CN112250924A - Formula and production process of environment-friendly recycled high-wear-resistance rubber and plastic material - Google Patents
Formula and production process of environment-friendly recycled high-wear-resistance rubber and plastic material Download PDFInfo
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Abstract
The invention discloses a formula and a production process of an environment-friendly recycled high-wear-resistance rubber and plastic material, which comprises the following raw materials: the modified nano-grade silicon nitride foaming agent comprises carboxyl nitrile rubber, methyl vinyl silicone rubber, ethylene-vinyl acetate copolymer, polypropylene thermoplastic elastomer, modified nano-grade titanium dioxide, modified nano-grade silicon nitride, modified lignocellulose short fiber, zinc stearate, nano-grade barium sulfate, a foaming agent, an accelerator and an antioxidant. The invention takes the carboxylic nitrile rubber, the methyl vinyl silicone rubber, the ethylene-vinyl acetate copolymer and the polypropylene thermoplastic elastomer as main materials, the modified titanium dioxide, the nano silicon nitride and the lignocellulose short fiber are matched in a proper proportion by rubber/plastic blending, and the obtained rubber plastic material greatly improves the wear resistance, the mechanical property and the service life in practical application while ensuring the excellent properties of the original rubber material and the original plastic material through the synergistic action of all the raw materials, is nontoxic and pollution-free, and is beneficial to environmental protection.
Description
Technical Field
The invention relates to the technical field of organic polymer material products, in particular to a formula and a production process of an environment-friendly recycled high-wear-resistance rubber and plastic material.
Background
Rubber and plastic are general names of rubber and plastic industries, are accessory products of petroleum, are identical in source, but have different physical properties and different applications in the process of manufacturing products, rubber is widely used as a tire, and plastic is widely used along with technical and market requirements and applications, and cannot be separated in daily life. The rubber plastic material belongs to a flammable product due to the uniqueness of the chemical structure, and generates molten drops in the combustion process. Briefly, plastic is the most essential difference from rubber in that plastic deforms plastically when it deforms, while rubber deforms elastically. In other words, plastic does not easily recover its original state after deformation, whereas rubber is relatively much easier. The elasticity of plastics is very small, typically less than 100%, while rubber can reach 1000% or more. Most of the molding processes of the plastic are finished, and the product process is finished; and the vulcanization process is required after the rubber molding process is finished.
The plastic and the rubber both belong to high polymer materials, mainly comprise two atoms of carbon and hydrogen, and have special performance and special application. At normal temperature, the plastic is solid and hard and cannot be stretched and deformed. The rubber has low hardness, elasticity and can be stretched and lengthened, and the rubber can recover to the original shape after being stretched. This is due to the difference in their molecular structures. The other difference is that the plastic can be recycled for a plurality of times, while the rubber can not be directly recycled, and can only be processed into reclaimed rubber which can then be used.
However, the rubber-plastic materials disclosed at present have at least the defects of poor wear resistance, poor mechanical properties, short service life and the like, and bring much inconvenience to practical application. CN106243535A discloses a POE (polyethylene hydrocarbon elastomer) modified composition added into EVA, which is easier to mold and has improved anti-skid and wear-resisting properties, but still has the wear resistance and mechanical properties which can not meet the requirements as a substitute of rubber products. Therefore, a formula and a production process of an environment-friendly recycled high-wear-resistance rubber and plastic material are provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a formula and a production process of an environment-friendly recycled high-wear-resistance rubber-plastic material.
The invention provides a formula of an environment-friendly recycled high-wear-resistance rubber and plastic material, which comprises the following raw materials in parts by weight: 8-25 parts of carboxyl nitrile rubber, 3-15 parts of methyl vinyl silicone rubber, 6-20 parts of ethylene-vinyl acetate copolymer, 5-18 parts of polypropylene thermoplastic elastomer, 9-20 parts of modified nano titanium dioxide, 3-8 parts of modified nano silicon nitride, 2-6 parts of modified lignocellulose short fiber, 0.5-1.5 parts of zinc stearate, 1.5-2.5 g of nano barium sulfate, 6-12 parts of foaming agent, 0.2-1 part of accelerator and 0.2-0.8 part of antioxidant.
Preferably, the feed comprises the following raw materials in parts by weight: 10-15 parts of carboxyl nitrile rubber, 6-12 parts of methyl vinyl silicone rubber, 8-12 parts of ethylene-vinyl acetate copolymer, 8-15 parts of polypropylene thermoplastic elastomer, 10-18 parts of modified nano titanium dioxide, 3-6 parts of modified nano silicon nitride, 3-5 parts of modified lignocellulose short fiber, 0.5-1 part of zinc stearate, 1.8-2 parts of nano barium sulfate, 8-10 parts of foaming agent, 0.2-0.5 part of accelerator and 0.3-0.5 part of antioxidant.
Preferably, the modified nano titanium dioxide is polyamino acid grafted modified nano titanium dioxide, and the preparation method comprises the following steps: (1) modifying the nano titanium dioxide powder by adopting a silane coupling agent with amino to prepare amino silane coupling agent modified nano titanium dioxide; (2) preparing alanine-N-carboxy-cyclic anhydride from alanine benzyl ester by triphosgene method; (3) amino in the amino silane coupling agent modified nano titanium dioxide initiates ring-opening polymerization of alanine-N-carboxyl-cyclic anhydride to prepare polyamino acid grafted modified nano titanium dioxide.
Preferably, the weight part ratio of the amino silane coupling agent modified nano titanium dioxide to the alanine-N-carboxyl-cyclic internal anhydride is 1: 0.5 to 2.
Preferably, the modified nano silicon nitride is hyperbranched polyester modified nano silicon nitride, and the preparation method comprises the following steps: adding silicon nitride into a mixed solution of absolute ethyl alcohol, an aminosilane coupling agent and water, stirring, performing ultrasonic dispersion to obtain a silicon nitride dispersion solution, heating, performing heat preservation reaction, after the reaction is finished, filtering, washing and drying to obtain amino-functionalized modified nano silicon nitride powder, performing ultrasonic dispersion on the obtained amino-functionalized modified nano silicon nitride powder into N, N-dimethylformamide, adding a carboxyl-terminated hyperbranched polyester solution containing p-toluenesulfonic acid, stirring, filtering, washing and drying to obtain hyperbranched polyester-modified nano silicon nitride, wherein the weight ratio of the amino-functionalized modified nano silicon nitride powder to the carboxyl-terminated hyperbranched polyester is.
Preferably, the mass fraction ratio of the mixed solution of the absolute ethyl alcohol, the amino silane coupling agent and the water is 6-9: 2: 1, the mass fraction of the carboxyl-terminated hyperbranched polyester solution is 0.3-0.5 wt%, and in the heat preservation reaction, the reaction temperature is 70-80 ℃ and the reaction time is 4-6 h.
Preferably, the preparation of the carboxyl-terminated hyperbranched polyester comprises the following steps: under the protection of nitrogen, adding trimethylolpropane and 2, 2-dimethylolpropionic acid into a reaction container, heating to 136-140 ℃, adding stannous octoate when reactants are in a molten state, and keeping stirring for reaction for 3-5 hours to obtain hydroxyl-terminated hyperbranched polyester, wherein the weight ratio of the trimethylolpropane, the 2, 2-dimethylolpropionic acid and the stannous octoate is 1: 21-25: 0.07 to 0.12.
Preferably, the modified lignocellulose short fiber is modified by an epoxy silane coupling agent, the antioxidant comprises one or a combination of more than two of an antioxidant 1010, an antioxidant 1076, an antioxidant 1330, an antioxidant 3114, an antioxidant 168, an antioxidant 626 and an antioxidant DLTP, the foaming agent is selected from azodicarbonamide, and the accelerator is selected from zinc dimethyldithiocarbamate.
The invention also aims to provide a production process of the environment-friendly recycled high-wear-resistance rubber and plastic material, which comprises the following steps:
s1, sequentially weighing carboxyl nitrile rubber, methyl vinyl silicone rubber, ethylene-vinyl acetate copolymer, polypropylene thermoplastic elastomer, modified nano titanium dioxide, modified nano silicon nitride, modified lignocellulose short fiber, zinc stearate, nano barium sulfate, foaming agent, accelerant and antioxidant according to parts by weight, putting into an internal mixer, stirring uniformly, then internally mixing, and controlling the water temperature of the internal mixer to be below 78 ℃;
s2, feeding the internally mixed discharged materials into an open mill for open milling, and discharging and cooling;
s3, putting the milled material sheet into an extruder for extrusion molding;
and S4, feeding the formed material sheet into a flat vulcanizing machine for vulcanization foaming treatment, and packaging to obtain a rubber and plastic material finished product.
Preferably, in the step S1, the banburying temperature is 110-120 ℃, the banburying time is 15-20 min, in the step S2, the front roller temperature in the open milling is 80-90 ℃, the rear roller temperature is 70-80 ℃, the roller spacing is 0.3-0.7 mm, in the step S4, the vulcanization foaming temperature is 165-182 ℃, and the foaming time is 5-8 min.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the present invention, use is made ofModified nano titanium dioxide is obtained by modifying nano titanium dioxide by adopting a silane coupling agent with amino, and then-NH on the surface of nano titanium dioxide particles is modified by amino2Initiating alanine-N-carboxyl-internal cyclic anhydride to generate macromolecular chains through ring-opening polymerization on the surfaces of nano particles by taking the alanine-N-carboxyl-internal cyclic anhydride as an initiation center to obtain polyamino acid grafted nano titanium dioxide, so that on one hand, the compatibility of the nano titanium dioxide with a rubber and plastic matrix and the dispersity of the nano titanium dioxide in the rubber and plastic matrix are obviously improved, and the defect that nano titanium dioxide particles are easy to agglomerate is overcome, on the other hand, the next step of reaction between amino groups in the polyamino acid grafted nano titanium dioxide core-shell particles and carboxyl groups in carboxylated nitrile rubber is utilized, the connection between the carboxylated nitrile rubber and the nano titanium dioxide is realized, and thus a covalent and hydrogen bond double-network structure is formed in the nitrile rubber matrix, and the finally obtained rubber and plastic material shows excellent tensile strength and.
(2) According to the invention, modified nano silicon nitride is used, amino functionalization modification treatment is carried out on the nano silicon nitride by adopting an aminosilane coupling agent, then the nano silicon nitride is grafted by reacting with carboxyl-terminated hyperbranched polyester, so as to obtain hyperbranched polyester modified nano silicon nitride, after the hyperbranched structure is grafted, the hyperbranched polyester plays a role in wrapping and separating the nano silicon nitride, after the nano silicon nitride is further sheared and dispersed by an open mill, the nano silicon nitride is prevented from reuniting again, and meanwhile, the long-chain structure is tangled with the rubber-plastic macromolecular chain to generate a good interaction with the rubber-plastic matrix, so that the compatibility of the nano silicon nitride and the rubber-plastic matrix is further increased, and the vulcanization processability of the rubber-plastic.
(3) According to the invention, the interaction between the amino group in the polyamino acid grafted on the surface of the modified nano titanium dioxide and the epoxy group of the modified lignocellulose short fiber and the carboxylated nitrile rubber is utilized, so that the nano titanium dioxide and the lignocellulose short fiber can be uniformly dispersed in the rubber matrix, the synergistic enhancement is realized, and the mechanical property and the wear resistance of the finally obtained rubber material are obviously improved.
In the invention, the high-wear-resistance rubber and plastic material is recovered in an environment-friendly manner, the high-wear-resistance rubber and plastic material is prepared by taking carboxyl nitrile rubber, methyl vinyl silicone rubber, an ethylene-vinyl acetate copolymer and a polypropylene thermoplastic elastomer as main materials, blending rubber/plastic, adding modified titanium dioxide, modified nano silicon nitride and modified lignocellulose short fibers as fillers in a proper proportion, and matching with zinc stearate, nano barium sulfate, a foaming agent, an accelerant, an antioxidant and other auxiliary agents, and through the synergistic effect of the raw materials, the obtained rubber and plastic material greatly improves the wear resistance, the mechanical property and the service life in practical application while ensuring the excellent properties of the original rubber material and plastic material, is nontoxic and pollution-free, and is beneficial to environmental protection.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
An environment-friendly recycled high-wear-resistance rubber plastic material comprises the following raw materials in parts by weight: 15 parts of carboxyl nitrile rubber, 8 parts of methyl vinyl silicone rubber, 15 parts of ethylene-vinyl acetate copolymer, 12 parts of polypropylene thermoplastic elastomer, 15 parts of modified nano titanium dioxide, 6 parts of modified nano silicon nitride, 4 parts of modified lignocellulose short fiber, 1 part of zinc stearate, 2.2 parts of nano barium sulfate, 9 parts of foaming agent, 0.6 part of accelerator and 1680.2 parts of antioxidant; the production process comprises the following steps:
s1, sequentially weighing carboxyl nitrile rubber, methyl vinyl silicone rubber, ethylene-vinyl acetate copolymer, polypropylene thermoplastic elastomer, modified nano titanium dioxide, modified nano silicon nitride, modified lignocellulose short fiber, zinc stearate, nano barium sulfate, foaming agent, accelerant and antioxidant according to parts by weight, putting the materials into an internal mixer, uniformly stirring and then internally mixing, controlling the water temperature of the internal mixer to be below 78 ℃, setting the internal mixing temperature to be 110 ℃, and setting the internal mixing time to be 18 min;
s2, feeding the internally mixed discharged materials into an open mill for open milling, wherein the front roller temperature is 90 ℃, the rear roller temperature is 78 ℃, the roller spacing is 0.6mm, and discharging and cooling are carried out;
s3, putting the milled material sheet into an extruder for extrusion molding;
s4, feeding the formed material sheet into a flat vulcanizing machine for vulcanization foaming treatment, wherein the vulcanization foaming temperature is 182 ℃, the foaming time is 6min, and packaging to obtain a rubber and plastic material finished product;
wherein, the modified nanometer titanium dioxide is polyamino acid graft modified nanometer titanium dioxide, and the preparation steps comprise: mixing the components in a mass ratio of 1.2: 1, mixing alanine-N-carboxyl-internal cyclic anhydride and amino silane coupling agent modified nano titanium dioxide, vacuumizing and drying for 1h, adding 60mL of anhydrous DMF under the protection of nitrogen, stirring and reacting for 3d in an ice bath, centrifuging, washing twice with DMF, dispersing with deionized water, and freeze-drying to obtain a solid product, namely the polyamino acid grafted modified nano titanium dioxide; the preparation method of the amino silane coupling agent modified nano titanium dioxide comprises the following steps: ultrasonically dispersing nano titanium dioxide in 175mL of absolute ethyl alcohol, adding 105 mu L of glacial acetic acid to adjust the pH value to 5 to obtain a nano titanium dioxide suspension, dropwise adding 3-aminopropyltriethoxysilane into the nano titanium dioxide suspension, stirring at room temperature for 24h, centrifuging, washing with absolute ethyl alcohol, absolute THF and acetone in sequence, dispersing the solid by deionized water, and freeze-drying to obtain a white solid product, namely the polyamino acid grafted modified nano titanium dioxide; wherein the mass ratio of the nano titanium dioxide to the 3-aminopropyltriethoxysilane is 1: 2;
the preparation of the modified nano silicon nitride comprises the following steps: adding nano silicon nitride into a mixed solution of absolute ethyl alcohol, a silane coupling agent KH550 and water, stirring, and performing ultrasonic dispersion for 30min to obtain a silicon nitride dispersion solution, wherein the mass fraction ratio of the absolute ethyl alcohol to the silane coupling agent KH550 to the water is 7: 2: 1, heating to 75 ℃, preserving heat, reacting for 5 hours, filtering, washing and drying after the reaction is finished to obtain amino functionalized modified nano silicon nitride powder; ultrasonically dispersing the obtained modified nano silicon nitride powder into N, N-dimethylformamide, then adding carboxyl-terminated hyperbranched polyester solution containing p-toluenesulfonic acid, stirring, filtering, washing with ethanol, and drying at 80 ℃ to obtain hyperbranched polyester modified nano silicon nitride; the preparation of the carboxyl-terminated hyperbranched polyester comprises the following steps: under the protection of nitrogen, the ratio of the amount of substances is 1: adding 23 parts of trimethylolpropane and 2, 2-dimethylolpropionic acid into a reaction container, heating to 140 ℃, adding 0.5% stannous octoate of the 2, 2-dimethylolpropionic acid into the reaction container when reactants are in a molten state, vacuumizing, reacting for 2 hours under vacuum to obtain hydroxyl-terminated hyperbranched polyester, dissolving the obtained hydroxyl-terminated hyperbranched polyester into acetone, adding succinic anhydride and a small amount of catalyst triethylamine with the same amount of substances, reacting for 4 hours at 65 ℃, precipitating the product in a sodium hydroxide solution of ethanol, washing with ethanol, and drying the washed product in a vacuum drying oven for 48 hours to obtain carboxyl-terminated hyperbranched polyester;
the modified lignocellulose short fiber is modified by 3-glycidyl ether oxypropyl trimethoxy silane, and the conventional technology disclosed in the field is adopted.
Example 2
An environment-friendly recycled high-wear-resistance rubber plastic material comprises the following raw materials in parts by weight: 25 parts of carboxyl nitrile rubber, 10 parts of methyl vinyl silicone rubber, 10 parts of ethylene-vinyl acetate copolymer, 5 parts of polypropylene thermoplastic elastomer, 12 parts of modified nano titanium dioxide (the preparation method is the same as that in example 1), 8 parts of modified nano silicon nitride (the preparation method is the same as that in example 1), 4 parts of modified lignocellulose short fiber (the preparation method is the same as that in example 1), 1 part of zinc stearate, 2.5 parts of nano barium sulfate, 10 parts of foaming agent, 1 part of accelerator and 10100.5 parts of antioxidant; the production process comprises the following steps:
the production process comprises the following steps:
s1, sequentially weighing carboxyl nitrile rubber, methyl vinyl silicone rubber, ethylene-vinyl acetate copolymer, polypropylene thermoplastic elastomer, modified nano titanium dioxide, modified nano silicon nitride, modified lignocellulose short fiber, zinc stearate, nano barium sulfate, foaming agent, accelerant and antioxidant according to parts by weight, putting the materials into an internal mixer, uniformly stirring and then internally mixing, controlling the water temperature of the internal mixer to be below 78 ℃, setting the internal mixing temperature to be 115 ℃ and the internal mixing time to be 15 min;
s2, feeding the internally mixed discharged materials into an open mill for open milling, wherein the front roller temperature is 85 ℃, the rear roller temperature is 80 ℃, the roller spacing is 0.5mm, and discharging and cooling are carried out;
s3, putting the milled material sheet into an extruder for extrusion molding;
and S4, feeding the formed material sheet into a flat vulcanizing machine for vulcanization foaming treatment at the vulcanization foaming temperature of 171 ℃ for 6min, and packaging to obtain the rubber and plastic material finished product.
Example 3
An environment-friendly recycled high-wear-resistance rubber plastic material comprises the following raw materials in parts by weight: 8 parts of carboxyl nitrile rubber, 12 parts of methyl vinyl silicone rubber, 20 parts of ethylene-vinyl acetate copolymer, 12 parts of polypropylene thermoplastic elastomer, 10 parts of modified nano titanium dioxide (the preparation method is the same as that in example 1), 6 parts of modified nano silicon nitride (the preparation method is the same as that in example 1), 3 parts of modified lignocellulose short fiber (the preparation method is the same as that in example 1), 0.5 part of zinc stearate, 2 parts of nano barium sulfate, 8 parts of foaming agent, 0.2 part of accelerator and 10100.5 parts of antioxidant.
Example 4
An environment-friendly recycled high-wear-resistance rubber plastic material comprises the following raw materials in parts by weight: 10 parts of carboxyl nitrile rubber, 12 parts of methyl vinyl silicone rubber, 12 parts of ethylene-vinyl acetate copolymer, 18 parts of polypropylene thermoplastic elastomer, 18 parts of modified nano titanium dioxide (the preparation method is the same as that in example 1), 6 parts of modified nano silicon nitride (the preparation method is the same as that in example 1), 5 parts of modified lignocellulose short fiber (the preparation method is the same as that in example 1), 0.5 part of zinc stearate, 1.5 parts of nano barium sulfate, 8 parts of foaming agent, 0.5 part of accelerator and 10760.3 parts of antioxidant.
Example 5
An environment-friendly recycled high-wear-resistance rubber plastic material comprises the following raw materials in parts by weight: 15 parts of carboxyl nitrile rubber, 12 parts of methyl vinyl silicone rubber, 10 parts of ethylene-vinyl acetate copolymer, 18 parts of polypropylene thermoplastic elastomer, 10 parts of modified nano titanium dioxide (the preparation method is the same as that in example 1), 3 parts of modified nano silicon nitride (the preparation method is the same as that in example 1), 4 parts of modified lignocellulose short fiber (the preparation method is the same as that in example 1), 0.5 part of zinc stearate, 1.8 parts of nano barium sulfate, 10 parts of foaming agent, 0.2 part of accelerator and 10100.5 parts of antioxidant.
Comparative example 1
The procedure was as in example 1 except that the added nano-silicon nitride was not modified.
Comparative example 2
The procedure was as in example 1 except that the added nano-titania was not modified.
Comparative example 3
The procedure is as in example 1 except that the added lignocellulosic staple fibers are unmodified.
The rubber and plastic materials obtained in the above examples 1 to 5 and comparative examples 1 to 3 were tested for wear resistance and mechanical properties, and the test results are shown in table 1.
TABLE 1
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material is characterized by comprising the following raw materials in parts by weight: 8-25 parts of carboxyl nitrile rubber, 3-15 parts of methyl vinyl silicone rubber, 6-20 parts of ethylene-vinyl acetate copolymer, 5-18 parts of polypropylene thermoplastic elastomer, 9-20 parts of modified nano titanium dioxide, 3-8 parts of modified nano silicon nitride, 2-6 parts of modified lignocellulose short fiber, 0.5-1.5 parts of zinc stearate, 1.5-2.5 g of nano barium sulfate, 6-12 parts of foaming agent, 0.2-1 part of accelerator and 0.2-0.8 part of antioxidant.
2. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 10-15 parts of carboxyl nitrile rubber, 6-12 parts of methyl vinyl silicone rubber, 8-12 parts of ethylene-vinyl acetate copolymer, 8-15 parts of polypropylene thermoplastic elastomer, 10-18 parts of modified nano titanium dioxide, 3-6 parts of modified nano silicon nitride, 3-5 parts of modified lignocellulose short fiber, 0.5-1 part of zinc stearate, 1.8-2 parts of nano barium sulfate, 8-10 parts of foaming agent, 0.2-0.5 part of accelerator and 0.3-0.5 part of antioxidant.
3. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 1, wherein the modified nano titanium dioxide is polyamino acid graft modified nano titanium dioxide, and the preparation method comprises the following steps: (1) modifying the nano titanium dioxide powder by adopting a silane coupling agent with amino to prepare amino silane coupling agent modified nano titanium dioxide; (2) preparing alanine-N-carboxy-cyclic anhydride from alanine benzyl ester by triphosgene method; (3) amino in the amino silane coupling agent modified nano titanium dioxide initiates ring-opening polymerization of alanine-N-carboxyl-cyclic anhydride to prepare polyamino acid grafted modified nano titanium dioxide.
4. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 3, wherein the amino silane coupling agent modified nano titanium dioxide and alanine-N-carboxyl-cyclic internal anhydride are in a weight ratio of 1: 0.5 to 2.
5. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 1, wherein the modified nano silicon nitride is hyperbranched polyester modified nano silicon nitride, and the preparation method comprises the following steps: adding silicon nitride into a mixed solution of absolute ethyl alcohol, an aminosilane coupling agent and water, stirring, performing ultrasonic dispersion to obtain a silicon nitride dispersion solution, heating, performing heat preservation reaction, filtering, washing and drying after the reaction is finished to obtain amino-functionalized modified nano silicon nitride powder, performing ultrasonic dispersion on the obtained amino-functionalized modified nano silicon nitride powder into N, N-dimethylformamide, adding a carboxyl-terminated hyperbranched polyester solution containing p-toluenesulfonic acid, stirring, filtering, washing and drying to obtain hyperbranched polyester modified nano silicon nitride.
6. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 5, wherein the mass fraction ratio of the mixed solution of the absolute ethyl alcohol, the aminosilane coupling agent and water is 6-9: 2: 1, the mass fraction of the carboxyl-terminated hyperbranched polyester solution is 0.3-0.5 wt%, and in the heat preservation reaction, the reaction temperature is 70-80 ℃ and the reaction time is 4-6 h.
7. The formula of the environment-friendly recycled high-wear-resistance rubber and plastic material as claimed in claim 5, wherein the preparation of the carboxyl-terminated hyperbranched polyester comprises the following steps: under the protection of nitrogen, adding trimethylolpropane and 2, 2-dimethylolpropionic acid into a reaction container, heating to 136-140 ℃, adding stannous octoate when reactants are in a molten state, and keeping stirring for reaction for 3-5 hours to obtain hydroxyl-terminated hyperbranched polyester, wherein the weight ratio of the trimethylolpropane, the 2, 2-dimethylolpropionic acid and the stannous octoate is 1: 21-25: 0.07 to 0.12.
8. The formulation of claim 1, wherein the modified short lignocellulose fiber is modified by epoxy silane coupling agent, the antioxidant comprises one or more of antioxidant 1010, antioxidant 1076, antioxidant 1330, antioxidant 3114, antioxidant 168, antioxidant 626 and antioxidant DLTP, the foaming agent is azodicarbonamide, and the accelerator is zinc dimethyldithiocarbamate.
9. The production process of the environment-friendly recycled high-wear-resistance rubber and plastic material is characterized by comprising the following steps of:
s1, sequentially weighing carboxyl nitrile rubber, methyl vinyl silicone rubber, ethylene-vinyl acetate copolymer, polypropylene thermoplastic elastomer, modified nano titanium dioxide, modified nano silicon nitride, modified lignocellulose short fiber, zinc stearate, nano barium sulfate, foaming agent, accelerant and antioxidant according to parts by weight, putting into an internal mixer, stirring uniformly, then internally mixing, and controlling the water temperature of the internal mixer to be below 78 ℃;
s2, feeding the internally mixed discharged materials into an open mill for open milling, and discharging and cooling;
s3, putting the milled material sheet into an extruder for extrusion molding;
and S4, feeding the formed material sheet into a flat vulcanizing machine for vulcanization foaming treatment, and packaging to obtain a rubber and plastic material finished product.
10. The production process according to claim 9, wherein in step S1, the banburying temperature is 110-120 ℃, the banburying time is 15-20 min, in step S2, the front roller temperature in the open mixing is 80-90 ℃, the rear roller temperature is 70-80 ℃, the roller spacing is 0.3-0.7 mm, and in step S4, the vulcanization foaming temperature is 165-182 ℃, and the foaming time is 5-8 min.
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