CN111119446B - PVC-TPU (polyvinyl chloride-thermoplastic polyurethane) bonding sports floor and preparation method thereof - Google Patents
PVC-TPU (polyvinyl chloride-thermoplastic polyurethane) bonding sports floor and preparation method thereof Download PDFInfo
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- CN111119446B CN111119446B CN201911394292.0A CN201911394292A CN111119446B CN 111119446 B CN111119446 B CN 111119446B CN 201911394292 A CN201911394292 A CN 201911394292A CN 111119446 B CN111119446 B CN 111119446B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/22—Resiliently-mounted floors, e.g. sprung floors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/105—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of organic plastics with or without reinforcements or filling materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use 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; Derivatives of such polymers
- C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Structural Engineering (AREA)
- Wood Science & Technology (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to a PVC-TPU (polyvinyl chloride-thermoplastic polyurethane) adhesive sports floor and a preparation method thereof. The sports floor is prepared by preparing the foaming layer, the stabilizing layer and the PVC layer through melting, and then adhering the TPU layer containing the polyvinyl chloride paste resin to the PVC layer in a double-adhesion mode to prepare the PVC-TPU adhesion method sports floor.
Description
Technical Field
The invention relates to the technical field of sports floor production, in particular to a PVC-TPU (polyvinyl chloride-thermoplastic polyurethane) bonding sports floor and a preparation method thereof.
Background
PVC is one of common engineering plastics, has thermoplasticity, is insoluble in water, gasoline and ethanol, swells or dissolves in ether, ketone, chlorinated aliphatic hydrocarbon and aromatic hydrocarbon, has strong corrosion resistance and good dielectric property, not only has the characteristic of light weight, but also has the characteristics of high strength, oil resistance, chemical resistance and the like, and is frequently used for materials such as sports floors and the like. However, it has the following disadvantages: 1. the toughness is poor, and the steel plate is easy to brittle fracture when being impacted; 2. the brittleness of polyvinyl chloride is greatly influenced by temperature, the lower limit of the use of general PVC products is-15 ℃, and the lower limit of the use of soft PVC is-30 ℃. PVC has a plurality of toughening modifiers which can be roughly divided into elastomer toughening modifiers and non-elastomer toughening modifiers, and the toughening modifiers have better effects such AS EVA, NBR, TPU, SBR, ABS, MBS, ACR, CPE, AS, PS and the like.
However, in the prior art, the phenomena that the compatibility of PVC and a modified material is poor, so that the adhesion force of two phases is insufficient, the layering and cracking are easy to occur in the using process, the performance of the blend is reduced or unstable, and a good toughening effect cannot be generated.
Disclosure of Invention
In order to solve the technical problems, the invention provides a PVC-TPU bonding sports floor and a preparation method thereof, wherein PVC is bonded with TPU, so that the floor has better elasticity, and the surface stain resistance effect is improved by more than 10 times; the friction resistance coefficient is improved by more than 100 times, the anti-ultraviolet effect reaches the national standard (GB/18586) through certification, and the aging test reaches the national standard.
One of the technical schemes of the invention provides a PVC-TPU bonding method sports floor, which sequentially comprises a foaming layer, a stabilizing layer, a PVC layer and a TPU layer from bottom to top; wherein the content of the first and second substances,
the PVC layer comprises the following raw materials: PVC resin, plasticizer, barium zinc stabilizer and dye;
the raw materials of the stabilizing layer comprise: PVC resin, a plasticizer, a barium zinc stabilizer and calcium carbonate;
the foaming layer comprises the following raw materials: PVC resin, a plasticizer, a potassium zinc stabilizer, a VC foaming agent and dye;
the TPU layer is a mixture prepared by coating polyvinyl chloride paste resin on the surface of the TUP.
Preferably, the PVC layer comprises the following raw materials in parts by weight: 80-100 parts of PVC resin, 55-65 parts of plasticizer, 1-1.3 parts of barium-zinc stabilizer and 1.0-1.3 parts of dye.
Preferably, the raw materials of the stabilizing layer comprise, by weight: 80-100 parts of PVC resin, 55-65 parts of plasticizer, 1-1.3 parts of barium-zinc stabilizer and 28-35 parts of calcium carbonate.
Preferably, the foaming layer comprises the following raw materials in parts by weight: 80-120 parts of PVC resin, 55-65 parts of plasticizer, 1.0-1.8 parts of potassium zinc stabilizer, 2.5-3.5 parts of VC foaming agent and 1.0-1.3 parts of dye.
Preferably, the plasticizer is the plasticizer DOP.
Preferably, in the TPU layer, the coating thickness of the polyvinyl chloride paste resin on the surface of the TUP is 3 to 5 mm.
The second technical scheme of the invention is as follows: the preparation method of the PVC-TPU bonding sports floor comprises the following steps:
(1) coating and sizing the surface layer, mixing PVC resin, a plasticizer, a barium-zinc stabilizer and dye, melting and refining at high temperature to form melt adhesive, coating the melt adhesive by a coating machine at the temperature of 160-200 ℃ and the vehicle speed of 10-12m/min, and shaping the melt adhesive to obtain a PVC layer;
(2) cloth base bonding, namely melting PVC resin, a plasticizer, a barium-zinc stabilizer and calcium carbonate at high temperature to obtain molten glue, coating the molten glue on the surface of the PVC layer prepared in the step (1), and shaping the molten glue to obtain a stable layer;
(3) coating a foaming layer: melting PVC resin, a plasticizer, a potassium-zinc stabilizer, a VC foaming agent and dye at high temperature, smelting into molten gel, coating the molten gel on the surface of the stable layer prepared in the step (2), and shaping the molten gel to obtain a foaming layer;
(4) and (3) TPU (thermoplastic polyurethane) laminating: the PVC is taken as a main machine, a film coating machine is matched with the production method, polyvinyl chloride paste resin is heated and melted, the polyvinyl chloride paste resin and TPU are placed in the film coating machine to be compatible to obtain a TPU layer, the prepared TPU layer and the PVC layer are pressed, and the obtained TPU layer and the PVC layer are cooled, formed and rolled to obtain the PVC-TPU bonding sports floor.
Preferably, the bonding process of the TPU main material and the PVC in the step (4) adopts double embossing bonding.
Preferably, the viscosity of the melt-prepared mixed liquid in the process of the laminating machine in the step (4) is 3000-8000pa.s, and the flow rate is 15-20 m/min.
Preferably, the polyvinyl chloride paste resin is a modified 110PVC resin or a modified 120PVC resin.
Compared with the prior art, the invention has the following beneficial effects:
(1) the modification of the PVC layer by the TUP is completed by bonding the TPU layer dissolved with the polyvinyl chloride paste resin to the PVC layer, so that the compatibility of the TPU layer and the PVC layer is greatly improved, the phenomena of layering and cracking in the use process caused by incompatibility of the TPU and the PVC in the prior art are overcome, and the technical problem of performance reduction or instability caused by blending of the TPU layer and the PVC layer is avoided;
(2) the PVC foaming layer has good rebound elasticity, can resist impact force and play a role in buffering, but has no antibacterial and ultraviolet-resistant functions and weak waterproof function, and the TPU has the properties of high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, weather resistance and the like which cannot be compared with other plastic materials, and simultaneously has a plurality of excellent functions of high waterproofness, moisture permeability, wind resistance, cold resistance, antibiosis, mildew resistance, heat preservation, ultraviolet resistance, energy release and the like, the TPU and the PVC are smoothly bonded to ensure that the elasticity of the floor is better, and simultaneously the TPU and the PVC have double excellent performances, so that the stain resistance effect of the surface of the floor is improved by more than 10 times, the friction resistance coefficient is improved by more than 100 times, the ultraviolet resistance effect reaches the national standard (GB/18586-, the color change resistance and the water and moisture resistance are achieved in the using process.
Detailed Description
Example 1
Weighing the following raw materials:
the PVC layer comprises the following raw materials: 80 parts of PVC resin, 55 parts of plasticizer DOP, 1 part of barium-zinc stabilizer and 1.0 part of dye.
The raw materials of the stabilizing layer comprise: 80 parts of PVC resin, 55 parts of plasticizer DOP, 1 part of barium-zinc stabilizer and 28 parts of calcium carbonate.
The foaming layer comprises the following raw materials: 80 parts of PVC resin, 55 parts of plasticizer DOP, 1 part of potassium-zinc stabilizer, 2.5 parts of VC foaming agent and 1.0 part of dye.
Preparing a sports floor by a PVC-TPU bonding method:
(1) coating and sizing the surface layer, namely, mixing the PVC layer raw materials: mixing PVC resin, a plasticizer, a barium-zinc stabilizer and a dye, melting and refining the mixture at a high temperature to form molten glue, sizing the molten glue by a coating machine at the temperature of 160 ℃ and the vehicle speed of 10m/min, and obtaining a PVC layer after gel shaping;
(2) bonding a cloth base, namely bonding the raw materials of the stabilizing layer: melting PVC resin, a plasticizer, a barium-zinc stabilizer and calcium carbonate at high temperature, smelting into molten gel, coating the molten gel on the surface of the PVC layer prepared in the step (1), and shaping the gel to obtain a stable layer;
(3) coating a foaming layer: foaming layer raw materials: melting PVC resin, a plasticizer, a potassium-zinc stabilizer, a VC foaming agent and dye at high temperature, smelting into molten gel, coating the molten gel on the surface of the stable layer prepared in the step (2), and carrying out gel shaping to obtain a foaming layer;
(4) and (3) TPU (thermoplastic polyurethane) laminating: the PVC-TPU bonding sports floor is prepared by a production method matched with a line laminating machine by taking PVC as a main machine, heating and melting PVC paste resin, placing the heated and melted PVC paste resin in the laminating machine to enable the PVC paste resin and TPU to be compatible to obtain a TPU layer, laminating the prepared TPU layer and the PVC layer, cooling and molding the mixture, and rolling the mixture to obtain the PVC-TPU bonding sports floor, wherein the PVC paste resin is modified 110PVC resin, and the viscosity of a molten mixed solution is controlled to be 5000pa.s and the flow rate is controlled to be 15m/min in the process of coating the PVC paste resin on the TPU through the laminating machine.
Examples 2 to 5
The same as example 1 except that the amounts of the respective raw materials are shown in Table 1.
TABLE 1
Example 6
The difference from example 2 is that polyvinyl chloride paste resin was not added, and the two were directly laminated.
Example 7
The difference from example 2 is that the viscosity of the melt mixture was controlled to 7000pa · s and the flow rate was controlled to 20m/min during the process of coating the polyvinyl chloride paste resin on the TPU by the film coating machine.
Example 8 is the same as example 2 except that the viscosity of the melt mixture was controlled to 8000pa.s and the flow rate was controlled to 20m/min during the process of coating the polyvinyl chloride paste resin on the TPU by the laminator.
The adhesive floorings prepared in examples 1 to 8 were subjected to a performance test.
Detection standard:
GB 18586-2001 harmful substance limit in polyvinyl chloride coiled material floor as indoor decoration and finishing material;
GB/T14833-;
through detection, the flooring materials prepared in examples 1-8 all meet the content requirement of harmful substances specified in GB 18586-. GB/T14833-.
TABLE 2 GB/T14833-
Claims (1)
1. A sports floor adopting a PVC-TPU bonding method is characterized by sequentially comprising a foaming layer, a stabilizing layer, a PVC layer and a TPU layer from bottom to top; wherein the content of the first and second substances,
the PVC layer comprises the following raw materials: PVC resin, plasticizer, barium zinc stabilizer and dye;
the raw materials of the stabilizing layer comprise: PVC resin, a plasticizer, a barium zinc stabilizer and calcium carbonate;
the foaming layer comprises the following raw materials: PVC resin, a plasticizer, a potassium zinc stabilizer, a VC foaming agent and dye;
the TPU layer is a mixture prepared by coating polyvinyl chloride paste resin on the surface of the TUP;
in the TPU layer, the coating thickness of the polyvinyl chloride paste resin coated on the surface of the TUP is 3-5 mm;
the preparation method of the PVC-TPU bonding method sports floor comprises the following steps:
(1) coating and sizing the surface layer, mixing PVC resin, a plasticizer, a barium-zinc stabilizer and dye, melting and refining into molten gel, sizing by a coating machine under the conditions that the temperature is 160-200 ℃ and the vehicle speed is 10-12m/min, and shaping the molten gel to obtain a PVC layer;
(2) cloth base bonding, namely melting and refining PVC resin, a plasticizer, a barium-zinc stabilizer and calcium carbonate into molten gel, coating the molten gel on the surface of the PVC layer prepared in the step (1), and shaping the molten gel to obtain a stable layer;
(3) coating a foaming layer: melting and refining PVC resin, a plasticizer, a potassium-zinc stabilizer, a VC foaming agent and dye into molten gel, coating the molten gel on the surface of the stable layer prepared in the step (2), and shaping the molten gel to obtain a foaming layer;
(4) and (3) TPU (thermoplastic polyurethane) laminating: the PVC is taken as a main machine, a film coating machine is matched with a production method, polyvinyl chloride paste resin is heated and melted, then the polyvinyl chloride paste resin and TPU are placed in the film coating machine to be compatible to obtain a TPU layer, the prepared TPU layer and the PVC layer are pressed, and the obtained TPU layer and the PVC layer are cooled, formed and then rolled to obtain the PVC-TPU bonding sports floor;
the PVC layer comprises the following raw materials in parts by weight: 80-100 parts of PVC resin, 55-65 parts of plasticizer, 1-1.3 parts of barium-zinc stabilizer and 1.0-1.3 parts of dye;
the stabilizing layer comprises the following raw materials in parts by weight: 80-100 parts of PVC resin, 55-65 parts of plasticizer, 1-1.3 parts of barium-zinc stabilizer and 28-35 parts of calcium carbonate;
the foaming layer comprises the following raw materials in parts by weight: 80-120 parts of PVC resin, 55-65 parts of plasticizer, 1.0-1.8 parts of potassium zinc stabilizer, 2.5-3.5 parts of VC foaming agent and 1.0-1.3 parts of dye;
the plasticizer is plasticizer DOP;
the TPU layer and the PVC are bonded by double embossing in the bonding process of the step (4);
and (4) controlling the viscosity of the molten mixed liquid to be 3000-8000pa.s and the flow speed to be 15-20m/min in the film spraying process.
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| CN201911394292.0A CN111119446B (en) | 2019-12-30 | 2019-12-30 | PVC-TPU (polyvinyl chloride-thermoplastic polyurethane) bonding sports floor and preparation method thereof |
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|---|---|---|---|---|
| CN201535053U (en) * | 2009-10-26 | 2010-07-28 | 朱臣市 | Elastic floor |
| CN105437688A (en) * | 2014-09-18 | 2016-03-30 | 厚生股份有限公司 | Manufacture method for TPU-PVC composite material |
| CN105799134A (en) * | 2016-05-04 | 2016-07-27 | 常州中浦化工有限公司 | Modification method and system for improving comprehensive performance of thermoplastic polyurethane |
| CN107471803A (en) * | 2017-09-14 | 2017-12-15 | 惠州伟康新型建材有限公司 | A kind of elastic sound-absorbing PVC floor and preparation method thereof |
| CN110053338A (en) * | 2019-05-15 | 2019-07-26 | 南京新恒鼎体育科技发展有限公司 | One kind behaviour trains floor of examining for the levels |
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| WO2018030705A1 (en) * | 2016-08-10 | 2018-02-15 | 주식회사 녹수 | High-strength multilayered tile and manufacturing method therefor |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535053U (en) * | 2009-10-26 | 2010-07-28 | 朱臣市 | Elastic floor |
| CN105437688A (en) * | 2014-09-18 | 2016-03-30 | 厚生股份有限公司 | Manufacture method for TPU-PVC composite material |
| CN105799134A (en) * | 2016-05-04 | 2016-07-27 | 常州中浦化工有限公司 | Modification method and system for improving comprehensive performance of thermoplastic polyurethane |
| CN107471803A (en) * | 2017-09-14 | 2017-12-15 | 惠州伟康新型建材有限公司 | A kind of elastic sound-absorbing PVC floor and preparation method thereof |
| CN110053338A (en) * | 2019-05-15 | 2019-07-26 | 南京新恒鼎体育科技发展有限公司 | One kind behaviour trains floor of examining for the levels |
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