CN113698670B - Calcium zinc stabilizer and application thereof in SPC floor base material production - Google Patents
Calcium zinc stabilizer and application thereof in SPC floor base material production Download PDFInfo
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 79
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title abstract description 22
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 28
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004698 Polyethylene Substances 0.000 claims abstract description 17
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000008116 calcium stearate Substances 0.000 claims abstract description 17
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 17
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 17
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 17
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 17
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims abstract description 16
- -1 polyethylene Polymers 0.000 claims abstract description 16
- 229920000573 polyethylene Polymers 0.000 claims abstract description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 14
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000314 lubricant Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- 238000009408 flooring Methods 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 claims 2
- 239000012467 final product Substances 0.000 claims 1
- 239000003112 inhibitor Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 17
- 229920000915 polyvinyl chloride Polymers 0.000 description 16
- 239000004800 polyvinyl chloride Substances 0.000 description 15
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000003449 preventive effect Effects 0.000 description 5
- IQFVPQOLBLOTPF-HKXUKFGYSA-L congo red Chemical compound [Na+].[Na+].C1=CC=CC2=C(N)C(/N=N/C3=CC=C(C=C3)C3=CC=C(C=C3)/N=N/C3=C(C4=CC=CC=C4C(=C3)S([O-])(=O)=O)N)=CC(S([O-])(=O)=O)=C21 IQFVPQOLBLOTPF-HKXUKFGYSA-L 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004040 coloring Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 239000004605 External Lubricant Substances 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000004609 Impact Modifier Substances 0.000 description 1
- 239000004610 Internal Lubricant Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08L27/04—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 containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of SPC floors, in particular to a calcium zinc stabilizer and application thereof in production of SPC floor base materials. The raw materials comprise, by mass, 60-80 parts of stearic acid, 5-8 parts of nano zinc oxide, 2-5 parts of calcium stearate, 2-4 parts of hydrotalcite, 5-10 parts of monoglyceride, 5-10 parts of polyethylene wax, 2-5 parts of pentaerythritol and 5-10 parts of light calcium carbonate. The calcium-zinc stabilizer provided by the invention has the advantages of high lubricating performance, high plasticizing speed and the like, greatly reduces the use amount of processing aids, and simultaneously has the advantages of high efficiency, stability, energy conservation, consumption reduction and capacity improvement in the processing process of SPC floor base materials.
Description
Technical Field
The invention relates to the technical field of SPC floors, in particular to a calcium zinc stabilizer and application thereof in production of SPC floor base materials.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
SPC (Stone Plastic Composite) stone plastic floor is a novel environment-friendly floor newly developed in recent years, and has the characteristics of zero formaldehyde, mildew resistance, moisture resistance, fire resistance, insect resistance, simple installation, cyclic utilization and the like. The main raw material of the SPC floor is polyvinyl chloride resin, an extruder is combined with a T-shaped die to extrude an SPC substrate, a three-roll or four-roll calender is used for respectively laminating and embossing the PVC wear-resistant layer, the PVC color film and the SPC substrate by one-time heating, and glue is not used in the production process.
The production of SPC substrates is an important process for stone-plastic flooring. The production formula mainly comprises: polyvinyl chloride resin, natural calcium powder, a calcium-zinc stabilizer, a lubricant, a processing aid and the like, wherein the calcium-zinc stabilizer is a key raw material in the production process. Because PVC processing defects are not high temperature resistant, hydrogen chloride gas is released in the heating extrusion process, and the small molecular gas can cause severe decomposition of PVC to influence various physical properties of PVC, in order to reduce the decomposition of PVC, a proper amount of stabilizer is usually required to be added in the processing process to overcome the decomposition of PVC resin. Most of the traditional stabilizers are lead salt stabilizers, and because of the harm of heavy metals such as lead, cadmium and the like contained in the lead salt stabilizers to the environment and human bodies, the lead salt stabilizers are forbidden or replaced gradually. The calcium-zinc stabilizer is widely accepted as an environment-friendly product, and with the continuous progress of technology in recent years, the cost performance is continuously improved, and the calcium-zinc stabilizer can replace a lead salt stabilizer in the manufacturing of a full series of products. However, the inventors have found, through actual production, that the existing calcium zinc stabilizers have a problem of poor plasticizing ability, and thus more processing aids need to be added to increase the plasticizing ability of the SPC substrate preparation.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the calcium zinc stabilizer and the application thereof in the production of the SPC floor base material, and the calcium zinc stabilizer provided by the invention has the advantages of high lubricating property, high plasticizing speed and the like, greatly reduces the use amount of processing aids, and simultaneously has the advantages of high efficiency and stability, energy conservation, consumption reduction and capacity improvement in the process of processing the SPC floor base material.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
on the one hand, the calcium-zinc stabilizer comprises, by mass, 60-80 parts of stearic acid, 5-8 parts of nano zinc oxide, 2-5 parts of calcium stearate, 2-4 parts of hydrotalcite, 5-10 parts of monoglyceride, 5-10 parts of polyethylene wax, 2-5 parts of pentaerythritol and 5-10 parts of hydrotalcite.
The nano zinc oxide is used for reacting with part of stearic acid to generate zinc stearate, so as to ensure the initial coloring of the product; calcium stearate is used for long-term heat resistance and plasticizing promotion; the monoglyceride and the polyethylene wax play roles in internal and external lubrication, and the hydrotalcite mainly plays a role in prolonging heat resistance in the whole processing process; in conclusion, zinc stearate ensures initial coloring, calcium stearate promotes plastic bloom, monoglyceride solves friction among material molecules, PE wax solves friction among materials, a charging barrel screw and a die, and hydrotalcite plays a role in inhibiting PVC decomposition. The light calcium carbonate has the functions of promoting plasticization and reducing density in the use process.
On the other hand, the preparation method of the calcium-zinc stabilizer comprises the steps of adding nano zinc oxide to react after stearic acid is melted, adding calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol and light calcium carbonate, and stirring uniformly.
In a third aspect, the use of a calcium zinc stabilizer as described above in the production of SPC flooring substrates.
According to the fourth aspect, the SPC floor base material comprises, by mass, 50 parts of PVC, 150-175 parts of calcium powder, 30-50 parts of return materials, 4-5 parts of stabilizers, 1.7-2.0 parts of lubricants and 2-3.5 parts of processing aids; wherein the stabilizer is the calcium-zinc stabilizer.
The beneficial effects of the invention are as follows:
1. the calcium-zinc stabilizer provided by the invention has excellent thermal stability, long thermal stability time, good initial coloring and large lubrication, is suitable for preparing SPC floor base materials with high calcium powder adding proportion, and greatly reduces unstable production behaviors such as form stripping and shutdown.
2. The calcium zinc stabilizer provided by the invention is more thoroughly plasticized in the process of preparing the SPC floor base material, has more excellent product quality, can effectively reduce the production temperature, prevents the possibility of high-temperature paste, ensures that the extrusion speed is faster and has the possibility of adjustment, and the production efficiency is improved and the production cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a graph showing the rheological test result of the calcium zinc stabilizer prepared in example 1 of the present invention, wherein a is the temperature curve of the calcium zinc stabilizer in example 1, b is the temperature curve of the commercial calcium zinc stabilizer, c is the torque curve of the calcium zinc stabilizer in example 1, and d is the torque curve of the commercial calcium zinc stabilizer;
FIG. 2 is a photograph of a sample block after rheology of example 1 of the present invention, a is the calcium zinc stabilizer of example 1, b is a commercially available calcium zinc stabilizer;
FIG. 3 is a photograph of Congo red experiment of example 1 of the present invention taken for 25 minutes, a being the calcium zinc stabilizer prepared in example 1, b being a commercially available calcium zinc stabilizer;
FIG. 4 is a photograph of Congo red experiment conducted for 35 minutes in example 1 of the present invention, a is the calcium zinc stabilizer prepared in example 1, and b is a commercially available calcium zinc stabilizer.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the production process of SPC floor base materials, in order to reduce the cost, calcium powder needs to be added as much as possible, and the amount of the calcium powder is increased, so that the processing and the production are difficult. In order to solve the problem, the present invention has studied various commercial calcium-zinc stabilizers, however, the existing commercial calcium-zinc stabilizers are adopted for producing SPC floor substrates, and the problem of excessive addition of processing aids exists. In view of the problem of poor plasticizing capacity of the existing calcium zinc stabilizer, the invention provides a calcium zinc stabilizer and application thereof in SPC floor base material production.
The invention provides a calcium zinc stabilizer, which comprises, by mass, 60-80 parts of stearic acid, 5-8 parts of nano zinc oxide, 2-5 parts of calcium stearate, 2-4 parts of hydrotalcite, 5-10 parts of monoglyceride, 5-10 parts of polyethylene wax, 2-5 parts of pentaerythritol and 5-10 parts of light calcium carbonate.
In some examples of this embodiment, 1 to 2 parts of the mildew preventive is included.
Some examples of this embodiment include 1 to 5 parts of the uv absorber.
In another embodiment of the invention, a preparation method of the calcium-zinc stabilizer is provided, wherein the calcium-zinc stabilizer is prepared by adding nano zinc oxide to react after stearic acid is melted, adding calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol and light calcium carbonate, and stirring uniformly.
In some examples of this embodiment, the temperature of the reaction is 115 to 120 ℃.
In some examples of this embodiment, stearic acid is heated to 70-75 ℃ and then heated to 115-120 ℃ to completely melt, and then nano zinc oxide is added to react.
In some examples of this embodiment, calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol, and light calcium carbonate are added, and then heated to 120 to 130 ℃ and stirred.
In some examples of this embodiment, calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol, and light calcium carbonate are added and stirred uniformly, and then a mildewproof agent and/or an ultraviolet absorber are added and stirred uniformly.
The preparation method of the invention comprises the following steps:
1. and (3) starting steam, preheating the reaction kettle to 70-75 ℃, and keeping the temperature of the reaction kettle for 20-40 minutes to ensure that the temperature of the reaction kettle is uniform.
2. Turning on a stirrer, slowly adding stearic acid, stirring, slowly dissolving, heating to 115-120 ℃ for complete melting, adding zinc oxide, stirring and reacting for 20-40 minutes, and ending the reaction.
3. Heating to 120-130 deg.c to ensure the melting of calcium stearate, adding successively calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol and light calcium carbonate, stirring for 20-40 min at 120-130 deg.c.
4. Adding mildew preventive and anti-ultraviolet absorbent and stirring (keeping the temperature at 120-130 ℃) for 10-20 minutes.
5. Discharging materials, and tabletting and forming by a double-roller cooling tablet press.
In a third embodiment of the present invention, there is provided the use of the calcium zinc stabilizer described above in the production of SPC flooring substrates.
The fourth embodiment of the invention provides an SPC floor substrate, which comprises, by mass, 50 parts of PVC, 150-175 parts of calcium powder, 30-50 parts of return materials, 4-5 parts of stabilizers, 1.7-2.0 parts of lubricants and 2-3.5 parts of processing aids; wherein the stabilizer is the calcium-zinc stabilizer.
In some examples of this embodiment, the lubricant is an inner lubricant and an outer lubricant. The internal lubricant includes G60 and the like. The external lubricant includes PE wax and the like. The mass ratio of the inner lubricant to the outer lubricant is preferably 0.7-0.8:1.0-1.2.
In some examples of this embodiment, the processing aid includes a plasticizer and an impact modifier. Preferably a mixture of chlorinated polychloroethylene (abbreviated CPE) and ACR resin (abbreviated ACR). CPE can be used as a plasticizer, and is mutually fused with PVC, and phase separation phenomenon exists, so that the PVC becomes a plastic alloy state containing elastomer microparticles after mixing, and the impact resistance of the PVC is improved. After the CPE is matched with the ACR, the mechanical property of the SPC floor base material can be improved.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail with reference to specific embodiments.
Example 1
The preparation method of the calcium zinc stabilizer comprises the following steps:
1. and (3) starting steam, preheating the reaction kettle to 70 ℃, and keeping the temperature of the reaction kettle for 30 minutes to be uniform.
2. And (3) turning on a stirrer, slowly adding 70 parts by mass of stearic acid, stirring, slowly dissolving, heating to 115 ℃ to completely melt, adding 6 parts by mass of nano zinc oxide, and stirring for reaction for 30 minutes to finish the reaction.
3. 4 parts by mass of calcium stearate, 3 parts by mass of hydrotalcite, 8 parts by mass of monoglyceride, 7 parts by mass of polyethylene wax, 3 parts by mass of pentaerythritol and 6 parts by mass of light calcium carbonate were successively added and stirred for 30 minutes (kept at 125 ℃).
4. 1 part by mass of a mildew preventive and 3 parts by mass of an ultraviolet absorber were added and stirred for 15 minutes.
5. Discharging the materials, and tabletting and forming the materials by a double-roller cooling tablet press to obtain the calcium-zinc stabilizer.
The calcium zinc stabilizer prepared in this example and the commercial calcium zinc stabilizer were tested by using a Ha Pu rheometer under the test conditions shown in table 1, and the test results shown in fig. 1 and 2. Among them, the commercial calcium-zinc stabilizer is the one (CZ-4, the commercial calcium-zinc stabilizer used below is the commercial calcium-zinc stabilizer) which has the best plasticizing effect after the research of various commercial calcium-zinc stabilizers.
TABLE 1 detection conditions
TABLE 2 detection results
The results show that the calcium-zinc stabilizer provided by the embodiment is faster in plasticizing, so that the plasticizing state is easier to achieve in production, a solid foundation is laid for low-temperature production, and a mat is made for long-time stable starting.
As shown in figure 2, the photo of the rheological sample block is better in plasticization, more round in appearance, unchanged in color of the block and long in thermal stability, and the commercial calcium-zinc stabilizer is poorer in molding, poorer in plasticization and completely free of any plasticizing effect.
Congo red experiments are carried out on the calcium zinc stabilizer prepared in the embodiment and the commercial calcium zinc stabilizer, and the experimental conditions are as follows: 200 ℃ constant temperature oil bath PVC50 g+2.5 g calcium zinc stabilizer.
At 25 minutes, the experimental material of the commercial calcium zinc stabilizer changed color and decomposed, and the congo red test paper changed color, as shown in fig. 3. At 35 minutes, the experimental materials of the calcium zinc stabilizer prepared in this example were discolored and decomposed, as shown in fig. 4. The stability of the calcium zinc stabilizer prepared in this example is shown to be due to the existing commercial calcium zinc stabilizers.
The raw materials for preparing the SPC floor base material using this example are shown in table 3.
Table 3 raw materials table (parts by mass)
Wherein, the calcium-zinc stabilizer adopted by the SPC floor substrate 1 is a commercial calcium-zinc stabilizer, and the calcium-zinc stabilizer adopted by the SPC floor substrate 2 is the calcium-zinc stabilizer prepared in the embodiment.
The mechanical properties of the SPC floor base material prepared by the method are as follows:
the results show that the calcium zinc stabilizer prepared in the embodiment can greatly reduce the addition amount of the processing aid (CPE+ACR).
Example 2
The preparation method of the calcium zinc stabilizer comprises the following steps:
1. and (3) starting steam, preheating the reaction kettle to 75 ℃, and keeping the temperature of the reaction kettle for 30 minutes to be uniform.
2. And (3) turning on a stirrer, slowly adding 80 parts by mass of stearic acid, stirring, slowly dissolving, heating to 120 ℃ to melt completely, adding 8 parts by mass of nano zinc oxide, and stirring for reaction for 30 minutes to finish the reaction.
3.5 parts by mass of calcium stearate, 4 parts by mass of hydrotalcite, 5 parts by mass of monoglyceride, 6 parts by mass of polyethylene wax, 2 parts by mass of pentaerythritol and 6 parts by mass of light calcium carbonate were successively added and stirred for 30 minutes (at 130 ℃).
4. 2 parts by mass of a mildew preventive and 4 parts by mass of an ultraviolet absorber were added and stirred for 15 minutes.
5. Discharging the materials, and tabletting and forming the materials by a double-roller cooling tablet press to obtain the calcium-zinc stabilizer.
Example 3
The preparation method of the calcium zinc stabilizer comprises the following steps:
1. and (3) starting steam, preheating the reaction kettle to 72 ℃, and keeping the temperature of the reaction kettle for 30 minutes to be uniform.
2. And (3) turning on a stirrer, slowly adding 60 parts by mass of stearic acid, stirring, slowly dissolving, heating to 115 ℃ to completely melt, adding 5 parts by mass of nano zinc oxide, and stirring for reaction for 30 minutes to finish the reaction.
3. 2 parts by mass of calcium stearate, 2 parts by mass of hydrotalcite, 10 parts by mass of monoglyceride, 10 parts by mass of polyethylene wax, 5 parts by mass of pentaerythritol and 9 parts by mass of light calcium carbonate were successively added and stirred for 30 minutes (at 130 ℃).
4. 1 part by mass of a mildew preventive and 5 parts by mass of an ultraviolet absorber were added and stirred for 15 minutes.
5. Discharging the materials, and tabletting and forming the materials by a double-roller cooling tablet press to obtain the calcium-zinc stabilizer.
The calcium zinc stabilizers prepared in examples 2 to 3 have similar properties to those prepared in example 1.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The SPC floor base material is characterized by comprising, by mass, 50 parts of PVC, 150-175 parts of calcium powder, 30-50 parts of return materials, 4-5 parts of calcium-zinc stabilizers, 1.7-2.0 parts of lubricants and 2-3.5 parts of processing aids; the processing aid is a mixture of chlorinated polyethylene CPE and ACR resin;
wherein, the raw materials of the calcium-zinc stabilizer comprise, by mass, 60-80 parts of stearic acid, 5-8 parts of nano zinc oxide, 2-5 parts of calcium stearate, 2-4 parts of hydrotalcite, 5-10 parts of monoglyceride, 5-10 parts of polyethylene wax, 2-5 parts of pentaerythritol and 5-10 parts of light calcium carbonate;
the preparation method of the calcium zinc stabilizer comprises the following steps: firstly heating stearic acid to 70-75 ℃, then heating to 115-120 ℃ to completely melt, and then adding nano zinc oxide to react at 115-120 ℃; then adding calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol and light calcium carbonate, heating to 120-130 ℃, stirring, and stirring uniformly to obtain the final product.
2. The SPC floor substrate of claim 1, wherein said calcium zinc stabilizer comprises 1 to 2 parts of a mildew inhibitor; or 1-5 parts of ultraviolet resistant absorbent.
3. The SPC floor substrate of claim 1 wherein the calcium stearate, hydrotalcite, monoglyceride, polyethylene wax, pentaerythritol, light calcium carbonate are added and stirred uniformly, and then the mildewcide and/or the ultraviolet absorber are added and stirred uniformly.
4. The SPC flooring substrate of claim 1, wherein the lubricant is an inner lubricant and an outer lubricant.
5. The SPC floor substrate of claim 4, wherein the mass ratio of the inner lubricant to the outer lubricant is 0.7-0.8:1.0-1.2.
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