CN103044840A - Polypropylene resin composition and production process for large-caliber wall tube with hot-state winding structure - Google Patents
Polypropylene resin composition and production process for large-caliber wall tube with hot-state winding structure Download PDFInfo
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- CN103044840A CN103044840A CN2013100229340A CN201310022934A CN103044840A CN 103044840 A CN103044840 A CN 103044840A CN 2013100229340 A CN2013100229340 A CN 2013100229340A CN 201310022934 A CN201310022934 A CN 201310022934A CN 103044840 A CN103044840 A CN 103044840A
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Abstract
The invention discloses a polypropylene resin composition. The polypropylene resin composition comprises the following components in parts by weight: 75 to 85 parts of block polymerization polypropylene, 15 to 25 parts of reinforced modified master batch, 1 to 2 parts of a processing modifier, 3 to 8 parts of an anti-impaction modified material, and 0 to 2 parts of color concentrate. The invention also discloses a production process for a large-caliber wall tube with a hot-state winding structure. The production process comprises the following steps of: (1) blending and mixing the materials; (2) drying and preheating: drying and preheating the polypropylene resin composition by using hot blast; (3) performing plasticization and extrusion and molding by winding: plasticizing and extruding the polypropylene resin composition which is obtained in step (2), and performing hot-state winding on the extruded molten-state plastic to form a tubular product; (4) molding by cooling; (5) leveling by cutting; and (6) demolding: demolding the tubular product from a hot-state winding forming mold. The large-caliber hot-state winding structure wall tube produced from the polypropylene resin composition has high mechanical property, chemical corrosion resistance, high temperature resistance and long service life.
Description
Technical field
The present invention relates to a kind of plastics composite, concrete for a kind of polypropylene resin composite of high strength modification and adopt this polypropylene resin composite to make the production technique of the hot winding structure pipe of heavy caliber.
Background technology
For the requirement to environment, the energy and sanitation performance etc., replace traditional piping material to become common recognition with plastic pipe, shown by the pipeline practice of developed country: polyolefin pipe will be occupied an leading position from now on gradually, especially in heavy caliber solid wall pipe and structured wall popes system.In traditional plastic drain pipe, the plastics of making tubing mainly are included as polyvinyl chloride and polyethylene.But during the chemical industry draining blowdown pipelines under being used for High Temperature High Pressure, high density polyethylene(HDPE) (HDPE) material still has its technical limitation, so polypropylene is preferred material.
Be material of main part with high density polyethylene(HDPE) at present, adopt the technology mode production structure wall tube material of hot winding, its pipe diameter can be accomplished 300-4000 mm, but its ring stiffness of structured wall popes that this technological forming mode is produced is not high, for example during pipe diameter 〉=1800 mm, be difficult to accomplish that ring stiffness surpasses SN8 and the starting material that consume are a lot, its manufacturing cost is very high.At present, domestic also have a small amount of blowdown drainage pipeline to adopt polypropylene as material of main part, such as polypropylene double-wall corrugated pipe, but because the restriction of production unit, the maximum diameter of tubing can only be accomplished 1800mm.The high density polyethylene(HDPE) of in recent years penstock field application is progressively progressive, does not have obvious advantage but novel PE80 and PE100 are used for epipodium stiffness pipe.
In view of this, the present invention is intended to explore a kind of polypropylene resin composite of high strength modification and adopts this polypropylene resin composite to produce the production technique of the hot winding structure pipe of heavy caliber, the plastics that adopt this polypropylene resin composite to make have advantages of resistance to chemical attack, high temperature resistant and long service life, therefore adopt this polypropylene resin composite to produce the hot winding structure pipe of heavy caliber that obtains and have the mechanical property of high ring rigidity, and can save material.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of polypropylene resin composite of high strength modification and adopt this polypropylene resin composite to produce the production technique of the hot winding structure pipe of heavy caliber, the plastics that adopt this polypropylene resin composite to make have advantages of resistance to chemical attack, high temperature resistant and long service life, therefore adopt this polypropylene resin composite to produce the hot winding structure pipe of heavy caliber that obtains and have the mechanical property of high ring rigidity, and can save material.
Realize above-mentioned technical purpose, the present invention has at first proposed a kind of polypropylene resin composite, comprises following weight ratio ingredient:
Block copolymerization polypropylene: 75-85 part;
Enhancing modified masterbatch: 15-25 part;
Modifier: 1-2 part;
Impact-resistant modified material: 3-8 part;
Colour batch: 0-2 part.
Further, the Young's modulus of described block copolymerization polypropylene is greater than 1700MPa, and melting index is 0.1-0.3g/10min.
Further, described enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of described enhancing modified masterbatch is the 1250-3000 order.
Further, described modifier is the polyacrylate(s) macromolecular material.
Further, the described impact-resistant modified material ethylene-propylene rubber(EPR) (EPR) that is.
Further, described colour batch is the mixture of block copolymerization polypropylene and carbon black.
The invention allows for the as mentioned above production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of a kind of employing, comprise the steps:
1) batching, mix: each component of described polypropylene resin composite proportionally prepared burden and mix;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating;
3) plasticizing is extruded and Wrapping formed: with step 2) polypropylene resin composite that obtains plastifies and extrudes and the molten state plastics of extruding are carried out the hot Wrapping formed tubing that is;
4) cooling forming;
5) cutting is smooth;
6) demoulding: with tubing demoulding from the hot Wrapping formed mould.
Further, the described the 1st) after step is finished, with batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the described the 3rd) step begins to take out in front 1-1.5 hour drying and preheating.
Further, the described the 2nd) temperature of drying and preheating is 80 ℃-90 ℃ in the step; The described the 3rd) temperature that plasticizing is extruded in the step is 210 ℃-250 ℃, and hot Wrapping formed temperature is 150 ℃-200 ℃; The described the 4th) temperature of cooling forming in the step≤50 ℃.
Further, also comprise step 7): on the bellmouth inwall of described tubing or the socket outer wall coil nichrome wire.
Beneficial effect of the present invention is:
Polypropylene resin composite of the present invention adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The hot winding structure pipe of heavy caliber of the present invention production technique, the plastic production tubing that utilizes the polypropylene resin composite of high strength modification to make, can make tubing have very high modulus in tension and yield tensile strength, and can resist chemical corrosion and high-temp liquid, have high snappiness and good shock resistance, so that tubing has the predicted life of using 100 years, longer service life under 40 ℃ of conditions;
In addition, this processing method adopts above-mentioned polypropylene resin composite to make tubing, have more high strength and saving material compared to existing polyethylene spirally enwound structure-wall tubular product, for example: when pipe diameter 〉=2000 mm, the starting material that adopt the ring stiffness of the tubing that this processing method makes to surpass SN8 and consume are fewer, at least economical with materials is more than 25%, when for example the tubing model is DN/ID2000SN8, adopt existing HDPE material, tubing rice weighs 410 kilograms, and when adopting polyacrylic resin material, tubing rice weighs 305.5 kilograms; When the tubing model is DN/ID2500SN4, adopt existing HDPE material, tubing rice weighs 417 kilograms, and when adopting polyacrylic resin material, tubing rice weighs 271.5 kilograms, and its manufacturing cost has superiority very much, can produce to obtain the more excellent tubing of over-all properties.
Embodiment
The below is to polypropylene resin composite of the present invention and adopt the embodiment of the production technique of the hot winding structure pipe of this polypropylene resin composite production heavy caliber to be elaborated.
Polypropylene resin composite of the present invention comprises following weight ratio ingredient:
Block copolymerization polypropylene: 75-85 part;
Enhancing modified masterbatch: 15-25 part;
Modifier: 1-2 part;
Impact-resistant modified material: 3-8 part;
Colour batch: 0-2 part.
Wherein, the Young's modulus of block copolymerization polypropylene is greater than 1700MPa, and melting index is 0.1-0.3g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is the 1250-3000 order; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
Polypropylene resin composite of the present invention adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The present invention adopts the as mentioned above production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber, comprises the steps:
1) batching, mix: each component of polypropylene resin composite proportionally prepared burden and mix;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 80 ℃-90 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) polypropylene resin composite that obtains plastifies and extrudes and the molten state plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 210 ℃-250 ℃, and hot Wrapping formed temperature is 150 ℃-200 ℃;
4) cooling forming, with plastic cool to temperature≤50 ℃;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould.
Further, the described the 1st) after step is finished, with batching mix acrylic resin after finishing deposit to the transition feed bin for subsequent use, and the described the 3rd) step begins to take out in front 1-1.5 hour drying and preheating.
Further, the hot winding structure pipe of heavy caliber of the present invention production technique also comprises step 7): on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire.
The hot winding structure pipe of heavy caliber of the present invention production technique, utilize acrylic resin to make pipe fitting, can make pipe fitting have very high modulus in tension and yield tensile strength, and can resist chemical corrosion and high-temp liquid, have high snappiness and good shock resistance, so that pipe fitting has the predicted life of using 100 years, longer service life under 40 ℃ of conditions;
In addition, this processing method adopts above-mentioned polypropylene resin composite to make pipe fitting, has more high strength compared to existing polyethylene spirally enwound structure-wall pipe, and when pipe diameter 〉=2000 mm, adopt the ring stiffness of the pipe fitting that this processing method makes to surpass SN8 and the starting material that consume fewer, save at least more than 25%: when for example the pipe fitting model is DN/ID2000SN8, adopt existing HDPE material, tubing weighs 410 kilograms, and during the material polyacrylic resin material, tubing weighs 305.5 kilograms; When the pipe fitting model is DN/ID2500SN4, adopt existing HDPE material, tubing rice weighs 417 kilograms, and during the material polyacrylic resin material, tubing weighs 271.5 kilograms; Its manufacturing cost has superiority very much, can produce to obtain the more excellent tubing of over-all properties.
Embodiment 1
The polypropylene resin composite of the present embodiment comprises following weight ratio ingredient:
Block copolymerization polypropylene: 75 parts;
Enhancing modified masterbatch: 25 parts;
Modifier: 1 part;
Impact-resistant modified material: 3 parts;
Colour batch: 1 part.
Wherein, the Young's modulus of block copolymerization polypropylene is 1700MPa, and melting index is 0.1g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is 3000 orders; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
The polypropylene resin composite of the present embodiment adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The processing step of the production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of employing the present embodiment is as follows:
1) batching, mix: with each component of polypropylene resin composite according to the aforementioned proportion batching and mix; With batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the 3rd) the step plasticizing is extruded and drying and preheating was taken out in Wrapping formed beginning in front 1 hour;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 80 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) acrylic resin that obtains plastifies and extrudes and the plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 230 ℃, and hot Wrapping formed temperature is 200 ℃;
4) cooling forming, with plastic cool to temperature 50 C;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould;
7) on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire, can make things convenient for the hot melt between the pipe fitting to connect.
The hot winding structure pipe of the heavy caliber production technique of employing the present embodiment is produced the hot winding structure pipe of heavy caliber that obtains and is had ring stiffness=12.8 kN/ ㎡, and greater than standard ring stiffness 8kN/ ㎡, intensity is higher; Ring flexibility test (test round and smooth, as without reverse bending, to compress 30% crack-free of sample external diameter) is qualified; Falling weight impact test TIR=0 meets the standard of TIR≤10%; In the baking oven test, without layering, without cracking with without bubble, the Pass Test requirement.
Embodiment 2
The polypropylene resin composite of the present embodiment comprises following weight ratio ingredient:
Block copolymerization polypropylene: 78 parts;
Enhancing modified masterbatch: 22 parts;
Modifier: 1.8 parts;
Impact-resistant modified material: 5 parts;
Colour batch: 1.5 parts.
Wherein, the Young's modulus of block copolymerization polypropylene is 1700MPa, and melting index is 0.1g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is 1250 orders; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
The polypropylene resin composite of the present embodiment adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The processing step of the production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of employing the present embodiment is as follows:
1) batching, mix: with each component of polypropylene resin composite according to the aforementioned proportion batching and mix; With batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the 3rd) the step plasticizing is extruded and drying and preheating was taken out in Wrapping formed beginning in front 1.5 hours;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 90 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) acrylic resin that obtains plastifies and extrudes and the plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 210 ℃, and hot Wrapping formed temperature is 180 ℃;
4) cooling forming, with plastic cool to 30 ℃ of temperature;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould;
7) on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire, can make things convenient for the hot melt between the pipe fitting to connect.
The hot winding structure pipe of the heavy caliber production technique of employing the present embodiment is produced the hot winding structure pipe of heavy caliber that obtains and is had ring stiffness=11.3 kN/ ㎡, and greater than standard ring stiffness 8kN/ ㎡, intensity is higher; Ring flexibility test (test round and smooth, as without reverse bending, to compress 30% crack-free of sample external diameter) is qualified; Falling weight impact test TIR=0 meets the standard of TIR≤10%; In the baking oven test, without layering, without cracking with without bubble, the Pass Test requirement.
Embodiment 3
The polypropylene resin composite of the present embodiment comprises following weight ratio ingredient:
Block copolymerization polypropylene: 80 parts;
Enhancing modified masterbatch: 20 parts;
Modifier: 1.5 parts;
Impact-resistant modified material: 3 parts;
Colour batch: 1.5 parts.
Wherein, the Young's modulus of block copolymerization polypropylene is 1700MPa, and melting index is 0.1g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is 2000 orders; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
The polypropylene resin composite of the present embodiment adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The processing step of the production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of employing the present embodiment is as follows:
1) batching, mix: with each component of polypropylene resin composite according to the aforementioned proportion batching and mix; With batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the 3rd) the step plasticizing is extruded and drying and preheating was taken out in Wrapping formed beginning in front 1.2 hours;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 85 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) acrylic resin that obtains plastifies and extrudes and the plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 250 ℃, and hot Wrapping formed temperature is 150 ℃;
4) cooling forming, with plastic cool to 40 ℃ of temperature;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould;
7) on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire, can make things convenient for the hot melt between the pipe fitting to connect.
The hot winding structure pipe of the heavy caliber production technique of employing the present embodiment is produced the hot winding structure pipe of heavy caliber that obtains and is had ring stiffness=10.1 kN/ ㎡, and greater than standard ring stiffness 8kN/ ㎡, intensity is higher; Ring flexibility test (test round and smooth, as without reverse bending, to compress 30% crack-free of sample external diameter) is qualified; Falling weight impact test TIR=0 meets the standard of TIR≤10%; In the baking oven test, without layering, without cracking with without bubble, the Pass Test requirement.
Embodiment 4
The polypropylene resin composite of the present embodiment comprises following weight ratio ingredient:
Block copolymerization polypropylene: 85 parts;
Enhancing modified masterbatch: 15 parts;
Modifier: 2 parts;
Impact-resistant modified material: 8 parts;
Colour batch: 2 parts.
Wherein, the Young's modulus of block copolymerization polypropylene is 1700MPa, and melting index is 0.1g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is 1500 orders; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
The polypropylene resin composite of the present embodiment adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The processing step of the production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of employing the present embodiment is as follows:
1) batching, mix: with each component of polypropylene resin composite according to the aforementioned proportion batching and mix; With batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the 3rd) the step plasticizing is extruded and drying and preheating was taken out in Wrapping formed beginning in front 1.4 hours;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 88 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) acrylic resin that obtains plastifies and extrudes and the plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 240 ℃, and hot Wrapping formed temperature is 160 ℃;
4) cooling forming, with plastic cool to 20 ℃ of temperature;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould;
7) on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire, can make things convenient for the hot melt between the pipe fitting to connect.
The hot winding structure pipe of the heavy caliber production technique of employing the present embodiment is produced the hot winding structure pipe of heavy caliber that obtains and is had ring stiffness=8.7kN/ ㎡, and greater than standard ring stiffness 8kN/ ㎡, intensity is higher; Ring flexibility test (test round and smooth, as without reverse bending, to compress 30% crack-free of sample external diameter) is qualified; Falling weight impact test TIR=0 meets the standard of TIR≤10%; In the baking oven test, without layering, without cracking with without bubble, the Pass Test requirement.
Embodiment 5
The polypropylene resin composite of the present embodiment comprises following weight ratio ingredient:
Block copolymerization polypropylene: 82 parts;
Enhancing modified masterbatch: 18 parts;
Modifier: 1.2 parts;
Impact-resistant modified material: 6 parts;
Colour batch: 0 part.
Wherein, the Young's modulus of block copolymerization polypropylene is 1700MPa, and melting index is 0.1g/10min; The enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of enhancing modified masterbatch is 2500 orders; Modifier is the polyacrylate(s) macromolecular material; Impact-resistant modified material is the ethylene-propylene rubber(EPR) (EPR) of favorable dispersity; Colour batch is the mixture of block copolymerization polypropylene and carbon black.
The polypropylene resin composite of the present embodiment adopts block copolymerization polypropylene as material of main part, by adding masterbatch and the various auxiliary agent of enhancing modified, can effectively put forward the mechanical property of the plastics that this high polypropylene resin composite makes, and the plastics that this polypropylene resin composite is made also have good resistance to chemical corrosion, can welding as existing vinyon, and have the snappiness of height and good impact resistance.
The processing step of the production technique of the hot winding structure pipe of polypropylene resin composite production heavy caliber of employing the present embodiment is as follows:
1) batching, mix: with each component of polypropylene resin composite according to the aforementioned proportion batching and mix; With batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the 3rd) the step plasticizing is extruded and drying and preheating was taken out in Wrapping formed beginning in front 1.4 hours;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating, and the temperature of drying and preheating is 86 ℃;
3) plasticizing is extruded and Wrapping formed: with step 2) acrylic resin that obtains plastifies and extrudes and the plastics of extruding are carried out the hot Wrapping formed pipe fitting that is, and the temperature that plasticizing is extruded is 220 ℃, and hot Wrapping formed temperature is 190 ℃;
4) cooling forming, with plastic cool to 10 ℃ of temperature;
5) cutting is smooth;
6) demoulding: with pipe fitting demoulding from the hot Wrapping formed mould;
7) on the bellmouth inwall of described pipe fitting or the socket outer wall coil nichrome wire, can make things convenient for the hot melt between the pipe fitting to connect.
The hot winding structure pipe of the heavy caliber production technique of employing the present embodiment is produced the hot winding structure pipe of heavy caliber that obtains and is had ring stiffness=9.6 kN/ ㎡, and greater than standard ring stiffness 8kN/ ㎡, intensity is higher; Ring flexibility test (test round and smooth, as without reverse bending, to compress 30% crack-free of sample external diameter) is qualified; Falling weight impact test TIR=0 meets the standard of TIR≤10%; In the baking oven test, without layering, without cracking with without bubble, the Pass Test requirement.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. polypropylene resin composite is characterized in that: comprise following weight ratio ingredient:
Block copolymerization polypropylene: 75-85 part;
Enhancing modified masterbatch: 15-25 part;
Modifier: 1-2 part;
Impact-resistant modified material: 3-8 part;
Colour batch: 0-2 part.
2. polypropylene resin composite according to claim 1 is characterized in that: the Young's modulus of described block copolymerization polypropylene is for greater than 1700MPa, and melting index is 0.1-0.3g/10min.
3. polypropylene resin composite according to claim 1, it is characterized in that: described enhancing modified masterbatch is comprised of PP resin, inorganic mineral, dispersing auxiliary and coupling agent, and the granularity of described enhancing modified masterbatch is the 1250-3000 order.
4. polypropylene resin composite according to claim 1, it is characterized in that: described modifier is the polyacrylate(s) macromolecular material.
5. polypropylene resin composite according to claim 1 is characterized in that: the ethylene-propylene rubber(EPR) (EPR) that described impact-resistant modified material is.
6. polypropylene resin composite according to claim 1, it is characterized in that: described colour batch is the mixture of block copolymerization polypropylene and carbon black.
7. an employing is characterized in that: comprise the steps: such as the claim 1-6 production technique that polypropylene resin composite is produced the hot winding structure pipe of heavy caliber as described in each
1) batching, mix: each component of described polypropylene resin composite proportionally prepared burden and mix;
2) drying and preheating: utilize hot blast that the polypropylene resin composite that step 1) obtains is carried out drying and preheating;
3) plasticizing is extruded and Wrapping formed: with step 2) polypropylene resin composite that obtains plastifies and extrudes and the molten state plastics of extruding are carried out the hot Wrapping formed tubing that is;
4) cooling forming;
5) cutting is smooth;
6) demoulding: with tubing demoulding from the hot Wrapping formed mould.
8. the hot winding structure pipe of heavy caliber according to claim 1 production technique, it is characterized in that: after the described the 1st) step is finished, with batching mix polypropylene resin composite after finishing deposit to the transition feed bin for subsequent use, and the described the 3rd) step begins to take out in front 1-1.5 hour drying and preheating.
9. the hot winding structure pipe of heavy caliber according to claim 1 production technique, it is characterized in that: the described the 2nd) temperature of drying and preheating is 80 ℃-90 ℃ in the step; The described the 3rd) temperature that plasticizing is extruded in the step is 210 ℃-250 ℃, and hot Wrapping formed temperature is 150 ℃-200 ℃; The described the 4th) temperature of cooling forming in the step≤50 ℃.
10. the hot winding structure pipe of heavy caliber according to claim 1 production technique is characterized in that: also comprise step 7): on the bellmouth inwall of described tubing or the socket outer wall coil nichrome wire.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860267A (en) * | 2016-06-16 | 2016-08-17 | 泰州雅美雨和新材料有限公司 | PP corrugated pipe modified by ethylene propylene rubber (EPR) |
| CN106589585A (en) * | 2016-11-30 | 2017-04-26 | 重庆顾地塑胶电器有限公司 | High strength polypropylene (PP-HM) double-wall corrugated pipe and production technology |
| CN106633378A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Preparation method of large-diameter cross-linked polypropylene winding structure wall pipeline of underground pipe gallery |
| CN106903913A (en) * | 2017-03-16 | 2017-06-30 | 瑞金市金和塑业发展有限公司 | Hollow polypropylene wall strengthens the manufacture method of winding pipe |
| CN107839205A (en) * | 2017-09-26 | 2018-03-27 | 安徽省中阳管业有限公司 | A kind of polyethylene winding structure pipe manufacturing method |
| CN109749245A (en) * | 2019-01-28 | 2019-05-14 | 陈云 | A kind of heat-resistance polypropylene feed pipe material and preparation method thereof |
| CN111057284A (en) * | 2019-06-04 | 2020-04-24 | 安徽富通塑业科技有限公司 | Reinforced HDPE double-wall corrugated pipe and preparation method thereof |
| CN113258512A (en) * | 2021-06-08 | 2021-08-13 | 哈尔滨市三棵树铁路客车配件有限公司 | Special spiral protective sleeve for high-voltage cable of motor train unit |
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| CN101885892A (en) * | 2010-07-20 | 2010-11-17 | 上海公元建材发展有限公司 | Composition, large-caliber double-wall corrugated pipe produced by employing same and production process |
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| CN2457423Y (en) * | 2001-02-15 | 2001-10-31 | 张永东 | Pipe wall screw winding formed plastic tube |
| CN101885892A (en) * | 2010-07-20 | 2010-11-17 | 上海公元建材发展有限公司 | Composition, large-caliber double-wall corrugated pipe produced by employing same and production process |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860267A (en) * | 2016-06-16 | 2016-08-17 | 泰州雅美雨和新材料有限公司 | PP corrugated pipe modified by ethylene propylene rubber (EPR) |
| CN106633378A (en) * | 2016-10-12 | 2017-05-10 | 重庆金山洋生管道有限公司 | Preparation method of large-diameter cross-linked polypropylene winding structure wall pipeline of underground pipe gallery |
| CN106589585A (en) * | 2016-11-30 | 2017-04-26 | 重庆顾地塑胶电器有限公司 | High strength polypropylene (PP-HM) double-wall corrugated pipe and production technology |
| CN106903913A (en) * | 2017-03-16 | 2017-06-30 | 瑞金市金和塑业发展有限公司 | Hollow polypropylene wall strengthens the manufacture method of winding pipe |
| CN107839205A (en) * | 2017-09-26 | 2018-03-27 | 安徽省中阳管业有限公司 | A kind of polyethylene winding structure pipe manufacturing method |
| CN109749245A (en) * | 2019-01-28 | 2019-05-14 | 陈云 | A kind of heat-resistance polypropylene feed pipe material and preparation method thereof |
| CN111057284A (en) * | 2019-06-04 | 2020-04-24 | 安徽富通塑业科技有限公司 | Reinforced HDPE double-wall corrugated pipe and preparation method thereof |
| CN113258512A (en) * | 2021-06-08 | 2021-08-13 | 哈尔滨市三棵树铁路客车配件有限公司 | Special spiral protective sleeve for high-voltage cable of motor train unit |
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Application publication date: 20130417 |