CN112177277A - V-SPC stone plastic floor and preparation method thereof - Google Patents

Abstract

The invention discloses a V-SPC stone-plastic floor and a preparation method thereof, relates to the field of floor processing, and aims to provide the V-SPC stone-plastic floor and the preparation method thereof so as to solve the problems of wear resistance, skid resistance, high hardness, short service life and easy deformation of the conventional floor. The V-SPC stone plastic floor comprises: a back pad; a substrate layer disposed on the back pad; the wood grain layer is arranged on the base material layer; and the UV paint layer is arranged on the wood grain layer. The invention has the advantages of environmental protection, water resistance, moisture resistance, moth resistance, antibiosis, mildew resistance, fire resistance, flame retardance, super skid resistance, high strength, recyclability, heat conduction, heat preservation, stable physical performance, simple installation, convenient construction, convenient maintenance and the like.

Description

V-SPC stone plastic floor and preparation method thereof

Technical Field

The invention relates to the technical field of floor processing, in particular to a V-SPC stone plastic floor and a preparation method thereof.

Background

With the continuous improvement of living standard of people, people have higher and higher requirements on home decoration materials, especially floor materials. Not only is it required to be environment-friendly and formaldehyde-free, but also it is required to be wear-resistant, anti-skid and beautiful. At present, the existing floors comprise solid wood floors, composite floors and the like, the floors generally have the defects of easy deformation, non-skid, non-wear resistance, short service life and the like, meanwhile, fillers can be added in the preparation process of the existing floors, the added fillers can increase the density of the floors, the hardness of the floors is increased, the toughness is reduced, the edges of the floors are easy to become brittle and crack, and the condition that formaldehyde exceeds the standard exists in part of the floors, so that the floors can not meet the requirements of home decoration of people.

Disclosure of Invention

The invention aims to provide a V-SPC stone plastic floor and a preparation method thereof, and aims to solve the problems of wear resistance, skid resistance, high hardness, short service life and easy deformation of the conventional floor.

The invention relates to a V-SPC stone plastic floor, which comprises:

a back pad;

a substrate layer disposed on the back pad;

the wood grain layer is arranged on the base material layer;

and the UV paint layer is arranged on the wood grain layer.

In a preferred embodiment, the material of the back pad is PVC or PU.

As a preferred embodiment, the substrate layer comprises the following components in parts by weight:

60-80 parts of dolomite particles;

18-25 parts of PVC;

7-12 parts of small materials.

As a preferred embodiment, the substrate layer comprises the following components in parts by weight:

70 parts of dolomite particles;

21 parts of PVC;

and 9 parts of small materials.

As a preferred embodiment, the small materials comprise the following components in parts by weight:

5-15 parts of liquid calcium-zinc composite stabilizer;

5-10 parts of a stone-plastic lubricant;

3-5 parts of microcrystalline cellulose;

12-18 parts of polyacrylate type hyperdispersant;

1.5-5 parts of aromatic amine antioxidant.

As a preferred embodiment, the small materials comprise the following components in parts by weight:

13 parts of liquid calcium-zinc composite stabilizer;

8 parts of a stone-plastic lubricant;

4 parts of microcrystalline cellulose;

15 parts of polyacrylate type hyperdispersant;

3 parts of aromatic amine antioxidant.

As a preferred embodiment, the thickness of the substrate layer is 4 to 6 mm.

In a preferred embodiment, the thickness of the wood grain layer is 0.8 to 1.2 mm.

As a preferred embodiment, the thickness of the UV lacquer layer is 0.01-0.03 mm.

The invention relates to a preparation method of a V-SPC stone plastic floor, which comprises the following steps:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles to 400-450 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) cutting;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting;

step seven, sanding;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting;

and thirteen steps of packaging.

The invention has the beneficial effects that:

the method is green, ecological and environment-friendly: does not contain harmful substances such as heavy metal, formaldehyde and the like, has high environmental protection property, and is a real zero-formaldehyde product.

② water proof, moisture proof, moth proof, antibacterial and mildew proof.

Third, fire prevention and flame retardation: the magnesium oxide in the dolomite is a special-grade fireproof flame-retardant material, and the fireproof grade of the special-grade fireproof flame-retardant material exceeds that of a common floor.

Fourthly, super-strong wear resistance: the abrasion resistant revolution can reach more than 4000 revolutions.

Super strong skid resistance and high strength.

Sixthly, the product can be recycled.

And (c) conducting heat and keeping warm: the heat-conducting property is good, and the floor heating is stable in use.

The physical properties are stable: the dolomite is a natural ore raw material containing magnesium oxide, the proportion of the magnesium oxide is 22.8 percent, the dolomite is the super-grade quality of the natural magnesium oxide, magnesium metal is the most stable structural metal in the world, the magnesium metal can play a role in improving the floor structure, and the stability is stronger.

Ninthly, the installation is simple, the construction is convenient and fast, and the maintenance is convenient.

Constructing a healthy home in the red: the dolomite can release magnesium ions which are necessary trace elements for human bodies.

Drawings

FIG. 1 is a process for preparing V-SPC stone plastic floor.

Detailed Description

The invention relates to a V-SPC stone plastic floor, which mainly comprises: a back pad; a substrate layer; a wood grain layer; and (5) a UV paint layer. Wherein, the substrate layer is arranged on the back cushion; the wood grain layer is arranged on the base material layer; the UV paint layer is arranged on the wood grain layer.

Preferably, the material of the back cushion is PVC or PU.

Preferably, the base material layer comprises the following components in parts by weight:

60-80 parts of dolomite particles;

18-25 parts of PVC;

7-12 parts of small materials.

More preferably, the base material layer comprises the following components in parts by weight:

70 parts of dolomite particles;

21 parts of PVC;

and 9 parts of small materials.

Preferably, the small materials comprise the following components in parts by weight:

5-15 parts of liquid calcium-zinc composite stabilizer;

5-10 parts of a stone-plastic lubricant;

3-5 parts of microcrystalline cellulose;

12-18 parts of polyacrylate type hyperdispersant;

1.5-5 parts of aromatic amine antioxidant.

More preferably, the small materials comprise the following components in parts by weight:

13 parts of liquid calcium-zinc composite stabilizer;

8 parts of a stone-plastic lubricant;

4 parts of microcrystalline cellulose;

15 parts of polyacrylate type hyperdispersant;

3 parts of aromatic amine antioxidant.

Preferably, the thickness of the substrate layer is 4 to 6 mm. More preferably, the substrate layer has a thickness of 5 mm.

Preferably, the thickness of the wood grain layer is 0.8-1.2 mm. More preferably, the thickness of the wood grain layer is 1 mm.

Preferably, the thickness of the UV paint layer is 0.01-0.03 mm. More preferably, the thickness of the UV lacquer layer is 0.02 mm.

As shown in FIG. 1, the preparation method of the V-SPC stone plastic floor mainly comprises the following steps:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles to 400-450 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) dividing: cutting the plate into pieces with length of 1218mm and width of 170mm according to the production requirement;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting: screening out the defective floor;

seventhly, sanding: sanding the bottom surface of the base material layer by using a sander;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification: trimming floor edge burrs and the like;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting: screening out defective floors, and then grading the floors into A grade, B grade and the like;

and thirteen steps of packaging.

In the invention, the functions of the components are as follows:

the function of the back cushion is as follows: play a role in buffering and reduce the hardness.

Function of the base material layer: the main framework of the floor plays a role in supporting the whole floor.

The wood grain layer has the following functions: the wood floor board is used for building the texture of solid wood, improving the visual effect and the grade of the floor board and has a certain cooling isolation effect.

Function of the UV lacquer layer: the UV paint film is of a three-dimensional structure, and has the advantages of high hardness, good wear resistance, good transparency, scratch resistance and friction resistance.

Dolomite: the dolomite crystal belongs to trigonal crystalThe carbonate mineral contains CaMg (CO) as chemical component₃)₂. There are often similarities (instead of magnesium) of iron, manganese, etc. When the number of iron or manganese atoms exceeds that of magnesium, it is called iron dolomite or manganese dolomite. Trigonal system, crystal is rhombohedral, crystal face is often bent into saddle shape, and lamella twinning is common. The aggregates are generally in the form of particles. Pure white; gray in color with iron; and brownish after weathering. Glass gloss. Is the main mineral constituting dolomite. The dolostone with marine sedimentary origin is often produced in interbed with siderite and limestone. In lake-phase sediments, dolomite is symbiotic with gypsum, anhydrite, halite, sylvite, and the like.

The dolomite can release magnesium ions which are necessary microelements for human bodies, and healthy houses are built for people. Dolomite does not contain harmful substances such as heavy metal, formaldehyde and the like, has high environmental protection property and is a real formaldehyde-free product. The magnesium oxide in the dolomite is a special-grade fireproof flame-retardant material, and the fireproof grade of the special-grade fireproof flame-retardant material exceeds that of the existing common floor. The dolomite is a natural ore raw material containing magnesium oxide, the proportion of the magnesium oxide is 22.8 percent, the dolomite is the super-grade quality of the natural magnesium oxide, magnesium metal is the most stable structural metal in the world, the magnesium metal can play a role in improving the floor structure, the stability is stronger, and the physical performance is more stable.

Liquid calcium-zinc composite stabilizer: the PVC composite stabilizer has a thermal stabilization effect in the processing of polyvinyl chloride. Pure polyvinyl chloride resins are extremely heat sensitive and undergo slight thermal decomposition when heated to temperatures above 90 c. When the temperature reaches 120 ℃, obvious thermal decomposition reaction occurs, so that the color of the polyvinyl chloride resin is gradually deepened. The addition of heat stabilizer is an effective method for improving the heat stability of PVC. It has the following functions: firstly, active and unstable substituent groups are replaced; secondly, HCL released in the PVC processing process is absorbed and neutralized, and the automatic catalytic degradation of HCL is eliminated; thirdly, metal ions and other harmful impurities which play a catalytic role in degradation are neutralized or passivated; fourthly, the continuous growth of unsaturated bonds can be blocked through various chemical reactions, and degradation coloring is inhibited.

A stone-plastic lubricant: the processing fluidity of the floor can be improved, the appearance quality of the floor is improved, the physical performance of the floor is ensured, the friction force between a high molecular compound and processing machinery is reduced, the abrasion of equipment is reduced, and the extrusion molding can be smoothly carried out. The lubricant for the stone is multifunctional, in order to give the processing equipment the best operating characteristics, to increase the yield and to improve the quality of the product: 1. polymer/polymer intermolecular interactions; 2. the plasticizing effect is accelerated; 3. reducing the melt viscosity; 4. the torque and the energy consumption are reduced; 5. polymer/filler interfacial interactions; 6. promoting the dispersion of stone powder or natural fiber filler; 7. wetting of the packing is facilitated; 8. lubricating the filled polymer with the heated or cooled metal interface; 9. the demolding performance of the material in the extrusion barrel and on the die surface is improved; 10. reducing friction and wear.

Microcrystalline cellulose: as an anticaking agent, the dolomite dust can be prevented from aggregating and caking.

Polyacrylate type hyperdispersant: the polymer type hyperdispersant has the following functions: multi-point anchoring is formed on the particle surface, so that the adsorption fastness is improved, and desorption is not easy to occur; the solvating chain is longer than the lipophilic group of the traditional dispersant, and can play an effective space stabilizing role; forming a very weak capsule, being easy to move, being capable of rapidly moving to the surface of the particles and playing a role in wetting protection; and a lipophilic film cannot be introduced on the surface of the particles, so that the application performance of the final product is not influenced.

Aromatic amine antioxidant: can prevent the polymer from aging and prolong the service life of the polymer.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

EXAMPLE 1V-preparation of SPC Stone Plastic flooring

The V-SPC stone-plastic floor, back mat of this example; a substrate layer disposed on the back pad; the wood grain layer is arranged on the base material layer; and the UV paint layer is arranged on the wood grain layer.

The base material layer comprises the following components in parts by weight: 70 parts of dolomite particles; 21 parts of PVC; and 9 parts of small materials.

The small materials comprise the following components in parts by weight: 13 parts of liquid calcium-zinc composite stabilizer; 8 parts of a stone-plastic lubricant; 4 parts of microcrystalline cellulose; 15 parts of polyacrylate type hyperdispersant; 3 parts of aromatic amine antioxidant.

The V-SPC stone plastic floor of this example was prepared as follows:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles to 430 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) dividing: cutting the plate into pieces with length of 1218mm and width of 170mm according to the production requirement;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting: screening out the defective floor;

seventhly, sanding: sanding the bottom surface of the base material layer by using a sander;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification: trimming floor edge burrs and the like;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting: screening out defective floors, and then grading the floors into A grade, B grade and the like;

and thirteen steps of packaging.

EXAMPLE 2V-preparation of SPC Stone Plastic flooring

The V-SPC stone-plastic floor, back mat of this example; a substrate layer disposed on the back pad; the wood grain layer is arranged on the base material layer; and the UV paint layer is arranged on the wood grain layer.

The base material layer comprises the following components in parts by weight: 60 parts of dolomite particles; 25 parts of PVC; and 7 parts of small materials.

The small materials comprise the following components in parts by weight: 15 parts of liquid calcium-zinc composite stabilizer; 5 parts of a stone-plastic lubricant; 5 parts of microcrystalline cellulose; 12 parts of polyacrylate type hyperdispersant; 1.5 parts of aromatic amine antioxidant.

The V-SPC stone plastic floor of this example was prepared as follows:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles into 400 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) dividing: cutting the plate into pieces with length of 1218mm and width of 170mm according to the production requirement;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting: screening out the defective floor;

seventhly, sanding: sanding the bottom surface of the base material layer by using a sander;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification: trimming floor edge burrs and the like;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting: screening out defective floors, and then grading the floors into A grade, B grade and the like;

and thirteen steps of packaging.

EXAMPLE 3V-preparation of SPC Stone Plastic flooring

The V-SPC stone-plastic floor, back mat of this example; a substrate layer disposed on the back pad; the wood grain layer is arranged on the base material layer; and the UV paint layer is arranged on the wood grain layer.

The base material layer comprises the following components in parts by weight: 80 parts of dolomite particles; 18 parts of PVC; and 12 parts of small materials.

The small materials comprise the following components in parts by weight: 5 parts of liquid calcium-zinc composite stabilizer; 10 parts of a stone-plastic lubricant; 3 parts of microcrystalline cellulose; 18 parts of polyacrylate type hyperdispersant; 5 parts of aromatic amine antioxidant.

The V-SPC stone plastic floor of this example was prepared as follows:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles to 450 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) dividing: cutting the plate into pieces with length of 1218mm and width of 170mm according to the production requirement;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting: screening out the defective floor;

seventhly, sanding: sanding the bottom surface of the base material layer by using a sander;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification: trimming floor edge burrs and the like;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting: screening out defective floors, and then grading the floors into A grade, B grade and the like;

and thirteen steps of packaging.

Test example 1 Performance test

The V-SPC stone plastic floor obtained in the examples 1 to 3 and the existing ordinary floor were subjected to performance tests, and the test results are as follows.

Firstly, testing items: testing the foot wheelchair.

1. The test method comprises the following steps: EN 425: 2002.

2. and (3) testing environment: the samples were tested at a temperature of (23. + -. 2) ° C and relative humidity of (50. + -. 5)% for at least 24 hours.

3. And (3) testing conditions are as follows:

testing at a temperature range of 18-25 ℃;

load weight: 90 kg;

rotating wheel: w type;

rotating platform speed: 20 revolutions per minute;

rotating wheel speed: 50 revolutions per minute;

total number of revolutions: 25000 turns;

sample installation: suspension installation and lock catch connection.

4. And (3) testing results:

II, testing items: and (3) wear resistance.

1. The test method comprises the following steps: EN13329:2016, Annex E.

2. And (3) testing environment: the samples were tested at a temperature of (23. + -. 2) ° C and relative humidity of (50. + -. 5)% for at least 24 hours.

3. And (3) testing conditions are as follows:

rotation frequency: 60 revolutions per minute;

friction material: taber S-42 sandpaper strips;

wheel load: 500 g;

detecting the wear resistance of the sample after every 100 revolutions;

the abrasive paper strips were changed after every 200 r.

4. And (3) testing results:

(1) the first wear value (revolutions) is the presence of at least 0.6 square mm wear points on the two sectors and at least 0.6 square mm visible wear points on the third sector area.

(2) "r" is an abbreviation for rotation.

Thirdly, testing items: impact resistance (large spheres).

1. The test method comprises the following steps: EN13329:2006+ A1: 2008, Annex F.

2. And (3) testing environment: the samples were tested at a temperature of (23. + -. 2) ° C and relative humidity of (50. + -. 5)% for at least 72 hours.

3. And (3) testing conditions are as follows:

an impact object: a steel ball;

mass of the impact: 324 g;

diameter of impact: 42.8 mm;

height of falling: 1800 mm.

4. And (3) testing results:

fourthly, testing items: and (5) residual indentation.

1. The test method comprises the following steps: EN ISO: 24343-1:2002.

2. And (3) testing environment: the samples were tested at a temperature of (23. + -. 2) ° C and relative humidity of (50. + -. 5)% for at least 24 hours.

3. And (3) testing conditions are as follows:

pressing: testing by using a steel column press with a slightly round flat base;

diameter of a press: 11.3 mm;

total load: 500N;

pressing time: 150 minutes;

the recovery time is as follows: 150 minutes;

4. and (3) testing results:

residual indentation	Results (mm)
		Example 1	0.02
Example 2	0.02
		Example 3	0.02
Mean value of	0.02

Fifthly, testing items: and (4) stain resistance.

1. The test method comprises the following steps: EN 16511:2014& EN438-2:2015, section 26.

2. And (3) testing environment: the samples were tested at a temperature of (23. + -. 2) ° C and relative humidity of (50. + -. 5)% for at least 24 hours.

3. And (3) testing results:

group of	Contaminants	Contact time	Visual grade
				1	Water (W)	10 minutes	5
1	Acetone (II)	10 minutes	5
				1	Cleaning agent	10 hours	5
2	Coffee (80 degree left and right)	16 minutes	5
				3	Sodium hydroxide (25% strength solution)	10 minutes	5
3	Hydrogen peroxide (30% strength solution)	10 minutes	5
				3	Carbon block and paraffin oil	10 minutes	5

See table below for visual rating.

Grade of score	Description of the invention
		5	Is not visible
4	Is slightly visible
		3	Moderate degree of visibility
2	Is obviously visible
		1	Is very visible

And sixthly, testing items: and (5) the lock catch strength.

1. The test method comprises the following steps: ISO24334: 2014.

2. And (3) testing environment: the sample was placed at a temperature of (23. + -. 2). degree.C. and a relative humidity of (50. + -. 5)% to continuously measure the strength at a measuring rate of 0.5mm per minute.

3. And (3) testing results:

the long edge latch strength is shown in the table below.

The short edge latch strengths are shown in the table below.

Parameter(s)	Mean value of
		Maximum catch tension fmax (N)	503
Specific lock catch strength (kN/m)	3.2
		Lock catch strength of 0.2mm opening junction	475
Specific 0.2mm opening junction latch strength	3.2

Seventhly, testing items: dimensional stability and warpage.

1. The test method comprises the following steps: EN ISO23999:2012

2. And (3) testing environment: the samples were placed at a temperature of 23 ℃ and a relative humidity of 50% for a duration of 24 hours.

3. Measuring the first length and the warpage, and testing conditions are as follows:

temperature: 80 ℃ duration: 6 hours

And (3) measuring again:

temperature: relative humidity at 23 ℃: 50% duration: 24 hours

4. The final length and warpage measurements are shown in the table below.

Wherein the dimensional stability (first measured length-final measured length) is 100/first measured length, where the average is indicated to be closest to 0.05%; negative values indicate extension and positive values indicate contraction; final-initial determination of warpage, the average value is shown here to be closest to 0.5 mm.

Eighthly, testing items: soluble heavy metal 8 item.

And (3) testing results: not detected out

Ninthly, testing items: o-benzene plasticizer 7P.

And (3) testing results: not detected out

The invention discloses a V-SPC stone plastic floor and a preparation method thereof, and a person skilled in the art can appropriately improve process parameters by referring to the content. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that the technology can be practiced and applied by modifying or appropriately combining the products described herein without departing from the spirit and scope of the invention.

Claims (10)

1. A V-SPC stone-plastic flooring, comprising:

a back pad;

a substrate layer disposed on the back pad;

the wood grain layer is arranged on the base material layer;

and the UV paint layer is arranged on the wood grain layer.

2. The V-SPC stone-plastic floor as claimed in claim 1, wherein the material of the back cushion is PVC or PU.

3. The V-SPC stone-plastic floor as claimed in claim 1, wherein the substrate layer comprises the following components in parts by weight:

60-80 parts of dolomite particles;

18-25 parts of PVC;

7-12 parts of small materials.

4. The V-SPC stone-plastic floor as claimed in claim 3, wherein the substrate layer comprises the following components in parts by weight:

70 parts of dolomite particles;

21 parts of PVC;

and 9 parts of small materials.

5. The V-SPC stone-plastic floor as claimed in claim 4, wherein the small materials comprise the following components in parts by weight:

5-15 parts of liquid calcium-zinc composite stabilizer;

5-10 parts of a stone-plastic lubricant;

3-5 parts of microcrystalline cellulose;

12-18 parts of polyacrylate type hyperdispersant;

1.5-5 parts of aromatic amine antioxidant.

6. The V-SPC stone-plastic floor as claimed in claim 5, wherein the small materials comprise the following components in parts by weight:

13 parts of liquid calcium-zinc composite stabilizer;

8 parts of a stone-plastic lubricant;

4 parts of microcrystalline cellulose;

15 parts of polyacrylate type hyperdispersant;

3 parts of aromatic amine antioxidant.

7. V-SPC stone floor according to claim 1, characterized in that the substrate layer has a thickness of 4-6 mm.

8. V-SPC stone floor according to claim 1, characterized in that the thickness of the wood-grain layer is 0.8-1.2 mm.

9. V-SPC stone floor according to claim 1, characterized in that the thickness of the UV lacquer layer is 0.01-0.03 mm.

10. Method for preparing a V-SPC stone floor as claimed in claim 1, comprising the steps of:

step one, preparing a wood grain layer;

step two, preparation of a base material layer

(1) Extrusion molding

Crushing dolomite particles to 400-450 meshes, heating the dolomite particles and the raw materials to 130 ℃, mixing and stirring uniformly, reducing the temperature of the mixture to 50 ℃, carrying out cold mixing, and finally carrying out extrusion molding through an extruder;

(2) preserving the health for 48 hours at the temperature of 18 ℃;

(3) cutting;

(4) sanding to fix the thickness;

thirdly, the wood grain layer and the base material layer are assembled and pressed;

step four, curing for 48 hours at the temperature of 18 ℃;

step five, fixing the length;

step six, sorting;

step seven, sanding;

step eight, slotting and simultaneously performing electrostatic dust removal;

step nine, fine modification;

step ten, coating UV paint;

step eleven, heating the back cushion raw material to a molten state and then adhering the back cushion raw material to the bottom surface of the base material layer;

step twelve, sorting;

and thirteen steps of packaging.

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