CN115449048A - Composite polyurethane runway surface layer and construction process thereof - Google Patents

Composite polyurethane runway surface layer and construction process thereof Download PDF

Info

Publication number
CN115449048A
CN115449048A CN202211135492.6A CN202211135492A CN115449048A CN 115449048 A CN115449048 A CN 115449048A CN 202211135492 A CN202211135492 A CN 202211135492A CN 115449048 A CN115449048 A CN 115449048A
Authority
CN
China
Prior art keywords
rubber powder
parts
component
polyurethane
surface layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211135492.6A
Other languages
Chinese (zh)
Inventor
韩正荣
刘德春
汤四清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Changnuo Sports Advanced Materials Co ltd
Original Assignee
Jiangsu Changnuo Sports Advanced Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Changnuo Sports Advanced Materials Co ltd filed Critical Jiangsu Changnuo Sports Advanced Materials Co ltd
Priority to CN202211135492.6A priority Critical patent/CN115449048A/en
Publication of CN115449048A publication Critical patent/CN115449048A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/44—Polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • E01C13/06—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003
    • E01C13/065—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003 at least one in situ layer consisting of or including bitumen, rubber or plastics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to the technical field of sports tracks, in particular to a composite polyurethane track surface layer and a construction process thereof. The composite polyurethane runway surface layer comprises a paving bottom layer, a polyurethane elastic layer and a surface layer which are sequentially paved from top to bottom. The polyurethane elastic layer comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight: 10-30 parts of polyether polyol, 15-30 parts of MDI trimer and 10-20 parts of diluent; the component B comprises the following components in percentage by weight based on the total weight of the component B: 20-40 parts of polycarbonate diol, 5-10 parts of chain extender, 2-10 parts of triethylamine, 10-30 parts of water and 30-50 parts of oxidized rubber powder, wherein the particle size of the oxidized rubber powder is 80-100 meshes. By arranging the three-layer composite structure, improving the raw material ratio of the two-component polyurethane and adding 80-100 meshes of oxidized rubber powder, the effect of improving the lasting stability of the mechanical property of the polyurethane track is achieved.

Description

Composite polyurethane runway surface layer and construction process thereof
Technical Field
The invention relates to the technical field of sports tracks, in particular to a composite polyurethane track surface layer and a construction process thereof.
Background
The sports track is the best choice of people when running for body building, and the sports track with excellent quality can improve the experience value of people when running and simultaneously reduce the falling injury rate of people when running. The polyurethane track has the advantages of high elastic performance, high compressive strength, proper hardness and the like.
However, after the polyurethane track is used for a long time, the elastic recovery capability of the polyurethane elastic layer is reduced, so that the polyurethane elastic layer of the polyurethane track is easy to fatigue, and the mechanical properties such as elasticity, tensile strength and breaking strength are weakened, so that legs are easy to ache and fatigue when people run; and the deterioration problems such as peeling and the like of the polyurethane track can be caused, and the service life of the polyurethane track is shortened.
In view of the above-mentioned related art, in order to prolong the service life of the polyurethane track, the inventors thought that it was necessary to invent a polyurethane track capable of maintaining stable mechanical properties for a long time.
Disclosure of Invention
In order to improve the lasting stability of the mechanical property of the polyurethane track, the application provides a composite polyurethane track surface layer and a construction process thereof.
In a first aspect, the present application provides a composite polyurethane track surface layer, which adopts the following technical scheme:
the utility model provides a compound polyurethane runway surface course, includes bottom, polyurethane elastic layer and the top layer of mating formation that top-down laid in proper order, the bottom of mating formation bonds with ground mutually, the polyurethane elastic layer includes A component and B component, according to the gross weight of A component, and A component includes the following parts by weight's component: 10-30 parts of polyether polyol, 15-30 parts of MDI trimer and 10-20 parts of diluent; the component B comprises the following components in parts by weight based on the total weight of the component B: 20-40 parts of polycarbonate diol, 5-10 parts of a chain extender, 2-10 parts of triethylamine, 10-30 parts of water and 30-50 parts of oxidized rubber powder, wherein the particle size of the oxidized rubber powder is 80-100 meshes.
The composite runway surface layer obtained by adopting the mode of combining the three layers of the paving bottom layer, the polyurethane elastic layer and the surface layer has the characteristics of stable structure, good performance and the like. The bottom layer of paving bonds with ground, has solved the unevenness's of ground problem. The pavement bottom layer has certain mechanical strength after being cured, so that the composite polyurethane track surface layer is endowed with certain impact resistance and stability. The polyurethane elastic layer is used as the middle layer of the surface layer of the composite polyurethane track, and has excellent elasticity and toughness, so that the track has excellent elasticity and fatigue resistance. When the polyurethane elastic layer is directly used as a surface layer, the polyurethane elastic layer is directly contacted with the external environment, so that the polyurethane elastic layer is easily damaged or deteriorated. Therefore, when the surface layer is arranged on the polyurethane elastic layer, the surface layer can play a role in protecting the polyurethane elastic layer, so that the polyurethane elastic layer can have long-term stable mechanical properties. Meanwhile, the surface layer has certain roughness, so that falling injury caused by slipping of people in the exercise process can be reduced.
The inventor finds that the polyurethane with moderate flexibility and strength can be obtained according to the proportion of the polyether polyol in the component A and the polycarbonate diol in the component B. MDI tripolymer is used as isocyanate for preparing the polyurethane material, and prepolymer is synthesized firstly. The diluent is added into the component A, so that the agglomeration of MDI tripolymer can be effectively prevented, and the quality of the polyurethane material is improved. And a chain extender is added into the component B, so that the mechanical property of the polyurethane material can be further improved. The bi-component polyurethane elastomer prepared according to the component proportion provided by the application has excellent impact resistance and tensile force, and meanwhile, has better elasticity, and can provide better mechanical property for a composite polyurethane track surface layer.
After the polyurethane elastic layer is used for a long time, cracks are generated in the internal structure of the polyurethane elastic layer due to external force, so that the mechanical properties such as elasticity, tensile strength and breaking strength of the composite polyurethane runway surface layer are weakened. Therefore, the oxidized rubber powder is added, the surface of the oxidized rubber powder has a large number of active groups, the polarity is strong, the oxidized rubber powder has higher surface energy, the oxidized rubber powder has better associativity with the internal structure of polyurethane, and the oxidized rubber powder can form chemical connection with polyurethane molecules. Because the oxidized rubber powder has better toughness and elasticity, the introduction of the oxidized rubber powder can reduce the cracks in the polyurethane elastic layer, thereby effectively improving the stability of the mechanical properties of the composite polyurethane runway surface layer, such as elasticity, impact resistance and the like. When the particle size of the oxidized rubber powder is too large, the roughness of the polyurethane elastic layer can be improved, so that the experience of people in running is poor. When the particle size of the oxidized rubber powder is too small, the oxidized rubber powder cannot play a role in improving the elasticity, impact resistance and other mechanical properties of the composite polyurethane track. The inventor finds that the 80-100 mesh polyurethane elastic layer can have proper roughness, and meanwhile, the invention also plays a role in improving the elastic recovery performance and the fatigue resistance of the polyurethane elastic layer.
Therefore, the three-layer composite structure is arranged, the raw material proportion of the two-component polyurethane is improved, and 80-100 meshes of oxidized rubber powder is added, so that the effect of improving the lasting stability of the mechanical property of the polyurethane track is achieved. Moreover, the problems of aging or deterioration of the polyurethane elastic layer and the like can be reduced, and cracks generated inside the polyurethane elastic layer can be reduced.
In a specific embodiment, the oxidized rubber powder is prepared by adopting the following components in parts by weight based on the total weight of the oxidized rubber powder: 100-120 parts of waste rubber powder, 50-100 parts of aqueous hydrogen peroxide solution and 50-100 parts of aqueous sodium hypochlorite solution.
The waste rubber powder is activated and oxidized by using the oxidation-reduction property of the aqueous hydrogen peroxide solution and the aqueous sodium hypochlorite solution, and active groups such as hydroxyl, carbonyl and the like are constructed on the surface of the waste rubber powder, so that the surface of the waste rubber powder has activity or polarity, the oxidized rubber powder has better bonding property, and the bonding degree of the oxidized rubber powder in the internal structure of polyurethane is improved.
In a specific possible embodiment, the oxide rubber powder further comprises 20-30 parts of a coupling agent and 30-50 parts of whiskers, wherein the whiskers are at least one of calcium carbonate whiskers, zinc oxide whiskers or aluminum borate whiskers.
The oxide rubber powder has strong van der Waals force, so the oxide rubber powder can be agglomerated to form larger particles, and the agglomerated oxide rubber powder is added into the polyurethane elastic material, so that the elasticity of the polyurethane is reduced. Coupling agent and whisker have still been added in this application, the whisker can be through coupling agent coupling when the rubber powder surface, the whisker is located between the adjacent rubber powder, increase the distance between the adjacent rubber powder, consequently can reduce the van der waals' force between the oxidation rubber powder, help improving the dispersibility of oxidation rubber powder, thereby the dispersion that oxidation rubber powder can be better is in the polyurethane elastic layer, further improves the elasticity and the fatigue resistance of polyurethane elastic layer, reduces the inside crackle that produces of polyurethane elastic layer.
Meanwhile, the whiskers also have anisotropy, high strength and high elongation, so that after the whiskers are connected with polyurethane in the polyurethane elastic layer, the toughness and tensile resistance of the polyurethane elastic layer can be improved, and cracks generated inside the polyurethane elastic layer can be reduced.
In a specific embodiment, the paving base is asphalt concrete.
By adopting the technical scheme, the bottom layer with a smooth surface can be paved by using the asphalt concrete, and the improvement of the smoothness of the polyurethane elastic layer and the surface layer is facilitated. Moreover, the asphalt concrete has higher hardness after being cured, and the paved bottom layer paved by the asphalt concrete can stably support the polyurethane elastic layer and the surface layer, prevent the polyurethane elastic layer and the surface layer from sinking, prevent the polyurethane elastic layer from migrating, and improve the overall stability of the composite polyurethane runway surface layer.
In a specific embodiment, the skin layer comprises the following components in parts by weight, based on the total weight of the skin layer: 80-100 parts of surface rubber and 30-50 parts of ethylene propylene diene monomer particles.
By adopting the technical scheme, the ethylene propylene diene monomer particles have the effects of deodorization, corrosion resistance and the like, the surface layer can have the effects of water resistance, corrosion resistance and the like by mixing the ethylene propylene diene monomer particles with the surface glue, and meanwhile, the ethylene propylene diene monomer particles also have certain hardness, so that the roughness of the surface layer of the runway can be improved.
In a second aspect, the application provides a construction process of a composite polyurethane runway surface layer, which adopts the following technical scheme:
a construction process of a composite polyurethane runway surface layer comprises the following steps,
p1, paving a paving bottom layer on the roadbed;
p2, heating polyether polyol in the component A to 50-80 ℃ in a vacuum environment according to a ratio, adding MDI tripolymer and a diluent, uniformly stirring, heating to 90-100 ℃, discharging after bubble discharge to obtain the component A; according to the proportion, in a vacuum environment, heating the polycarbonate diol in the component B to 50-80 ℃, adding a chain extender, triethylamine, water and oxidized rubber powder, uniformly stirring, heating to 90-100 ℃, discharging after bubbles are discharged, and obtaining the component B; uniformly mixing the component A and the component B to obtain a polyurethane elastic material; uniformly paving a polyurethane elastic material on the surface of the paving bottom layer, and curing to obtain a polyurethane elastic layer;
and P3, uniformly mixing the surface rubber and the ethylene propylene diene monomer rubber particles, uniformly spraying the mixture on the polyurethane elastic layer, curing to obtain a surface layer, and removing impurities on the surface layer to obtain the composite polyurethane track surface layer.
Through adopting above-mentioned technical scheme, when laying polyurethane elastic layer and top layer for polyurethane elastic layer and top layer all have even thickness, and the composite polyurethane runway surface course that obtains at last has the planarization. The component A is prepared in a vacuum environment, so that MDI tripolymer can be prevented from reacting with moisture in the air, and the loss of the MDI elastomer is reduced. After the MDI trimer and the polyether polyol are subjected to prepolymerization reaction, the reaction temperature is increased to 90-100 ℃, and the chain termination reaction can be started, so that the polycondensation reaction is stopped.
In the preparation process of the component B, the oxidized rubber powder is added to blend the oxidized rubber powder with other components of the component B, so that the oxidized rubber powder plays a role in improving the mechanical property in the polyurethane material. And triethylamine is added into the component B, and when the component B is mixed with the component A, the isocyanic acid radical can be blocked, so that the stability of the composite polyurethane runway surface layer is improved. Meanwhile, the construction process is convenient to operate and simple in steps, and the composite polyurethane runway surface layer obtained by the construction process has the advantages of stable structure and good mechanical property.
In a specific possible embodiment, the oxidized rubber powder in the P2 step is prepared by the following method:
s1, uniformly mixing the waste rubber powder with an aqueous solution of hydrogen peroxide and an aqueous solution of sodium hypochlorite, and standing for 5-8 hours at normal temperature to obtain a mixed solution;
s2, drying the mixed solution at the temperature of 80-85 ℃ to constant weight, and cooling to room temperature to obtain the oxidized rubber powder.
The method comprises the following steps of modifying the surface of waste rubber powder in aqueous hydrogen peroxide and aqueous sodium hypochlorite solution through the strong oxidizing property of hydrogen peroxide and sodium hypochlorite, and drying to obtain oxidized rubber powder. Standing for 5-8h at normal temperature can ensure that only the surface layer of the oxidized rubber powder is activated and the interior of the oxidized rubber powder still has good elasticity in the mixed solution of aqueous hydrogen peroxide solution and aqueous sodium hypochlorite solution. The mixed solution is dried at the temperature of 80-85 ℃, so that the moisture on the oxidized rubber powder can be removed, and the structure of the oxidized rubber powder can not be damaged.
In a specific possible embodiment, the oxidized rubber powder in the P2 step is prepared by the following method:
s1, uniformly mixing the waste rubber powder with an aqueous solution of hydrogen peroxide and an aqueous solution of sodium hypochlorite, and standing for 5-8 hours at normal temperature to obtain a mixed solution;
s2, mixing at least one of calcium carbonate whisker, zinc oxide whisker or aluminum borate whisker with a coupling agent at a high speed to obtain coupling whisker; drying the mixed solution at the temperature of 80-85 ℃ to constant weight, and cooling to room temperature to obtain activated rubber powder; then the coupling crystal whisker and the activated rubber powder are stirred at high speed at the temperature of 100-110 ℃, and the oxidized rubber powder is obtained after cooling.
By adopting the technical scheme, the coupling agent is completely coated on the surface of the whisker through high-speed rotation. Then the oxidized rubber powder and the crystal whisker are subjected to coupling reaction at the high temperature of 100-110 ℃, and then the oxidized rubber powder and the crystal whisker are cooled to obtain a modified mixture.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the added oxidized rubber powder can improve the mechanical properties of the composite polyurethane runway surface layer, such as elasticity, impact resistance and the like, and the oxidized rubber powder and polyurethane molecules have better bonding property, so that cracks in the polyurethane elastic layer can be effectively prevented, and the mechanical stability of the composite polyurethane runway surface layer is improved;
2. according to the application, the whiskers are added into the oxidized rubber powder, and when the whiskers are coupled on the surface of the oxidized rubber powder through the coupling agent, the whiskers are located between the adjacent oxidized rubber powder, so that the distance between the adjacent oxidized rubber powder is increased, the van der Waals force between the oxidized rubber powder can be reduced, the dispersibility of the oxidized rubber powder is improved, the oxidized rubber powder can play a better role in a polyurethane elastic layer, the elasticity and fatigue resistance of the polyurethane elastic layer are further improved, and cracks generated inside the polyurethane elastic layer are reduced;
3. the whisker added in the application has the characteristics of anisotropy, high strength and high elongation, and can further improve the lasting stability of the mechanical property of the composite polyurethane track surface layer.
Detailed Description
The present application will be described in further detail below with reference to preparation examples, examples and comparative examples.
Preparation example of the oxidized rubber powder preparation example 1 is described below as an example.
Preparation example 1
In the preparation example, the following components are adopted by the oxidized rubber powder: 110kg of waste rubber powder with the model of HHJF-2, 75kg of aqueous hydrogen peroxide solution with the mass fraction of 15 percent and 75kg of aqueous sodium hypochlorite solution with the mass fraction of 2 percent, wherein the particle size of the waste rubber powder is 90-95 meshes.
In the preparation example, the oxidized rubber powder is prepared according to the following method: mixing the waste rubber powder, aqueous hydrogen peroxide and aqueous sodium hypochlorite solution in a reaction kettle according to the proportion, uniformly stirring for 3 hours, and standing for 7 hours at normal temperature to obtain a mixed solution; and then placing the mixed solution in an oven, drying at 82 ℃, weighing the dried product every 2 hours, drying for 12 hours, obtaining powder when the weight of the dried product is kept unchanged, and cooling the powder to room temperature to obtain the oxidized rubber powder.
Preparation example 2
Preparation 2 differs from preparation 1 in that: in the preparation example, the following components are adopted by the oxidized rubber powder: 100kg of waste rubber powder with the model of HHJF-2, 50kg of aqueous hydrogen peroxide solution with the mass fraction of 15 percent and 50kg of aqueous sodium hypochlorite solution with the mass fraction of 2 percent, wherein the particle diameter of the waste rubber powder is 80-90 meshes.
In the preparation example, the oxidized rubber powder is prepared according to the following method: mixing the waste rubber powder, an aqueous hydrogen peroxide solution and an aqueous sodium hypochlorite solution in a reaction kettle according to the proportion, uniformly stirring for 3 hours, and standing for 5 hours at normal temperature to obtain a mixed solution; and then placing the mixed solution in a drying oven, drying at the temperature of 80 ℃, weighing the dried product every 2 hours, drying for 12 hours, obtaining powder when the weight of the dried product is kept unchanged, and cooling the powder to room temperature to obtain the oxidized rubber powder.
Preparation example 3
Preparation example 3 differs from preparation example 1 in that in this preparation example, the oxidized rubber powder comprises the following components: 120kg of waste rubber powder with the model of HHJF-2, 100kg of aqueous hydrogen peroxide solution with the mass fraction of 15 percent and 100kg of aqueous sodium hypochlorite solution with the mass fraction of 2 percent, wherein the particle diameter of the waste rubber powder is 95-100 meshes.
In the preparation example, the oxidized rubber powder is prepared according to the following method: mixing the waste rubber powder, aqueous hydrogen peroxide and aqueous sodium hypochlorite solution in a reaction kettle according to the proportion, uniformly stirring for 3 hours, and standing for 8 hours at normal temperature to obtain a mixed solution; and then placing the mixed solution in an oven, drying at 85 ℃, weighing the dried product every 2 hours, drying for 12 hours, obtaining powder when the weight of the dried product is kept unchanged, and cooling the powder to room temperature to obtain the oxidized rubber powder.
Preparation example 4
Preparation example 4 differs from preparation example 1 in that in this preparation example, the oxidized rubber powder comprises the following components: 25kg of 3- (2, 3-glycidoxy) propyltrimethoxysilane and 40kg of calcium carbonate whiskers.
In the preparation example, the oxidized rubber powder is prepared according to the following method: firstly, calcium carbonate whisker and 3- (2, 3-epoxypropoxy) propyl trimethoxy silane are put in a high-speed mixer and evenly mixed for 1 hour to obtain the coupling whisker. Then mixing the waste rubber powder with aqueous hydrogen peroxide solution and aqueous sodium hypochlorite solution in a reaction kettle, uniformly stirring for 3 hours, and standing for 7 hours at normal temperature to obtain mixed solution; and then placing the mixed solution in a drying oven, drying at 82 ℃, weighing the dried product every 2 hours, drying for 12 hours, obtaining powder when the weight of the dried product is kept unchanged, and cooling the powder to room temperature to obtain the activated rubber powder. And finally, mixing the activated rubber powder and the coupling whiskers in a reaction device, stirring at a high speed for 4 hours at 105 ℃, and cooling to room temperature to obtain the oxidized rubber powder.
Preparation examples 5 to 6
As shown in Table 1, preparations 5 to 6 were different from preparation 4 in that: the raw material proportion of the coupling crystal whisker is different from the high-speed stirring temperature selected in the preparation process.
TABLE 1
Figure BDA0003851849770000061
Preparation example 7
Preparation 7 differs from preparation 4 in that: the crystal whisker is a mixture of 15kg of calcium carbonate crystal whisker, zinc oxide crystal whisker and aluminum borate crystal whisker, and the mass ratio of the calcium carbonate crystal whisker to the zinc oxide crystal whisker to the aluminum borate crystal whisker is 1.
Examples
The following description will be given by taking example 1 as an example.
Example 1
This embodiment provides a compound polyurethane runway surface course, and the surface course adopts the bottom of mating formation, polyurethane elastic layer and top layer, and the bottom of mating formation is laid subaerial, and polyurethane elastic layer is laid on the bottom of mating formation, and the top layer is laid on polyurethane elastic layer.
This example provides a paving mat that uses AC-10 asphalt concrete.
The embodiment provides a polyurethane elastic layer, which adopts a component A and a component B, wherein the mass ratio of the component A to the component B is 3.
This preparation example provides a component A, using 20kg of a polyoxypropylene diol having a molecular weight of 2000, 20kg of MDI trimer and 15kg of dimethylethylamine. The component A is prepared by the following steps: placing polyoxypropylene diol in a reaction device, vacuumizing, raising the temperature in the reaction device to 65 ℃, adding MDI trimer and dimethylethylamine into the reaction device, uniformly stirring, raising the reaction temperature to 95 ℃, reacting for 3 hours, discharging air bubbles, and discharging to obtain the component A.
This preparation provides a B component, 30KG of polyhexamethylene carbonate diol having a molecular weight of 900, 7KG of 1, 4-butanediol, 6KG of triethylamine, 20KG of water and 40KG of the powder rubber of preparation 1 are used. The component B is prepared by the following steps: putting the poly (hexamethylene carbonate) diol into a reaction device, vacuumizing, raising the temperature in the reaction device to 65 ℃, adding 1, 4-butanediol, triethylamine, the oxidized rubber powder prepared in the preparation example 1 and water into the reaction device, uniformly stirring, raising the reaction temperature to 95 ℃, reacting for 3 hours, discharging bubbles, and discharging to obtain the component B.
This example provides a surface compound using 90kg of YH-315 type face gum and 40kg of EPDM pellets. And uniformly mixing the surface rubber and the ethylene propylene diene monomer particles in a mixing device to obtain the surface rubber material.
The embodiment provides a construction process of a composite polyurethane runway surface layer, which comprises the following steps:
firstly, paving asphalt concrete on a roadbed, compacting and leveling the asphalt concrete layer by a road roller, and completely curing asphalt after 6 hours to obtain a paving bottom layer.
And (3) uniformly mixing the component A and the component B according to the mass ratio of 3. And (3) paving a polyurethane elastic material on the paving bottom layer, wherein the thickness of the paved polyurethane elastic material is 12mm, and after waiting for 6 hours, curing the polyurethane elastic material to obtain the polyurethane elastic layer.
And finally, adding a surface sizing material into a spraying machine, paving the surface sizing material on the polyurethane elastic layer through the spraying machine, wherein the paving thickness is 3mm, curing the surface layer after waiting for 6 hours, and then removing impurities on the surface layer to obtain the composite polyurethane track surface layer.
Example 2
Example 2 is different from example 1 in the raw material component ratio and the preparation process parameters of the polyurethane elastic material.
This preparation example provides a component A, using 10kg of a polyoxypropylene diol having a molecular weight of 2000, 15kg of MDI trimer and 10kg of dimethylethylamine. The component A is prepared by the following steps: placing polyoxypropylene glycol in a reaction device, vacuumizing, raising the temperature in the reaction device to 50 ℃, adding MDI trimer and dimethylethylamine into the reaction device, stirring uniformly, raising the reaction temperature to 90 ℃, reacting for 3 hours, discharging bubbles, and discharging to obtain a component A.
This preparation provides a B component, 20kg of polyhexamethylene carbonate glycol having a molecular weight of 900, 5kg of 1, 4-butanediol, 2kg of triethylamine, 10kg of water and 30kg of the powder adhesive of preparation 1 are used. The component B is prepared by the following steps: putting the poly (hexamethylene carbonate) diol into a reaction device, vacuumizing, raising the temperature in the reaction device to 50 ℃, adding 1, 4-butanediol, triethylamine, the oxidized rubber powder prepared in the preparation example 1 and water into the reaction device, uniformly stirring, raising the reaction temperature to 90 ℃, reacting for 3 hours, discharging bubbles, and discharging to obtain the component B.
Example 3
Example 3 is different from example 1 in the raw material component ratio and the preparation process parameters of the polyurethane elastic material.
This preparation example provides a component A, using 30kg of a polyoxypropylene diol having a molecular weight of 2000, 30kg of MDI trimer and 20kg of dimethylethylamine. The component A is prepared by the following steps: placing polyoxypropylene glycol in a reaction device, vacuumizing, raising the temperature in the reaction device to 80 ℃, adding MDI trimer and dimethylethylamine into the reaction device, stirring uniformly, raising the reaction temperature to 100 ℃, reacting for 3 hours, discharging bubbles, and discharging to obtain the component A.
This preparation provides a B component, 40kg of polyhexamethylene carbonate glycol having a molecular weight of 900, 10kg of 1, 4-butanediol, 10kg of triethylamine, 30kg of water and 50kg of the powder adhesive of preparation 1 are used. The component B is prepared by the following steps: putting poly (hexamethylene carbonate) diol into a reaction device, vacuumizing, raising the temperature in the reaction device to 80 ℃, adding 1, 4-butanediol, MDI tripolymer, triethylamine, the oxide rubber powder prepared in the preparation example 1 and water into the reaction device, uniformly stirring, raising the reaction temperature to 100 ℃, reacting for 3 hours, discharging bubbles, and discharging to obtain the component B.
Example 4
Example 4 differs from example 1 in that the oxidized rubber powder selected in example 4 was the oxidized rubber powder of preparation 2.
Example 5
Example 5 differs from example 1 in that the oxidized rubber powder selected in example 5 was the oxidized rubber powder of preparation example 3.
Example 6
Example 6 differs from example 1 in that the oxidized rubber powder selected in example 6 was the oxidized rubber powder of preparation 4.
Example 7
Example 7 differs from example 1 in that the oxidized rubber powder selected in example 7 was the oxidized rubber powder of preparation example 5.
Example 8
Example 8 differs from example 1 in that the oxidized rubber powder selected in example 8 was the oxidized rubber powder of preparation example 6.
Example 9
Example 9 differs from example 1 in that the oxidized rubber powder selected in example 9 was the oxidized rubber powder of preparation example 7.
Example 10
Example 10 differs from example 1 in that 80kg of gum and 30kg of ethylene propylene diene monomer particles were used as the surface sizing in example 10.
Example 11
Example 11 differs from example 1 in that 100kg of gum and 50kg of ethylene propylene diene monomer particles were used as the skin compound in example 11.
Comparative example
Comparative example 1
Comparative example 1 is different from example 1 in that the polyurethane elastic layer in comparative example 1 does not add an oxidized rubber powder.
Comparative example 2
Comparative example 2 differs from example 1 in that the oxidized rubber powder in comparative example 2 is replaced with an equal amount of waste rubber powder.
Comparative example 3
Comparative example 3 differs from example 1 in that the oxidized rubber powder in comparative example 3 was replaced with equal amounts of calcium carbonate whiskers.
Comparative example 4
Comparative example 4 differs from example 1 in that no skin layer was laid.
Comparative example 5
Comparative example 5 differs from example 1 in that the polyhexamethylene carbonate diol is replaced with an equal amount of polyoxypropylene diol and the MDI trimer is replaced with an equal amount of cyclohexylmethane diisocyanate.
Performance detection
Aiming at the composite polyurethane track surface layers provided in the embodiments 1 to 11 and the comparative examples 1 to 5, the initial hardness, rebound resilience, tensile strength and compression recovery rate of the composite polyurethane track surface layer are tested, 3 testers run on the composite polyurethane track surface layer in situ for 2h every day, and after 3 months, the hardness, rebound resilience, tensile strength and compression recovery rate of the composite polyurethane track surface layer are tested. The test data are shown in Table 2.
And (3) hardness testing: the composite polyurethane track surface layers provided in examples 1-11 and comparative examples 1-5 were subjected to hardness testing with reference to the "GB/T531 rubber Shore A hardness test method".
And (3) testing the rebound rate: the resilience of the composite polyurethane track covers provided in examples 1 to 11 and comparative examples 1 to 5 was tested with reference to GB/T1681 determination of resilience of vulcanized rubber.
Tensile strength and elongation at break test: the composite polyurethane runway surface layers provided in examples 1-11 and comparative examples 1-5 were tested for tensile strength and elongation at break by referring to GB/T10654 determination of tensile strength and elongation at break of polymeric porous elastic material.
And (3) testing the compression recovery rate: the composite polyurethane track surface layers provided in examples 1-11 and comparative examples 1-5 were tested for their compressive recovery rate with reference to GB/T14833-93 plastic track.
TABLE 2
Figure BDA0003851849770000101
As can be seen from table 2, the shore a hardness of examples 1 to 11 is within the range of 45 to 60 degrees, which meets the hardness requirement of the plastic track, and thus the composite polyurethane track surface layer prepared by using the raw material proportioning and the preparation process in the present application has good hardness.
Compared with the embodiment 1, the oxide rubber powder is not added in the comparative example 1, the oxide rubber powder is replaced by waste rubber powder in the comparative example 2, the oxide rubber powder is replaced by calcium carbonate whiskers in the comparative example 3, the Shore A hardness, the compression recovery rate, the elongation at break, the tensile strength and the rebound resilience of the comparative examples 1-3 are lower, and after the composite polyurethane runway surface is used, the compression recovery rate, the elongation at break, the tensile strength and the rebound resilience of the comparative examples 1-3 are obviously reduced, so that the oxide rubber powder can effectively improve the lasting stability of the mechanical property of the composite polyurethane runway surface, and after the whiskers are added in the oxide rubber powder, the whiskers and the coupling agent and the oxide rubber powder are subjected to mutual synergistic action, so that the stability of the mechanical property of the composite polyurethane runway surface can be further improved, and the service life of the composite polyurethane runway surface is prolonged.
Compared with the example 1, the comparative example 4 does not lay the surface layer, after the comparative example 4 is used for 3 months, the compression recovery rate, the elongation at break, the tensile strength and the rebound rate are obviously reduced, and the mechanical property of the composite polyurethane runway surface layer after the use is poor. The surface layer arranged in the application can effectively protect the polyurethane elastic layer, reduces the aging of the polyurethane elastic layer and improves the mechanical stability of the composite polyurethane track surface layer.
Compared with example 1, comparative example 5 replaces poly hexamethylene carbonate diol and MDI trimer in a two-component polyurethane material, and the data in the table show that the initial compression recovery rate, the elongation at break, the tensile strength and the rebound rate of the comparative example 5 are poor, which shows that the polyurethane elastic layer can have better initial mechanical property by the two-component polyurethane formula provided in the application.
Compared with example 1, examples 2-5 and examples 10-11 all had better compression recovery rate, elongation at break, tensile strength and rebound rate before and after use, which shows that the composite polyurethane runway surface layer prepared within the component content and preparation parameter ranges provided in the application can stabilize the mechanical properties of the composite polyurethane runway surface layer.
The compression recovery, elongation at break, tensile strength and rebound resilience of example 6 are improved as compared with example 1. The compression recovery rate, elongation at break, tensile strength and rebound rate of the used example 6 are hardly changed, which shows that the addition of the whiskers into the oxide powder rubber has the effect of improving the stability of the mechanical properties of the composite polyurethane runway surface layer.
Examples 7-9 had better compression recovery, elongation at break, tensile strength and rebound before and after use compared to example 6, which demonstrates that whiskers prepared within the ranges of component content and preparation parameters set forth in the present application can all prolong the stability of the mechanical properties of the composite polyurethane runway facing.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. A compound polyurethane runway surface course which is characterized in that: the floor mat formation, the polyurethane elastic layer and the surface layer are sequentially laid from top to bottom, the floor mat formation is bonded with the ground, the polyurethane elastic layer comprises a component A and a component B, and the component A comprises the following components in parts by weight according to the total weight of the component A: 10-30 parts of polyether polyol, 15-30 parts of MDI trimer and 10-20 parts of diluent; the component B comprises the following components in parts by weight based on the total weight of the component B: 20-40 parts of polycarbonate diol, 5-10 parts of a chain extender, 2-10 parts of triethylamine, 10-30 parts of water and 30-50 parts of oxidized rubber powder, wherein the particle size of the oxidized rubber powder is 80-100 meshes.
2. The composite polyurethane runway surface layer of claim 1, wherein the oxide rubber powder is prepared from the following components in parts by weight: 100-120 parts of waste rubber powder, 50-100 parts of aqueous hydrogen peroxide solution and 50-100 parts of aqueous sodium hypochlorite solution.
3. The composite polyurethane track surface layer of claim 2, wherein the oxidized rubber powder further comprises 20-30 parts of a coupling agent and 30-50 parts of whiskers, and the whiskers are at least one of calcium carbonate whiskers, zinc oxide whiskers or aluminum borate whiskers.
4. The composite polyurethane track surface of claim 1, wherein: the pavement bottom layer is made of asphalt concrete.
5. The composite polyurethane runway surface layer as claimed in claim 1, characterized in that the surface layer comprises the following components in parts by weight: 80-100 parts of surface rubber and 30-50 parts of ethylene propylene diene monomer particles.
6. A construction process of a composite polyurethane runway surface layer comprises the following steps:
p1, paving a paving bottom layer on the roadbed;
p2, heating polyether polyol in the component A to 50-80 ℃ in a vacuum environment according to a ratio, adding MDI tripolymer and a diluent, uniformly stirring, heating to 90-100 ℃, discharging after bubble discharge to obtain the component A; according to the proportion, in a vacuum environment, heating the polycarbonate diol in the component B to 50-80 ℃, adding a chain extender, triethylamine, water and oxidized rubber powder, uniformly stirring, heating to 90-100 ℃, discharging after bubbles are discharged, and obtaining the component B; uniformly mixing the component A and the component B to obtain a polyurethane elastic material; uniformly paving a polyurethane elastic material on the surface of the paving bottom layer, and curing to obtain a polyurethane elastic layer;
and P3, uniformly mixing the surface rubber and the ethylene propylene diene monomer rubber particles, uniformly spraying the mixture on the polyurethane elastic layer, curing to obtain a surface layer, and removing impurities on the surface layer to obtain the composite polyurethane track surface layer.
7. The construction process of the composite polyurethane runway surface layer as claimed in claim 6, wherein the oxidized rubber powder in the step P2 is prepared by the following method:
s1, uniformly mixing the waste rubber powder with an aqueous solution of hydrogen peroxide and an aqueous solution of sodium hypochlorite, and standing for 5-8 hours at normal temperature to obtain a mixed solution;
s2, drying the mixed solution at the temperature of 80-85 ℃ to constant weight, and cooling to room temperature to obtain the oxidized rubber powder.
8. The construction process of the composite polyurethane runway surface layer as claimed in claim 6, wherein the oxidized rubber powder in the step P2 is prepared by the following method:
s1, uniformly mixing the waste rubber powder with an aqueous solution of hydrogen peroxide and an aqueous solution of sodium hypochlorite, and standing for 5-8 hours at normal temperature to obtain a mixed solution;
s2, mixing at least one of calcium carbonate whisker, zinc oxide whisker or aluminum borate whisker with a coupling agent at a high speed to obtain coupling whisker; drying the mixed solution at the temperature of 80-85 ℃ to constant weight, and cooling to room temperature to obtain activated rubber powder; then the coupling crystal whisker and the activated rubber powder are stirred at high speed at the temperature of 100-110 ℃, and the oxidized rubber powder is obtained after cooling.
CN202211135492.6A 2022-09-19 2022-09-19 Composite polyurethane runway surface layer and construction process thereof Pending CN115449048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211135492.6A CN115449048A (en) 2022-09-19 2022-09-19 Composite polyurethane runway surface layer and construction process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211135492.6A CN115449048A (en) 2022-09-19 2022-09-19 Composite polyurethane runway surface layer and construction process thereof

Publications (1)

Publication Number Publication Date
CN115449048A true CN115449048A (en) 2022-12-09

Family

ID=84304421

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211135492.6A Pending CN115449048A (en) 2022-09-19 2022-09-19 Composite polyurethane runway surface layer and construction process thereof

Country Status (1)

Country Link
CN (1) CN115449048A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1450121A (en) * 2003-04-23 2003-10-22 北京红福莱茵科技发展有限公司 Whisker material modified polyurethane ground-paving material and preparation process thereof
CN103525077A (en) * 2013-09-26 2014-01-22 四川大学 Surface oxidation modified vulcanized rubber powder/polyurethane composite material and preparation method thereof
CN109896789A (en) * 2019-02-25 2019-06-18 江苏常大绿恒环境工程有限公司 A kind of preparation method of high-impermeable type rubber concrete material
CN110004794A (en) * 2019-04-13 2019-07-12 江苏长诺运动场地新材料有限公司 A kind of cast-in-place type polyurethane fretting map runway cover and its construction technology
CN112574674A (en) * 2020-11-30 2021-03-30 武汉世纪领航体育发展有限公司 Composite runway and construction process thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1450121A (en) * 2003-04-23 2003-10-22 北京红福莱茵科技发展有限公司 Whisker material modified polyurethane ground-paving material and preparation process thereof
CN103525077A (en) * 2013-09-26 2014-01-22 四川大学 Surface oxidation modified vulcanized rubber powder/polyurethane composite material and preparation method thereof
CN109896789A (en) * 2019-02-25 2019-06-18 江苏常大绿恒环境工程有限公司 A kind of preparation method of high-impermeable type rubber concrete material
CN110004794A (en) * 2019-04-13 2019-07-12 江苏长诺运动场地新材料有限公司 A kind of cast-in-place type polyurethane fretting map runway cover and its construction technology
CN112574674A (en) * 2020-11-30 2021-03-30 武汉世纪领航体育发展有限公司 Composite runway and construction process thereof

Similar Documents

Publication Publication Date Title
JP3343078B2 (en) Elastic pavement material and elastic pavement method
KR100667364B1 (en) Urethane elastomer pavement composition
CN102424721B (en) Environment friendly plastic slurry for sports field and preparation method thereof
CN100547049C (en) A kind of nano organic montmorillonite modified end-silicane-group organosilicon modified polyurethane type seal gum and preparation method thereof
JP5385772B2 (en) Manufacturing method of outdoor facility pavement, surface finishing material used therefor, and outdoor facility pavement obtained thereby
KR100603916B1 (en) The packing method oh urethane - elasticity with the reforming urethane binder for elasticity - packing use
CN1854165A (en) Organic silicon modified aqueous polyurethane
KR100603813B1 (en) Polyurethane track having exellent impact absorbing and anti-slip properties and construvtion method thereof
CN111978912A (en) Organic silicon modified polyurethane sealing material and preparation method thereof
CN105018015B (en) Method for preparing polyurethane-modified organosilicon double-component room-curing elastomer adhesive
CN113527629B (en) Modified polyether resin for high-weather-resistance high-performance building outer wall and sealant
CN102395613A (en) Expandable polyurethane composition and process for production of polyurethane foam
CN110527482B (en) Special two-component caulking waterproof sealant for railway ballastless track and preparation method thereof
JP4114371B2 (en) Thermosetting polyurethane elastomer molded article, method for producing the same, and composition used therefor
CN115449048A (en) Composite polyurethane runway surface layer and construction process thereof
JP4216424B2 (en) Surface treatment method for pavement aggregate and pavement method using the treated aggregate
KR20150130716A (en) Polyurethane track with eco-material and construction method thereof
KR100778933B1 (en) Ground materials with high elasticity and durability, and manufacturing method of the ground materials, and construction method using the ground materials
CN110437791B (en) Single-component caulking waterproof sealant for railway ballastless track and preparation method thereof
KR200354486Y1 (en) Polyurethane track having exellent impact absorbing and anti-slip properties
CN1250671C (en) Polysulfur sealing gum reinforced using polythiourea
CN109016752A (en) Polyurethane elastomeric compositions and preparation method thereof for Ballast track waterproof layer
JPH07216339A (en) Binder for rubber chip elastomer
CN110655856A (en) Plastic track primer and preparation method thereof
CN101407572B (en) Polyurethane-polyurea water dispersion and preparation thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20221209

RJ01 Rejection of invention patent application after publication