CN112250962A - PVC (polyvinyl chloride) homogeneous transparent wood grain plastic floor and production process thereof - Google Patents
PVC (polyvinyl chloride) homogeneous transparent wood grain plastic floor and production process thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The application relates to a PVC homogeneous transparent wood grain plastic floor and a production process thereof, wherein the plastic floor comprises the following raw materials in parts by weight: 90-110 parts of PVC, 20-30 parts of dioctyl terephthalate, 2-8 parts of calcium-zinc stabilizer, 50-70 parts of calcium carbonate, 10-20 parts of zinc stannate and 3-7 parts of polyethylene wax; the production process comprises the following steps: the raw materials are mixed and stirred for 5-10min at the temperature of 24-30 ℃, then mixed, granulated and extruded at the temperature of 148-152 ℃, then the sheet is pulled at the temperature of 168-172 ℃, and finally the raw materials are banburied and extruded at the temperature of 168-172 ℃ to obtain the plastic floor.
Description
Technical Field
The application relates to the technical field of floor production and processing, in particular to a PVC (polyvinyl chloride) homogeneous transparent wood grain plastic floor and a production process thereof.
Background
The wood floor is a ground decoration material which is processed and processed by natural wood through the technical processes of material preparation, drying, health preservation, rough machining, sorting, plate preparation, sanding, coating and the like. The wood floor is popular with consumers because of the beautiful natural wood pattern, and is widely applied to the laying of the ground.
However, the wood floor is made of raw wood, which is soft and low in strength, so that the wood floor has the defects of poor impact resistance and the like, and the application range of the wood floor is limited.
Disclosure of Invention
In order to enable the floor to have higher impact resistance, wear resistance and flame retardance and have the patterns of raw wood, the application provides the PVC homogeneous transparent wood grain plastic floor and the production process thereof.
First aspect, the application provides a PVC homogeneity core wood grain plastic floor, adopts following technical scheme:
the PVC homogeneous transparent wood grain plastic floor comprises the following raw materials in parts by weight:
90-110 parts of PVC, 20-30 parts of dioctyl terephthalate, 2-8 parts of calcium-zinc stabilizer, 50-70 parts of calcium carbonate, 10-20 parts of zinc stannate and 3-7 parts of polyethylene wax.
Through adopting above-mentioned technical scheme, this application adopts PVC (polyvinyl chloride) as the base-material of homogeneity core wood grain plastic floor, PVC has high strength, nonflammable, resistant climate change and good stability, use the PVC of specific proportion scope as the base-material and compare with the natural timber that the timber apron used, can make the floor that makes have higher shock resistance, fire behaviour and wear resistance, and resistant dirt ability is better, need not frequent maintenance, difficult living worm and mould, can wide application in places that passenger flow volume is great such as hospital, asylum for the aged, place of sports, airport, railway station.
The dioctyl terephthalate (DOTP) adopted by the application is a plasticizer with excellent performance, has the characteristics of heat resistance, cold resistance, difficult volatilization, good flexibility and the like, and can be mixed with PVC according to a specific proportion to enhance the plasticity of the PVC, so that the flexibility is enhanced, the conversion rate is increased, and the compatibility with other components is better.
This application adopts the calcium zinc stabilizer and the PVC mixed use of specific proportion scope, can improve the stability of PVC course of working for PVC's plastify process is more stable, can improve the compatibility between PVC and other components in coordination according to specific proportion and dioctyl phthalate, improves the effect of PVC plastify, thereby makes the floor that makes have higher shock resistance, flame retardant property and wear resistance.
This application adopts specific proportion to mix collocation and use calcium carbonate, polyethylene wax to adopt specific proportion to mix with components such as PVC, because calcium carbonate, polyethylene wax have higher intensity and have good wear resistance, consequently can strengthen the shock resistance and the wear resistance on floor in coordination. The zinc stannate adopted by the application has good flame-retardant and smoke-suppression performances, and is non-toxic, safe and easy to use.
Meanwhile, the dioctyl terephthalate, the calcium-zinc stabilizer, the calcium carbonate, the zinc stannate and the polyethylene wax are mixed according to a specific proportion and are mixed with the PVC according to a specific proportion to prepare the floor, and the synergistic effect of the dioctyl terephthalate, the calcium-zinc stabilizer, the calcium carbonate, the zinc stannate and the polyethylene wax is fully exerted, so that the prepared floor has high impact resistance, wear resistance and flame retardance.
Preferably, the plastic floor comprises the following raw materials in parts by weight:
98-102 parts of PVC, 23-27 parts of dioctyl terephthalate, 4-6 parts of calcium-zinc stabilizer, 55-65 parts of calcium carbonate, 13-17 parts of zinc stannate and 4-6 parts of polyethylene wax.
By adopting the technical scheme, the PVC of specific proportion scope is adopted as the main substrate of floor in this application to use dioctyl terephthalate of specific proportion scope, calcium zinc stabilizer, calcium carbonate, zinc stannate, low molecular weight polyethylene and PVC to mix collocation and make the floor, full play's synergism between each component, further the shock resistance, wear resistance and the fire behaviour of floor have been strengthened, and combine specific proportion scope through specific component, make the resistant dirt ability of floor better, it is not need often to maintain, be difficult for living worm and go mildy, can wide application in places such as hospital, asylum for old age, place of sports, airport, railway station that passenger flow is great.
Preferably, the calcium carbonate is modified by the following method:
drying and crushing calcium carbonate at the temperature of 75-80 ℃, then uniformly mixing the calcium carbonate with stearic acid and ethanol at the temperature of 50-52 ℃, crushing and stirring for 5-8min at the rotating speed of 4680-4700r/min, and then drying at the temperature of 85-90 ℃ to obtain modified calcium carbonate, wherein the weight ratio of the calcium carbonate to the stearic acid to the ethanol is (50-52): (0.5-0.8): (49-52).
By adopting the technical scheme, stearic acid is used as a modifier in the proportion range, and calcium carbonate is modified under specific reaction conditions, so that the modified calcium carbonate has good dispersibility when being mixed with PVC and other components, has strong adhesive force, and enhances the interface acting force among the calcium carbonate, the PVC and other components, thereby enabling the modified calcium carbonate to be more firmly combined with the PVC and other components, fully playing a role in enhancing, and improving the impact resistance and wear resistance of the floor.
Preferably, the particle diameter of the modified calcium carbonate is 30 to 35 nm.
By adopting the technical scheme, the particle diameter of the modified calcium carbonate is controlled to be nano-scale, so that the modified calcium carbonate has good corrosion-resistant lubricating effect and has strong high-low temperature resistance and acid-base resistance.
Meanwhile, the particle diameter of the modified calcium carbonate is controlled within the specific range, so that the dispersibility of the modified calcium carbonate when the modified calcium carbonate is mixed with PVC and other components can be further improved, the reinforcing effect is fully realized, and the impact resistance and the wear resistance of the floor are improved; if the particle diameter of the modified calcium carbonate is too small, the effect of improving the impact resistance and the wear resistance of the floor cannot be achieved, and if the particle diameter of the modified calcium carbonate is too large, the compatibility degree of the modified calcium carbonate when the modified calcium carbonate is mixed with PVC and other components is reduced, so that the impact resistance and the wear resistance of the floor are also reduced.
Preferably, the raw materials further comprise 12-16 parts of nano magnesium hydroxide, 5-10 parts of aromatic calcium, 3-5 parts of thermoplastic starch and 4-6 parts of mullite powder by weight;
wherein, the thermoplastic starch is prepared by the following method:
drying starch at 90-95 ℃ for 4-5h, mixing with glycerol, and stirring and mixing at 80-85 ℃ and 1300-1400r/min for 10-15min to obtain thermoplastic starch, wherein the weight ratio of starch to glycerol is (3.0-3.2): 1.
by adopting the technical scheme, the nano magnesium hydroxide belongs to an inorganic flame retardant, the nano magnesium hydroxide, PVC and other components are mixed according to a specific proportion to prepare the floor, the nano magnesium hydroxide can be heated to desorb heat, and the metal oxide generated by reaction covers the surfaces of the PVC and other components and can isolate the transfer of heat and oxygen, so that the continuous combustion of the floor is prevented, the oxygen index of the floor is improved, and the flame retardant property of the floor is further improved by the cooperation of the nano magnesium hydroxide, the PVC and other components.
The calcium aromatic carbonate is the same as calcium carbonate, also belongs to an inorganic rigid particle, has stronger dispersibility and stability, and can fully disperse when being mixed with PVC and other components, and the calcium aromatic carbonate with a specific proportion is added into the raw materials used for the floor, so that the calcium aromatic carbonate and the components such as calcium carbonate, PVC, polyethylene wax and the like are matched and used according to a specific proportion, the synergistic effect among each other is fully exerted, and the impact resistance and the wear resistance of the floor are comprehensively improved.
According to the method, starch is dried firstly, moisture in the starch is removed fully, the possibility that the moisture in the starch influences the modification process is reduced, glycerin and the starch are mixed according to a specific proportion, thermoplastic starch is prepared under specific reaction conditions, meanwhile, the thermoplastic starch is added into raw materials used for the floor according to the specific proportion, the thermoplastic starch can be mixed with calcium carbonate, calcium aromatic acid, PVC and other components, and mutual synergistic effect is exerted, so that the floor has high impact resistance and wear resistance;
the plasticizing effect of the glycerin on the starch can be influenced by too high or too low ratio of the glycerin to the starch, so that the reinforcing effect of the thermoplastic starch on the floor is influenced, and the impact resistance and the wear resistance of the prepared floor can be reduced by too low or too high ratio of the thermoplastic starch.
The mullite powder has high strength, so that the mullite powder can be used together with components such as thermoplastic starch, calcium carbonate, calcium arylate, PVC and the like to synergistically improve the impact resistance and wear resistance of the floor.
Preferably, the nano magnesium hydroxide is modified by the following method:
uniformly mixing nano magnesium hydroxide and water to obtain a nano magnesium hydroxide suspension, uniformly mixing tannic acid and ferric chloride with water respectively to obtain a tannic acid solution and a ferric chloride solution, uniformly mixing the tannic acid solution and the nano magnesium hydroxide suspension, stirring for 5-10min, uniformly mixing the ferric chloride solution and a tannic acid-nano magnesium hydroxide mixed solution, stirring for 8-10min, filtering, washing, and drying at the temperature of 58-62 ℃ to obtain modified nano magnesium hydroxide, wherein the weight ratio of the nano magnesium hydroxide to the water is 1: (3-4), wherein the weight ratio of the tannic acid to the water is 1: (98-102), the weight ratio of ferric chloride to water is 1: (97-103).
By adopting the technical scheme, the tannin and the ferric chloride in a specific proportion are used as the modifier, and the nano magnesium hydroxide is modified under a specific reaction condition, so that the dispersity of the nano magnesium hydroxide when the nano magnesium hydroxide is mixed with PVC and other components is enhanced, the compatibility of the nano magnesium hydroxide with the PVC and other components is improved, the flame retardant property of the nano magnesium hydroxide can be fully exerted, and the impact resistance and the wear resistance of the floor are improved.
In a second aspect, the present application provides a production process of a PVC homogeneous transparent wood grain plastic floor, which adopts the following technical scheme:
a production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
mixing and stirring the raw materials at the temperature of 24-30 ℃ for 5-10min, then mixing, granulating and extruding at the temperature of 148-152 ℃, pulling the sheet at the temperature of 168-172 ℃ to obtain particles, then mixing, extruding and cutting the particles to obtain wafers, and finally banburying, extruding and forming at the temperature of 168-172 ℃ to obtain the plastic floor.
Preferably, the particles have a diameter size of 3 to 5 mm.
Preferably, the diameter size of the circular plate is 6-7 mm.
Preferably, the thickness of the plastic floor is 2-3 mm.
By adopting the technical scheme, all the raw materials are mixed and stirred firstly, so that all the raw materials are premixed firstly, then are melted, blended and extruded in a double-screw extruder under the specific temperature condition, and then are subjected to the technical processes of pulling, crushing, cutting, extrusion forming and the like under the specific temperature condition, the manufactured floor is a homogeneous transparent floor and has high impact resistance, wear resistance and flame resistance, and the manufactured floor can have patterns of natural wood through the specific technical process, so that the floor not only meets the favor of consumers on all the patterns of the wood floor at present, but also has high impact resistance, wear resistance and flame resistance.
The diameter of the crushed particles, the diameter of the cut round pieces and the thickness of the plastic floor after extrusion forming are strictly controlled within a specific range, so that the prepared homogeneous and transparent floor has high impact resistance, wear resistance and flame retardance, has patterns of natural wood, and is simple and quick to lay;
the diameter of the crushed particles, the diameter of the cut round pieces and the thickness of the plastic floor after extrusion forming are lower than or higher than a specific range, so that the homogeneous core effect of the prepared floor is reduced, the impact resistance, the wear resistance and the flame retardant property of the floor are reduced, and the prepared floor cannot present a good pattern effect of natural wood.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the plastic floor has higher impact resistance, wear resistance and flame retardant property due to the adoption of the raw materials mixed in a specific proportion range and the specific process conditions;
2. the plastic floor has all patterns of natural wood, can meet the favor of general consumers on wood floor patterns, does not need frequent maintenance, and is not easy to generate insects and mildew;
3. the plastic floor has high impact resistance, wear resistance and flame retardance, is simple and convenient to pave, has high stain resistance, and can be widely applied to places with large passenger flow.
Detailed Description
The present application will be described in further detail with reference to examples.
In the following preparations, examples and comparative examples:
PVC is available from Wang polymers, Zhejiang, Inc.;
dioctyl terephthalate was purchased from wuhanxin mobile-beneficial chemical company, ltd;
the calcium-zinc stabilizer is purchased from Zibo Xinguo New plastics materials Co;
the mullite powder is purchased from a nonmetallic material Limited of snow, province of Anhui province;
tannic acid was purchased from Shenzhen Lefu Biotech, Inc.
Preparation example 1
The thermoplastic starch is prepared by the following method:
drying 30g of starch for 4h at the temperature of 90 ℃, then mixing with 10g of glycerol, and stirring and mixing for 10min at the temperature of 80 ℃ and the rotating speed of 1300r/min to obtain the thermoplastic starch.
Preparation example 2
The thermoplastic starch is prepared by the following method:
drying 32g of starch at the temperature of 95 ℃ for 5h, mixing with 10g of glycerol, and stirring and mixing at the temperature of 85 ℃ and the rotating speed of 1400r/min for 15min to obtain the thermoplastic starch.
Example 1
A production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
mixing and stirring 90g of PVC, 30g of dioctyl terephthalate, 2g of calcium-zinc stabilizer, 70g of calcium carbonate, 10g of zinc stannate and 7g of polyethylene wax at the temperature of 24 ℃ for 5min, then putting the mixture into a double-screw extruder at the temperature of 148 ℃ for mixing granulation and extrusion, then carrying out sheet pulling in a two-roll internal mixer at the temperature of 168 ℃, then crushing the mixture by a crusher to obtain particles with the diameter size of 3mm, putting the particles into a single-screw extruder for mixing extrusion and cutting to obtain wafers with the diameter size of 6mm, and finally carrying out extrusion forming and internal mixing in a two-roll internal mixer at the temperature of 168 ℃ to obtain the plastic floor with the thickness of 2 mm.
Example 2
A production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
100g of PVC, 25g of dioctyl terephthalate, 5g of calcium-zinc stabilizer, 60g of calcium carbonate, 15g of zinc stannate and 5g of polyethylene wax are mixed and stirred for 5min at the temperature of 27 ℃, then the mixture is put into a double-screw extruder for mixing granulation and extrusion at the temperature of 150 ℃, then the mixture is subjected to sheet pulling in a two-roll internal mixer at the temperature of 170 ℃, then the mixture is crushed by a crusher to obtain particles with the diameter size of 4mm, the particles are put into a single-screw extruder for mixing extrusion and cutting to obtain wafers with the diameter size of 6.5mm, and finally the wafers are subjected to internal mixing in the two-roll internal mixer at the temperature of 170 ℃ to obtain the plastic floor with the thickness of 2.5 mm.
Example 3
A production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
mixing and stirring 110g of PVC, 20g of dioctyl terephthalate, 8g of calcium-zinc stabilizer, 50g of calcium carbonate, 20g of zinc stannate and 3g of polyethylene wax at the temperature of 30 ℃ for 10min, then putting the mixture into a double-screw extruder at the temperature of 152 ℃ for mixing granulation and extrusion, then carrying out sheet pulling in a two-roll internal mixer at the temperature of 172 ℃, then crushing the mixture by a crusher to obtain particles with the diameter size of 5mm, putting the particles into a single-screw extruder for mixing extrusion and cutting to obtain wafers with the diameter size of 7mm, and finally carrying out extrusion forming and internal mixing in a two-roll internal mixer at the temperature of 172 ℃ to obtain the plastic floor with the thickness of 3 mm.
Example 4
A production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
mixing and stirring 98g of PVC, 27g of dioctyl terephthalate, 4g of calcium-zinc stabilizer, 65g of calcium carbonate, 13g of zinc stannate and 6g of polyethylene wax at the temperature of 27 ℃ for 5min, then putting the mixture into a double-screw extruder at the temperature of 150 ℃ for mixing granulation and extrusion, then carrying out sheet pulling in a two-roll internal mixer at the temperature of 170 ℃, then crushing the mixture by a crusher to obtain particles with the diameter size of 4mm, putting the particles into a single-screw extruder for mixing extrusion and cutting to obtain wafers with the diameter size of 6.5mm, and finally carrying out internal mixing in the two-roll internal mixer at the temperature of 170 ℃ to obtain the plastic floor with the thickness of 2.5 mm.
Example 5
A production process of a PVC homogeneous core-penetrating wood grain plastic floor comprises the following steps:
102g of PVC, 23g of dioctyl terephthalate, 6g of calcium-zinc stabilizer, 55g of calcium carbonate, 17g of zinc stannate and 4g of polyethylene wax are mixed and stirred for 5min at the temperature of 27 ℃, then the mixture is put into a double-screw extruder for mixing granulation and extrusion at the temperature of 150 ℃, then the mixture is subjected to sheet pulling in a two-roll internal mixer at the temperature of 170 ℃, then the mixture is crushed by a crusher to obtain particles with the diameter size of 4mm, the particles are put into a single-screw extruder for mixing extrusion and cutting to obtain wafers with the diameter size of 6.5mm, and finally the wafers are subjected to internal mixing in the two-roll internal mixer at the temperature of 170 ℃ to obtain the plastic floor with the thickness of 2.5 mm.
Example 6
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the embodiment 2 in that: the calcium carbonate is modified by the following method:
50g of calcium carbonate is dried at the temperature of 75 ℃ and then crushed, then the calcium carbonate, 0.5g of stearic acid and 49g of ethanol are uniformly mixed at the temperature of 50 ℃, the mixture is crushed and stirred for 5min at the rotating speed of 4680r/min, and then the mixture is dried at the temperature of 85 ℃ to obtain the modified calcium carbonate with the particle diameter of 10 nm.
Example 7
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the embodiment 2 in that: the calcium carbonate is modified by the following method:
drying 52g of calcium carbonate at the temperature of 80 ℃, then crushing, then uniformly mixing the calcium carbonate with 0.8g of stearic acid and 52g of ethanol at the temperature of 52 ℃, crushing and stirring at the rotating speed of 4700r/min for 8min, and then drying at the temperature of 90 ℃ to obtain the modified calcium carbonate with the particle diameter of 50 nm.
Example 8
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the example 7 in that: the particle diameter of the modified calcium carbonate was 30 nm.
Example 9
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the example 7 in that: the particle diameter of the modified calcium carbonate was 35 nm.
Example 10
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the embodiment 2 in that: the raw materials also comprise 12g of nano magnesium hydroxide, 10g of aromatic acid calcium, 3g of thermoplastic starch prepared in preparation example 1 and 6g of mullite powder.
Example 11
The production process of the PVC homogeneous permeable wood grain plastic floor is different from that of the embodiment 2 in that: the raw materials also comprise 16g of nano magnesium hydroxide, 5g of aromatic acid calcium, 5g of thermoplastic starch prepared in preparation example 2 and 4g of mullite powder.
Example 12
A production process of a PVC homogeneous core-penetrating wood grain plastic floor, which is different from the production process of the embodiment 11 in that: the nano magnesium hydroxide is modified by the following method:
uniformly mixing 10g of nano magnesium hydroxide and 30g of water to obtain a nano magnesium hydroxide turbid liquid, uniformly mixing 1g of tannic acid and 98g of water, uniformly mixing 1g of ferric chloride and 97g of water to obtain a tannic acid solution and a ferric chloride solution, uniformly mixing the tannic acid solution and the nano magnesium hydroxide turbid liquid, stirring for 5min, uniformly mixing the ferric chloride solution and the tannic acid-nano magnesium hydroxide mixed liquid, stirring for 8min, filtering, washing, and drying at the temperature of 58 ℃ to obtain the modified nano magnesium hydroxide.
Example 13
A production process of a PVC homogeneous core-penetrating wood grain plastic floor, which is different from the production process of the embodiment 11 in that: the nano magnesium hydroxide is modified by the following method:
uniformly mixing 10g of nano magnesium hydroxide and 40g of water to obtain a nano magnesium hydroxide suspension, uniformly mixing 1g of tannic acid and 102g of water, uniformly mixing 1g of ferric chloride and 103g of water to obtain a tannic acid solution and a ferric chloride solution, uniformly mixing the tannic acid solution and the nano magnesium hydroxide suspension, stirring for 10min, uniformly mixing the ferric chloride solution and the tannic acid-nano magnesium hydroxide mixed solution, stirring for 10min, filtering, washing, and drying at the temperature of 62 ℃ to obtain the modified nano magnesium hydroxide.
Comparative example 1
The difference from example 2 is that: 60g of PVC, 10g of dioctyl terephthalate, 0.5g of calcium-zinc stabilizer, 30g of calcium carbonate, 5g of zinc stannate and 2.5g of polyethylene wax.
Comparative example 2
The difference from example 2 is that: 150g of PVC, 40g of dioctyl terephthalate, 12g of calcium-zinc stabilizer, 80g of calcium carbonate, 25g of zinc stannate and 10g of polyethylene wax.
Performance detection
The plastic flooring manufactured by examples 1 to 13 and comparative examples 1 to 2 were tested for impact resistance, wear resistance and flame retardancy, and the test results are shown in table 1:
impact resistance: testing the notch impact performance of the plastic floor according to GB/T1843 and 1996 Plastic cantilever impact test method, wherein the plastic floor adopts a V-shaped notch, the pendulum impact energy is 5.5J, and the impact strength (KJ.m.m) which can be borne by the plastic floor is recorded-2）；
Wear resistance: according to GB/T4085-3），FV=（m0-m1）/n×100（m0Is the initial mass m of the plastic floor1The mass is weighed for the last time before wearing, and n is the total revolution);
flame retardant property: the oxygen index (%) was determined using an oxygen index meter according to GB/T2406-1993 "Plastic burning Performance test methods oxygen index method".
TABLE 1 Performance test Table
| Item | Impact strength (KJ. m)-2） | Volume loss (mm)3） | Oxygen index (%) |
| Example 1 | 4.4 | 3.5 | 35.1 |
| Example 2 | 4.8 | 2.5 | 35.6 |
| Example 3 | 4.3 | 3.6 | 35.1 |
| Example 4 | 4.5 | 3.5 | 35.3 |
| Example 5 | 4.4 | 3.4 | 35.4 |
| Example 6 | 5.1 | 2.1 | 35.9 |
| Example 7 | 5.3 | 2.1 | 35.9 |
| Example 8 | 5.5 | 2.0 | 36.1 |
| Example 9 | 5.5 | 1.8 | 36.2 |
| Example 10 | 6.1 | 1.5 | 40.2 |
| Example 11 | 6.2 | 1.5 | 40.5 |
| Example 12 | 6.5 | 1.2 | 41.1 |
| Example 13 | 6.8 | 1.3 | 41.2 |
| Comparative example 1 | 2.5 | 8.5 | 30.1 |
| Comparative example 2 | 2.7 | 9.6 | 30.5 |
As can be seen from Table 1, the impact strength and oxygen index of examples 1-5 are significantly higher than those of comparative examples 1-2, and the volume loss is significantly less than that of comparative examples 1-2, which indicates that the homogeneous transparent plastic flooring made by examples 1-5 has higher impact resistance, wear resistance and flame retardancy.
The impact strength and the oxygen index of the examples 6 to 7 are higher than those of the example 2, and the volume loss is less than that of the example 2, which shows that the dispersibility and compatibility of the calcium carbonate when being mixed with PVC and other components can be obviously improved by modifying the calcium carbonate, so that the impact resistance, the wear resistance and the flame retardant property of the homogeneous transparent plastic floor are improved.
The impact strength and the oxygen index of the examples 8 to 9 are higher than those of the example 7, and the volume loss is less than that of the example 7, which shows that the impact resistance, the wear resistance and the flame retardant property of the homogeneous transparent plastic floor can be improved by controlling the particle diameter of the modified calcium carbonate within the range of 30 to 35 nm.
The impact strength and oxygen index of examples 10-11 are higher than those of example 2, and the volume loss is less than that of example 2, which shows that the impact resistance, wear resistance and flame retardancy of the homogeneous transparent plastic floor can be improved by using nano magnesium hydroxide, calcium aromatic acid, thermoplastic starch and mullite powder in a specific ratio range.
The impact strength and the oxygen index of examples 12 to 13 are higher than those of example 11, and the volume loss is less than that of example 11, which shows that the modification treatment of the nano magnesium hydroxide can obviously improve the dispersibility and compatibility of the nano magnesium hydroxide when being mixed with PVC and other components, so that the nano magnesium hydroxide can fully exert the flame retardant effect, thereby improving the flame retardant property of the homogeneous permeable plastic floor and improving the impact resistance and the wear resistance of the homogeneous permeable plastic floor.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The PVC homogeneous transparent wood grain plastic floor is characterized by comprising the following raw materials in parts by weight:
90-110 parts of PVC, 20-30 parts of dioctyl terephthalate, 2-8 parts of calcium-zinc stabilizer, 50-70 parts of calcium carbonate, 10-20 parts of zinc stannate and 3-7 parts of polyethylene wax.
2. The PVC homogeneous core-penetrating wood-grain plastic floor as recited in claim 1, wherein: the plastic floor comprises the following raw materials in parts by weight:
98-102 parts of PVC, 23-27 parts of dioctyl terephthalate, 4-6 parts of calcium-zinc stabilizer, 55-65 parts of calcium carbonate, 13-17 parts of zinc stannate and 4-6 parts of polyethylene wax.
3. The PVC homogeneous penetrating wood grain plastic floor as claimed in claim 1 or 2, wherein: the calcium carbonate is modified by the following method:
drying and crushing calcium carbonate at the temperature of 75-80 ℃, then uniformly mixing the calcium carbonate with stearic acid and ethanol at the temperature of 50-52 ℃, crushing and stirring for 5-8min at the rotating speed of 4680-4700r/min, and then drying at the temperature of 85-90 ℃ to obtain modified calcium carbonate, wherein the weight ratio of the calcium carbonate to the stearic acid to the ethanol is (50-52): (0.5-0.8): (49-52).
4. The PVC homogeneous core-penetrating wood-grain plastic floor as recited in claim 3, wherein: the particle diameter of the modified calcium carbonate is 30-35 nm.
5. The PVC homogeneous penetrating wood grain plastic floor as claimed in claim 1 or 2, wherein: the raw materials also comprise 12-16 parts of nano magnesium hydroxide, 5-10 parts of aromatic calcium, 3-5 parts of thermoplastic starch and 4-6 parts of mullite powder according to parts by weight;
wherein, the thermoplastic starch is prepared by the following method:
drying starch at 90-95 ℃ for 4-5h, mixing with glycerol, and stirring and mixing at 80-85 ℃ and 1300-1400r/min for 10-15min to obtain thermoplastic starch, wherein the weight ratio of starch to glycerol is (3.0-3.2): 1.
6. the PVC homogeneous core-penetrating wood-grain plastic floor as recited in claim 5, wherein: the nano magnesium hydroxide is modified by adopting the following method:
uniformly mixing nano magnesium hydroxide and water to obtain a nano magnesium hydroxide suspension, uniformly mixing tannic acid and ferric chloride with water respectively to obtain a tannic acid solution and a ferric chloride solution, uniformly mixing the tannic acid solution and the nano magnesium hydroxide suspension, stirring for 5-10min, uniformly mixing the ferric chloride solution and a tannic acid-nano magnesium hydroxide mixed solution, stirring for 8-10min, filtering, washing, and drying at the temperature of 58-62 ℃ to obtain modified nano magnesium hydroxide, wherein the weight ratio of the nano magnesium hydroxide to the water is 1: (3-4), wherein the weight ratio of the tannic acid to the water is 1: (98-102), the weight ratio of ferric chloride to water is 1: (97-103).
7. The process for producing a PVC homogeneous through-center wood-grain plastic floor as claimed in any one of claims 1 to 6, comprising the steps of:
mixing and stirring the raw materials at the temperature of 24-30 ℃ for 5-10min, then mixing, granulating and extruding at the temperature of 148-152 ℃, pulling the sheet at the temperature of 168-172 ℃ to obtain particles, then mixing, extruding and cutting the particles to obtain wafers, and finally banburying, extruding and forming at the temperature of 168-172 ℃ to obtain the plastic floor.
8. The process for producing the PVC homogeneous core-penetrating wood-grain plastic floor as claimed in claim 7, wherein: the diameter size of the particles is 3-5 mm.
9. The process for producing the PVC homogeneous core-penetrating wood-grain plastic floor as claimed in claim 7, wherein: the diameter size of the round piece is 6-7 mm.
10. The process for producing the PVC homogeneous core-penetrating wood-grain plastic floor as claimed in claim 7, wherein: the thickness of the plastic floor is 2-3 mm.
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| CN113930032A (en) * | 2021-11-20 | 2022-01-14 | 阿姆斯壮地面材料（中国）有限公司 | Preparation process of plastic floor capable of emitting light at night |
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