A colorful prefabricated polyurethane micro-foamed runway material and preparation method thereof

Abstract

The present invention belongs to the technical field of runway materials, and in particular to a colorful prefabricated polyurethane micro-foamed runway material and a preparation method thereof, comprising component A and component B; component A comprises 40 to 45 parts by weight of polyether polyol, 10 to 25 parts by weight of powder, 5 to 10 parts by weight of plasticizer, 0.5 to 1 parts by weight of pigment, 0.5 to 1 parts by weight of catalyst, 0.1 to 0.5 parts by weight of dispersant C-103, 0.1 to 0.5 parts by weight of uniform foaming agent, and 1 to 5 parts by weight of mixed foaming agent; component B comprises 30 to 45 parts by weight of polyether polyol and 45 to 65 parts by weight of isocyanate; the ratio of the total amount of NCO in component B to the total amount of OH in component A is 1.1 to 1.3. The prefabricated material avoids the problems of different foaming rates, site bulging, and site quality in traditional on-site construction. The polyurethane foam in this formula is mostly microporous, and has excellent waterproofness and durability.

Description

Technical Field

[0001] The invention belongs to the technical field of runway materials, and in particular relates to a colorful prefabricated polyurethane micro-foamed runway material and a preparation method thereof. Background Art

[0002] Polyurethane materials shine in the plastic track industry with their excellent performance. At present, most of the various indoor and outdoor sports plastic tracks are still cast-in-place. The promulgation of the new national standard GB / 36246-2018 has restricted the impact absorption and vertical deformation performance of the court. In order to meet this performance requirement, most manufacturers design the material to have a certain foaming rate when designing the formula. This faces a problem, that is, the foaming rate of the material is different when used in different temperature and humidity environments, and under high temperature and high air humidity conditions, it is easy to cause unstable foaming, and the reaction time and thickness are difficult to control, affecting the quality of the venue.

[0003] For example, the invention patent with application number CN201910657159.3 discloses a solvent-free foamed polyurethane prefabricated plastic track elastic layer and its preparation method, which is made of the following materials in weight ratio: 5-15 parts of isocyanate component, 20-60 parts of polyol component, 10-30 parts of powder filler, 3-5 parts of pigment, 5-20 parts of plasticizer, 0.03-0.07 parts of drying agent, and 1-3 parts of foaming agent. The advantage of this invention is that the cost is greatly reduced compared with the existing commercially available rubber prefabricated track elastic layer. Through formula design and foaming process, the impact absorption and vertical deformation performance meet the national standard requirements. While the thickness and performance meet the standards, the use of materials is reduced, which can bring considerable economic benefits; compared with the traditional cast-in-place plastic track elastic layer, the product is fully cured, stable in performance, does not require the addition of any organic solvents during the manufacturing process, has zero VOC release, meets the national standard environmental protection requirements, and has a simple construction process.

[0004] Although the above invention solves the problem that the foaming rate of materials is different when used in different temperature and humidity environments in the form of a prefabricated runway, and that the site bulges easily under high temperature and high air humidity conditions, affecting the quality of the site, resulting in unstable foaming, and difficulty in controlling the reaction time and thickness, water is used as a foaming agent in the above formula, but no uniform foaming agent is added, which will cause uneven foaming, hard foaming, and coarse foaming. According to repeated patent experiments, most of the foam cells of the product under this ratio are open, that is, the water absorption rate is high and the durability is poor. No light stabilizer is added to the formula, and the anti-aging performance is also poor. Summary of the invention

[0005] The purpose of the present invention is to provide a colorful prefabricated polyurethane micro-foamed runway material and a preparation method thereof, which solves the problem that the polyurethane foaming is uneven when poured on site, which easily leads to bulging of the site, and has poor aging resistance and durability.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a colorful prefabricated polyurethane micro-foamed runway material, comprising component A and component B;

[0007] Component A includes 40-45 parts by weight of polyether polyol, 10-25 parts by weight of powder, 5-10 parts by weight of plasticizer, 0.5-1 parts by weight of pigment, 0.5-1 parts by weight of catalyst, 0.1-0.5 parts by weight of dispersant C-103, 0.1-0.5 parts by weight of foam leveling agent, 1-5 parts by weight of mixed foaming agent, 0.2-1 parts by weight of silane coupling agent, 0.5-1 parts by weight of light stabilizer, 0.5-1 parts by weight of ultraviolet absorber, and 0.5-1 parts by weight of antioxidant;

[0008] Component B includes 30 to 45 parts by weight of polyether polyol and 45 to 65 parts by weight of isocyanate;

[0009] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.1 to 1.3.

[0010] Specifically, the mixed foaming agent includes a mixture of water, isopentane, pentafluorobutane and 1,1,1,3,3-pentafluoropropane, and the ratio thereof is 10-20:40-55:20-30:20-30.

[0011] Optionally, the plasticizer is one of 52# environmentally friendly chlorinated paraffin, chloropalm oil methyl ester, acetyl trimethyl citrate and dimethyl carbonate, or any mixture thereof.

[0012] Optionally, the isocyanate is liquefied diphenylmethane diisocyanate and / or modified diphenylmethane diisocyanate.

[0013] Optionally, the polyether polyol is a polyether diol, a polyether triol or a mixture thereof; the molecular weight of the polyether diol is selected from one or a mixture of 400 g / mol, 1000 g / mol and 2000 g / mol, and the molecular weight of the polyether triol is selected from 3000 g / mol, 5000 g / mol or a mixture thereof.

[0014] Optionally, the foam leveling agent is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759.

[0015] Optionally, the catalyst is a tertiary amine catalyst and / or an organic metal catalyst.

[0016] Optionally, the powder is one of talcum powder, heavy calcium carbonate, light calcium carbonate, nano calcium or any mixture thereof.

[0017] Optionally, the pigment is one or a mixture of several of phthalocyanine green, iron red, scarlet, phthalocyanine blue, iron green and iron yellow.

[0018] Optionally, the ultraviolet absorber is ultraviolet absorber UV-326 and / or ultraviolet absorber UV-196.

[0019] Optionally, the method for preparing the colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0020] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the mixed foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 1000 to 2500 rpm for 1 to 2 hours using a disperser, stirring evenly and adding into the A cylinder of a low-pressure foaming machine, controlling the temperature of the A cylinder to be 20 to 25° C., and obtaining the component A;

[0021] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating them to 70-90° C., reacting for 3-5 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0022] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component into the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.4-1 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 40-50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0023] Specifically, most of the prefabricated polyurethane micro-foam track materials currently use water as a foaming agent. Water, as a chemical foaming agent, can react with isocyanate to generate CO2 to form bubbles. However, if water is used as a foaming agent and the amount used is slightly increased, the foamed polyurethane will become hard foam, with coarse pores, and will be relatively hard and brittle. A mixed foaming agent is used in this formula. The mixed foaming agent has a low density and is easy to evaporate. After evaporation, it leaves small pores in the polyurethane. Combined with the use of a uniform foaming agent, the pores of the polyurethane micro-foam track material can be made more uniform and dense, reducing water absorption. At the same time, silane coupling agents and plasticizers are added to the formula to reduce viscosity while increasing the tensile strength, impact resistance, and aging resistance of the polyurethane.

[0024] The above one or more technical solutions in a colorful prefabricated polyurethane micro-foam runway material and a preparation method thereof provided by an embodiment of the present invention have at least one of the following technical effects: the colorful prefabricated polyurethane micro-foam runway material is directly prepared from the factory and assembled on site, avoiding the traditional on-site pouring construction method, which is affected by weather and site factors, resulting in different foaming rates, site bulging, and site quality problems. At the same time, because it is prefabricated first and then assembled, each piece of polyurethane micro-foam runway material can be made into different colors for assembly. After assembly, the runway color is more colorful, which increases people's passion for sports. The ratio of total NCO: total OH in the formula is 1.1-1.3, so that the polyurethane foam is mostly microporous, with a large density, excellent waterproofness and durability; adding light stabilizers and plasticizers to the formula also enhances the tensile strength, impact resistance, and aging resistance of polyurethane. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0026] Example 1

[0027] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0028] Component A includes 40 parts by weight of polyether polyol, 25 parts by weight of powder, 10 parts by weight of plasticizer, 1 part by weight of pigment, 1 part by weight of catalyst, 0.5 parts by weight of dispersant C-103, 0.5 parts by weight of foam leveling agent, 5 parts by weight of mixed foaming agent, 1 part by weight of silane coupling agent, 1 part by weight of light stabilizer, 1 part by weight of ultraviolet absorber, and 1 part by weight of antioxidant;

[0029] The mixed foaming agent is water, isopentane foaming agent, pentafluorobutane and 1,1,1,3,3-pentafluoropropane mixed in the ratio of 1:3:2:2.

[0030] Component B includes 30 parts by weight of polyether polyol and 65 parts by weight of isocyanate;

[0031] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0032] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is iron red. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0033] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0034] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the mixed foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0035] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0036] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0037] Example 2

[0038] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0039] Component A includes 43 parts by weight of polyether polyol, 18 parts by weight of powder, 7 parts by weight of plasticizer, 0.8 parts by weight of pigment, 0.8 parts by weight of catalyst, 0.3 parts by weight of dispersant C-103, 0.3 parts by weight of foam leveling agent, 3 parts by weight of mixed foaming agent, 0.6 parts by weight of silane coupling agent, 0.7 parts by weight of light stabilizer, 0.7 parts by weight of ultraviolet absorber, and 0.7 parts by weight of antioxidant;

[0040] The mixed foaming agent is water, isopentane foaming agent, pentafluorobutane and 1,1,1,3,3-pentafluoropropane mixed in the ratio of 1:3:2:2.

[0041] Component B includes 40 parts by weight of polyether polyol and 55 parts by weight of isocyanate;

[0042] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0043] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is phthalocyanine green. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0044] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0045] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the mixed foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0046] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0047] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0048] Example 3

[0049] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0050] Component A includes 45 parts by weight of polyether polyol, 10 parts by weight of powder, 0.5 parts by weight of plasticizer, 0.5 parts by weight of pigment, 0.5 parts by weight of catalyst, 0.1 parts by weight of dispersant C-103, 0.1 parts by weight of foam leveling agent, 1 parts by weight of mixed foaming agent, 0.2 parts by weight of silane coupling agent, 0.5 parts by weight of light stabilizer, 0.5 parts by weight of ultraviolet absorber, and 0.5 parts by weight of antioxidant;

[0051] The mixed foaming agent is water, isopentane foaming agent, pentafluorobutane and 1,1,1,3,3-pentafluoropropane mixed in the ratio of 1:3:2:2.

[0052] Component B includes 45 parts by weight of polyether polyol and 45 parts by weight of isocyanate;

[0053] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0054] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is iron yellow. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0055] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0056] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the mixed foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0057] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0058] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0059] Comparative Example 1

[0060] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0061] Component A includes 43 parts by weight of polyether polyol, 18 parts by weight of powder, 7 parts by weight of plasticizer, 0.8 parts by weight of pigment, 0.8 parts by weight of catalyst, 0.3 parts by weight of dispersant C-103, 0.3 parts by weight of foam leveling agent, 3 parts by weight of water, 0.6 parts by weight of silane coupling agent, 0.7 parts by weight of light stabilizer, 0.7 parts by weight of ultraviolet absorber, and 0.7 parts by weight of antioxidant;

[0062] Component B includes 40 parts by weight of polyether polyol and 55 parts by weight of isocyanate;

[0063] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0064] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is iron red. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0065] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0066] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the water, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0067] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0068] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0069] Comparative Example 2

[0070] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0071] Component A includes 43 parts by weight of polyether polyol, 18 parts by weight of powder, 7 parts by weight of plasticizer, 0.8 parts by weight of pigment, 0.8 parts by weight of catalyst, 0.3 parts by weight of dispersant C-103, 0.3 parts by weight of foam leveling agent, 3 parts by weight of isopentane foaming agent, 0.6 parts by weight of silane coupling agent, 0.7 parts by weight of light stabilizer, 0.7 parts by weight of ultraviolet absorber, and 0.7 parts by weight of antioxidant;

[0072] Component B includes 40 parts by weight of polyether polyol and 55 parts by weight of isocyanate;

[0073] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0074] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is iron red. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0075] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0076] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the isopentane foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0077] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0078] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0079] Comparative Example 3

[0080] A colorful prefabricated polyurethane micro-foamed runway material provided in an embodiment of the present invention comprises a component A and a component B;

[0081] Component A includes 43 parts by weight of polyether polyol, 18 parts by weight of powder, 7 parts by weight of plasticizer, 0.8 parts by weight of pigment, 0.8 parts by weight of catalyst, 0.3 parts by weight of dispersant C-103, 0.3 parts by weight of foam leveling agent, 3 parts by weight of mixed foaming agent, 0.6 parts by weight of silane coupling agent, 0.7 parts by weight of light stabilizer, 0.7 parts by weight of ultraviolet absorber, and 0.7 parts by weight of antioxidant;

[0082] The mixed foaming agent is a mixture of water and isopentane foaming agent in a ratio of 1:3.

[0083] Component B includes 40 parts by weight of polyether polyol and 55 parts by weight of isocyanate;

[0084] The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.2.

[0085] The plasticizer is 52# environmentally friendly chlorinated paraffin. The isocyanate is modified diphenylmethane diisocyanate. The pigment is iron red. The polyether polyol is a mixture of polyether diol and polyether triol; the molecular weight of the polyether diol is selected from a variety of mixtures of 400g / mol, 1000g / mol and 2000g / mol, and the molecular weight of the polyether triol is selected from a mixture of 3000g / mol and 5000g / mol. The foam leveler is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759. The catalyst is a tertiary amine catalyst. The powder includes a mixture of talc, heavy calcium carbonate, light calcium carbonate, and nano calcium. The ultraviolet absorber is UV-196.

[0086] The method for preparing a colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps:

[0087] (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the isopentane, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 2000 rpm for 2 h using a disperser, and adding the mixture into the A cylinder of a low-pressure foaming machine after stirring evenly, controlling the temperature of the A cylinder to be 25° C., and obtaining the component A;

[0088] (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating to 80° C., reacting for 4 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component;

[0089] (3) Preparing the colorful prefabricated polyurethane micro-foamed track material: adding the obtained B component to the B cylinder of the foaming machine, adjusting the material flow rates output from the A cylinder and the B cylinder according to a ratio of 1:0.8 between the A component and the B component, conveying the A component and the B component to the mixing chamber of the foaming machine, stirring them thoroughly, injecting them into a mold preheated to 50° C., and taking them out after curing to obtain a colorful prefabricated polyurethane micro-foamed track material.

[0090] The rest of this embodiment is the same as that of the first embodiment. The features not explained in this embodiment are explained in the first embodiment and will not be described again. The colorful prefabricated polyurethane micro-foamed runway materials of the first embodiment and the colorful prefabricated polyurethane micro-foamed runway materials of the first embodiment and the comparative examples 1-3 are subjected to a unified experimental comparison. The hardness, tensile strength and elongation at break retention are tested according to the standard GB / 36246-2018, and the water absorption is tested according to the standard GB / T19250-2013. The specific data are shown in Table 1.

[0091] Table 1

[0092]

[0093]

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A colorful prefabricated polyurethane micro-foamed runway material, characterized in that: It includes component A and component B; Component A includes 40-45 parts by weight of polyether polyol, 10-25 parts by weight of powder, 5-10 parts by weight of plasticizer, 0.5-1 parts by weight of pigment, 0.5-1 parts by weight of catalyst, 0.1-0.5 parts by weight of dispersant C-103, 0.1-0.5 parts by weight of foam leveling agent, 1-5 parts by weight of mixed foaming agent, 0.2-1 parts by weight of silane coupling agent, 0.5-1 parts by weight of light stabilizer, 0.5-1 parts by weight of ultraviolet absorber, and 0.5-1 parts by weight of antioxidant; Component B includes 30 to 45 parts by weight of polyether polyol and 45 to 65 parts by weight of isocyanate; The ratio of the total amount of NCO in the B component to the total amount of OH in the A component is 1.1 to 1.3; The mixed foaming agent includes a mixture of water, isopentane, pentafluorobutane and 1,1,1,3,3-pentafluoropropane in a ratio of 10-20:40-55:20-30:20-30; The powder includes talcum powder, heavy calcium carbonate, light calcium carbonate, nano calcium or any mixture thereof; The method for preparing the colorful prefabricated polyurethane micro-foamed runway material is characterized by comprising the following steps: (1) preparing the component A: weighing the polyether polyol, the powder, the plasticizer, the pigment, the catalyst, the dispersant C-103, the foam leveling agent, the mixed foaming agent, the silane coupling agent, the light stabilizer, the ultraviolet absorber, and the antioxidant according to the formula, adding each component into a stirring barrel, stirring at 1000 to 2500 rpm for 1 to 2 hours using a disperser, stirring evenly and adding into the A cylinder of a low-pressure foaming machine, controlling the temperature of the A cylinder to be 20 to 25° C., and obtaining the component A; (2) preparing the B component: weighing the polyether polyol and the isocyanate in the B component according to the formula, respectively, putting them into a reaction kettle, heating them to 70-90° C., reacting for 3-5 hours, and titrating the NCO content to a theoretical value or close to the theoretical value to obtain the B component; (3) The colorful prefabricated polyurethane micro-foamed track material: add the obtained B component into the B cylinder of the low-pressure foaming machine, adjust the material flow rate of the A cylinder and the B cylinder according to the ratio of the A component to the B component of 1:0.4-1, convey the A component and the B component to the mixing chamber of the low-pressure foaming machine, stir them thoroughly and evenly, inject them into the mold preheated to 40-50°C, take them out after curing, and obtain the colorful prefabricated polyurethane micro-foamed track material.

2. The colorful prefabricated polyurethane micro-foamed runway material according to claim 1, characterized in that: The plasticizer is one of 52# environmentally friendly chlorinated paraffin, chloropalm oil methyl ester, acetyl trimethyl citrate and dimethyl carbonate or any mixture thereof.

3. The colorful prefabricated polyurethane micro-foamed runway material according to claim 1, characterized in that: The isocyanate is liquefied diphenylmethane diisocyanate and / or modified diphenylmethane diisocyanate.

4. The colorful prefabricated polyurethane micro-foamed runway material according to claim 3, characterized in that: The polyether polyol is a polyether diol, a polyether triol or a mixture thereof; the molecular weight of the polyether diol is selected from one or a mixture of 400 g / mol, 1000 g / mol and 2000 g / mol, and the molecular weight of the polyether triol is selected from 3000 g / mol, 5000 g / mol or a mixture thereof.

5. The colorful prefabricated polyurethane micro-foamed runway material according to claim 1, characterized in that: The foam leveling agent is produced by Jiangsu Meside Chemical Co., Ltd., product model M-88759.

6. The colorful prefabricated polyurethane micro-foamed runway material according to claim 1, characterized in that: The catalyst is a tertiary amine catalyst and / or an organic metal catalyst.

7. The colorful prefabricated polyurethane micro-foamed runway material according to claim 1, characterized in that: The pigment is one or a mixture of several of phthalocyanine green, iron red, scarlet, phthalocyanine blue, iron green and iron yellow.

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