CN113502044A - Pu's alloy furnace roller and preparation method thereof - Google Patents
Pu's alloy furnace roller and preparation method thereof Download PDFInfo
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- CN113502044A CN113502044A CN202110844073.9A CN202110844073A CN113502044A CN 113502044 A CN113502044 A CN 113502044A CN 202110844073 A CN202110844073 A CN 202110844073A CN 113502044 A CN113502044 A CN 113502044A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The invention belongs to the technical field of furnace rollers, and particularly relates to a pu's alloy furnace roller and a preparation method thereof, wherein the technical scheme is as follows: the corrosion inhibitor comprises main materials, filler and a resistance agent, wherein the main materials comprise polyurethane, polyvinyl chloride, copper and iron, the filler comprises light calcium carbonate and white carbon black, the resistance agent comprises a plasticizer, a stabilizer, an internal lubricant, an external lubricant, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor, and the main materials (in parts by weight) are respectively: 30-60 parts of polyurethane, 30-60 parts of polyvinyl chloride, 30-60 parts of copper and 30-60 parts of iron, wherein the filler comprises the following components in parts by weight: 10-25 parts of light calcium carbonate and 10-25 parts of white carbon black, and the invention has the beneficial effects that: the preparation method has low cost, and increases the tensile strength, the hardness and the ageing resistance, thereby reducing the effect of the breaking rate of the furnace roller in use.
Description
Technical Field
The invention relates to the field of furnace rollers, in particular to a pu's alloy furnace roller and a preparation method thereof.
Background
The furnace bottom roller is a large-caliber furnace bottom roller for a continuous annealing treatment production line.
The hearth roll is made into a heat-resistant alloy steel hollow hearth roll made of various national standard materials with a small caliber of 60 mm-1600 mm; the hearth temperature is different from 850 ℃ to 1200 ℃, and the used materials are also different; the method is suitable for annealing treatment of common carbon tubes, oil well pipes, stainless steel pipes and the like; in particular to a large-caliber hearth roll for a continuous annealing treatment production line with higher requirement on reliability.
The prior art has the following defects: most of the existing furnace rollers are made of silicon steel, and the preparation method has high cost and low tensile strength, and the phenomenon of surface fracture is easy to occur in use.
Therefore, the invention of the pu's alloy furnace roller is necessary.
Disclosure of Invention
In order to achieve the above purpose, the invention provides the following technical scheme: the pu's alloy furnace roller comprises main materials, filler and a resistance agent, wherein the main materials comprise polyurethane, polyvinyl chloride, copper and iron, the filler comprises light calcium carbonate and white carbon black, and the resistance agent comprises a plasticizer, a stabilizer, an internal lubricant, an external lubricant, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the main materials (by weight portion) are respectively as follows: 30-60 parts of polyurethane, 30-60 parts of polyvinyl chloride, 30-60 parts of copper and 30-60 parts of iron;
the filler (by weight) is respectively as follows: 10-25 parts of light calcium carbonate and 10-25 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 7-10 parts of plasticizer, 7-10 parts of stabilizer, 7-10 parts of internal lubricant, 7-10 parts of external lubricant, 5-20 parts of vulcanization accelerator, 5-8 parts of aging inhibitor and 5-8 parts of crack inhibitor.
Preferably, the main materials (by weight) are respectively as follows: 30 parts of polyurethane, 30 parts of polyvinyl chloride, 30 parts of copper and 30 parts of iron;
the filler (by weight) is respectively as follows: 10 parts of light calcium carbonate and 10 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of stabilizer, 7 parts of internal lubricant, 7 parts of external lubricant, 5 parts of vulcanization accelerator, 5 parts of aging inhibitor and 5 parts of cracking inhibitor.
Preferably, the main materials (by weight) are respectively as follows: 40 parts of polyurethane, 40 parts of polyvinyl chloride, 40 parts of copper and 40 parts of iron;
the filler (by weight) is respectively as follows: 15 parts of light calcium carbonate and 15 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 8 parts of plasticizer, 8 parts of stabilizer, 8 parts of internal lubricant, 8 parts of external lubricant, 10 parts of vulcanization accelerator, 6 parts of aging inhibitor and 6 parts of cracking inhibitor.
Preferably, the main materials (by weight) are respectively as follows: 50 parts of polyurethane, 50 parts of polyvinyl chloride, 50 parts of copper and 50 parts of iron;
the filler (by weight) is respectively as follows: 20 parts of light calcium carbonate and 20 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 9 parts of plasticizer, 9 parts of stabilizer, 9 parts of internal lubricant, 9 parts of external lubricant, 15 parts of vulcanization accelerator, 7 parts of aging inhibitor and 7 parts of cracking inhibitor.
Preferably, the main materials (by weight) are respectively as follows: 60 parts of polyurethane, 60 parts of polyvinyl chloride, 60 parts of copper and 60 parts of iron;
the filler (by weight) is respectively as follows: 25 parts of light calcium carbonate and 25 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of stabilizer, 10 parts of internal lubricant, 10 parts of external lubricant, 20 parts of vulcanization accelerator, 8 parts of aging inhibitor and 8 parts of cracking inhibitor.
Preferably, the method also comprises a processing method, and specifically comprises the following preparation steps:
s1: putting the thermoplastic polyurethane into a vacuum drying oven, and drying at the temperature of 80 ℃;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles;
s3: putting thermoplastic polyurethane, filler and mixture particles into an open mill, and mixing to form a sheet;
s4: putting the mixture into a casting machine for smelting to obtain a mixed solution;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form;
s7: and putting the furnace roller prototype into a vulcanizing machine for hot-pressing vulcanization, detecting and observing the casting subjected to hot-pressing vulcanization, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
Preferably, the drying time in S1 is set to 6 h.
Preferably, the temperature in the mixer in S3 is set to be 150 ℃, and the mixing time is set to be 15 min.
Preferably, the internal temperature of the vulcanizer in S7 is set at 160 ℃, the pressure is set at 10MPa, and the hot pressing time is set at 3 min.
Compared with the prior art, the pu's alloy furnace roller and the preparation method have the advantages that:
according to the invention, the polyurethane, the polyvinyl chloride, copper and iron are mixed with each other, and then the light calcium carbonate and the white carbon black are added, so that the effects of increasing the tensile strength, the breaking rate and the strength of the mixture are achieved, and the effect of reducing the cost is achieved;
various auxiliary agents are added into the mixture, so that the strength, hardness, ageing resistance and cracking resistance of the mixture are improved, and the effect of improving the durability of the mixed casting is achieved;
under the action of the internal lubricant and the external lubricant, the friction force between the mixture is reduced, so that the mixture is easier to mix;
finally, hot-pressing vulcanization is carried out through a vulcanizing machine, the performance of each aspect of the mixed casting is enhanced, and the pu's alloy furnace roller is obtained, so that the effects of low cost of the preparation mode, increase of tensile strength, hardness and ageing resistance and reduction of the breakage rate of the furnace roller in use are achieved.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
Embodiment 1, the pu's alloy furnace roller provided by the invention comprises the following main materials (in parts by weight): 30 parts of polyurethane, 30 parts of polyvinyl chloride, 30 parts of copper and 30 parts of iron;
polyurethane, abbreviated as PU in English, is a polyurethane which is a high molecular compound;
polyvinyl chloride (PVC), which is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) under the action of initiators such as peroxide and azo compounds or under the action of light and heat according to a free radical polymerization reaction mechanism;
the filler (by weight) is respectively as follows: 10 parts of light calcium carbonate and 10 parts of white carbon black;
precipitated calcium carbonate, also known as PCC for short, reacts with all strong acids to produce water and corresponding calcium salts, while releasing carbon dioxide;
white carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and ultrafine silica gel, and also includes powdery synthetic aluminum silicate, calcium silicate and the like;
the resistance agent comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of stabilizer, 7 parts of internal lubricant, 7 parts of external lubricant, 5 parts of vulcanization accelerator, 5 parts of aging inhibitor and 5 parts of cracking inhibitor;
the plasticizer is dioctyl phthalate which is an important general main plasticizer, is mainly used for processing polyvinyl chloride resin, can also be used for processing high polymers such as chemical fiber resin, acetic resin, ABS resin, rubber and the like, and can also be used for making paint, dye, dispersant and the like;
the stabilizer can slow down the reaction, keep chemical balance, reduce the surface tension, and prevent the effects of light, thermal decomposition or oxidative decomposition and the like;
the internal lubricant has good compatibility with the polymer and can be uniformly dispersed among molecular chains, so that the internal friction of the molecular chains is reduced, the fluidity of the polymer is improved, and the surface finish of the product is improved;
the cohesive energy between the external lubricants is low, so that the friction force between the polymer and the equipment surface can be reduced, and the polymer is prevented from being adhered to the mechanical surface;
the vulcanization accelerator can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
the aging inhibitor is a substance capable of delaying the aging of the high molecular compound, most of which can inhibit the oxidation effect, and some of which can inhibit the heat or light effect, thereby prolonging the service life of the product;
the crack inhibitor is capable of preventing the separation of the inhibiting polymer, thereby preventing the cracking of the object;
the processing method comprises the following specific preparation steps:
s1: putting thermoplastic polyurethane into a vacuum drying oven, drying at 80 ℃, and setting the drying time to be 6h to achieve the effects of ensuring the purity of the polyurethane and preventing polymerization from being influenced;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles, thereby achieving the effect of easily mixing the mixture;
s3: thermoplastic polyurethane, filler and mixture particles are placed into an open mill to be mixed into sheets, the temperature in the open mill is set to be 150 ℃, the mixing time is set to be 15min, and the effect of mixing objects is achieved;
s4: the mixture is put into a casting machine for smelting to obtain mixed liquid, so that the mixing degree of the object is increased, and the casting is convenient to carry out;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form, thereby achieving the effects of preventing the increase of the coagulability of the mixed casting and preventing cracking;
s7: putting the furnace roller prototypes into a vulcanizing machine for hot-pressing vulcanization, wherein the internal temperature of the vulcanizing machine is set at 160 ℃, the pressure is set at 10MPa, and the hot-pressing time is set for 3min, so that the casting is molded, chain molecules in the casting are promoted to be crosslinked into net-shaped molecules, and the effects of improving the performances such as tensile force, hardness, ageing resistance, elasticity and the like are achieved;
s8: and (3) detecting and observing the casting subjected to hot-pressing vulcanization to ensure the integrity of the casting, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
Embodiment 2, the pu's alloy furnace roller provided by the present invention includes the following main materials (by weight): 40 parts of polyurethane, 40 parts of polyvinyl chloride, 40 parts of copper and 40 parts of iron;
polyurethane, abbreviated as PU in English, is a polyurethane which is a high molecular compound;
polyvinyl chloride (PVC), which is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) under the action of initiators such as peroxide and azo compounds or under the action of light and heat according to a free radical polymerization reaction mechanism;
the filler (by weight) is respectively as follows: 15 parts of light calcium carbonate and 15 parts of white carbon black;
precipitated calcium carbonate, also known as PCC for short, reacts with all strong acids to produce water and corresponding calcium salts, while releasing carbon dioxide;
white carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and ultrafine silica gel, and also includes powdery synthetic aluminum silicate, calcium silicate and the like;
the resistance agent comprises the following components in parts by weight: 8 parts of plasticizer, 8 parts of stabilizer, 8 parts of internal lubricant, 8 parts of external lubricant, 10 parts of vulcanization accelerator, 6 parts of aging inhibitor and 6 parts of cracking inhibitor;
the plasticizer is dioctyl phthalate which is an important general main plasticizer, is mainly used for processing polyvinyl chloride resin, can also be used for processing high polymers such as chemical fiber resin, acetic resin, ABS resin, rubber and the like, and can also be used for making paint, dye, dispersant and the like;
the stabilizer can slow down the reaction, keep chemical balance, reduce the surface tension, and prevent the effects of light, thermal decomposition or oxidative decomposition and the like;
the internal lubricant has good compatibility with the polymer and can be uniformly dispersed among molecular chains, so that the internal friction of the molecular chains is reduced, the fluidity of the polymer is improved, and the surface finish of the product is improved;
the cohesive energy between the external lubricants is low, so that the friction force between the polymer and the equipment surface can be reduced, and the polymer is prevented from being adhered to the mechanical surface;
the vulcanization accelerator can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
the aging inhibitor is a substance capable of delaying the aging of the high molecular compound, most of which can inhibit the oxidation effect, and some of which can inhibit the heat or light effect, thereby prolonging the service life of the product;
the crack inhibitor is capable of preventing the separation of the inhibiting polymer, thereby preventing the cracking of the object;
the processing method comprises the following specific preparation steps:
s1: putting thermoplastic polyurethane into a vacuum drying oven, drying at 80 ℃, and setting the drying time to be 6h to achieve the effects of ensuring the purity of the polyurethane and preventing polymerization from being influenced;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles, thereby achieving the effect of easily mixing the mixture;
s3: thermoplastic polyurethane, filler and mixture particles are placed into an open mill to be mixed into sheets, the temperature in the open mill is set to be 150 ℃, the mixing time is set to be 15min, and the effect of mixing objects is achieved;
s4: the mixture is put into a casting machine for smelting to obtain mixed liquid, so that the mixing degree of the object is increased, and the casting is convenient to carry out;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form, thereby achieving the effects of preventing the increase of the coagulability of the mixed casting and preventing cracking;
s7: putting the furnace roller prototypes into a vulcanizing machine for hot-pressing vulcanization, wherein the internal temperature of the vulcanizing machine is set at 160 ℃, the pressure is set at 10MPa, and the hot-pressing time is set for 3min, so that the casting is molded, chain molecules in the casting are promoted to be crosslinked into net-shaped molecules, and the effects of improving the performances such as tensile force, hardness, ageing resistance, elasticity and the like are achieved;
s8: and (3) detecting and observing the casting subjected to hot-pressing vulcanization to ensure the integrity of the casting, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
Embodiment 3, the pu's alloy furnace roller provided by the present invention includes the following main materials (by weight): 50 parts of polyurethane, 50 parts of polyvinyl chloride, 50 parts of copper and 50 parts of iron;
polyurethane, abbreviated as PU in English, is a polyurethane which is a high molecular compound;
polyvinyl chloride (PVC), which is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) under the action of initiators such as peroxide and azo compounds or under the action of light and heat according to a free radical polymerization reaction mechanism;
the filler (by weight) is respectively as follows: 20 parts of light calcium carbonate and 20 parts of white carbon black;
precipitated calcium carbonate, also known as PCC for short, reacts with all strong acids to produce water and corresponding calcium salts, while releasing carbon dioxide;
white carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and ultrafine silica gel, and also includes powdery synthetic aluminum silicate, calcium silicate and the like;
the resistance agent comprises the following components in parts by weight: 9 parts of plasticizer, 9 parts of stabilizer, 9 parts of internal lubricant, 9 parts of external lubricant, 15 parts of vulcanization accelerator, 7 parts of aging inhibitor and 7 parts of cracking inhibitor;
the plasticizer is dioctyl phthalate which is an important general main plasticizer, is mainly used for processing polyvinyl chloride resin, can also be used for processing high polymers such as chemical fiber resin, acetic resin, ABS resin, rubber and the like, and can also be used for making paint, dye, dispersant and the like;
the stabilizer can slow down the reaction, keep chemical balance, reduce the surface tension, and prevent the effects of light, thermal decomposition or oxidative decomposition and the like;
the internal lubricant has good compatibility with the polymer and can be uniformly dispersed among molecular chains, so that the internal friction of the molecular chains is reduced, the fluidity of the polymer is improved, and the surface finish of the product is improved;
the cohesive energy between the external lubricants is low, so that the friction force between the polymer and the equipment surface can be reduced, and the polymer is prevented from being adhered to the mechanical surface;
the vulcanization accelerator can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
the aging inhibitor is a substance capable of delaying the aging of the high molecular compound, most of which can inhibit the oxidation effect, and some of which can inhibit the heat or light effect, thereby prolonging the service life of the product;
the crack inhibitor is capable of preventing the separation of the inhibiting polymer, thereby preventing the cracking of the object;
the processing method comprises the following specific preparation steps:
s1: putting thermoplastic polyurethane into a vacuum drying oven, drying at 80 ℃, and setting the drying time to be 6h to achieve the effects of ensuring the purity of the polyurethane and preventing polymerization from being influenced;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles, thereby achieving the effect of easily mixing the mixture;
s3: thermoplastic polyurethane, filler and mixture particles are placed into an open mill to be mixed into sheets, the temperature in the open mill is set to be 150 ℃, the mixing time is set to be 15min, and the effect of mixing objects is achieved;
s4: the mixture is put into a casting machine for smelting to obtain mixed liquid, so that the mixing degree of the object is increased, and the casting is convenient to carry out;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form, thereby achieving the effects of preventing the increase of the coagulability of the mixed casting and preventing cracking;
s7: putting the furnace roller prototypes into a vulcanizing machine for hot-pressing vulcanization, wherein the internal temperature of the vulcanizing machine is set at 160 ℃, the pressure is set at 10MPa, and the hot-pressing time is set for 3min, so that the casting is molded, chain molecules in the casting are promoted to be crosslinked into net-shaped molecules, and the effects of improving the performances such as tensile force, hardness, ageing resistance, elasticity and the like are achieved;
s8: and (3) detecting and observing the casting subjected to hot-pressing vulcanization to ensure the integrity of the casting, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
Embodiment 4, the pu's alloy furnace roller provided by the present invention includes the following main materials (in parts by weight): 60 parts of polyurethane, 60 parts of polyvinyl chloride, 60 parts of copper and 60 parts of iron;
polyurethane, abbreviated as PU in English, is a polyurethane which is a high molecular compound;
polyvinyl chloride (PVC), which is a polymer obtained by polymerizing Vinyl Chloride Monomer (VCM) under the action of initiators such as peroxide and azo compounds or under the action of light and heat according to a free radical polymerization reaction mechanism;
the filler (by weight) is respectively as follows: 25 parts of light calcium carbonate and 25 parts of white carbon black;
precipitated calcium carbonate, also known as PCC for short, reacts with all strong acids to produce water and corresponding calcium salts, while releasing carbon dioxide;
white carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and ultrafine silica gel, and also includes powdery synthetic aluminum silicate, calcium silicate and the like;
the resistance agent comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of stabilizer, 10 parts of internal lubricant, 10 parts of external lubricant, 20 parts of vulcanization accelerator, 8 parts of aging inhibitor and 8 parts of cracking inhibitor
The plasticizer is dioctyl phthalate which is an important general main plasticizer, is mainly used for processing polyvinyl chloride resin, can also be used for processing high polymers such as chemical fiber resin, acetic resin, ABS resin, rubber and the like, and can also be used for making paint, dye, dispersant and the like;
the stabilizer can slow down the reaction, keep chemical balance, reduce the surface tension, and prevent the effects of light, thermal decomposition or oxidative decomposition and the like;
the internal lubricant has good compatibility with the polymer and can be uniformly dispersed among molecular chains, so that the internal friction of the molecular chains is reduced, the fluidity of the polymer is improved, and the surface finish of the product is improved;
the cohesive energy between the external lubricants is low, so that the friction force between the polymer and the equipment surface can be reduced, and the polymer is prevented from being adhered to the mechanical surface;
the vulcanization accelerator can promote substances with vulcanization effect, can shorten vulcanization time, reduce vulcanization temperature, reduce the consumption of vulcanizing agent, improve the physical and mechanical properties of rubber and the like;
the aging inhibitor is a substance capable of delaying the aging of the high molecular compound, most of which can inhibit the oxidation effect, and some of which can inhibit the heat or light effect, thereby prolonging the service life of the product;
the crack inhibitor is capable of preventing the separation of the inhibiting polymer, thereby preventing the cracking of the object;
the processing method comprises the following specific preparation steps:
s1: putting thermoplastic polyurethane into a vacuum drying oven, drying at 80 ℃, and setting the drying time to be 6h to achieve the effects of ensuring the purity of the polyurethane and preventing polymerization from being influenced;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles, thereby achieving the effect of easily mixing the mixture;
s3: thermoplastic polyurethane, filler and mixture particles are placed into an open mill to be mixed into sheets, the temperature in the open mill is set to be 150 ℃, the mixing time is set to be 15min, and the effect of mixing objects is achieved;
s4: the mixture is put into a casting machine for smelting to obtain mixed liquid, so that the mixing degree of the object is increased, and the casting is convenient to carry out;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form, thereby achieving the effects of preventing the increase of the coagulability of the mixed casting and preventing cracking;
s7: putting the furnace roller prototypes into a vulcanizing machine for hot-pressing vulcanization, wherein the internal temperature of the vulcanizing machine is set at 160 ℃, the pressure is set at 10MPa, and the hot-pressing time is set for 3min, so that the casting is molded, chain molecules in the casting are promoted to be crosslinked into net-shaped molecules, and the effects of improving the performances such as tensile force, hardness, ageing resistance, elasticity and the like are achieved;
s8: and (3) detecting and observing the casting subjected to hot-pressing vulcanization to ensure the integrity of the casting, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
Taking the methods of the above examples 1 to 4, respectively, 50 parts of pu's alloy furnace roller was manufactured by each method, and the tensile strength, the breaking rate, the hardness and the aging resistance of each part of pu's alloy furnace roller were measured, respectively, to obtain the following data:
as can be seen from the above table, the method in example 3 is suitable, after the pu's alloy furnace roller is prepared, the tensile strength, the fracture rate, the hardness and the aging resistance of the pu's alloy furnace roller are improved, the tensile strength, the fracture rate and the strength of the mixture are improved by mixing polyurethane, polyvinyl chloride, copper and iron, and then adding light calcium carbonate and white carbon black, and the cost is reduced, the strength, the hardness, the aging resistance and the cracking resistance of the mixture are improved by adding various additives into the mixture, the durability of the mixed casting is improved, under the action of the internal lubricant and the external lubricant, the friction force between the mixture is reduced, the mixture is easier to mix, and finally, the hot press vulcanization is performed by a vulcanizing machine, the performances of all aspects of the mixed casting are enhanced, so that the pu's alloy furnace roller is obtained, thereby achieving the effects of low cost of the preparation method, increasing the tensile strength, the hardness and the ageing resistance, and reducing the fracture rate of the furnace roller in use.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (9)
1. A pu's alloy stove roller which characterized in that: the corrosion inhibitor comprises main materials, filler and a resistance agent, wherein the main materials comprise polyurethane, polyvinyl chloride, copper and iron, the filler comprises light calcium carbonate and white carbon black, and the resistance agent comprises a plasticizer, a stabilizer, an internal lubricant, an external lubricant, a vulcanization accelerator, an aging inhibitor and a cracking inhibitor;
the main materials (by weight portion) are respectively as follows: 30-60 parts of polyurethane, 30-60 parts of polyvinyl chloride, 30-60 parts of copper and 30-60 parts of iron;
the filler (by weight) is respectively as follows: 10-25 parts of light calcium carbonate and 10-25 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 7-10 parts of plasticizer, 7-10 parts of stabilizer, 7-10 parts of internal lubricant, 7-10 parts of external lubricant, 5-20 parts of vulcanization accelerator, 5-8 parts of aging inhibitor and 5-8 parts of crack inhibitor.
2. The pu's alloy furnace roller of claim 1, wherein: the main materials (by weight portion) are respectively as follows: 30 parts of polyurethane, 30 parts of polyvinyl chloride, 30 parts of copper and 30 parts of iron;
the filler (by weight) is respectively as follows: 10 parts of light calcium carbonate and 10 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 7 parts of plasticizer, 7 parts of stabilizer, 7 parts of internal lubricant, 7 parts of external lubricant, 5 parts of vulcanization accelerator, 5 parts of aging inhibitor and 5 parts of cracking inhibitor.
3. The pu's alloy furnace roller of claim 1, wherein: the main materials (by weight portion) are respectively as follows: 40 parts of polyurethane, 40 parts of polyvinyl chloride, 40 parts of copper and 40 parts of iron;
the filler (by weight) is respectively as follows: 15 parts of light calcium carbonate and 15 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 8 parts of plasticizer, 8 parts of stabilizer, 8 parts of internal lubricant, 8 parts of external lubricant, 10 parts of vulcanization accelerator, 6 parts of aging inhibitor and 6 parts of cracking inhibitor.
4. The pu's alloy furnace roller of claim 1, wherein: the main materials (by weight portion) are respectively as follows: 50 parts of polyurethane, 50 parts of polyvinyl chloride, 50 parts of copper and 50 parts of iron;
the filler (by weight) is respectively as follows: 20 parts of light calcium carbonate and 20 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 9 parts of plasticizer, 9 parts of stabilizer, 9 parts of internal lubricant, 9 parts of external lubricant, 15 parts of vulcanization accelerator, 7 parts of aging inhibitor and 7 parts of cracking inhibitor.
5. The pu's alloy furnace roller of claim 1, wherein: the main materials (by weight portion) are respectively as follows: 60 parts of polyurethane, 60 parts of polyvinyl chloride, 60 parts of copper and 60 parts of iron;
the filler (by weight) is respectively as follows: 25 parts of light calcium carbonate and 25 parts of white carbon black;
the resistance agent comprises the following components in parts by weight: 10 parts of plasticizer, 10 parts of stabilizer, 10 parts of internal lubricant, 10 parts of external lubricant, 20 parts of vulcanization accelerator, 8 parts of aging inhibitor and 8 parts of cracking inhibitor.
6. The pu's alloy furnace roller of claim 1, wherein: the processing method comprises the following specific preparation steps:
s1: putting the thermoplastic polyurethane into a vacuum drying oven, and drying at the temperature of 80 ℃;
s2: putting the polyvinyl chloride and various resistance agents on a double-screw extruder for extrusion granulation to obtain mixture particles;
s3: putting thermoplastic polyurethane, filler and mixture particles into an open mill, and mixing to form a sheet;
s4: putting the mixture into a casting machine for smelting to obtain a mixed solution;
s5: pouring the smelted mixed solution into a casting mold, and performing solidification molding;
s6: placing the solidified and formed casting into a water tank, and cooling and condensing to obtain a furnace roller embryonic form;
s7: putting the furnace roller prototypes into a vulcanizing machine for hot-pressing vulcanization;
s8: and (3) detecting and observing the casting subjected to hot pressing vulcanization, and then grinding and polishing the detected and observed casting to obtain the pu's alloy furnace roller.
7. The pu's alloy furnace roller of claim 6, wherein: the drying time in S1 was set to 6 h.
8. The pu's alloy furnace roller of claim 6, wherein: the temperature in the mixer in S3 is set to be 150 ℃, and the mixing time is set to be 15 min.
9. The pu's alloy furnace roller of claim 6, wherein: the internal temperature of the vulcanizer in S7 is set at 160 ℃, the pressure is set at 10MPa, and the hot pressing time is set at 3 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110844073.9A CN113502044A (en) | 2021-07-26 | 2021-07-26 | Pu's alloy furnace roller and preparation method thereof |
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| CN202110844073.9A CN113502044A (en) | 2021-07-26 | 2021-07-26 | Pu's alloy furnace roller and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892382A (en) * | 2021-01-18 | 2021-06-04 | 托普工业(江苏)有限公司 | Pushi alloy furnace roller dosing unit |
| CN112975686A (en) * | 2021-01-18 | 2021-06-18 | 托普工业(江苏)有限公司 | Production device and production process of pu's alloy furnace roller |
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2021
- 2021-07-26 CN CN202110844073.9A patent/CN113502044A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892382A (en) * | 2021-01-18 | 2021-06-04 | 托普工业(江苏)有限公司 | Pushi alloy furnace roller dosing unit |
| CN112975686A (en) * | 2021-01-18 | 2021-06-18 | 托普工业(江苏)有限公司 | Production device and production process of pu's alloy furnace roller |
Non-Patent Citations (1)
| Title |
|---|
| 郑昌仁等: ""PVC/PU合金的制备与研究"", 《弹性体》, vol. 1, no. 2, pages 864 - 29 * |
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