with a silver ion antibacterial coating, so that the photocatalyst formaldehyde hunting floor has the functions of bacteriostasis and antibiosis while removing formaldehyde, and the air purification efficiency is greatly improved; chinese patent CN201818015U discloses an aldehyde-removing floor, wherein the joint at the upper part of the tongue and groove of the floor is generally assembled tightly, especially the floor with waterproof wax layer on the tongue and groove has a tighter joint, so most of the harmful gas emitted from the tongue and groove is emitted to the lower part of the floor, and finally to the expansion joint around the floor and wall, and finally emitted to the indoor, therefore, the aldehyde-removing layer on the back of the floor can contact with the harmful gas in large area, so as to decompose and/or adsorb the harmful gas, and achieve the purpose of removing aldehyde well.

Therefore, most of floors capable of adsorbing or decomposing formaldehyde in the prior art are utility model patents, the improvement points are more in the floor structure, the common idea is that the coating capable of removing formaldehyde is added into the floor, but the components for removing the formaldehyde coating are not disclosed, and the proportion among the components is not disclosed, so that the using effect of the formaldehyde-removing floor in shape, color and luster can not be quantized, and the scientificity and the rigor of the floor can not be studied.

Disclosure of Invention

The invention aims to provide an SPC floor capable of adsorbing formaldehyde, and the current advanced technology for removing formaldehyde utilizes nano materials, namely photocatalyst, titanium dioxide, and utilizes ultraviolet rays in light and formaldehyde to perform chemical reaction to generate carbon dioxide and water, and two conditions are needed: firstly, sufficient ultraviolet rays and secondly, the diameter of the titanium dioxide is small enough to attract the formaldehyde molecules to combine. The problems can be well solved by combining the SPC floor board with the SPC floor board, and the technical scheme of the invention is as follows:

the utility model provides a can adsorb SPC floor of formaldehyde, the supreme bamboo charcoal substrate layer, various rete, wearing layer that has set gradually is down followed to SPC floor structure, and bamboo charcoal substrate layer, various rete and wearing layer adopt embossing roll suppression shaping, various rete and wearing layer comprise the PVC material, its characterized in that: the bamboo charcoal base material layer contains 6-8 wt% of bamboo charcoal powder, a melamine impregnated paper layer is hot-pressed on the bottom surface of the wear-resistant layer and is prepared from a bacterial cellulose membrane, a formaldehyde adsorption layer with the thickness of 0.8-1.2 mm is further sprayed on the melamine impregnated paper layer, and the formaldehyde adsorption layer is prepared from hydrochloric acid, ammonium molybdate, potassium borohydride, nano titanium dioxide, palladium chloride, sodium hydroxide and polytetrafluoroethylene.

Preferably, the preparation method of the melamine-impregnated paper used for the melamine-impregnated paper layer is as follows:

s11 preparation of bacterial cellulose membranes: adding rhizobia bacteria or sarcina bacteria into a culture medium which takes glucose derivatives as a carbon source and takes nitrate or ammonium salt as a nitrogen source, fermenting in a reaction kettle to prepare a bacterial cellulose wet film, soaking the bacterial cellulose wet film in an alkali solution, and washing with deionized water to make the pH value of the bacterial cellulose wet film neutral for later use;

s12 preparation of high strength impregnation base paper: cutting the neutral bacterial cellulose wet film prepared in the step S11 into blocks, mixing the blocks with water according to the weight ratio of 1: 6-9, mechanically decomposing the blocks in a standard fiber dissociator at the rotating speed of 12000-13000 rmp to prepare bacterial cellulose suspension, uniformly mixing the suspension with paper pulp according to the weight ratio of 5-8%, and then pressing and drying the mixture to prepare high-strength impregnated base paper;

s13 softening of melamine resin: modifying melamine resin by using alkyd resin or thiourea, adding 3-4 wt% of isocyanate, and quickly and uniformly stirring to obtain a softened melamine resin impregnation solution;

s14 preparation of melamine impregnated paper: and (4) filling the softened melamine resin impregnation liquid prepared in the step (S13) into an impregnator, impregnating the high-strength impregnated base paper prepared in the step (S12) into the softened melamine resin, drying to prepare the polycyanurate impregnated paper, and storing in a special warehouse with constant temperature and constant humidity.

Preferably, the rhizobia in step S11 is selected from one of rhizobium leguminosarum, rhizobium meliloti and rhizobium baimaiense.

Preferably, the glucose derivative in step S11 is at least one of L-lactic acid, alkyl glycoside, malic acid, itaconic acid and oxalic acid.

Preferably, the formaldehyde adsorption layer is prepared from the following components in parts by weight:

preferably, the palladium chloride solution is an ethylene glycol solution of palladium chloride with the mass concentration of 1.93-19.3 mmol/L.

Preferably, the sodium hydroxide solution is an ethylene glycol solution of sodium hydroxide with the mass concentration of 0.1-1.0 mmol/L.

Preferably, the preparation method of the formaldehyde adsorption layer is as follows:

s21, adding hydrochloric acid with the mass concentration of 8-12 mol/L into an ammonium molybdate solution with the mass concentration of 6-8 mol/L according to a proportion to prepare a molybdic acid solution; then adding 6-8 mol/L sodium borohydride solution into molybdic acid solution to generate H_xMoO₃Sol;

s22 placing the nano titanium dioxide in H_xMoO₃Dissolving in sol; and the ultrasonic oscillation is uniform; then evaporating the solution to dryness at 90-100 ℃, and then drying in vacuum at 100-120 ℃ for 0.5-1 hour to obtain H_xMoO₃Nano titanium dioxide;

s23 mixing the glycol solution of palladium chloride and the glycol solution of sodium hydroxide to form a mixed solution, and then H_xMoO₃Dispersing nano titanium dioxide in the mixed solution, and introducing N₂Heating and refluxing for 6-8 hours at 100-120 ℃; filtering, washing and drying to obtain a formaldehyde remover;

s24, wetting a formaldehyde remover in a container by using ethanol, adding 50-70% of polytetrafluoroethylene emulsion into the container, wherein the mass ratio of the formaldehyde remover to polytetrafluoroethylene is 4-5: 1, adding ethanol into the container containing the formaldehyde remover and polytetrafluoroethylene solution, and vibrating uniformly in ultrasonic waves to obtain a formaldehyde remover coating;

s25, spraying the formaldehyde remover slurry on the melamine impregnated paper layer of the SPC floor, and drying at room temperature to obtain the formaldehyde adsorption layer of the SPC floor.

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

1. according to the SPC floor capable of adsorbing formaldehyde, 6-8 wt% of bamboo charcoal powder is added to the bamboo charcoal base material layer of the SPC floor, so that the SPC floor has good antibacterial property, can further adsorb harmful substances in air, purifies air, and is green and environment-friendly.

2. The SPC floor capable of adsorbing formaldehyde is characterized in that a formaldehyde adsorption layer with the thickness of 0.8-1.2 mm is further sprayed on a melamine impregnated paper layer of the SPC floor, the formaldehyde adsorption layer is prepared from hydrochloric acid, ammonium molybdate, potassium borohydride, nano titanium dioxide, palladium chloride, sodium hydroxide and polytetrafluoroethylene, the nano titanium dioxide is adopted as a material mainly adsorbing formaldehyde in a formaldehyde adsorption layer coating, the titanium dioxide can generate chemical reaction with ultraviolet rays in light and formaldehyde to generate carbon dioxide and water, and the titanium dioxide is a metal oxide and is difficult to dissolve in a certain solvent Hydrochloric acid, even boiling in aqua regia, has unchanged weight and performance, so that the prepared SPC has excellent stress resistance, the floor has a large installation area, the effect of adsorbing formaldehyde is better than that of adsorbing other formaldehyde products, the SPC floor can adsorb formaldehyde gas released by other furniture while not generating formaldehyde, and the floor is healthy and environment-friendly.

Drawings

FIG. 1 is a schematic structural view of an SPC floor according to the present invention;

FIG. 2 is a graph of the removal of formaldehyde over time for SPC flooring of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.