CN115464938A - Organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe and preparation method thereof - Google Patents

Organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe and preparation method thereof Download PDF

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CN115464938A
CN115464938A CN202210972229.6A CN202210972229A CN115464938A CN 115464938 A CN115464938 A CN 115464938A CN 202210972229 A CN202210972229 A CN 202210972229A CN 115464938 A CN115464938 A CN 115464938A
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toughening
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pipe
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戴天文
何英
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Anhui Yuanli Hi Tech Materials Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention relates to the field of polymer composite materials, in particular to an organic toughening and reinforcing block copolymerization polypropylene anti-stripping pipe and a preparation method thereof. The composite material is formed by compounding an inner layer and an outer layer through hot melting, wherein the inner layer and the outer layer are both made of organic toughening and reinforcing polypropylene composite materials; the organic toughened and reinforced polypropylene composite material comprises the following raw materials in parts by weight: 50-70 parts of PPB,9-18 parts of PA6,2-4 parts of ABS,6-9 parts of toughening agent, 3-6 parts of compatibilizer, 0.3-0.5 part of beta nucleating agent, 0.2-0.4 part of molten fat regulator, 8-15 parts of nano activated talcum powder, 0.5-1 part of light diffusant, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010,0.3-0.6 part of antioxidant 168,0.2-0.4 part of calcium stearate and 0.2-0.4 part of zinc stearate. The invention effectively improves the ring rigidity, the ring flexibility and the shock resistance.

Description

Organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe and preparation method thereof
Technical Field
The invention relates to the field of polymer composite materials, in particular to an organic toughening and reinforcing block copolymer polypropylene anti-stripping pipe and a preparation method thereof.
Background
At present, most plastic sewage pipeline products show that the ring rigidity is not high, the impact resistance is poor, the inner wall and the outer wall of the pipe are rough, the brittleness at low temperature is obvious in winter, the pipe is soft in summer, the flaring head of the product is seriously damaged, and the pipe is broken and blocked by water flow after the pipe is buried, so that urban inland inundation is caused; and the tubular product construction degree of difficulty is high, and the connection between the pipeline leaks water, often causes huge construction waste, and the flaring department intensity is not enough in tubular product connection, easy damage. Among the numerous plastic buried drain pipes, the double-wall corrugated pipe is designed in its unique structure, which saves more raw materials than other plastic pipes.
Polypropylene (PP) is a general synthetic resin, and is widely used in the fields of appliance manufacturing, automobile industry, molds, household appliances, and the like because of its excellent comprehensive properties of chemical corrosion resistance, heat resistance, non-toxicity, easy processing, and the like. However, polypropylene also has some drawbacks, such as: poor toughness, low-temperature brittleness, non-aging resistance, low impact strength, large shrinkage rate and the like, and limits the application of the material as engineering stress material and the like. Therefore, the PP is subjected to modification treatment such as aging resistance, toughening and reinforcement, and the application range of the PP can be widened. PA6 is a polar polymer, has high strength, good elasticity and good wear resistance and chemical corrosion resistance, and the blending of PP and PA6 not only maintains the advantages of PP and PA6, but also improves the defects of the PP and PA6, can improve the performances such as impact resistance, heat resistance, wear resistance, corrosion resistance, size and shape stability, processability and the like, and is considered to be an ideal high-performance plastic capable of replacing steel and widely applied to various fields. Therefore, the PA6 and PP blending modified material is selected to prepare the composite material, and the aim of improving the mechanical property of the polypropylene double-wall corrugated pipe is expected to be achieved.
Disclosure of Invention
The invention aims to provide an organic toughening and reinforcing block copolymerization polypropylene anti-stripping pipe material capable of effectively improving ring stiffness, ring flexibility, impact resistance and high and low temperature performance and a preparation method thereof aiming at the problems in the background technology.
On one hand, the invention provides an organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe which is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer has a wave-shaped structure and is made of an organic toughening and reinforcing polypropylene composite material;
the organic toughened and reinforced polypropylene composite material comprises the following raw materials in parts by weight: 50-70 parts of PPB,9-18 parts of PA6,2-4 parts of ABS,6-9 parts of toughening agent, 3-6 parts of compatibilizer, 0.3-0.5 part of beta nucleating agent, 0.2-0.4 part of molten fat regulator, 8-15 parts of nano activated talcum powder, 0.5-1 part of light diffusant, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010,0.3-0.6 part of antioxidant 168,0.2-0.4 part of calcium stearate and 0.2-0.4 part of zinc stearate.
Preferably, PPB adopts polypropylene K8003, ABS adopts sand ratio B221 dry material powder, toughening agent adopts Vitamei 6202, compatibilizer adopts PP-G-MAH (maleic anhydride grafted polypropylene), and nano-grade activated talcum powder adopts more than 2500 meshes.
On the other hand, the invention provides a preparation method of the organic toughening and reinforcing block copolymerization polypropylene anti-stripping pipe, which comprises the following steps:
s1, preparing the following raw materials in parts by weight: 50-70 parts of PPB,9-18 parts of PA6,2-4 parts of ABS,6-9 parts of toughening agent, 3-6 parts of compatibilizer, 0.3-0.5 part of beta nucleating agent, 0.2-0.4 part of molten fat regulator, 8-15 parts of nano activated talcum powder, 0.5-1 part of light diffusing agent, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010,0.3-0.6 part of antioxidant 168,0.2-0.4 part of calcium stearate and 0.2-0.4 part of zinc stearate;
s2, mixing, modifying and pre-plasticizing the prepared raw materials by using a high-speed mixing unit, melting, plasticizing, mixing, extruding and granulating by using a double-stage extruder unit, and finally cooling and granulating to obtain the organic toughening and reinforcing polypropylene composite material;
s3, respectively adding the organic toughening and reinforcing polypropylene composite material adopted by the inner layer and the outer layer into two extruders for extrusion, heating, melting, plasticizing and conveying the material to a die of a machine head through a single screw of the extruders, vacuumizing and cooling and sizing the inner layer of the pipe through an inner sizing sleeve, forming the outer layer of the pipe in close contact with a module under the combined action of internal air pressure and external vacuum suction, uniformly fusing the inner layer and the outer layer of the pipe together, and extruding the temperature of each section by the inner layer: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃ and the temperature of each section of outer layer extrusion: 200 ℃,210 ℃,230 ℃,230 ℃ and 230 ℃.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention adopts PP and PA6 to blend, uses maleic anhydride grafted PP as compatilizer, uses nano inorganic particles to reinforce and toughen to form a multi-element composite material, and uses the composite material to prepare the organic toughened and reinforced block copolymerization polypropylene anti-release pipe material, and the ring stiffness, the ring flexibility, the impact resistance, the high and low temperature performance and the like of the prepared organic toughened and reinforced block copolymerization polypropylene anti-release pipe material are obviously improved, thereby meeting the special environmental performance requirements of the buried sewage pipe.
Detailed Description
Example one
The organic toughening and reinforcing block copolymer polypropylene anti-falling pipe material provided by the embodiment is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer has a wavy structure and is made of an organic toughening and reinforcing polypropylene composite material;
the organic toughened and reinforced polypropylene composite material comprises the following raw materials in parts by weight: 50 parts of PPB,18 parts of PA6,2 parts of ABS,9 parts of toughening agent, 6 parts of compatibilizer, 0.3 beta nucleating agent, 0.4 part of molten fat regulator, 15 parts of nano-scale activated talcum powder, 1 part of light diffuser, 0.6 part of light stabilizer, 0.6 part of antioxidant 1010, 0.6 part of antioxidant 168,0.4 part of calcium stearate and 0.4 part of zinc stearate.
PPB adopts polypropylene K8003, ABS adopts sand ratio B221 dry powder, toughening agent adopts Vitamei 6202, compatibilizer adopts PP-G-MAH (maleic anhydride grafted polypropylene), and nano-grade activated talcum powder adopts more than 2500 meshes. The Dadamei 6202 is used as a system toughening agent, and the PP-G-MAH is used as a system compatibilizer, so that the compatibility of the system is improved, and the rigidity, toughness and low-temperature resistance of a system material are enhanced. The organic rigid material PA6, ABS and nano inorganic rigid particle talcum powder are used for enhancing rigidity and toughness, and the rigidity and toughness of the system material are enhanced.
Adding the prepared raw materials into a high-speed mixing unit for mixing, modifying and pre-plasticizing for 10-15 minutes, adding the raw materials into a double-stage extrusion unit for melting, plasticizing, mixing, extruding and granulating, and finally cooling and granulating to obtain the special material for the organic toughening and reinforcing block copolymerization polypropylene anti-stripping pipe, wherein the barrel temperature is respectively as follows: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃ and neck mold temperature of: 230 ℃ of oxygen.
When preparing the organic toughening reinforcing block copolymerization polypropylene anti-drop pipe: add the inlayer material and outer material respectively in two extruders and extrude, the material is carried to the aircraft nose bush through extruder single screw rod heating melting plastify, and the tubular product inlayer is through interior sizing sleeve evacuation recooling design, and the tubular product skin is in the same place with module in close contact with shaping under the combined action of inside air pressure and outside vacuum suction, the inside and outside layer of tubular product fuses together evenly, and each section temperature is extruded to the inlayer: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃ and the temperature of each section of outer layer extrusion: 200 ℃,210 ℃,230 ℃,230 ℃ and 230 ℃.
TABLE 1 physical and mechanical properties of the organic toughened and reinforced block copolymer polypropylene peel-off prevention pipe prepared in example one
Figure BDA0003796803050000041
Example two
The organic toughening and reinforcing block copolymer polypropylene anti-falling pipe material provided by the embodiment is formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer has a wavy structure and is made of an organic toughening and reinforcing polypropylene composite material;
the organic toughened and reinforced polypropylene composite material comprises the following raw materials in parts by weight: 70 parts of PPB,9 parts of PA6,4 parts of ABS,6 parts of toughening agent, 3 parts of compatibilizer, 0.5 beta nucleating agent, 0.2 part of molten fat regulator, 8 parts of nano-scale activated talcum powder, 0.5 part of light diffusant, 0.3 part of light stabilizer, 0.3 part of antioxidant 1010,0.3 part of antioxidant 168,0.2 part of calcium stearate and 0.2 part of zinc stearate.
PPB adopts polypropylene K8003, ABS adopts sand ratio B221 dry powder, toughening agent adopts Vitamei 6202, compatibilizer adopts PP-G-MAH (maleic anhydride grafted polypropylene), and nano-grade activated talcum powder adopts more than 2500 meshes. The Dadamei 6202 is used as a system toughening agent, and the PP-G-MAH is used as a system compatibilizer, so that the compatibility of the system is improved, and the rigidity, toughness and low-temperature resistance of a system material are enhanced. The organic rigid material PA6, ABS and nano inorganic rigid particle talcum powder are used for enhancing rigidity and toughness, and the rigidity and toughness of the system material are enhanced.
Adding the prepared raw materials into a high-speed mixing unit for mixing, modifying and pre-plasticizing for 10-15 minutes, adding the raw materials into a double-stage extrusion unit for melting, plasticizing, mixing, extruding and granulating, and finally cooling and granulating to obtain the special material for the organic toughening and reinforcing block copolymerization polypropylene anti-stripping pipe, wherein the barrel temperature is respectively as follows: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃ and neck mold temperature: 230 ℃ to 230 ℃.
When preparing the organic toughening reinforcing block copolymerization polypropylene anti-drop pipe: add the inlayer material and outer material respectively in two extruders and extrude, the material is carried to the aircraft nose bush through extruder single screw rod heating melting plastify, and the tubular product inlayer is through interior sizing sleeve evacuation recooling design, and the tubular product skin is in the same place with module in close contact with shaping under the combined action of inside air pressure and outside vacuum suction, the inside and outside layer of tubular product fuses together evenly, and each section temperature is extruded to the inlayer: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃ and the temperature of each section of outer layer extrusion: 200 ℃,210 ℃,230 ℃,230 ℃ and 230 ℃.
Table 2 shows the physical and mechanical properties of the organic toughened and reinforced block copolymer polypropylene anti-release pipe prepared in example II
Figure BDA0003796803050000061
The invention adopts PP and PA6 to blend, uses maleic anhydride grafted PP as compatilizer, uses nano inorganic particles to reinforce and toughen to form a multi-element composite material, and uses the composite material to prepare the organic toughened and reinforced block copolymerization polypropylene anti-release pipe material, and the ring stiffness, the ring flexibility, the impact resistance, the high and low temperature performance and the like of the prepared organic toughened and reinforced block copolymerization polypropylene anti-release pipe material are obviously improved, thereby meeting the special environmental performance requirements of the buried sewage pipe.
While the embodiments of the present invention have been described in detail, the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims (3)

1. An organic toughening and reinforcing block copolymer polypropylene anti-drop pipe is characterized by being formed by compounding an inner layer and an outer layer through hot melting, wherein the outer layer has a wavy structure and is made of an organic toughening and reinforcing polypropylene composite material;
the organic toughened and reinforced polypropylene composite material comprises the following raw materials in parts by weight: 50-70 parts of PPB,9-18 parts of PA6,2-4 parts of ABS,6-9 parts of toughening agent, 3-6 parts of compatibilizer, 0.3-0.5 part of beta nucleating agent, 0.2-0.4 part of molten fat regulator, 8-15 parts of nano activated talcum powder, 0.5-1 part of light diffusant, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010,0.3-0.6 part of antioxidant 168,0.2-0.4 part of calcium stearate and 0.2-0.4 part of zinc stearate.
2. The organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe material according to claim 1, wherein PPB adopts polypropylene K8003, ABS adopts sand ratio B221 dry powder, toughening agent adopts Vitamei 6202, compatibilizer adopts PP-G-MAH, and nano-grade activated talcum powder adopts over 2500 meshes.
3. The preparation method of the organic toughened and reinforced block copolymer polypropylene anti-release pipe material as claimed in claim 1, which is characterized by comprising the following steps:
s1, preparing the following raw materials in parts by weight: 50-70 parts of PPB,9-18 parts of PA6,2-4 parts of ABS,6-9 parts of toughening agent, 3-6 parts of compatibilizer, 0.3-0.5 part of beta nucleating agent, 0.2-0.4 part of molten fat regulator, 8-15 parts of nano activated talcum powder, 0.5-1 part of light diffusant, 0.3-0.6 part of light stabilizer, 0.3-0.6 part of antioxidant 1010,0.3-0.6 part of antioxidant 168,0.2-0.4 part of calcium stearate and 0.2-0.4 part of zinc stearate;
s2, mixing, modifying and pre-plasticizing the prepared raw materials by using a high-speed mixing unit, then performing melting, plasticizing, mixing, extruding and granulating by using a double-stage extruder unit, and finally cooling and granulating to obtain the organic toughening and reinforcing polypropylene composite material;
s3, respectively adding the organic toughening and reinforcing polypropylene composite material adopted by the inner layer and the outer layer into two extruders for extrusion, heating, melting, plasticizing and conveying the material to a die of a machine head through a single screw of the extruders, vacuumizing and cooling and sizing the inner layer of the pipe through an inner sizing sleeve, forming the outer layer of the pipe in close contact with a module under the combined action of internal air pressure and external vacuum suction, uniformly fusing the inner layer and the outer layer of the pipe together, and extruding the temperature of each section by the inner layer: 200 ℃,210 ℃,230 ℃,230 ℃,230 ℃, and the temperature of each extrusion section of the outer layer: 200 ℃,210 ℃,230 ℃,230 ℃ and 230 ℃.
CN202210972229.6A 2022-08-15 2022-08-15 Organic toughening and reinforcing block copolymerization polypropylene anti-falling pipe and preparation method thereof Pending CN115464938A (en)

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CN108314839A (en) * 2018-01-31 2018-07-24 北京汽车股份有限公司 Glass fiber reinforced polypropylene composite material, motor intake manifold and automobile
CN113088029A (en) * 2021-04-08 2021-07-09 四川潽鑫科技集团有限公司 High-impact-resistance double-wall corrugated pipe and preparation method thereof
CN114605727A (en) * 2022-04-19 2022-06-10 安徽源锂高新材料有限公司 Regenerated polyethylene nano modified alloy MUHDPE (polyethylene) pipe
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096631A (en) * 1983-10-31 1985-05-30 Toyoda Gosei Co Ltd Polyamide-rubber blend composition
CN102966801A (en) * 2012-11-02 2013-03-13 宏岳塑胶集团有限公司 Method for preparing high-strength heat-resistant and cold-resistant modified polypropylene pipe
CN104479275A (en) * 2014-12-04 2015-04-01 重庆嘉良塑胶制品有限责任公司 PP/PA composite material for automobile interior and exterior and preparation method of PP/PA composite material
CN108314839A (en) * 2018-01-31 2018-07-24 北京汽车股份有限公司 Glass fiber reinforced polypropylene composite material, motor intake manifold and automobile
CN113088029A (en) * 2021-04-08 2021-07-09 四川潽鑫科技集团有限公司 High-impact-resistance double-wall corrugated pipe and preparation method thereof
CN114605727A (en) * 2022-04-19 2022-06-10 安徽源锂高新材料有限公司 Regenerated polyethylene nano modified alloy MUHDPE (polyethylene) pipe
CN114801342A (en) * 2022-04-19 2022-07-29 安徽国天成科技有限公司 Ultra-high molecular weight polyethylene reinforced modified polypropylene straight-wall pipe

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