WO2017211183A1 - 一种人造草坪支撑垫及其制备方法 - Google Patents

一种人造草坪支撑垫及其制备方法 Download PDF

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Publication number
WO2017211183A1
WO2017211183A1 PCT/CN2017/085639 CN2017085639W WO2017211183A1 WO 2017211183 A1 WO2017211183 A1 WO 2017211183A1 CN 2017085639 W CN2017085639 W CN 2017085639W WO 2017211183 A1 WO2017211183 A1 WO 2017211183A1
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support pad
artificial turf
turf support
main
convex portion
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PCT/CN2017/085639
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English (en)
French (fr)
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朱江峰
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广州傲胜人造草股份有限公司
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
    • 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
    • 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
    • C08J9/12—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 physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/06—CO2, N2 or noble gases
    • 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
    • C08J2203/18—Binary blends of expanding agents
    • C08J2203/184—Binary blends of expanding agents of chemical foaming agent and physical blowing agent, e.g. azodicarbonamide and fluorocarbon
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • 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
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2409/02—Copolymers with acrylonitrile
    • 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
    • C08J2411/00—Characterised by the use of homopolymers or copolymers of chloroprene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • 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
    • C08L2203/00—Applications
    • C08L2203/14—Applications used for foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the invention relates to an artificial turf support pad and a preparation method thereof, and belongs to the technical field of industrial chemistry.
  • the existing artificial turf needs to be fixed to the ground by external force, and must be filled with fillers such as quartz sand and rubber particles to improve the cushioning performance of the artificial turf.
  • the rubber particles are mostly broken particles from used tires, cables, etc. Unfavorable effects have occurred, and at the same time, the cost has increased. At the same time, there are defects in odor and the like, and people inhaling volatile odors are likely to have an impact on health.
  • a first object of the present invention is to provide an artificial turf support pad which has good cushioning performance, and is provided with drainage grooves and drainage holes, and has good drainage performance. .
  • An artificial turf support pad comprises a main bolster; the upper surface of the main slab is provided with a plurality of upper convex portions and upper grooves; the upper convex portions are upwardly convex and evenly spaced on the main slab a surface; the upper groove is formed by a communication between the adjacent two upper convex portions;
  • the lower surface of the main pad is provided with a plurality of lower convex portions and lower grooves; the lower convex portions are convex downward and evenly spaced on the lower surface of the main backing plate; the lower grooves are adjacent Forming a recess between two lower convex portions;
  • the main pad plate is further provided with a vertical through hole; the drain hole is evenly distributed on the main pad; the drain hole communicates with the upper groove and the lower groove.
  • the upper convex portion is a circular upper convex portion.
  • the lower convex portion is a hexagonal lower convex portion.
  • the main backing plate has a thickness of 0.5 to 60 mm.
  • the upper convex portion has a thickness a
  • the lower convex portion has a thickness b; wherein a ⁇ b; further preferably, the upper convex portion has a thickness of 0.1 to 2 mm; and the lower convex portion has a thickness of 2.1 ⁇ 5mm.
  • a second object of the present invention is to provide a method for preparing the artificial turf support pad described above, which does not use rubber particles, is molded at one time, and has an excellent cushioning performance of the artificial turf support pad, and has high preparation efficiency.
  • the method for preparing the artificial turf support pad described above comprises the following steps:
  • the raw material described in the step 1) is prepared by a kettle press method or an extrusion method to obtain expanded polypropylene particles;
  • the rubber toughening agent is one of polyethylene, ethylene-vinyl acetate copolymer, nitrile rubber, natural rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, neoprene rubber and ethylene propylene rubber.
  • nitrile rubber natural rubber
  • styrene butadiene rubber butadiene rubber
  • isoprene rubber neoprene rubber
  • ethylene propylene rubber ethylene propylene rubber
  • the blowing agent is one or a mixture of at least two of an azo compound, a sulfonyl hydrazide compound, a nitroso compound, a carbonate, carbon dioxide, and nitrogen.
  • the processing aid is at least one of an antioxidant, an anti-UV additive, a lubricant, and a nucleating agent.
  • the artificial turf support pad obtained in the step 3) has a density of 12 to 75 kg/m 3 ; more preferably, the density is 30 to 50 kg/m 3 .
  • the cells of the artificial turf support pad obtained in the step 3) are closed-cell structures, and the closed cell ratio is ⁇ 95%.
  • the plurality of upper convex portions of the artificial turf support pad of the present invention are independent of each other, and a buffer gap is formed therebetween, and the buffering principle of the lower convex portion is the same as that of the upper convex portion, and the upper convex portion and the lower convex portion have a double buffering effect.
  • the gap between the upper convex portions is an upper groove
  • the gap between the lower convex portions is a lower groove, and communicates through the drainage hole to function as a drainage guide;
  • the artificial turf support pad structure of the invention also simplifies the preparation process and improves the production efficiency; the preparation does not need to add fillers such as quartz sand and rubber particles, thereby reducing the production cost.
  • Figure 1 is a schematic view showing the structure of the upper surface of the artificial turf support pad of the present invention
  • FIG. 2 is a schematic structural view of a lower surface of an artificial turf support pad of the present invention.
  • an artificial turf support pad includes a main backing plate 1; the main backing plate 1 has a thickness of 0.5 to 60 mm;
  • the upper surface of the main pad 1 is provided with a plurality of upper convex portions 11 and upper grooves 12; the upper convex portions 11 are upwardly convex and evenly spaced on the upper surface of the main backing plate 1; the upper grooves 12 is formed by the communication between the adjacent two upper convex portions 11;
  • the lower surface of the main backing plate 1 is provided with a plurality of lower convex portions 13 and lower grooves 14; the lower convex portions 13 are convex downward and evenly spaced on the lower surface of the main backing plate 1;
  • the groove 14 is formed by the communication between the adjacent two lower convex portions 13;
  • the thickness of the upper convex portion 11 is 0.1 to 2 mm; the thickness of the lower convex portion 13 is 2.1 to 5 mm; the height of the upper convex portion 11 is small, which does not affect the effect of the user when moving on the cushion, and the lower convex portion The height of 13 is higher, which increases the efficiency of drainage;
  • the main backing plate 1 is further provided with a vertically penetrating drainage hole 15; the drainage hole 15 is evenly distributed on the main backing plate 1; the drainage hole 15 communicates with the upper groove 12 and the lower groove 14.
  • the upper convex portion 11 is designed as a circular upper convex portion, which has uniform force and small thickness, and does not affect the effects of pedaling and use.
  • the upper groove 12 formed between the upper convex portions 11 has a sufficient width to facilitate drainage;
  • the lower convex portion 13 is designed as a hexagonal lower convex portion, and the force is uniform.
  • the lower groove 14 having the same width is naturally formed to save the area, and the layout shape of the lower groove 14 is easy to collect the water flowing in each direction. It is also easy to flow the water, and the thickness of the lower convex portion 13 is high, which increases the efficiency of drainage.
  • the artificial turf support pad described above is obtained by the following preparation method:
  • the rubber toughening agent is one or at least one of polyethylene, ethylene-vinyl acetate copolymer, nitrile rubber, natural rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, neoprene rubber and ethylene propylene rubber. a mixture of two.
  • the blowing agent is one or a mixture of at least two of an azo compound, a sulfonyl hydrazide compound, a nitroso compound, a carbonate, carbon dioxide, and nitrogen.
  • the processing aid is at least one of an antioxidant, an anti-UV additive, a lubricant, and a nucleating agent;
  • the raw material described in the step 1) is prepared by a kettle press method or an extrusion method to obtain expanded polypropylene particles;
  • the foamed polypropylene particles obtained in the step 2) are hot-pressed by a mold to obtain an artificial turf support pad, and the density of the artificial turf support pad is 12 to 75 kg/m 3 ; the cells of the support pad are closed-cell structures, closed The porosity is ⁇ 95%.
  • the cross-linking modification of the polypropylene by the autoclave method or the extrusion method greatly improves the melt strength of the polypropylene and has a high closed cell ratio; the closed cells make the support mat have superior resilience performance, and The pressure withstand time is long and the deformation rate is low.
  • an artificial turf support pad including a main backing plate 1; the main backing plate 1 has a thickness of 20 mm;
  • the upper surface of the main pad 1 is provided with a plurality of circular upper convex portions 11 and upper grooves 12; the circular upper convex portions 11 are upwardly convex and evenly spaced on the upper surface of the main backing plate 1;
  • the groove 12 is formed by the communication between the adjacent two circular upper convex portions 11;
  • the lower surface of the main backing plate 1 is provided with a plurality of hexagonal lower convex portions 13 and lower grooves 14; the hexagonal lower convex portions 13 are convex downward and evenly spaced on the lower surface of the main backing plate 1;
  • the lower groove 14 is formed by the communication between the adjacent two hexagonal lower convex portions 13;
  • the circular upper convex portion 11 has a thickness of 0.2 mm, and the hexagonal lower convex portion 13 has a thickness of 2.5 mm; the main backing plate 1 is further provided with a vertically penetrating drainage hole 15; the drainage hole 15 is evenly distributed. On the main pad 1; the drain hole 15 communicates with the upper groove 12 and the lower groove 14.
  • the main pad 1 is laid on the ground, and the hexagonal lower convex portion 13 is in contact with the ground; when the person moves on the main pad 1, the main pad 1 is pressed, and the circular upper convex portion is pressed. 11 and the hexagonal lower convex portion 13 buffers the pressure, since the plurality of circular upper convex portions 11 are spaced apart and do not contact each other, there is a gap therebetween, which facilitates dispersing and unloading the pressure; the hexagonal lower convex portion 13
  • the principle of cushioning is the same as that of the circular upper convex portion 11.
  • the water flows to the main backing plate 1, is guided by the upper groove 12, then flows through the drain hole 15 to the lower groove 14, and then discharges the water to the drain port of the ground through the lower groove 14.
  • Table 1 The thickness of the main backing plate, the upper convex portion and the lower convex portion of Embodiment 1-3
  • Example 1 Example 2 Example 3 Main pad thickness (mm) 20 30 40 Upper convex thickness (mm) 0.2 1 2 Lower convex thickness (mm) 2.5 3 4
  • Example 1 Example 2 Example 3 Upper groove water flow rate (m/s) 0.5 0.7 1 Lower groove water flow rate (m/s) 1 1.3 1.5
  • a method for preparing an artificial turf support pad comprises the following steps:
  • the raw material described in the step 1) is prepared by a kettle press method or an extrusion method to obtain expanded polypropylene particles;
  • a method for preparing an artificial turf support pad comprises the following steps:
  • the raw material described in the step 1) is prepared by a kettle press method or an extrusion method to obtain expanded polypropylene particles;
  • a method for preparing an artificial turf support pad comprises the following steps:
  • the foamed polypropylene particles obtained in the step 2) are subjected to hot press molding of the raw material described in the step 1) through a mold to obtain an artificial turf support mat.
  • Example 4 Example 5
  • Example 6 Density (kg/m 3 ) 35 44 48 Impact strength (J/m 2 ) 152 225 251

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Abstract

一种人造草坪支撑垫及其制备方法，人造草坪支撑垫包括主垫板（1），主垫板（1）的上表面设有若干个上凸部（11）和上沟槽（12），主垫板（1）的下表面设有若干个下凸部（13）和下沟槽（14），主垫板（1）上还均匀分布有设有垂直贯穿的排水孔（15），排水孔（15）连通上沟槽（12）和下沟槽（14）；制备方法包括：1）按重量百分比备料；2）采用釜压法或挤出法制备得到发泡聚丙烯粒子；3）通过模具将步骤2）获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。该人造草坪支撑垫缓冲和排水性好，制备效率高。

Description

一种人造草坪支撑垫及其制备方法 技术领域
本发明涉及一种人造草坪支撑垫及其制备方法，属于工业化学技术领域。
背景技术
随着户外运动的推广和发展，人们喜欢自然环境，而由于天然草坪受季节性的影响，在秋冬季节容易枯萎，所以人造草坪以易安装和耐用为特点，逐渐得到广泛的使用。现有的人造草坪需要借助外力固定于地面，都必须填充石英砂、橡胶粒子等填充物，以提高人造草坪的缓冲性能，而橡胶粒子大多是来自废旧轮胎、电缆等的破碎粒子，给环境带来了不利的影响，同时增加了成本，同时，在气味性等方面都有缺陷，人们吸入挥发性的气味容易对健康造成影响。
发明内容
为了克服现有技术的不足，本发明的第一个目的在于提供一种人造草坪支撑垫，该人造草坪支撑垫具有良好的缓冲性能，并设有排水沟槽和排水孔，具有良好的排水性能。
实现本发明的目的可以通过采取如下技术方案达到：
一种人造草坪支撑垫，包括主垫板；所述主垫板的上表面设有若干个上凸部和上沟槽；所述上凸部向上凸起并均匀间隔分布在主垫板的上表面；所述上沟槽由相邻的两个上凸部之间的凹陷处相连通所形成；
所述主垫板的下表面设有若干个下凸部和下沟槽；所述下凸部向下凸起并均匀间隔分布在主垫板的下表面；所述下沟槽由相邻的两个下凸部之间的凹陷处连通所形成；
所述主垫板上还设有垂直贯穿的排水孔；所述排水孔均匀分布在主垫板上；所述排水孔连通上沟槽和下沟槽。
作为优选，所述上凸部为圆形上凸部。
作为优选，所述下凸部为六角形下凸部。
作为优选，所述主垫板的厚度为0.5～60mm。
作为优选，所述上凸部的厚度为a，下凸部的厚度为b；其中a<b；再优选地，所述上凸部的厚度为0.1～2mm；所述下凸部的厚度为2.1～5mm。
本发明的第二个目的是为了提供一种上述人造草坪支撑垫的制备方法，该方法不使用橡胶粒子，一次成型并使得人造草坪支撑垫具有良好的缓冲性能，制备效率高。
实现本发明的目的可以通过采取如下技术方案达到：
上述的人造草坪支撑垫的制备方法，包括以下步骤：
1)按重量百分比计准备如下原料：
Figure PCTCN2017085639-appb-000001
上述原料的重量百分比之和为100％；
2)将步骤1)所述的原料采用釜压法或挤出法制备得到发泡聚丙烯粒子；
3)通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。
作为优选，所述橡胶增韧剂为聚乙烯、乙烯-醋酸乙烯酯共聚物、丁腈橡胶、天然橡胶、丁苯橡胶、顺丁橡胶、异戊橡胶、氯丁橡胶和乙丙橡胶中的一种或至少两种的混合物。
作为优选，所述发泡剂为偶氮类化合物、磺酰肼类化合物、亚硝基化合物、碳酸盐、二氧化碳和氮气中的一种或至少两种的混合物。
作为优选，所述加工助剂为抗氧剂、抗紫外助剂、润滑剂和成核剂中的至少一种。
作为优选，所述步骤3)获得的人造草坪支撑垫的密度为12～75kg/m3；再优选地，密度为30～50kg/m3。
作为优选，所述步骤3)获得的人造草坪支撑垫的泡孔为闭孔结构，闭孔率≥95％。
相比现有技术，本发明的有益效果在于：
1、本发明的人造草坪支撑垫中若干个上凸部互相独立，之间形成缓冲的间隙，下凸部的缓冲原理与上凸部相同，上凸部和下凸部起到双重缓冲的效果；同时，在上凸部之间的间隙处为上沟槽，下凸部之间的间隙处为下沟槽，并通过排水孔进行连通，起到排水导流的作用；
2、本发明的人造草坪支撑垫结构也简化了制备工艺，提高了生产效率；制备时无需添加石英砂、橡胶粒子等填充物，减少了生产成本。
附图说明
图1为本发明人造草坪支撑垫的上表面结构示意图；
图2为本发明人造草坪支撑垫的下表面结构示意图；
其中，1、主垫板；11、上凸部；12、上沟槽；13、下凸部；14、下沟槽；15、排水孔。
具体实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述：
参照图1并结合图2，一种人造草坪支撑垫，包括主垫板1；主垫板1的厚度为0.5～60mm；
所述主垫板1的上表面设有若干个上凸部11和上沟槽12；所述上凸部11向上凸起并均匀间隔分布在主垫板1的上表面；所述上沟槽12由相邻的两个上凸部11之间的凹陷处相连通所形成；
所述主垫板1的下表面设有若干个下凸部13和下沟槽14；所述下凸部13向下凸起并均匀间隔分布在主垫板1的下表面；所述下沟槽14由相邻的两个下凸部13之间的凹陷处连通所形成；
所述上凸部11的厚度为0.1～2mm；所述下凸部13的厚度为2.1～5mm；上凸部11的高度小，不影响使用者在软垫上活动时的效果，而下凸部13的高度较高，增大了排水的效率；
所述主垫板1上还设有垂直贯穿的排水孔15；所述排水孔15均匀分布在主垫板1上；所述排水孔15连通上沟槽12和下沟槽14。
上凸部11设计为圆形上凸部，其受力均匀，厚度较小，不影响踩踏和使用的效果，上凸部11之间所形成的上沟槽12具有足够的宽度，利于排水；而下凸部13设计为六角形下凸部，其受力均匀，均匀排列时自然形成宽度相同的下沟槽14，节省面积，下沟槽14的布局形状容易汇集在每个方向流入的水，也容易将水分流，下凸部13的厚度较高，增大了排水的效率。
上述的人造草坪支撑垫，通过以下制备方法获得：
1)按重量百分比计准备如下原料：
Figure PCTCN2017085639-appb-000002
上述原料的重量百分比之和为100％；
所述橡胶增韧剂为聚乙烯、乙烯-醋酸乙烯酯共聚物、丁腈橡胶、天然橡胶、丁苯橡胶、顺丁橡胶、异戊橡胶、氯丁橡胶和乙丙橡胶中的一种或至少两种的混合物。
所述发泡剂为偶氮类化合物、磺酰肼类化合物、亚硝基化合物、碳酸盐、二氧化碳和氮气中的一种或至少两种的混合物。
所述加工助剂为抗氧剂、抗紫外助剂、润滑剂和成核剂中的至少一种；
2)将步骤1)所述的原料采用釜压法或挤出法制备得到发泡聚丙烯粒子；
3)通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫，人造草坪支撑垫的密度为12～75kg/m3；支撑垫的泡孔为闭孔结构，闭孔率≥95％。
通过釜压法或挤出法，对聚丙烯进行了交联改性，大幅度提高了聚丙烯的熔体强度，且具有高闭孔率；闭孔使得支撑垫具有优越的回弹性能，而且耐压时间长且变形率低。
实施例1：
参照图1并结合图2，一种人造草坪支撑垫，包括主垫板1；主垫板1的厚度为20mm；
所述主垫板1的上表面设有若干个圆形上凸部11和上沟槽12；所述圆形上凸部11向上凸起并均匀间隔分布在主垫板1的上表面；所述上沟槽12由相邻的两个圆形上凸部11之间的凹陷处相连通所形成；
所述主垫板1的下表面设有若干个六角形下凸部13和下沟槽14；所述六角形下凸部13向下凸起并均匀间隔分布在主垫板1的下表面；所述下沟槽14由相邻的两个六角形下凸部13之间的凹陷处连通所形成；
所述圆形上凸部11的厚度为0.2mm，六角形下凸部13的厚度为2.5mm；所述主垫板1上还设有垂直贯穿的排水孔15；所述排水孔15均匀分布在主垫板1上；所述排水孔15连通上沟槽12和下沟槽14。
使用时，将主垫板1平铺在地面上，六角形下凸部13与地面相接触；当人在主垫板1上活动时，对主垫板1产生压力，而圆形上凸部11和六角形下凸部13对压力进行缓冲，由于若干圆形上凸部11为间隔分布，并互不接触，之间有空隙，利于将压力分散并卸出；六角形下凸部13的缓冲原理与圆形上凸部11相同。水流流至主垫板1上，通过上沟槽12导流，然后经过排水孔15流至下沟槽14，再通过下沟槽14将水流导至地面的排水口排出。
实施例2-3：
按以下表1中指定的主垫板1、上凸部11和下凸部13的厚度，分别得到不同的人造草坪支撑垫，其余结构和特征与实施例1相同。
表1实施例1-3的主垫板、上凸部和下凸部的厚度
  实施例1 实施例2 实施例3
主垫板厚度(mm) 20 30 40
上凸部厚度(mm) 0.2 1 2
下凸部厚度(mm) 2.5 3 4
将实施例1-3的人造草坪支撑垫通入水流，对上沟槽12和下沟槽14的水流流速进行检测，测试其排水效果，结果如表2所示：
表2实施例1-3的上沟槽与下沟槽中的水流流速
  实施例1 实施例2 实施例3
上沟槽水流流速(m/s) 0.5 0.7 1
下沟槽水流流速(m/s) 1 1.3 1.5
实施例4：
一种人造草坪支撑垫的制备方法，包括以下步骤：
1)按重量百分比计准备如下原料：
Figure PCTCN2017085639-appb-000003
2)将步骤1)所述的原料采用釜压法或挤出法制备得到发泡聚丙烯粒子；
3)通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。
实施例5：
一种人造草坪支撑垫的制备方法，包括以下步骤：
1)按重量百分比计准备如下原料：
Figure PCTCN2017085639-appb-000004
2)将步骤1)所述的原料采用釜压法或挤出法制备得到发泡聚丙烯粒子；
3)通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。
实施例6：
一种人造草坪支撑垫的制备方法，包括以下步骤：
1)按重量百分比计准备如下原料：
Figure PCTCN2017085639-appb-000005
Figure PCTCN2017085639-appb-000006
2)采用釜压法或挤出法制备得到发泡聚丙烯粒子；
3)将步骤1)所述的原料通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。
对实施例4-6获得的人造草坪支撑垫进行密度和冲击强度的检测，检测结果如表3所示：
表3实施例4-6密度和冲击强度的检测结果
  实施例4 实施例5 实施例6
密度(kg/m3) 35 44 48
冲击强度(J/m2) 152 225 251
对于本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及变形，而所有的这些改变以及变形都应该属于本发明权利要求的保护范围之内。

Claims (10)

  1. 一种人造草坪支撑垫，包括主垫板；其特征在于：所述主垫板的上表面设有若干个上凸部和上沟槽；所述上凸部向上凸起并均匀间隔分布在主垫板的上表面；所述上沟槽由相邻的两个上凸部之间的凹陷处相连通所形成；
    所述主垫板的下表面设有若干个下凸部和下沟槽；所述下凸部向下凸起并均匀间隔分布在主垫板的下表面；所述下沟槽由相邻的两个下凸部之间的凹陷处连通所形成；
    所述主垫板上还设有垂直贯穿的排水孔；所述排水孔均匀分布在主垫板上；所述排水孔连通上沟槽和下沟槽。
  2. 如权利要求1所述的人造草坪支撑垫，其特征在于：所述上凸部为圆形上凸部。
  3. 如权利要求1所述的人造草坪支撑垫，其特征在于：所述下凸部为六角形下凸部。
  4. 如权利要求1所述的人造草坪支撑垫，其特征在于：所述主垫板的厚度为0.5～60mm。
  5. 如权利要求1所述的人造草坪支撑垫，其特征在于：所述上凸部的厚度为a，下凸部的厚度为b；其中a<b。
  6. 一种如权利要求1所述的人造草坪支撑垫的制备方法，其特征在于包括以下步骤：
    1)按重量百分比计准备如下原料：
    Figure PCTCN2017085639-appb-100001
    2)将步骤1)所述的原料采用釜压法或挤出法制备得到发泡聚丙烯粒子；
    3)通过模具将步骤2)获得的发泡聚丙烯粒子热压成型，得到人造草坪支撑垫。
  7. 如权利要求6所述的人造草坪支撑垫的制备方法，其特征在于：所述橡胶增韧剂为聚乙烯、乙烯-醋酸乙烯酯共聚物、丁腈橡胶、天然橡胶、丁苯橡胶、顺丁橡胶、异戊橡胶、氯丁橡胶和乙丙橡胶中的一种或至少两种的混合物。
  8. 如权利要求6所述的人造草坪支撑垫的制备方法，其特征在于：所述发泡剂为偶氮类化合物、磺酰肼类化合物、亚硝基化合物、碳酸盐、二氧化碳和氮气中的一种或至少两种的混合物。
  9. 如权利要求6所述的人造草坪支撑垫的制备方法，其特征在于：所述加工助剂为抗氧剂、抗紫外助剂、润滑剂和成核剂中的至少一种。
  10. 如权利要求6所述的人造草坪支撑垫的制备方法，其特征在于：所述步骤3)获得的人造草坪支撑垫的密度为12～75kg/m3。
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