CN111286989B - High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof - Google Patents
High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof Download PDFInfo
- Publication number
- CN111286989B CN111286989B CN202010124874.3A CN202010124874A CN111286989B CN 111286989 B CN111286989 B CN 111286989B CN 202010124874 A CN202010124874 A CN 202010124874A CN 111286989 B CN111286989 B CN 111286989B
- Authority
- CN
- China
- Prior art keywords
- wear
- resistant
- air cushion
- conveyor belt
- strength
- 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.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
- D06N3/065—PVC together with other resins except polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/142—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer
- D06N3/144—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer with polyurethane and polymerisation products, e.g. acrylics, PVC
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/186—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/04—Properties of the materials having electrical or magnetic properties
- D06N2209/046—Anti-static
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1642—Hardnes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/04—Belts
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Belt Conveyors (AREA)
Abstract
The invention belongs to the field of air cushion conveyor belts, and discloses a high-strength, wear-resistant and antistatic air cushion conveyor belt and a preparation method thereof. The air cushion conveyor belt is composed of a middle polyester framework fabric layer, two pvc layers and a polyurethane rivet structure, wherein the polyurethane rivet structure penetrates through a gap of the polyester framework fabric layer to realize three-dimensional connection and compounding of the two pvc layers and the polyester framework fabric layer, and tensile strength and tear resistance of the air cushion conveyor belt can be remarkably improved. And the graphene-coated porous silicon material is used as a filler, so that good reinforcing effect, antistatic effect and wear-resistant effect can be further achieved. Has obvious improvement significance.
Description
Technical Field
The invention relates to the field of air cushion conveyor belts, in particular to a high-strength, wear-resistant and antistatic air cushion conveyor belt and a preparation method thereof.
Background
Air cushion conveying is a belt conveying mode that a conveying belt and materials on the conveying belt are supported by a thin air film. The carrier roller is replaced by an air chamber disk groove with holes, when air with certain pressure and flow is provided to the air chamber by an air source, the air in the air chamber escapes from the small holes on the disk groove, and a layer of air film with certain pressure is formed between the conveyor belt and the disk groove to support the conveyor belt and upper materials thereof. The roller supports arranged at a certain interval are changed into continuous air cushion supports, so that the roller friction between the conveying belt and the roller is changed into fluid friction between the conveying belt and the disc groove by taking air as a medium, the running resistance is reduced, and a plurality of advantages are brought. However, at present, there are many problems in the conveyor belts for air cushion conveying, such as strength, abrasion resistance and antistatic property, which are to be further improved.
The PVC conveying belt is used as a light conveying belt and is widely applied to multiple industries due to the advantages of light weight, long service life, good flame retardance and the like. The PVC conveyor belt has high surface resistance and high insulation, and formed static electricity is difficult to eliminate. The transmission of the air cushion conveyor belt and the material conveying are realized by means of friction force, when the materials fall onto the belt, friction is generated between the materials and the belt, meanwhile, static electricity is generated due to the friction between the objects, and due to the action of the static electricity, part of the materials in contact with the belt are adhered to the belt and cannot enter the next procedure, so that the normal operation of the air cushion conveyor is influenced finally.
The existing antistatic conveying belt usually adopts a mode of adding conductive additives such as conductive carbon black, conductive fibers or other antistatic agents to accelerate static electricity release so as to avoid the accumulation of a large amount of static electricity, but the problem of poor bonding force with a PVC conveying belt substrate generally exists in the conductive additives such as the conductive carbon black or the conductive fibers which are not specially treated, so that the strength of the PVC conveying belt is reduced, and the service life is influenced.
Air cushion belt conveying is a common mode for conveying materials such as powder materials, when the materials fall onto a belt, friction is generated between the materials and the belt, and besides static electricity, the belt is seriously abraded due to the friction of particle materials. In addition, the conveyer belt needs to bear larger pulling force in the transmission process and the material loading process, and the strength or the tear resistance of the conveyer belt is also a key factor influencing the service life of the conveyer belt. Therefore, how to improve the abrasion resistance and tear resistance of the conveyor belt is the direction of research by those skilled in the art. For example, patent 201811030740.4 discloses that hollow glass beads with light weight, high strength and good heat-insulating property are adopted to significantly improve the wear resistance and impact resistance of the material, and endow the light conveyor belt with low density and high pressure resistance. Patent 200710020742.0 discloses a rubber conveyor belt with longitudinal and oriented short aramid fibers to improve tear resistance and wear resistance. However, the above method still has the problems of weak bonding force between the modified material and the matrix material or complex preparation method.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention mainly aims to provide a preparation method of a high-strength, wear-resistant and antistatic air cushion conveyor belt.
The invention also aims to provide the air cushion conveyor belt which is high in strength, wear-resistant and antistatic.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a high-strength, wear-resistant and antistatic air cushion conveyor belt comprises the following preparation steps:
(1) heating, stirring and uniformly mixing the pvc paste resin, a diluent, a plasticizer, a heat stabilizer, a wear-resistant antistatic filler, polyol and a catalyst, and defoaming in vacuum to obtain a pvc coating paste A;
(2) heating, stirring and uniformly mixing the pvc paste resin, a diluent, a plasticizer, a heat stabilizer, a wear-resistant antistatic filler and isocyanate, and defoaming in vacuum to obtain a pvc coating paste B;
(3) carrying out heat setting treatment on the polyester framework fabric, and then respectively coating pvc coating paste A and pvc coating paste B on two sides of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 40-120 ℃, then performing rolling shaping under the vacuum condition and at the temperature of 80-130 ℃, and finally curing at the temperature of 140-220 ℃ to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Further, the weight parts of the raw materials in the steps (1) and (2) are as follows:
isocyanate and polyol according to the functional group molar ratio NCO/OH of 0.8-2: 1;
the adding amount of the catalyst is 0.1-0.4% of the mass of the polyhydric alcohol;
the total mass of the isocyanate and the polyol is 5-30% of the total mass of the pvc paste resin in the steps (1) and (2).
Further, the diluent is hydrocarbon solvent oil, such as Exxsol (product of commerce)TM D40、ExxsolTMD80、IsoparTM H、IsoparTML, and the like.
Further, the plasticizer is at least one of di (2-ethylhexyl) phthalate (DOP), dibutyl phthalate (DBP), di-n-octyl phthalate (DNOP) and dioctyl terephthalate (DOTP).
Further, the heat stabilizer is a barium-zinc heat stabilizer or a calcium-zinc heat stabilizer.
Further, the wear-resistant antistatic filler is a graphene-coated porous silicon material.
Further, the graphene-coated porous silicon material is prepared by the following method:
the preparation method comprises the steps of powdering Si-Zn alloy into nanoscale or micron-sized alloy powder, adding the alloy powder into graphene oxide aqueous dispersion, stirring at normal temperature for reaction, carrying out in-situ reduction on graphene oxide by active metal Zn to obtain a graphene-coated Zn-Si composite material, adding inorganic acid, and etching to remove Zn and oxides thereof to obtain the graphene-coated porous silicon material.
Further, the polyol is at least one of adipic acid polyester polyol, phthalic anhydride polyester polyol, polycaprolactone polyol, polycarbonate diol, polypropylene oxide triol and polytetrahydrofuran ether diol; the molecular weight of the polyalcohol is 500-4000, and the average functionality is 2-3.
Further, the catalyst is any one of an organotin-based catalyst, an organobismuth-based catalyst and an ammonia-based catalyst.
Further, the isocyanate is one or the combination of more than two of diphenyl methylene diisocyanate, polymethylene polyphenyl isocyanate, toluene diisocyanate and isophorone diisocyanate.
Further, the temperature for heating, stirring and uniformly mixing in the steps (1) and (2) is 40-60 ℃, and the time is 0.5-4 h.
Further, the time of the rolling infiltration gluing reaction in the step (4) is 0.5-6 hours, the time of the rolling shaping is 1-4 hours, and the time of the curing is 1-4 hours.
A high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the method; the high-strength, wear-resistant and antistatic air cushion conveyor belt is composed of a middle polyester framework fabric layer, pvc layers on two surfaces and a polyurethane rivet structure, wherein the polyurethane rivet structure penetrates through the gap of the polyester framework fabric layer to realize three-dimensional connection and compounding of the pvc layers on the two surfaces and the polyester framework fabric layer. The structural schematic diagram of the high-strength, wear-resistant and antistatic air cushion conveyor belt is shown in figure 1.
The principle of the invention is as follows: the conventional PVC conveyer belt is prepared by coating PVC paste resin on a polyester framework fabric, the formed PVC layer has weak binding capacity with the polyester framework fabric, and the problems of easy tearing and poor abrasion resistance exist in the using process. In the invention, polyurethane adhesive components are added into pvc paste resin and coated on two sides of the polyester framework fabric, and in the subsequent rolling infiltration adhesion reaction process, polyol in the pvc coating paste A and isocyanate in the pvc coating paste B are mutually infiltrated, reacted and cured through gaps of the polyester framework fabric to form polyurethane with a rivet structure, so that three-dimensional connection and compounding of the two pvc layers and the polyester framework fabric layer are realized, and the strength and the tear resistance of the air cushion conveyor belt are obviously improved. In addition, the graphene-coated porous silicon material is used as a filler, graphene is one of the materials with the highest known strength and has good conductivity, and the addition of the graphene component is beneficial to improving the mechanical strength of the conveyer belt and can also endow the air cushion conveyer belt with good antistatic performance. In addition, the graphene adopts porous silicon as a carrier, and the capillary action of pores in the porous silicon is utilized to realize wedge nail structure connection between the PVC resin component and the porous silicon, so that the bonding strength of the graphene coated porous silicon material and PVC resin and the dispersion effect in a PVC matrix are obviously improved, and the reinforcement performance and the antistatic performance of the graphene coated porous silicon material are better exerted. Finally, silicon in the graphene-coated porous silicon filler used in the invention has good wear resistance, and the wear resistance of the pvc conveyor belt can be obviously improved.
Compared with the prior art, the invention has the beneficial effects that:
(1) the air cushion conveyor belt realizes three-dimensional connection and compounding of the PVC layers on the two sides and the middle polyester framework fabric layer through the specific polyurethane rivet structure, can obviously improve the tensile strength and the tear resistance of the air cushion conveyor belt, and obviously prolongs the service life.
(2) According to the invention, the graphene-coated porous silicon material is used as a filler, the graphene can endow the PVC matrix material with better reinforcing property and antistatic property than conventional carbon black, and the unique porous structure of the porous silicon can remarkably improve the bonding strength of the graphene-coated porous silicon material and PVC resin and the dispersion effect in the PVC matrix besides endowing the PVC matrix material with better wear resistance, so that the reinforcing effect, the antistatic effect and the wear resistance effect are better exerted, and the effect of killing three birds with one stone is achieved.
Drawings
Fig. 1 is a schematic structural view of the high-strength, wear-resistant and antistatic air cushion conveyor belt of the present invention. The numbering in the figures is as follows: 1-polyester framework fabric layer, 2-pvc layer and 3-polyurethane rivet structure.
Detailed Description
Specific embodiments of the present invention will be described in further detail below with reference to examples and drawings, but the present invention is not limited thereto. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The graphene-coated porous silicon material used in the following examples was prepared by the following method:
ultrasonically stripping and dispersing graphite oxide prepared by a hummer method in deionized water to form a graphene oxide suspension, then adding Si-Zn alloy powder (prepared by an electrode induction gas atomization method of Si-Zn alloy) with the particle size of 1nm-1 mu m, stirring at normal temperature for reacting for 8 hours, carrying out in-situ reduction on the graphene oxide by active metal Zn to obtain a graphene-coated Zn-Si composite material, then adding hydrochloric acid for soaking treatment, etching to remove Zn and oxides thereof, washing, drying and crushing to obtain the graphene-coated porous silicon material.
Example 1
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 10 parts by weight of diluent ExxsolTMD40, 10 parts of plasticizer DOP, 3 parts of barium-zinc heat stabilizer and 3 parts of graphene-coated porous silicon materialHeating and stirring 10 parts by weight of polycaprolactone polyol (molecular weight 2000) and dibutyltin dilaurate catalyst (0.1% of the mass of the polycaprolactone polyol) at 50 ℃ for 2h, uniformly mixing, and carrying out vacuum defoaming to obtain a pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 10 parts by weight of diluent ExxsolTMD40, 10 parts by weight of plasticizer DOP, 3 parts by weight of barium-zinc heat stabilizer, 3 parts by weight of graphene-coated porous silicon material and toluene diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 80 ℃ for 3h, performing rolling shaping treatment at the temperature of 100 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 180 ℃ for 4h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 2
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 100 parts by weight of diluent ExxsolTMD40, 40 parts by weight of plasticizer DOP, 5 parts by weight of barium-zinc heat stabilizer, 15 parts by weight of graphene-coated porous silicon material, 20 parts by weight of polycaprolactone polyol (molecular weight 2000) and dibutyltin dilaurate catalyst (0.1% of the mass of the polycaprolactone polyol), heating and stirring for 2h at 50 ℃, uniformly mixing, and carrying out vacuum defoaming to obtain a pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 100 parts by weight of diluent ExxsolTMD40, 40 parts by weight of plasticizer DOP, 5 parts by weight of barium-zinc heat stabilizer, 15 parts by weight of graphene-coated porous silicon material and toluene diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 100 ℃ for 1h, performing rolling shaping treatment at the temperature of 130 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 3
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of diluent ExxsolTMD40, 20 parts by weight of plasticizer DOP, 4 parts by weight of barium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material, 15 parts by weight of polycaprolactone polyol (molecular weight 2000) and dibutyltin dilaurate catalyst (0.1% of the mass of the polycaprolactone polyol), heating and stirring for 2h at 50 ℃, uniformly mixing, and defoaming in vacuum to obtain pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of diluent ExxsolTMD40, 20 parts by weight of plasticizer DOP, 4 parts by weight of barium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material and toluene diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 100 ℃ for 3h, performing rolling shaping treatment at the temperature of 110 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 4
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of the diluent IsoparTMH. Heating and stirring 20 parts by weight of plasticizer DBP, 4 parts by weight of calcium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material, 15 parts by weight of polyoxypropylene triol (molecular weight 600) and dibutyltin dilaurate catalyst (0.2% of polycaprolactone polyol) at 50 ℃ for 2h, uniformly mixing, and defoaming in vacuum to obtain a pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of the diluent IsoparTMH. Heating and stirring 20 parts by weight of plasticizer DBP, 4 parts by weight of calcium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material and isophorone diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) at 50 ℃ for 2 hours, uniformly mixing, and defoaming in vacuum to obtain a pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 100 ℃ for 3h, performing rolling shaping treatment at the temperature of 110 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 5
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of the diluent IsoparTML, 20 parts by weight of plasticizer DOTP, 4 parts by weight of calcium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material, 15 parts by weight of polyoxypropylene glycol (molecular weight 1000) and bismuth laurate catalyst (0.2% of polycaprolactone polyol) are heated and stirred at 50 ℃ for 2h to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of the diluent IsoparTML, 20 parts of plasticizer DOTP, 4 parts of calcium-zinc heat stabilizer, 8 parts of graphene-coated porous silicon material and isophorone diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 100 ℃ for 3h, performing rolling shaping treatment at the temperature of 110 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 6
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 40 parts by weight of the diluent IsoparTML, 15 parts by weight of plasticizer DOP, 4 parts by weight of calcium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material, 15 parts by weight of polycaprolactone polyol (molecular weight 2000) and bismuth laurate catalyst (0.2% of the mass of the polycaprolactone polyol) are heated and stirred at 50 ℃ for 2h to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 40 parts by weight of the diluent IsoparTML, 15 parts by weight of plasticizer DOP, 4 parts by weight of calcium-zinc heat stabilizer, 8 parts by weight of graphene-coated porous silicon material and isophorone diisocyanate (isocyanate and polyol are in a functional group molar ratio NCO/OH of 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 80 ℃ for 2h, performing rolling shaping treatment at the temperature of 100 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Example 7
The high-strength, wear-resistant and antistatic air cushion conveyor belt is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are admixed with 70 parts by weight of diluent ExxsolTMD80, 30 parts by weight of plasticizer DOP, 4 parts by weight of calcium-zinc heat stabilizer, 10 parts by weight of graphene-coated porous silicon material, 20 parts by weight of polycaprolactone polyol (molecular weight 2000) and bismuth laurate catalyst (0.2% of the mass of the polycaprolactone polyol), heating and stirring for 2 hours at 50 ℃, uniformly mixing, and carrying out vacuum defoaming to obtain pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are admixed with 70 parts by weight of diluent ExxsolTMD80, 30 parts of plasticizer DOP, 4 parts of calcium-zinc heat stabilizer, 10 parts of graphene-coated porous silicon material and toluene diisocyanate (the molar ratio of NCO/OH of isocyanate to polyol is 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoaming is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 80 ℃ for 2h, performing rolling shaping treatment at the temperature of 100 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt.
Comparative example 1
The air cushion conveyor belt of the comparative example is prepared by the following method:
(1) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of diluent ExxsolTMD40, 20 parts by weight of plasticizer DOP, 4 parts by weight of barium-zinc heat stabilizer, 15 parts by weight of polycaprolactone polyol (molecular weight 2000) and dibutyltin dilaurate catalyst (polycaprolactone polyol0.1 percent of the mass of the polyalcohol is heated and stirred for 2 hours at 50 ℃ to be uniformly mixed, and vacuum defoamation is carried out to obtain a pvc coating paste A;
(2) 100 parts by weight of pvc paste resin are mixed with 50 parts by weight of diluent ExxsolTMD40, 20 parts by weight of plasticizer DOP, 4 parts by weight of barium-zinc heat stabilizer and toluene diisocyanate (the molar ratio of NCO/OH of isocyanate to polyol is 1:1) are heated and stirred at 50 ℃ for 2 hours to be uniformly mixed, and vacuum defoamation is carried out to obtain pvc coating paste B;
(3) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and then respectively coating pvc coating paste A and pvc coating paste B on two surfaces of the polyester framework fabric;
(4) and (3) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 100 ℃ for 3h, performing rolling shaping treatment at the temperature of 110 ℃ for 2h under a vacuum condition, and finally performing curing treatment at the temperature of 200 ℃ for 2h to obtain the air cushion conveyor belt.
Comparative example 2
The air cushion conveyor belt of the comparative example is prepared by the following method:
(1) heating and stirring 100 parts by weight of pvc paste resin, 20 parts by weight of plasticizer DOP, 4 parts by weight of barium-zinc heat stabilizer and 8 parts by weight of graphene-coated porous silicon material at 50 ℃ for 2 hours, uniformly mixing, and defoaming in vacuum to obtain a pvc coating paste;
(2) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and coating the pvc coating paste obtained in the step (1) on two surfaces of the polyester framework fabric;
(3) and (3) performing rolling, rolling and shaping treatment on the coated fabric treated in the step (2) at the temperature of 100 ℃ for 2h, and then performing curing treatment at the temperature of 200 ℃ for 2h to obtain the air cushion conveyor belt.
Comparative example 3
The air cushion conveyor belt of the comparative example is prepared by the following method:
(1) heating and stirring 100 parts by weight of pvc paste resin, 20 parts by weight of plasticizer DOP and 4 parts by weight of barium-zinc heat stabilizer at 50 ℃ for 2 hours, uniformly mixing, and defoaming in vacuum to obtain a pvc coating paste;
(2) performing heat setting treatment on the polyester fiber base cloth serving as the framework, and coating the pvc coating paste obtained in the step (1) on two surfaces of the polyester framework fabric;
(3) and (3) performing rolling, rolling and shaping treatment on the coated fabric treated in the step (2) at the temperature of 100 ℃ for 2h, and then performing curing treatment at the temperature of 200 ℃ for 2h to obtain the air cushion conveyor belt.
The strength, abrasion resistance and antistatic performance of the air cushion conveyor belts obtained in the above examples and comparative examples were tested. The strength is tested according to GB/T3690-2009 standard; the abrasion resistance is tested according to the GB/T9867-1988 standard, and the antistatic performance is tested by measuring the surface resistance of a sample under the conditions that the temperature is 25 ℃ and the relative humidity is 65 percent. The measurement results are shown in table 1.
TABLE 1
The results in table 1 show that the three-dimensional connection and compounding of the pvc layers on the two sides and the middle polyester skeleton fabric layer are realized through the specific polyurethane rivet structure, the tensile strength of the air cushion conveyor belt can be obviously improved, the wear resistance and the antistatic property of the conveyor belt can be obviously improved by adding the graphene-coated porous silicon material as the filler, and the graphene-coated porous silicon material as the filler can also achieve a certain reinforcing effect, so that the tensile strength of the conveyor belt is further improved.
Claims (9)
1. A preparation method of a high-strength, wear-resistant and antistatic air cushion conveyor belt is characterized by comprising the following preparation steps:
(1) heating, stirring and uniformly mixing PVC paste resin, a diluent, a plasticizer, a heat stabilizer, wear-resistant antistatic filler, polyol and a catalyst, and defoaming in vacuum to obtain a PVC coating paste A;
(2) heating, stirring and uniformly mixing the PVC paste resin, a diluent, a plasticizer, a heat stabilizer, a wear-resistant antistatic filler and isocyanate, and defoaming in vacuum to obtain a PVC coating paste B;
(3) performing heat setting treatment on the polyester framework fabric, and then respectively coating a PVC coating paste A and a PVC coating paste B on two sides of the polyester framework fabric;
(4) performing rolling infiltration gluing reaction on the coated fabric treated in the step (3) at the temperature of 40-120 ℃, then performing rolling shaping under the vacuum condition and at the temperature of 80-130 ℃, and finally curing at the temperature of 140-220 ℃ to obtain the high-strength, wear-resistant and antistatic air cushion conveyor belt;
the wear-resistant antistatic filler is a graphene-coated porous silicon material and is prepared by the following method:
the preparation method comprises the steps of powdering Si-Zn alloy into nanoscale or micron-sized alloy powder, adding the alloy powder into graphene oxide aqueous dispersion, stirring at normal temperature for reaction, carrying out in-situ reduction on graphene oxide by active metal Zn to obtain a graphene-coated Zn-Si composite material, adding inorganic acid, and etching to remove Zn and oxides thereof to obtain the graphene-coated porous silicon material.
2. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: the weight parts of the raw materials in the steps (1) and (2) are as follows:
100 parts of PVC paste resin;
10-100 parts of a diluent;
10-40 parts of a plasticizer;
3-5 parts of a heat stabilizer;
3-15 parts of a wear-resistant antistatic filler;
isocyanate and polyol according to the functional group molar ratio NCO/OH of 0.8-2: 1;
the adding amount of the catalyst is 0.1-0.4% of the mass of the polyhydric alcohol;
the total mass of the isocyanate and the polyol is 5-30% of the total mass of the PVC paste resin in the steps (1) and (2).
3. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: the diluent is hydrocarbon solvent oil.
4. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: the plasticizer is at least one of di (2-ethylhexyl) phthalate, dibutyl phthalate, di-n-octyl phthalate and dioctyl terephthalate; the heat stabilizer is a barium-zinc heat stabilizer or a calcium-zinc heat stabilizer.
5. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: the polyol is at least one of adipic acid polyester polyol, phthalic anhydride polyester polyol, polycaprolactone polyol, polycarbonate diol, polyoxypropylene triol and polytetrahydrofuran ether diol; the molecular weight of the polyalcohol is 500-4000, and the average functionality is 2-3; the catalyst is any one of organic tin catalysts, organic bismuth catalysts and ammonia catalysts; the isocyanate is one or the combination of more than two of diphenyl methylene diisocyanate, polymethylene polyphenyl isocyanate, toluene diisocyanate and isophorone diisocyanate.
6. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: in the steps (1) and (2), the temperature for heating, stirring and mixing uniformly is 40-60 ℃, and the time is 0.5-4 h.
7. The method for preparing a high-strength, wear-resistant and antistatic air cushion conveyor belt according to claim 1, which is characterized in that: in the step (4), the time of the rolling infiltration gluing reaction is 0.5-6 h, the time of the rolling shaping is 1-4 h, and the time of the curing is 1-4 h.
8. The utility model provides a high-strength, wear-resisting, antistatic air cushion conveyer belt which characterized in that: prepared by the method of any one of claims 1 to 7.
9. A high strength, wear resistant, antistatic air cushion conveyor belt as in claim 8 wherein: the high-strength, wear-resistant and antistatic air cushion conveyor belt is composed of a middle polyester framework fabric layer, PVC layers on two sides and a polyurethane rivet structure, wherein the polyurethane rivet structure penetrates through a gap of the polyester framework fabric layer to realize three-dimensional connection and compounding of the PVC layers on the two sides and the polyester framework fabric layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010124874.3A CN111286989B (en) | 2020-02-27 | 2020-02-27 | High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010124874.3A CN111286989B (en) | 2020-02-27 | 2020-02-27 | High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111286989A CN111286989A (en) | 2020-06-16 |
| CN111286989B true CN111286989B (en) | 2020-12-01 |
Family
ID=71020239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010124874.3A Active CN111286989B (en) | 2020-02-27 | 2020-02-27 | High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111286989B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5999014B2 (en) * | 2013-04-15 | 2016-09-28 | 横浜ゴム株式会社 | Rubber composition for conveyor belt and conveyor belt |
| CN105035627B (en) * | 2015-06-30 | 2017-04-12 | 艾艾精密工业输送系统（上海）股份有限公司 | Low-temperature-resisting logistics conveyor belt and preparing method thereof |
| CN105905522A (en) * | 2015-10-20 | 2016-08-31 | 四平市旭晨胶带有限公司 | Full-polyester whole core conveyer belt and manufacturing method thereof |
| CN108485237A (en) * | 2018-04-13 | 2018-09-04 | 无锡市顺晟工业制带有限公司 | Polyurethane base material permanence antistatic light-type conveyer belt and preparation method thereof |
-
2020
- 2020-02-27 CN CN202010124874.3A patent/CN111286989B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111286989A (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111662633B (en) | Anti-static wear-resistant polyurethane floor coating and preparation method thereof | |
| EP1731658B1 (en) | Process for producing leather-like sheet | |
| CN103467973B (en) | A kind of solvent resistant polyurethane rubber roll and its preparation method and application | |
| EP3388487B1 (en) | Polyurethane curable composition containing polymer fine particles excellent in mechanical strength | |
| CN111809404A (en) | Waterborne polyurethane composite leather and preparation method thereof | |
| CN111548712A (en) | Rapidly-cured building polyurea explosion-proof coating and preparation method thereof | |
| CN111286989B (en) | High-strength, wear-resistant and antistatic air cushion conveyor belt and preparation method thereof | |
| CN104558506A (en) | Polyurethane elastomer containing polyether polyol/nano-SiO2 hybrid material | |
| CN111979790A (en) | Light and thin flexible polyurethane leather and preparation method thereof | |
| CN114163970A (en) | High-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and preparation method thereof | |
| CN113429926B (en) | Polyurethane adhesive and preparation method and application thereof | |
| WO2004092240A1 (en) | Water-based polyurethane composites and synthetic leathers of novel structure | |
| CN113831830B (en) | High-barrier polyurethane self-repairing composition and preparation method thereof | |
| CN109762129B (en) | Photo-reversible self-healing solvent-free polyurethane composition, synthetic leather bass and preparation method | |
| CN115124719B (en) | Terminated POSS-containing polyisocyanate curing agent and weather-resistant anti-fouling anticorrosive polyurethane powder coating | |
| CN115572571A (en) | Single-component polyurethane adhesive for rubber particles and preparation method thereof | |
| CN110591041A (en) | Thermoplastic azide polyurethane elastomer with self-repairability and preparation method thereof | |
| CN111187508B (en) | Preparation method of heat-resistant polyurethane elastomer | |
| CN101177058A (en) | Technique for producing printing blanket airpillow layer | |
| CN210287626U (en) | Special belt of wool weaving carding equipment | |
| CN112606508A (en) | Steel plate conveying belt for conveying metal plates and preparation method thereof | |
| CN116000799B (en) | Antistatic polyurethane polishing pad and preparation method thereof | |
| CN112662302B (en) | Single-component polyurethane spraying material and preparation method and use method thereof | |
| CN217707467U (en) | High-temperature-resistant conveying belt | |
| CN117183501A (en) | High-temperature-resistant conveying belt and preparation method 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |