CN108948499B - Impact-resistant high-strength polyethylene communication pipe and preparation method thereof - Google Patents
Impact-resistant high-strength polyethylene communication pipe and preparation method thereof Download PDFInfo
- Publication number
- CN108948499B CN108948499B CN201810861976.6A CN201810861976A CN108948499B CN 108948499 B CN108948499 B CN 108948499B CN 201810861976 A CN201810861976 A CN 201810861976A CN 108948499 B CN108948499 B CN 108948499B
- Authority
- CN
- China
- Prior art keywords
- titanium
- polyethylene
- parts
- communication pipe
- temperature
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
Abstract
The invention relates to the field of communication pipes, in particular to an impact-resistant high-strength polyethylene communication pipe and a preparation method thereof, wherein the polyethylene communication pipe comprises the following raw materials in parts by weight: 50-80 parts of modified polyethylene, 10-15 parts of ultrahigh molecular weight polyethylene, 1-2 parts of stearic acid monoglyceride, 0.1-1 part of EBS, 2-4 parts of nano silicon dioxide, 1-2 parts of divalent nickel carbon nanotube, 1.2-1.8 parts of filler, 0.2-0.6 part of flexibilizer, 0.1-0.5 part of dioctyl ester, 1-3 parts of silane coupling agent and 2-5 parts of antioxidant CA. The raw materials are mixed and then placed in an extrusion device for melt rotation extrusion, and a tractor is used for traction assistance to obtain the polyethylene communication pipe, wherein the polyethylene communication pipe has good impact resistance.
Description
Technical Field
The invention relates to the technical field of communication pipes, in particular to an impact-resistant high-strength polyethylene communication pipe and a preparation method thereof.
Background
The communication pipe, the underground communication cable protection pipe, mainly installs in the section that communication cable and power line intersect, prevents that the power line from taking place the disconnection and causing the short circuit accident, causes communication cable and wire rope electrified to protection communication cable, switch, machine core board, so that the complete machine is not burnt out, also plays certain isolation to power line magnetic field interference, is the pipeline of using always in modern cable laying engineering.
The plastic pipe is used as a chemical building material formed by high-tech compounding, compared with the traditional pipelines such as a cast iron pipe, a galvanized steel pipe, a cement pipe and the like, the plastic pipe has the advantages of energy conservation, material saving, environmental protection, light weight, high strength, corrosion resistance, smooth and non-scaling inner wall, simple and convenient construction and maintenance, long service life and the like, and is widely applied to the building industry, municipal administration, industry and agricultural fields such as building water supply and drainage, urban and rural water supply and drainage, urban gas, electric power and optical cable sheaths, industrial fluid delivery, agricultural irrigation and the like; the polyethylene pipe has the advantages of good tensile strength and compressive strength, excellent corrosion resistance and low price, and is suitable for being used as a communication pipe.
As is well known, the polyethylene communication pipe used in the current market has the defects of low rigidity, insufficient strength, easy bending deformation, low thermal deformation temperature and the like, the expansion of the application range of the polyethylene communication pipe is seriously influenced, the polyethylene communication pipe is not suitable for the development requirement of the cable laying industry, and the polyethylene communication pipe is easy to generate brittleness in the use process, so that the service life of the polyethylene communication pipe is influenced. In order to ensure the durability of the toughness of the polyethylene pipe, the polyethylene pipe needs to be modified, and if a certain elastomer is used or a certain rigid body is used for toughening, the performance indexes of toughness, rigidity and elastic modulus are unbalanced. Accordingly, there is a need for a high strength telecommunication pipe that is impact resistant and crack resistant.
Disclosure of Invention
In view of the above, the present invention aims to provide an impact-resistant high-strength polyethylene communication pipe and a preparation method thereof, and the prepared polyethylene communication pipe has good impact resistance.
The invention solves the technical problems by the following technical means:
the anti-impact high-strength polyethylene communication pipe is characterized by comprising the following raw materials in parts by weight: 30-60 parts of modified polyethylene, 10-15 parts of ultrahigh molecular weight polyethylene, 1-2 parts of stearic acid monoglyceride, 0.1-1 part of EBS, 2-4 parts of nano silicon dioxide, 1-2 parts of divalent nickel carbon nanotube, 1.2-1.8 parts of filler, 0.2-0.6 part of flexibilizer, 0.1-0.5 part of dioctyl ester, 1-3 parts of silane coupling agent and 2-5 parts of antioxidant CA.
The modified polyethylene is used as a raw material, and the ultrahigh molecular weight polyethylene is added, so that the performance of the raw material is improved, and the aim of improving the strength and the impact resistance of the polyethylene communication pipe is fulfilled; the nano silicon dioxide and the divalent nickel carbon nano tube have stronger strength, can further increase the impact resistance of the communication tube, and improve the frictional wear performance of the communication tube.
Further, the modified polyethylene comprises the following raw materials in parts by weight: 50-80 parts of conventional polyethylene, 0.1-1 part of titanium silicon carbide/titanium and 0.1-1 part of halloysite nanotube.
A proper amount of titanium silicon carbide/titanium and halloysite nanotubes are added into the conventional polyethylene and used as a rigid inorganic filler to play a role in supporting load and resisting external stress deformation in a polyethylene matrix, so that the crystallinity of the polymer is reduced, and the hardness and the impact resistance are improved.
Further, the titanium silicon carbide/titanium is of a core-shell structure with a titanium silicon carbide layer coated outside porous titanium as a core, and the porous titanium is prepared by taking titanium powder and a pore-forming agent as raw materials through a powder metallurgy method.
The porous titanium powder is prepared by mixing the pore-forming agent and the titanium powder through a powder metallurgy method, the process is simple, the cost is low, the pore-forming agent forms a uniform pore structure on the titanium, the reaction contact position of the titanium is increased, and meanwhile, the compressive strength is good.
In addition, the invention also discloses a preparation method of the impact-resistant high-strength polyethylene communication pipe, which comprises the following steps:
modification of polyethylene: placing conventional polyethylene, titanium silicon carbide/titanium and halloysite nanotubes into a high-speed mixer, mixing for 25-30min at the speed of 3000-3500r/min, placing the mixed materials into a grinding device, grinding for 15-20min, then sieving with a 100-mesh sieve, placing the obtained mixed powder into a double-screw extruder, extruding and granulating, and carrying out forced air drying for 6h at 80 ℃ to obtain modified polyethylene;
mixing materials: respectively weighing and mixing modified polyethylene, ultrahigh molecular weight polyethylene, glyceryl monostearate, EBS, nano-silica, a divalent nickel carbon nanotube, a filler, a toughening agent, dioctyl ester, a silane coupling agent and an antioxidant CA, and dispersing by using ultrasonic waves, wherein the ultrasonic frequency is 30-40 KHz, and the dispersion time is 45-60 min to obtain a mixed material;
and (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting, rotating and extruding, and using a tractor for traction assistance to obtain the impact-resistant high-strength polyethylene communication pipe.
Further, in the extrusion molding step, the process conditions of the melt rotation extrusion are as follows: the temperature of the melting section is 180-200 ℃, the temperature of the neck ring section is 210-220 ℃, the rotating speed of the core rod and the neck ring is 12-15 rpm, and the traction speed of the traction machine is 42.5-46.5 r/min.
Further, in the extrusion molding step, the process conditions of the polymer pipe rotating extrusion device are as follows: the temperature of the melting section is 196 ℃, the temperature of the neck ring section is 189 ℃, the rotating speed of the core rod and the neck ring is 9rpm/min, and the traction speed of the traction machine is 44.5 r/min.
Further, in the polyethylene modification step, the process conditions when a double-screw extruder performs extrusion granulation are as follows: the temperature of the first section is 142 ℃, the temperature of the second section is 158 ℃, the temperature of the third section is 176 ℃, the temperature of the fourth section is 187 ℃, the temperature of the fifth section is 204 ℃, the temperature of the sixth section is 219 ℃, the feeding speed is 19r/min, and the rotating speed of the main engine is 34 r/min.
Further, the preparation method of the titanium silicon carbide/titanium comprises the following steps: mixing silicon titanium carbide and porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 1-2h, placing the mixed powder in a nitrogen atmosphere, sintering the mixture for 1h under the conditions of 600-750 ℃ and 40MPa, heating the mixture to 1200-1300 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the 40MPa, cooling the mixture along with the furnace, and grinding the mixture to obtain the silicon titanium carbide/titanium powder.
Further, the preparation method of the porous titanium powder comprises the following steps: placing titanium powder and a pore-forming agent in a ball mill, carrying out ball milling for 4h at the speed of 100-150r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃ again, carrying out heat preservation for 3h, completing sintering, cooling along with a furnace, taking out, and grinding to obtain the porous titanium powder.
Further, the pore-forming agent is sesbania powder with the particle size of 70 mu m. The sesbania powder belongs to an organic material, does not introduce other impurities when being used as a pore-forming agent, can also be used as a temporary adhesive agent in the cold press molding stage, and is more favorable for press molding.
The invention has the beneficial effects that:
(1) the modified polyethylene is adopted as a raw material, the conventional polyethylene is modified by mixing the silicon titanium carbide/titanium and the halloysite nanotube, and the silicon titanium carbide/titanium and the halloysite nanotube play a role in supporting load and resisting external stress deformation in a polyethylene matrix, so that the crystallinity of the polymer is reduced, and the hardness and the shock resistance are improved; the added ultra-high molecular weight polyethylene has excellent performance, so that the purpose that the produced polyethylene communication pipe has high strength while having good impact resistance is achieved by improving the performance of the raw materials.
(2) The titanium silicon carbide/titanium is a core-shell structure which takes porous titanium as a core and is coated with a titanium silicon carbide layer, the porous structure provides more contact points for the modification of polyethylene, the porous titanium powder is prepared by adopting a powder metallurgy method, the process is simple, the cost is lower, sesbania powder is taken as a pore-forming agent, other impurities cannot be introduced, the sesbania powder can also be used as a temporary adhesive in the cold press molding stage, and the compression molding is more facilitated.
Detailed Description
The present invention will be described in detail with reference to specific examples below:
the impact-resistant high-strength polyethylene communication pipe is prepared by taking modified polyethylene and high molecular weight polyethylene as raw materials, wherein the number average molecular weight of the high molecular weight polyethylene is 3000000-5000000 g/mol, adding other additives, mixing, melting and extruding.
The preparation method of the impact-resistant high-strength polyethylene communication pipe comprises the following steps:
example one
Preparing porous titanium: taking 10g of titanium powder and 5g of sesbania powder, placing the titanium powder and the sesbania powder in a ball mill, carrying out ball milling for 4h at the speed of 100r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃, carrying out heat preservation for 3h, completing sintering, cooling with a furnace, taking out, and milling to obtain the porous titanium powder.
Preparation of titanium silicon carbide/titanium: mixing 5g of silicon titanium carbide and 10g of porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 1h, placing the mixed powder in a nitrogen atmosphere, sintering the mixed powder for 1h under the conditions of 650 ℃ and 40MPa of pressure, heating the mixed powder to 1200 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the 40MPa of pressure, cooling the mixed powder along with a furnace, and grinding the mixed powder to obtain the silicon titanium carbide/titanium powder.
Preparation of modified polyethylene: putting 50g of conventional polyethylene, 0.1g of silicon titanium carbide/titanium and 0.5g of halloysite nanotube into a high-speed mixer, mixing materials for 25min at the speed of 3000r/min, putting the mixed materials into a grinding device, grinding for 20min, sieving by a 100-mesh sieve, putting the obtained mixed powder into a double-screw extruder, extruding and granulating under the working conditions that the temperature of a first section is 142 ℃, the temperature of a second section is 158 ℃, the temperature of a third section is 176 ℃, the temperature of a fourth section is 187 ℃, the temperature of a fifth section is 204 ℃, the temperature of a sixth section is 219 ℃, the feeding speed is 19r/min and the rotating speed of a main machine is 34r/min, and then blowing and drying for 6 hours at 80 ℃ to obtain the modified polyethylene; the mixed material with the grain diameter larger than 100 meshes returns to the grinding device to participate in next grinding.
Mixing materials: 50g of modified polyethylene, 10g of ultrahigh molecular weight polyethylene, 1g of glycerol monostearate, 0.5g of EBS, 2.5g of nano silicon dioxide, 2g of divalent nickel carbon nanotube, 1.2g of filler, 0.2g of flexibilizer, 0.1g of dioctyl ester, 1g of silane coupling agent and 2g of antioxidant CA are mixed, and ultrasonic dispersion is adopted, wherein the ultrasonic frequency is 30KHz, and the dispersion time is 50min, so that a mixed material is obtained.
And (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting and rotary extrusion, wherein the temperature of a melting section is 196 ℃, the temperature of a neck ring section is 189 ℃, the rotating speed of the core rod and the neck ring is 9rpm/min, and a tractor is used for traction assistance at the traction speed of 44.5r/min to obtain the impact-resistant high-strength polyethylene communication pipe.
Example two
Preparing porous titanium: taking 10g of titanium powder and 2.5g of sesbania powder, placing the titanium powder and the sesbania powder in a ball mill, carrying out ball milling for 4h at the speed of 130r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃ again, carrying out heat preservation for 3h, completing sintering, cooling along with a furnace, taking out, and grinding to obtain porous titanium powder.
Preparation of titanium silicon carbide/titanium: mixing 5g of silicon titanium carbide and 10g of porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 1.5h, placing the mixed powder in a nitrogen atmosphere, sintering the mixed powder for 1h under the conditions of 600 ℃ and 40MPa of pressure, heating the mixed powder to 1250 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the 40MPa of pressure, cooling the mixed powder along with the furnace, and grinding the mixed powder to obtain the silicon titanium carbide/titanium powder.
Preparation of modified polyethylene: placing 65g of conventional polyethylene, 1g of silicon titanium carbide/titanium and 0.1g of halloysite nanotube into a high-speed mixer, mixing for 25min at the speed of 3200r/min, placing the mixed materials into a grinding device, grinding for 18min, sieving by a 100-mesh sieve, placing the mixed materials with the particle size of less than 100 meshes into a double-screw extruder, extruding and granulating under the working conditions that the temperature of a first section is 142 ℃, the temperature of a second section is 158 ℃, the temperature of a third section is 176 ℃, the temperature of a fourth section is 187 ℃, the temperature of a fifth section is 204 ℃, the temperature of a sixth section is 219 ℃, the feeding speed is 19r/min and the rotating speed of a main machine is 34r/min, and then blowing and drying at 80 ℃ for 6 hours to obtain the modified polyethylene; the mixed material with the grain diameter larger than 100 meshes returns to the grinding device to participate in next grinding.
Mixing materials: 60g of modified polyethylene, 12g of ultrahigh molecular weight polyethylene, 1.5g of glycerol monostearate, 0.1g of EBS, 2g of nano-silica, 1g of divalent nickel carbon nanotube, 1.5g of filler, 0.4g of flexibilizer, 0.3g of dioctyl ester, 2g of silane coupling agent and 3g of antioxidant CA are mixed, and ultrasonic dispersion is adopted, wherein the ultrasonic frequency is 40KHz, and the dispersion time is 60min, so that a mixed material is obtained.
And (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting and rotary extrusion, wherein the temperature of a melting section is 180 ℃, the temperature of a neck ring section is 220 ℃, the rotating speed of the core rod and the neck ring is 12rpm/min, and a tractor is used for traction assistance at the traction speed of 42.5r/min to obtain the impact-resistant high-strength polyethylene communication pipe.
EXAMPLE III
Preparing porous titanium: taking 10g of titanium powder and 3g of sesbania powder, placing the titanium powder and the sesbania powder in a ball mill, carrying out ball milling for 4h at the speed of 150r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃, carrying out heat preservation for 3h, completing sintering, cooling with a furnace, taking out, and milling to obtain the porous titanium powder.
Preparation of titanium silicon carbide/titanium: mixing 5g of silicon titanium carbide and 10g of porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 2h, placing the mixed powder in a nitrogen atmosphere, sintering the mixed powder for 1h under the conditions of 750 ℃ and 40MPa of pressure, heating the mixed powder to 1300 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the 40MPa of pressure, cooling the mixed powder along with a furnace, and grinding the mixed powder to obtain the silicon titanium carbide/titanium powder.
Preparation of modified polyethylene: putting 70g of conventional polyethylene, 0.5g of silicon titanium carbide/titanium and 0.1g of halloysite nanotube into a high-speed mixer, mixing materials for 30min at a speed of 3500r/min, putting the mixed materials into a grinding device, grinding for 15min, sieving by a 100-mesh sieve, putting the mixed materials with the particle size of less than 100 meshes into a double-screw extruder, extruding and granulating under the working conditions that the temperature of a first section is 142 ℃, the temperature of a second section is 158 ℃, the temperature of a third section is 176 ℃, the temperature of a fourth section is 187 ℃, the temperature of a fifth section is 204 ℃, the temperature of a sixth section is 219 ℃, the feeding speed is 19r/min and the rotating speed of a main machine is 34r/min, and then blowing and drying for 6h at 80 ℃ to obtain the modified polyethylene; the mixed material with the grain diameter larger than 100 meshes returns to the grinding device to participate in next grinding.
Mixing materials: 80g of modified polyethylene, 15g of ultrahigh molecular weight polyethylene, 2g of glycerol monostearate, 1g of EBS, 3g of nano silicon dioxide, 1g of divalent nickel carbon nanotube, 1.8g of filler, 0.6g of flexibilizer, 0.5g of dioctyl ester, 3g of silane coupling agent and 5g of antioxidant CA are mixed, ultrasonic dispersion is adopted, the ultrasonic frequency is 40KHz, and the dispersion time is 45min, so that a mixed material is obtained.
And (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting and rotary extrusion, wherein the temperature of a melting section is 200 ℃, the temperature of a neck ring section is 210 ℃, the rotating speed of the core rod and the neck ring is 15rpm/min, and a tractor is used for traction assistance at a traction speed of 46.5r/min to obtain the impact-resistant high-strength polyethylene communication pipe.
Example four
Preparing porous titanium: taking 10g of titanium powder and 4g of sesbania powder, placing the titanium powder and the sesbania powder in a ball mill, carrying out ball milling for 4h at the speed of 110r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃, carrying out heat preservation for 3h, completing sintering, cooling with a furnace, taking out, and milling to obtain the porous titanium powder.
Preparation of titanium silicon carbide/titanium: mixing 5g of silicon titanium carbide and 10g of porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 1.5h, placing the mixed powder in a nitrogen atmosphere, sintering the mixed powder for 1h under the conditions of 700 ℃ and 40MPa of pressure, heating the mixed powder to 1280 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the pressure of 40MPa, cooling the mixed powder along with the furnace, and milling to obtain the silicon titanium carbide/titanium powder.
Preparation of modified polyethylene: placing 80g of conventional polyethylene, 1g of silicon/titanium carbide and 1g of halloysite nanotube into a high-speed mixer, mixing for 28min at the speed of 3300r/min, placing the mixed materials into a grinding device, grinding for 18min, sieving by a 100-mesh sieve, placing the mixed materials with the particle size of less than 100 meshes into a double-screw extruder, extruding and granulating under the working conditions that the temperature of a first section is 142 ℃, the temperature of a second section is 158 ℃, the temperature of a third section is 176 ℃, the temperature of a fourth section is 187 ℃, the temperature of a fifth section is 204 ℃, the temperature of a sixth section is 219 ℃, the feeding speed is 19r/min and the rotating speed of a main machine is 34r/min, and then blowing and drying for 6h at the temperature of 80 ℃ to obtain the modified polyethylene; the mixed material with the grain diameter larger than 100 meshes returns to the grinding device to participate in next grinding.
Mixing materials: 75g of modified polyethylene, 14g of ultrahigh molecular weight polyethylene, 1.6g of glycerol monostearate, 0.8g of EBS, 4g of nano-silica, 1.5g of divalent nickel carbon nanotube, 1.6g of filler, 0.4g of flexibilizer, 0.3g of dioctyl ester, 2g of silane coupling agent and 4g of antioxidant CA are mixed, and ultrasonic dispersion is adopted, wherein the ultrasonic frequency is 38KHz, and the dispersion time is 50min, so that a mixed material is obtained.
And (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting and rotary extrusion, wherein the temperature of a melting section is 195 ℃, the temperature of a neck ring section is 215 ℃, the rotating speed of the core rod and the neck ring is 13rpm/min, and a tractor is used for traction assistance at the traction speed of 44.5r/min to obtain the impact-resistant high-strength polyethylene communication pipe.
Tensile strength tests and impact strength tests were performed on the polyethylene communication pipes of examples one, two, three, and four and on the polyethylene communication pipes purchased in the existing market, according to national standards GB/T1040-2006 and GB/T1843-1996, respectively, and the results are shown in the following table:
it can be seen from the above table that, the polyethylene communication tube prepared by the invention has the advantages that the titanium silicon carbide/titanium and halloysite nanotubes are added to modify the polyethylene as the raw material, the titanium silicon carbide/titanium and halloysite nanotubes play a role in supporting load and resisting external stress deformation in the polyethylene matrix, so that the strength and impact resistance of the polyethylene raw material are improved, and the ultra-high molecular weight polyethylene is added as the raw material, so that the impact strength and tensile strength are greatly improved compared with the existing polyethylene communication tube in the market.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (9)
1. The anti-impact high-strength polyethylene communication pipe is characterized by comprising the following raw materials in parts by weight: 50-80 parts of modified polyethylene, 10-15 parts of ultrahigh molecular weight polyethylene, 1-2 parts of stearic acid monoglyceride, 0.1-1 part of EBS, 2-4 parts of nano silicon dioxide, 1-2 parts of divalent nickel carbon nanotube, 1.2-1.8 parts of filler, 0.2-0.6 part of flexibilizer, 0.1-0.5 part of dioctyl ester, 1-3 parts of silane coupling agent and 2-5 parts of antioxidant CA;
the modified polyethylene comprises the following raw materials in parts by weight: 50-80 parts of conventional polyethylene, 0.1-1 part of titanium silicon carbide/titanium and 0.1-1 part of halloysite nanotube, wherein the titanium silicon carbide/titanium is a core-shell structure which takes porous titanium as a core and is coated with a titanium silicon carbide layer.
2. The impact-resistant high-strength polyethylene communication pipe as claimed in claim 1, wherein the porous titanium is prepared from titanium powder and pore-forming agent by powder metallurgy.
3. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 2, comprising the steps of:
modification of polyethylene: placing conventional polyethylene, titanium silicon carbide/titanium and halloysite nanotubes into a high-speed mixer, mixing for 25-30min at the speed of 3000-3500r/min, placing the mixed materials into a grinding device, grinding for 15-20min, then sieving with a 100-mesh sieve, placing the obtained mixed powder into a double-screw extruder, extruding and granulating, and carrying out forced air drying for 6h at 80 ℃ to obtain modified polyethylene;
mixing materials: respectively weighing and mixing modified polyethylene, ultrahigh molecular weight polyethylene, glyceryl monostearate, EBS, nano-silica, a divalent nickel carbon nanotube, a filler, a toughening agent, dioctyl ester, a silane coupling agent and an antioxidant CA, and dispersing by using ultrasonic waves, wherein the ultrasonic frequency is 30-40 KHz, and the dispersion time is 45-60 min to obtain a mixed material;
and (3) extrusion molding: and (3) putting the mixed material into an extrusion device for melting, rotating and extruding, and using a tractor for traction assistance to obtain the impact-resistant high-strength polyethylene communication pipe.
4. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 3, wherein in the step of extrusion molding, the process conditions of melt-spinning extrusion are as follows: the temperature of the melting section is 180-200 ℃, the temperature of the neck ring section is 210-220 ℃, the rotating speed of the core rod and the neck ring is 12-15 rpm, and the traction speed of the traction machine is 42.5-46.5 r/min.
5. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 4, wherein in the step of extrusion molding, the process conditions of melt-spinning extrusion are as follows: the temperature of the melting section is 196 ℃, the temperature of the neck ring section is 189 ℃, the rotating speed of the core rod and the neck ring is 9rpm/min, and the traction speed of the traction machine is 44.5 r/min.
6. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 3, wherein in the polyethylene modification step, the process conditions of extrusion granulation by a twin-screw extruder are as follows: the temperature of the first section is 142 ℃, the temperature of the second section is 158 ℃, the temperature of the third section is 176 ℃, the temperature of the fourth section is 187 ℃, the temperature of the fifth section is 204 ℃, the temperature of the sixth section is 219 ℃, the feeding speed is 19r/min, and the rotating speed of the main engine is 34 r/min.
7. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 5, wherein the method for preparing the titanium silicon carbide/titanium comprises the following steps: mixing silicon titanium carbide and porous titanium powder, placing the mixture in a ball mill, carrying out ball milling at the speed of 400r/min for 1-2h, placing the mixed powder in a nitrogen atmosphere, sintering the mixture for 1h under the conditions of 600-750 ℃ and 40MPa, heating the mixture to 1200-1300 ℃, carrying out hot-pressing sintering for 2h under the condition of keeping the 40MPa, cooling the mixture along with the furnace, and grinding the mixture to obtain the silicon titanium carbide/titanium powder.
8. The method for preparing an impact-resistant high-strength polyethylene communication pipe according to claim 7, wherein the method for preparing the porous titanium powder comprises the following steps: placing titanium powder and a pore-forming agent in a ball mill, carrying out ball milling for 4h at the speed of 100-150r/min, keeping the pressure for 10min under 75MPa, carrying out cold press molding to obtain a blank, placing the blank in a vacuum environment, heating to 450 ℃ at the speed of 5 ℃/min, carrying out heat preservation for 2.5h, heating to 1300 ℃ again, carrying out heat preservation for 3h, completing sintering, cooling along with a furnace, taking out, and grinding to obtain the porous titanium powder.
9. The method of claim 8, wherein the pore former is sesbania powder with a particle size of 70 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861976.6A CN108948499B (en) | 2018-08-01 | 2018-08-01 | Impact-resistant high-strength polyethylene communication pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861976.6A CN108948499B (en) | 2018-08-01 | 2018-08-01 | Impact-resistant high-strength polyethylene communication pipe and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108948499A CN108948499A (en) | 2018-12-07 |
| CN108948499B true CN108948499B (en) | 2021-04-27 |
Family
ID=64465475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810861976.6A Active CN108948499B (en) | 2018-08-01 | 2018-08-01 | Impact-resistant high-strength polyethylene communication pipe and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108948499B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305381A (en) * | 2019-06-17 | 2019-10-08 | 河南联塑实业有限公司 | A kind of preparation method of fuel gas polyethylene tubing material |
| CN111440371A (en) * | 2020-03-24 | 2020-07-24 | 杭州联通管业有限公司 | Anti-freezing polyethylene power tube and preparation method thereof |
| CN113444307A (en) * | 2021-07-06 | 2021-09-28 | 安徽瑞丰管业有限公司 | High-toughness impact-resistant polyethylene communication pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769116A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Sulfur tolerant shift catalyst and preparation method |
| CN105694182A (en) * | 2016-04-11 | 2016-06-22 | 叶青 | Polyethylene communication pipe formulation |
| CN105906926A (en) * | 2016-07-06 | 2016-08-31 | 吴江佳通光缆有限公司 | High-strength polyethylene tube for communication and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004182826A (en) * | 2002-12-02 | 2004-07-02 | Nissan Motor Co Ltd | Thermoplastic resin composition |
-
2018
- 2018-08-01 CN CN201810861976.6A patent/CN108948499B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769116A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Sulfur tolerant shift catalyst and preparation method |
| CN105694182A (en) * | 2016-04-11 | 2016-06-22 | 叶青 | Polyethylene communication pipe formulation |
| CN105906926A (en) * | 2016-07-06 | 2016-08-31 | 吴江佳通光缆有限公司 | High-strength polyethylene tube for communication and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "埃洛石纳米管对线形低密度聚乙烯的改性作用";杨炳涛等;《塑料工业》;20070630;第35卷(第6期);9-12 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108948499A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108948499B (en) | Impact-resistant high-strength polyethylene communication pipe and preparation method thereof | |
| CN109734988B (en) | High-ring-stiffness inner-rib reinforced corrugated pipe and preparation method thereof | |
| CN102796314B (en) | Masterbatch special for buried polyethylene drainage pipeline | |
| CN101532591A (en) | UPVC pipe material/element and preparation method thereof | |
| CN102558975A (en) | Polypropylene external anti-corrosion material and preparation method of polypropylene external anti-corrosion material powder | |
| CN103012964A (en) | Low-temperature PPR (Polypropylene Random Copolymer) pipe | |
| CN101358008A (en) | Preparation method of special material for buried polyethylene drainage pipe | |
| CN109181046B (en) | Filling master batch special for PE corrugated pipe and preparation method thereof | |
| CN110835430A (en) | Toughened and modified HDPE material and preparation process thereof | |
| CN108864540A (en) | A kind of impact high density polyethylene (HDPE) feed pipe and preparation method thereof | |
| CN112745585A (en) | High-wear-resistance impact-resistant MPP cable protection tube and production process thereof | |
| CN107778691A (en) | PVC silencing drainage pipes and its production method | |
| CN107778618A (en) | Antibacterial impact PE feed pipes and its production method | |
| CN107163360A (en) | A kind of High-strength power cable protection pipe and preparation method thereof | |
| CN108690296A (en) | A kind of polymer plastic expects pipe and preparation method thereof | |
| CN107778694A (en) | High temperature resistant PVC pipe and its production method | |
| CN111333943A (en) | Preparation method of HDPE corrugated pipe material for sewage pipe | |
| CN112143070A (en) | Pipe reinforcing master batch and preparation method thereof | |
| CN113817269A (en) | Scribing-resistant MPP power cable protection pipe and production process thereof | |
| CN111186153A (en) | PE plastic pipeline manufacturing process | |
| CN114573896B (en) | High-density polyethylene double-wall corrugated pipe and preparation method and application thereof | |
| CN115449167A (en) | Processing technology of polyvinyl chloride mute drain pipe | |
| CN113736178A (en) | Corrosion-resistant MPP power cable protection pipe and production process thereof | |
| CN113043635A (en) | Acid-resistant and alkali-resistant composite pipeline | |
| CN109320867B (en) | Fiber-reinforced plastic pipe with winding structure wall 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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The invention relates to an impact resistant high-strength polyethylene communication pipe and a preparation method thereof Effective date of registration: 20220316 Granted publication date: 20210427 Pledgee: Fuyang sub branch of Bank of Hangzhou Co.,Ltd. Pledgor: ZHEJIANG BANGDE PIPE INDUSTRY Co.,Ltd. Registration number: Y2022330000342 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |