CN113374215A - Elastic plastic indoor sports floor and preparation method thereof - Google Patents

Elastic plastic indoor sports floor and preparation method thereof Download PDF

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Publication number
CN113374215A
CN113374215A CN202110763165.4A CN202110763165A CN113374215A CN 113374215 A CN113374215 A CN 113374215A CN 202110763165 A CN202110763165 A CN 202110763165A CN 113374215 A CN113374215 A CN 113374215A
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China
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layer
foaming
parts
indoor sports
sports floor
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CN202110763165.4A
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Chinese (zh)
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赵国锋
薛卓军
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Jiangsu Boker New Material Technology Co ltd
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Jiangsu Boker New Material Technology Co ltd
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Priority to CN202110763165.4A priority Critical patent/CN113374215A/en
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    • 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
    • E04F15/02044—Separate elements for fastening to an underlayer
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2471/00—Floor coverings
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08J2327/00—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
    • C08J2327/02—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
    • C08J2327/04—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
    • C08J2327/06—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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Emergency Medicine (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an elastic plastic indoor sports floor and a preparation method thereof, wherein the elastic plastic indoor sports floor comprises a wear-resistant layer, a pressure-resistant layer and a foaming bottom layer which are sequentially compounded from top to bottom, the foaming bottom layer comprises a first foaming layer and a second foaming layer, the first foaming layer is arranged between the pressure-resistant layer and the second foaming layer, the foaming multiplying power of the first foaming layer is lower than that of the second foaming layer, and the resilience elasticity value of the first foaming layer is lower than that of the second foaming layer. The elastic plastic indoor sports floor is reasonable in structure, and a sportsman can ensure shock absorption and support force for the sportsman when bouncing and impacting the floor.

Description

Elastic plastic indoor sports floor and preparation method thereof
Technical Field
The invention relates to the field of foaming materials, in particular to an elastic plastic indoor sports floor and a preparation method thereof.
Background
The foaming material is a foamed substance which is gasified in the substance to generate bubbles to form a porous substance, has the advantages of light weight, high strength, excellent insulating property, remarkable buffering capacity and strong adsorption capacity, and is widely applied to the fields of automobile industry, building industry, packaging industry, agriculture and the like.
The indoor sports flooring mostly comprises a foamed bottom layer, an intermediate pressure-resistant layer and a top wear-resistant layer fixedly connected by coating. The impact forces created by players during sports play act on the surface of the sports floor to generate vibrations, and the structure of the floor must have a vibration-absorbing function, i.e. the floor should have the ability to absorb impact energy, and the rebound impact forces experienced by players on plastic sports floors are much smaller than on hard floors, such as concrete floors.
When the athlete jumps back to the floor, more than 50% of the impact is absorbed by the floor, thereby playing the role of protecting the ankle, meniscus, spinal cord and brain of the athlete and preventing the athlete from being injured during the exercise. The protective function also considers that one person can not affect the adjacent people when moving on the plastic sports floor.
The shock absorption in sports floors is usually realized by a foaming bottom layer, and the foaming bottom layer or the foaming degree in the prior art is too high, so that the foaming bottom layer is too soft and insufficient in support for athletes during sports; or the foaming degree is low, so that the foaming bottom layer is too hard, the shock absorption is insufficient, and the injury to athletes is easy to cause.
Accordingly, there is a need for an improved indoor sports floor in the prior art.
Disclosure of Invention
One of the objectives of the present invention is to overcome the drawbacks of the prior art and to provide an elastic plastic floor for indoor sports, which ensures the shock absorption and the supporting force for athletes when the athletes bounce on the floor.
In order to realize the technical effects, the technical scheme of the invention is as follows: the utility model provides an indoor sports floor of elasticity plastic, includes wearing layer, withstand voltage layer and the foaming bottom of from top to bottom compounding in proper order, the foaming bottom includes first foaming layer and second foaming layer, first foaming layer set up in withstand voltage layer with between the second foaming layer, the foaming multiplying power on first foaming layer is less than the foaming multiplying power on second foaming layer, the resilience elasticity value on first foaming layer is less than the resilience elasticity value on second foaming layer.
The preferable technical scheme is that the foaming multiplying power of the first foaming layer is 2.0-2.5, and the foaming multiplying power of the second foaming layer is 2.5-3.0. Due to the design, the foaming multiplying power of the first foaming layer is lower than that of the second foaming layer, the hardness of the first foaming layer is higher than that of the second foaming layer, and the sportsman is supported well. More preferably, the foaming ratio of the first foamed layer is 2.1 to 2.3, and the foaming ratio of the second foamed layer is 2.8 to 3.0.
The preferable technical scheme is that the rebound elasticity value of the first foaming layer is 20-40%, and the rebound elasticity value of the second foaming layer is 30-50%. Due to the design, the elasticity of the second foaming layer is higher than that of the first foaming layer, and the floor can be completely contracted at the moment of impact so as to ensure the comfort and safety of athletes. More preferably, the first foam layer has a rebound elasticity value of 25 to 35% and the second foam layer has a rebound elasticity value of 35 to 45%.
The preferable technical scheme is that the average cell diameter of the first foaming layer is smaller than the average cell diameter of the second foaming layer, the average cell diameter of the first foaming layer is 0.05-0.1mm, and the average cell diameter of the second foaming layer is 0.08-0.12 mm. More preferably, the average cell diameter of the first foamed layer is 0.06 to 0.08 and the average cell diameter of the second foamed layer is 0.09 to 0.10.
The preferable technical scheme is that the thickness of the first foaming layer is 1.5-5.5mm, the ratio of the thickness of the second foaming layer to the thickness of the first foaming layer is 1-2:1, the thickness of the wear-resistant layer is 0.4-0.8mm, and the thickness of the pressure-resistant layer is 0.4-1.0 mm. More preferably, the thickness of the first foam layer is 3.0 to 4.0 mm.
The preferable technical scheme is that the foaming raw materials of the first foaming layer mainly comprise the following components in parts by weight: 100 parts of a first PVC polymer, 40-50 parts of a plasticizer, 3-5 parts of a foaming agent, 0.5-1 part of a stabilizer and 1-3 parts of color paste;
the foaming raw materials of the second foaming layer mainly comprise the following components in parts by weight: 100 parts of a second PVC polymer, 45-55 parts of a plasticizer, 4-6 parts of a foaming agent, 0.5-1 part of a stabilizer and 1-3 parts of color paste; the average degree of polymerization of the first PVC polymer is 900-1000, and the average degree of polymerization of the second PVC polymer is 1000-1100.
The preferable technical scheme is that the first PVC polymer is a chemical PVC paste resin GP62 for Zhongtai, and the second PVC polymer is a PVC paste resin PR-450 for Tai plastic.
The preferable technical scheme is that the wear-resistant layer is a 100% PVC wear-resistant layer, and the pressure-resistant layer is made of polyvinyl chloride paste resin.
Preferably, the plasticizer is DOTP. DOTP is dioctyl terephthalate, and compared with common diisooctyl phthalate (DOP), the DOTP has the advantages of heat resistance, cold resistance, difficult volatilization, extraction resistance, good flexibility and electrical insulation performance and the like, and is more environment-friendly.
The invention also discloses a preparation method of the elastic plastic indoor sports floor, which comprises the following steps:
s1: preparing raw material components according to a proportion, uniformly stirring a polymer and a plasticizer, then adding a foaming agent, a stabilizer and color paste, uniformly stirring, and finally performing defoaming treatment to respectively obtain a first foaming layer raw material and a second foaming layer raw material;
s2: taking release paper as a base material layer, and sequentially laminating and coating a wear-resistant layer and a pressure-resistant layer;
s3: coating a first foaming layer raw material on the pressure-resistant layer, and baking and cooling at the temperature of 160-165 ℃ to obtain a first foaming layer;
s4: coating a second foaming layer raw material on the first foaming layer, baking at the temperature of 200-220 ℃, and cooling to obtain a second foaming layer.
The invention has the advantages and beneficial effects that: by designing two foaming layers with different foaming multiplying powers and elastic sizes, the second foaming layer with high foaming multiplying power and high elasticity is positioned on the bottom layer, so that the softness transition from the wear-resistant layer to the foaming bottom layer is smoother, and the shock absorption is stronger; the second foaming layer is light and has larger elasticity, the floor can be completely contracted instantly to ensure comfort and safety when being impacted, the first foaming layer still keeps stiff, so that the deformation around the sole is enlarged, the freedom degree during movement is increased, the grip force of the sole is ensured, and the injury risk is reduced to the maximum extent.
Drawings
FIG. 1 is a schematic view of the resilient sports plastic sports floor of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a resilient sports plastic sports floor according to comparative example 1 of the present invention;
FIG. 3 is a schematic structural view of a resilient sports plastic sports floor according to the present invention in comparison to FIG. 3;
in the figure: 1. a wear layer; 2. a pressure-resistant layer; 3. a first foamed layer; 4. a second foamed layer; 5. and a bottom foaming layer.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1, the elastic plastic indoor sports floor of embodiment 1 includes a wear-resistant layer 1, a pressure-resistant layer 2, and a foam bottom layer that are sequentially compounded from top to bottom, where the foam bottom layer includes a first foam layer 3 and a second foam layer 4, the first foam layer 3 is disposed between the pressure-resistant layer 2 and the second foam layer 4, a foaming ratio of the first foam layer 3 is lower than a foaming ratio of the second foam layer 4, and a rebound elasticity value of the first foam layer 3 is lower than a rebound elasticity value of the second foam layer 4.
The expansion ratio of the first foamed layer 3 was 2.2, and the expansion ratio of the second foamed layer 4 was 2.9.
The first foamed layer 3 had a rebound elasticity value of 30%, and the second foamed layer 4 had a rebound elasticity value of 40%.
The average cell diameter of the first foamed layer 3 is 0.065 to 0.07mm, and the average cell diameter of the second foamed layer 4 is 0.09 to 0.095 mm.
The thickness of the first foaming layer 3 is 3.0mm, the thickness of the second foaming layer 4 is 3.0mm, the thickness of the wear-resistant layer 1 is 0.5mm, and the thickness of the pressure-resistant layer 2 is 0.8 mm.
The method for preparing the elastic plastic indoor sports floor of embodiment 1 includes the following steps: the foaming raw materials of the first foaming layer 3 mainly comprise the following components in parts by weight: 100 parts of a first PVC polymer (Zhongtai chemical PVC paste resin GP 62), 40 parts of a plasticizer (Zilu DOTP), 3 parts of a foaming agent (Fuduo AC-T), 1 part of a stabilizer (Addehope 607) and 2 parts of a color paste;
the foaming raw materials of the second foaming layer 4 mainly comprise, by weight: 100 parts of a second PVC polymer (TailuDOTP paste resin PR-450), 45 parts of a plasticizer (ZiluDOTP), 5 parts of a foaming agent (Baoduo AC-T), 1 part of a stabilizer (Addeqer 607) and 2 parts of a color paste;
s1: preparing raw material components according to a proportion, uniformly stirring a polymer and a plasticizer, then adding a foaming agent, a stabilizer and color paste, uniformly stirring, and finally performing defoaming treatment to respectively obtain a first foaming layer raw material and a second foaming layer raw material;
s2: taking release paper as a base material layer, and sequentially laminating and coating a wear-resistant layer and a pressure-resistant layer;
s3: coating a first foaming layer raw material on the pressure-resistant layer, wherein the coating thickness is 1.5mm, and obtaining a first foaming layer through baking at the temperature of 160-165 ℃ (the baking time is 1.5 min) and cooling;
s4: coating a second foaming layer raw material on the first foaming layer, wherein the coating thickness is 1.2mm, and obtaining the second foaming layer through baking at the temperature of 205-210 ℃ (the baking time is 4.5 min) and cooling.
Example 2
Example 2 is based on example 1, except that the foaming ratios of the first foamed layer 3 and the second foamed layer 4 are controlled by controlling the number of parts of the foaming agent under the condition that the baking temperature and the baking time period are not changed: the foaming ratio of the first foaming layer 3 is 2.3, the foaming ratio of the second foaming layer 4 is 3.0, and the foaming raw materials of the first foaming layer 3 and the second foaming layer 4 comprise:
the first foaming layer 3 mainly comprises the following components in parts by weight: 100 parts of a first PVC polymer, 50 parts of a plasticizer, 4 parts of a foaming agent, 1 part of a stabilizer and 2 parts of color paste;
the second foaming layer 4 mainly comprises the following components in parts by weight: 100 parts of a second PVC polymer, 55 parts of a plasticizer, 6 parts of a foaming agent, 1 part of a stabilizer and 2 parts of a color paste.
Example 3
Example 3 is based on example 1 with the difference that the elasticity of the first foamed layer and/or the second foamed layer is changed by changing the raw material type of the PVC polymer, without changing the parts by weight:
the rebound elasticity value of the first foam layer 3 is still 30%; the second PVC polymer was manufactured by the manufacturer's type: it is believed that tk-1300, the second foamed layer 4 has a rebound elasticity value of 50%.
Example 4
Example 4 is based on example 1 with the difference that the average cell diameter is controlled by controlling the temperature at the time of foaming and the foaming time:
the average cell diameter of the first foaming layer 3 is still 0.065-0.07mm, and the average cell diameter of the second foaming layer 4 obtained by baking the raw material of the second foaming layer at 220 ℃ (baking time is 4.5 min) and cooling is 0.115-0.12 mm.
Example 5
Example 5 is based on example 1, except that the thicknesses of the first foamed layer 3 and the second foamed layer 4 were controlled by controlling the thicknesses of the foaming material coatings of the first foamed layer and the second foamed layer, respectively:
the coating thickness of the first foam layer raw material was 2.5mm, the thickness of the first foam layer 3 was 5.5mm, the coating thickness of the second foam layer raw material was 1.9mm, and the thickness of the second foam layer 4 was 5.5 mm.
Comparative example 1
As shown in fig. 2, the plastic indoor sports flooring of comparative example 1 is based on example 1, and comprises a wear-resistant layer 1, a pressure-resistant layer 2 and a foamed bottom layer 5, which are sequentially compounded from top to bottom, wherein the thickness of the foamed bottom layer 5 is 6mm, the thickness of the wear-resistant layer 1 is 0.5mm, and the thickness of the pressure-resistant layer 2 is 0.8 mm.
The foaming raw materials of the foaming bottom layer 5 mainly comprise: 100 parts of first PVC polymer, 40 parts of plasticizer, 3 parts of foaming agent, 1 part of stabilizer and 2 parts of color paste.
Comparative example 1 compared with example 1, the thickness of the foamed primer layer 5 is the sum of the thicknesses of the first foamed layer 3 and the second foamed layer 4, and the foaming material of the foamed primer layer 5 is the foaming material of the first foamed layer 3.
Comparative example 2
Comparative example 2 is based on comparative example 1, with the difference that: the foaming raw materials of the foaming bottom layer 5 mainly comprise: 100 parts of a second PVC polymer, 45 parts of a plasticizer, 5 parts of a foaming agent, 1 part of a stabilizer and 2 parts of color paste.
Comparative example 2 in comparison with example 1, the thickness of the foamed primer layer 5 was the sum of the thicknesses of the first foamed layer 3 and the second foamed layer 4, and the foaming material of the foamed primer layer 5 was the foaming material of the second foamed layer 4.
Comparative example 3
As shown in fig. 3, comparative example 3 is based on comparative example 1, with the difference that: the foaming bottom layer 5 comprises a first foaming layer 3 and a second foaming layer 4; the plastic indoor sports floor comprises a wear-resistant layer 1, a pressure-resistant layer 2, a second foaming layer 4 and a first foaming layer 3 which are sequentially compounded from top to bottom;
the first foaming layer 3 mainly comprises the following components in parts by weight: 100 parts of a first PVC polymer, 40 parts of a plasticizer, 3 parts of a foaming agent, 1 part of a stabilizer and 2 parts of color paste;
the second foaming layer 4 mainly comprises the following components in parts by weight: 100 parts of a second PVC polymer, 45 parts of a plasticizer, 5 parts of a foaming agent, 1 part of a stabilizer and 2 parts of color paste.
Comparative example 3 compared with example 1, the order of lamination of the first foamed layer 3 and the second foamed layer 4 in the plastic indoor sports floor of comparative example 3 is reversed, namely: the wear-resistant layer 1, the pressure-resistant layer 2, the second foaming layer 4 and the first foaming layer 3 are sequentially compounded from top to bottom.
And (3) testing and comparing a finished product:
the test method comprises the following steps:
1. and (3) testing the rebound elasticity value: according to the test standard GB/T10652-2001
2. And (3) testing impact absorption performance: according to test standard DIN18032
3. And (3) hardness measurement: according to the test standard GB/T2411-
4. Residual pit determination: according to the test Standard EN433:1994
The test results of the examples and comparative examples are given in the following table:
detecting items Example 1 Example 2 Example 3 Example 4 Example 5 Comparative example 1 Comparative example 2 Comparative example 3
Rebound elasticity value (%) 28 25 26 24 25 16 20 19
Impact absorption Rate (%) 41 38 37 42 38 28 32 34
Hardness (degree) 72 71 73 71 70 65 68 67
Residual pit (mm) 1.2 1.0 1.3 0.9 1.2 2.8 2.1 2.3
Examples and comparative samples: the hardness of the elastic sports plastic sports floor is sequentially reduced from the top layer to the bottom layer, the floor is subjected to instant impact, the downward pressure sequentially acts on the wear-resistant layer 1, the pressure-resistant layer 2, the first foaming layer 3 and the second foaming layer 4, the wear-resistant layer 1 ensures the friction force between the floor and the soles of athletes, and the pressure-resistant layer 2 ensures the stability of the whole floor; first foaming layer 3 keeps firm for deformation around the sole enlarges, has increased the degree of freedom when moving, has guaranteed sole and has grabbed the land fertility and furthest reduced the injury risk, and second foaming layer 4 is lighter and elasticity is great, can contract completely in order to ensure travelling comfort and security.
The overall performance of the floor boards in the embodiments 1 to 5 is not very different, and the foaming multiplying power, the raw materials, the average cell diameter and the coating thickness can be adjusted according to different requirements of customers (such as the floor board for badminton, the floor board for table tennis and the floor board for volleyball), so that the test standards of the corresponding floor boards are met.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an indoor sports floor of elasticity plastic, its characterized in that, is including wearing layer, withstand voltage layer and the foaming bottom layer of from top to bottom compounding in proper order, the foaming bottom layer includes first foaming layer and second foaming layer, first foaming layer set up in withstand voltage layer with between the second foaming layer, the foaming multiplying power on first foaming layer is less than the foaming multiplying power on second foaming layer, the resilience elasticity value on first foaming layer is less than the resilience elasticity value on second foaming layer.
2. The elastic plastic indoor sports floor as claimed in claim 1, wherein the first foamed layer has a foaming ratio of 2.0-2.5 and the second foamed layer has a foaming ratio of 2.5-3.0.
3. The resilient plastic indoor sports floor of claim 1, wherein the first foam layer has a rebound resilience value of 20-40% and the second foam layer has a rebound resilience value of 30-50%.
4. The resilient plastic indoor sports floor of claim 1, wherein the average cell diameter of the first foamed layer is smaller than the average cell diameter of the second foamed layer; the average cell diameter of the first foaming layer is 0.05-0.1mm, and the average cell diameter of the second foaming layer is 0.08-0.12 mm.
5. The resilient plastic indoor sports floor of claim 1, wherein the thickness of the first foamed layer is 1.5-5.5mm, and the ratio of the thickness of the second foamed layer to the thickness of the first foamed layer is 1-2: 1; the thickness of the wear-resistant layer is 0.4-0.8mm, and the thickness of the pressure-resistant layer is 0.4-1.0 mm.
6. The elastic plastic indoor sports floor as claimed in claim 1, wherein the foaming material of the first foaming layer mainly comprises, in parts by weight: 100 parts of a first PVC polymer, 40-50 parts of a plasticizer, 3-5 parts of a foaming agent, 0.5-1 part of a stabilizer and 1-3 parts of color paste;
the foaming raw materials of the second foaming layer mainly comprise the following components in parts by weight: 100 parts of a second PVC polymer, 45-55 parts of a plasticizer, 4-6 parts of a foaming agent, 0.5-1 part of a stabilizer and 1-3 parts of color paste; the average degree of polymerization of the first PVC polymer is 900-1000, and the average degree of polymerization of the second PVC polymer is 1000-1100.
7. The elastic plastic indoor sports floor as claimed in claim 6, wherein the first PVC polymer is a chemical PVC paste resin GP62 of Zhongtai, and the second PVC polymer is a Taiwan PVC paste resin PR-450.
8. The elastic plastic indoor sports floor as claimed in claim 6, wherein the wear layer is a 100% PVC wear layer, and the pressure layer is made of PVC paste resin.
9. The resilient plastic indoor sports floor of claim 1, wherein the plasticizer is DOTP.
10. The method for preparing a resilient plastic indoor sports floor as claimed in any one of claims 1 to 9, comprising the steps of:
s1: preparing raw material components according to a proportion, uniformly stirring a polymer and a plasticizer, then adding a foaming agent, a stabilizer and color paste, uniformly stirring, and finally performing defoaming treatment to respectively obtain a first foaming layer raw material and a second foaming layer raw material;
s2: taking release paper as a base material layer, and sequentially laminating and coating a wear-resistant layer and a pressure-resistant layer;
s3: coating a first foaming layer raw material on the pressure-resistant layer, and baking and cooling at the temperature of 160-165 ℃ to obtain a first foaming layer;
s4: coating a second foaming layer raw material on the first foaming layer, baking at the temperature of 200-220 ℃, and cooling to obtain a second foaming layer.
CN202110763165.4A 2021-07-06 2021-07-06 Elastic plastic indoor sports floor and preparation method thereof Pending CN113374215A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101190366A (en) * 2006-11-21 2008-06-04 叶宗殷 Sports pad
CN204566845U (en) * 2015-02-16 2015-08-19 优德国际股份有限公司 Shock-absorbing sound insulating pad structure
CN109098392A (en) * 2018-06-22 2018-12-28 北京威廉顺塑胶制品有限公司 A kind of novel rubber and plastic athletic floor and preparation method
CN112443120A (en) * 2020-12-15 2021-03-05 安徽森泰木塑科技地板有限公司 PVC co-extrusion foaming floor and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101190366A (en) * 2006-11-21 2008-06-04 叶宗殷 Sports pad
CN204566845U (en) * 2015-02-16 2015-08-19 优德国际股份有限公司 Shock-absorbing sound insulating pad structure
CN109098392A (en) * 2018-06-22 2018-12-28 北京威廉顺塑胶制品有限公司 A kind of novel rubber and plastic athletic floor and preparation method
CN112443120A (en) * 2020-12-15 2021-03-05 安徽森泰木塑科技地板有限公司 PVC co-extrusion foaming floor and preparation method thereof

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Application publication date: 20210910