CN116285036A - Flame-retardant PVC (polyvinyl chloride) and NBR (nitrile butadiene rubber) rubber plastic floor material and processing method thereof - Google Patents
Flame-retardant PVC (polyvinyl chloride) and NBR (nitrile butadiene rubber) rubber plastic floor material and processing method thereof Download PDFInfo
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- 229920000459 Nitrile rubber Polymers 0.000 title claims abstract description 57
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 57
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims abstract description 37
- 229920001971 elastomer Polymers 0.000 title claims abstract description 34
- 239000005060 rubber Substances 0.000 title claims abstract description 34
- 229920003023 plastic Polymers 0.000 title claims abstract description 29
- 239000004033 plastic Substances 0.000 title claims abstract description 29
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003063 flame retardant Substances 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000000843 powder Substances 0.000 claims abstract description 71
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 40
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 33
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 26
- 239000006229 carbon black Substances 0.000 claims abstract description 23
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 20
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 15
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 15
- 239000011593 sulfur Substances 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052627 muscovite Inorganic materials 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 22
- 229910052710 silicon Inorganic materials 0.000 claims description 22
- 239000010703 silicon Substances 0.000 claims description 22
- 239000003963 antioxidant agent Substances 0.000 claims description 19
- 239000004014 plasticizer Substances 0.000 claims description 19
- 230000003078 antioxidant effect Effects 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- BEIOEBMXPVYLRY-UHFFFAOYSA-N [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(C=1C=CC(=CC=1)C=1C=CC(=CC=1)P(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C BEIOEBMXPVYLRY-UHFFFAOYSA-N 0.000 claims description 2
- 239000011280 coal tar Substances 0.000 claims description 2
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 239000010665 pine oil Substances 0.000 claims description 2
- 239000006235 reinforcing carbon black Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 2
- 229960002447 thiram Drugs 0.000 claims description 2
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 2
- 238000009408 flooring Methods 0.000 claims 7
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- 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
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a flame-retardant PVC (polyvinyl chloride) and NBR (nitrile butadiene rubber) rubber-plastic floor material, which belongs to the technical field of rubber-plastic materials and comprises the following raw materials in parts by weight: 50-70 parts of NBR, 20-40 parts of PVC, 5-10 parts of rubber powder, 15-25 parts of carbon black, 10-20 parts of muscovite powder, 10-15 parts of silica powder, 10-20 parts of zinc oxide, 20-30 parts of DOP, 5-10 parts of sulfur, 10-20 parts of aluminum hydroxide, 5-10 parts of nano calcium carbonate and 10-20 parts of auxiliary agent.
Description
Technical Field
The invention relates to the technical field of rubber and plastic materials, in particular to a flame-retardant PVC (polyvinyl chloride) and NBR (nitrile butadiene rubber) rubber and plastic floor material and a processing method thereof.
Background
PVC, namely polyvinyl chloride, is one of the plastic products with the largest yield in the world, and has low price and wide application. NBR, namely nitrile rubber, is mainly produced by a low-temperature emulsion polymerization method, and has excellent oil resistance, higher wear resistance, better heat resistance and strong adhesive force. In the prior art, the PVC and the NBR are blended to obtain a blend, the blend has both the ozone resistance of the PVC and the oil resistance and the cross-linking property of the NBR, and has certain flame retardant property and good physical and mechanical properties, however, the existing blend is influenced by a formula and a preparation process, so that the fluidity of the blend is poor when the blend is prepared, the preparation processing time is long, the processing cost is increased, and meanwhile, the surface smoothness and the scratch resistance of a product prepared from the prepared blend are poor.
Disclosure of Invention
The invention aims to provide a flame-retardant PVC (polyvinyl chloride) and NBR (nitrile butadiene rubber) rubber-plastic floor material, which solves the problems of poor flowability, poor surface smoothness and poor scratch resistance of rubber materials in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a flame-retardant PVC, NBR rubber-plastic floor material is composed of the following raw materials in parts by weight: 50-70 parts of NBR (nitrile butadiene rubber), 20-40 parts of PVC (polyvinyl chloride), 5-10 parts of rubber powder, 15-25 parts of carbon black, 10-20 parts of muscovite powder, 10-15 parts of silica micropowder, 10-20 parts of zinc oxide, 20-30 parts of DOP (polyethylene terephthalate), 5-10 parts of sulfur, 10-20 parts of aluminum hydroxide, 5-10 parts of nano calcium carbonate and 10-20 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
Preferably, the material comprises the following raw materials in parts by weight: 50 parts of NBR, 20 parts of PVC, 6 parts of rubber powder, 15 parts of carbon black, 11 parts of muscovite powder, 10 parts of silicon micropowder, 10 parts of zinc oxide, 20 parts of DOP, 5 parts of sulfur, 11 parts of aluminum hydroxide, 5 parts of nano calcium carbonate and 12 parts of auxiliary agents, wherein the auxiliary agents comprise a stabilizer, a plasticizer, an accelerator and an antioxidant.
Preferably, the material comprises the following raw materials in parts by weight: 60 parts of NBR, 30 parts of PVC, 8 parts of rubber powder, 21 parts of carbon black, 15 parts of muscovite powder, 13 parts of silica micropowder, 16 parts of zinc oxide, 15 parts of DOP, 7 parts of sulfur, 15 parts of aluminum hydroxide, 7 parts of nano calcium carbonate and 16 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
Preferably, the material comprises the following raw materials in parts by weight: 70 parts of NBR, 40 parts of PVC, 10 parts of rubber powder, 25 parts of carbon black, 20 parts of muscovite powder, 15 parts of silica micropowder, 20 parts of zinc oxide, 30 parts of DOP, 10 parts of sulfur, 20 parts of aluminum hydroxide, 10 parts of nano calcium carbonate and 20 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
The rubber powder and the muscovite powder can reduce the cost of the rubber material under the condition of ensuring the unchanged performance of the rubber material, improve the processing performance of the rubber material, and as the nano calcium carbonate has good dispersibility, the nano calcium carbonate plays a good role in reinforcing, and can improve the dispersibility and the wear resistance of the product by combining with the product, thereby improving the flowability of the product, shortening the processing time and reducing the processing cost.
Preferably, the silicon micro powder is superfine silicon micro powder, and the silicon micro powder comprises powder quartz, silica powder and quartz powder, and the superfine treatment method of the silicon micro powder comprises the following steps: grinding the silicon micro powder by using a ball mill, adopting a wet grinding process, and drying after grinding, wherein the particle size of the silicon micro powder is 1-5 mu m. The wear resistance of the product can be enhanced through the silica powder, meanwhile, the physical and chemical properties and the optical properties of the product are improved, and the silica powder can be better dispersed into the product after the granularity of the silica powder is treated, so that the mechanical properties of the product are more stable.
Preferably, the carbon black comprises medium super wear-resistant carbon black N220, high wear-resistant carbon black N330, fast extrusion furnace carbon black N550 and semi-reinforcing carbon black N774, the antioxidants comprise antioxidant 168, antioxidant 1010, antioxidant BHT, antioxidant 405 and antioxidant PEPQ, the stabilizers comprise lead salt, metal soap stabilizers and organotin stabilizers, the plasticizers comprise petroleum plasticizers, coal tar plasticizers and pine oil plasticizers, and the accelerators comprise 2-mercaptobenzothiazole, dibenzothiazyl disulfide, tetramethyl thiuram disulfide and zinc diethyl dithiocarbamate.
A method for processing flame-retardant PVC, NBR rubber-plastic floor material comprises the following steps:
step 1: placing NBR, rubber powder, muscovite powder and an auxiliary agent into a plastic mixer for plastic refining uniformly to prepare NBR master batch for later use;
step 2: adding PVC, DOP and zinc oxide into an internal mixer, plasticizing for 10-20min to obtain PVC master batch, wherein the rotating speed is 60r/min, and the temperature is 150-170 ℃;
step 3: adding NBR master batch in the step 1 and PVC master batch in the step 2 into an internal mixer for blending, wherein the temperature is 155-160 ℃, thinning and passing for 3-4 times, adding aluminum hydroxide and carbon black at the rotating speed, uniformly mixing, and then adding sulfur, silicon micropowder and nano calcium carbonate for dynamic vulcanization to obtain a mixture;
step 4: and (3) feeding the mixture obtained in the step (3) into a screw extruder, carrying out melt blending and extrusion molding to obtain the PVC/NBR rubber plastic floor material, wherein the working temperature of the screw extruder is 220 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1) According to the invention, the rubber powder and the muscovite powder can ensure that the rubber material cost is reduced under the condition of unchanged rubber material performance, and the rubber material processing performance is improved, and as the nano calcium carbonate has good dispersibility, the nano calcium carbonate plays a good reinforcing role, and the nano calcium carbonate can be combined with a product to improve the dispersibility and wear resistance of the product, improve the flowability of the product, shorten the processing time and reduce the processing cost.
2) According to the invention, the wear resistance of the product can be enhanced through the silica powder, meanwhile, the physical and chemical properties and the optical properties of the product are improved, and the silica powder can be better dispersed into the product after the granularity of the silica powder is treated, so that the mechanical properties of the product are more stable.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or imply that the invention is being described and simplified by no means is to be interpreted as limiting, but rather indicates or suggests that the device or element in question must have a particular orientation, be constructed and operated in a particular orientation.
The invention provides a technical scheme that:
example 1:
a flame-retardant PVC, NBR rubber-plastic floor material is composed of the following raw materials in parts by weight: 50 parts of NBR (nitrile butadiene rubber), 20 parts of PVC (polyvinyl chloride), 6 parts of rubber powder, 15 parts of carbon black, 11 parts of white mica powder, 10 parts of silica micropowder, 10 parts of zinc oxide, 20 parts of DOP (polyethylene terephthalate), 5 parts of sulfur, 11 parts of aluminum hydroxide, 5 parts of nano calcium carbonate and 12 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant, the silica micropowder is superfine silica micropowder, and the silica micropowder comprises quartz powder, silica powder and quartz powder, and the superfine treatment method of the silica micropowder comprises the following steps: grinding the silicon micro powder by using a ball mill, adopting a wet grinding process, and drying after grinding, wherein the particle size of the silicon micro powder is 1 mu m.
Example 2:
a flame-retardant PVC, NBR rubber-plastic floor material is composed of the following raw materials in parts by weight: 60 parts of NBR (nitrile butadiene rubber), 30 parts of PVC (polyvinyl chloride), 8 parts of rubber powder, 21 parts of carbon black, 15 parts of white mica powder, 13 parts of silica micropowder, 16 parts of zinc oxide, 15 parts of DOP (polyethylene terephthalate), 7 parts of sulfur, 15 parts of aluminum hydroxide, 7 parts of nano calcium carbonate and 16 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant, the silica micropowder is superfine silica micropowder, and the silica micropowder comprises quartz powder, silica powder and quartz powder, and the superfine treatment method of the silica micropowder comprises the following steps: grinding the silicon micro powder by using a ball mill, adopting a wet grinding process, and drying after grinding, wherein the particle size of the silicon micro powder is 3 mu m.
Example 3:
a flame-retardant PVC, NBR rubber-plastic floor material is composed of the following raw materials in parts by weight: 70 parts of NBR (nitrile butadiene rubber), 40 parts of PVC (polyvinyl chloride), 10 parts of rubber powder, 25 parts of carbon black, 20 parts of white mica powder, 15 parts of silica micropowder, 20 parts of zinc oxide, 30 parts of DOP (polyethylene terephthalate), 10 parts of sulfur, 20 parts of aluminum hydroxide, 10 parts of nano calcium carbonate and 20 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant, the silica micropowder is superfine silica micropowder, and the silica micropowder comprises quartz powder, silica powder and quartz powder, and the superfine treatment method of the silica micropowder comprises the following steps: grinding the silicon micro powder by using a ball mill, adopting a wet grinding process, and drying after grinding, wherein the particle size of the silicon micro powder is 5 mu m.
The processing method of the embodiment 1-3 of the invention comprises the following steps:
step 1: placing NBR, rubber powder, muscovite powder and an auxiliary agent into a plastic mixer for plastic refining uniformly to prepare NBR master batch for later use;
step 2: adding PVC, DOP and zinc oxide into an internal mixer, plasticizing for 10-20min to obtain PVC master batch, wherein the rotating speed is 60r/min, and the temperature is 150-170 ℃;
step 3: adding NBR master batch in the step 1 and PVC master batch in the step 2 into an internal mixer for blending, wherein the temperature is 155-160 ℃, thinning and passing for 3-4 times, adding aluminum hydroxide and carbon black at the rotating speed, uniformly mixing, and then adding sulfur, silicon micropowder and nano calcium carbonate for dynamic vulcanization to obtain a mixture;
step 4: and (3) feeding the mixture obtained in the step (3) into a screw extruder, carrying out melt blending and extrusion molding to obtain the PVC/NBR rubber plastic floor material, wherein the working temperature of the screw extruder is 220 ℃.
The rubber and plastic floor materials prepared in the examples 1-3 and the comparative examples 1-2 are tested according to the standard GB/T528-2009 for tensile strength and elongation at break, and meanwhile, the compressive strength and the dimensional change rate during stretching are tested, and as can be seen from the table above, the products prepared in the examples 1-3 are better in dispersibility and wear resistance, and the tensile strength at break and the wear resistance are better than those of the comparative examples in the prior art.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A flame-retardant PVC, NBR rubber-plastic floor material, characterized by that: the material consists of the following raw materials in parts by weight: 50-70 parts of NBR (nitrile butadiene rubber), 20-40 parts of PVC (polyvinyl chloride), 5-10 parts of rubber powder, 15-25 parts of carbon black, 10-20 parts of muscovite powder, 10-15 parts of silica micropowder, 10-20 parts of zinc oxide, 20-30 parts of DOP (polyethylene terephthalate), 5-10 parts of sulfur, 10-20 parts of aluminum hydroxide, 5-10 parts of nano calcium carbonate and 10-20 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
2. The flame retardant PVC, NBR rubber-plastic flooring material according to claim 1, wherein: the material consists of the following raw materials in parts by weight: 50 parts of NBR, 20 parts of PVC, 6 parts of rubber powder, 15 parts of carbon black, 11 parts of muscovite powder, 10 parts of silicon micropowder, 10 parts of zinc oxide, 20 parts of DOP, 5 parts of sulfur, 11 parts of aluminum hydroxide, 5 parts of nano calcium carbonate and 12 parts of auxiliary agents, wherein the auxiliary agents comprise a stabilizer, a plasticizer, an accelerator and an antioxidant.
3. The flame retardant PVC, NBR rubber-plastic flooring material according to claim 1, wherein: the material consists of the following raw materials in parts by weight: 60 parts of NBR, 30 parts of PVC, 8 parts of rubber powder, 21 parts of carbon black, 15 parts of muscovite powder, 13 parts of silica micropowder, 16 parts of zinc oxide, 15 parts of DOP, 7 parts of sulfur, 15 parts of aluminum hydroxide, 7 parts of nano calcium carbonate and 16 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
4. The flame retardant PVC, NBR rubber-plastic flooring material according to claim 1, wherein: the material consists of the following raw materials in parts by weight: 70 parts of NBR, 40 parts of PVC, 10 parts of rubber powder, 25 parts of carbon black, 20 parts of muscovite powder, 15 parts of silica micropowder, 20 parts of zinc oxide, 30 parts of DOP, 10 parts of sulfur, 20 parts of aluminum hydroxide, 10 parts of nano calcium carbonate and 20 parts of auxiliary agent, wherein the auxiliary agent comprises a stabilizer, a plasticizer, an accelerator and an antioxidant.
5. A flame retardant PVC, NBR rubber flooring according to any of claims 1 to 4, wherein: the silicon micro powder is superfine silicon micro powder, and comprises powder quartz, silica powder and quartz powder, and the superfine treatment method of the silicon micro powder comprises the following steps: grinding the silicon micropowder by using a ball mill, adopting a wet grinding process, and drying after finishing grinding.
6. The flame retardant PVC, NBR rubber-plastic flooring material according to claim 5, wherein: the particle size of the silicon micropowder is 1-5 mu m.
7. A flame retardant PVC, NBR rubber flooring according to any of claims 1 to 4, wherein: the carbon black comprises medium and super wear-resistant carbon black N220, high wear-resistant carbon black N330, fast extrusion furnace carbon black N550 and semi-reinforcing carbon black N774, the antioxidants comprise antioxidant 168, antioxidant 1010, antioxidant BHT, antioxidant 405 and antioxidant PEPQ, the stabilizers comprise lead salt, metal soap stabilizers and organotin stabilizers, the plasticizers comprise petroleum plasticizers, coal tar plasticizers and pine oil plasticizers, and the accelerators comprise 2-mercaptobenzothiazole, dibenzothiazyl disulfide, tetramethyl thiuram disulfide and zinc diethyl dithiocarbamate.
8. A method of processing a flame retardant PVC, NBR rubber flooring material according to any of claims 1-4, characterized in that: the method comprises the following steps:
step 1: placing NBR, rubber powder, muscovite powder and an auxiliary agent into a plastic mixer for plastic refining uniformly to prepare NBR master batch for later use;
step 2: adding PVC, DOP and zinc oxide into an internal mixer, plasticizing for 10-20min to obtain PVC master batch, wherein the rotating speed is 60r/min, and the temperature is 150-170 ℃;
step 3: adding NBR master batch in the step 1 and PVC master batch in the step 2 into an internal mixer for blending, wherein the temperature is 155-160 ℃, thinning and passing for 3-4 times, adding aluminum hydroxide and carbon black at the rotating speed, uniformly mixing, and then adding sulfur, silicon micropowder and nano calcium carbonate for dynamic vulcanization to obtain a mixture;
step 4: and (3) sending the mixture in the step (3) into a screw extruder, carrying out melt blending and extrusion molding to obtain the PVC/NBR rubber-plastic floor material.
9. The method for processing flame-retardant PVC, NBR rubber-plastic floor material according to claim 8, wherein the method comprises the following steps: the working temperature of the screw extruder in the step 4 is 220 ℃.
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