CN101696752B - Production method of polyolefin PP/PVDC/polyolefin PE multilayer compounded tube - Google Patents

Production method of polyolefin PP/PVDC/polyolefin PE multilayer compounded tube Download PDF

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CN101696752B
CN101696752B CN2009100662843A CN200910066284A CN101696752B CN 101696752 B CN101696752 B CN 101696752B CN 2009100662843 A CN2009100662843 A CN 2009100662843A CN 200910066284 A CN200910066284 A CN 200910066284A CN 101696752 B CN101696752 B CN 101696752B
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polyolefin
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pvdc
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parts
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CN101696752A (en
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林云青
叶日才
张雯林
李长辉
强克刚
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HENAN KANGTAI PLASTIC TECHNOLOGY Co Ltd
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HENAN KANGTAI PLASTIC TECHNOLOGY Co Ltd
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Abstract

The invention relates to a polyolefin PP, PVDC and polyolefin PE multilayer compounded tube, effectively solving the problems that plastic tubes have the defects of toxity, low strength, weak toughness, weak impact resistance, high cost and complicated processing. The method comprises the following steps: respectively extruding a polyolefin PP outer layer, a PVDC intermediate layer and a polyolefin PE inner layer by an extruder and then heating, extruding a compounded tube by the same extruding port mould, wherein the compounded tube is formed by co-extruding a plurality of layers and has tightly combined adjacent layers and at least comprises the polyolefin PP outer layer the PVDC intermediate layer and the polyolefin PE inner layer, and sectionally heating the polyolefin PP outer layer and the polyolefin PE inner layer in a machine barrel zone and a die head zone of the extruder; sectionally heating the PVDC intermediate layer in the machine barrel zone and the die head zone; and carrying out vacuum sizing on the combined compounded tube, placing the sized compounded tube in water at 18-23 DEG C for secondary cooling, and printing, drawing and cutting the product in sizing to obtain the polyolefin PP, PVDC and polyolefin PE multilayer compounded tube. The polyolefin PP, PVDC and polyolefin PE multilayer compounded tube has no toxicity and side effects, high cost performance, simple processing, high strength, favorable toughness and strong impact resistance and is an innovation on the tubes.

Description

The production method of polyolefin PP, PVDC and polyolefin PE multilayer composite pipe
One, technical field
The present invention relates to tubing, the production method of particularly a kind of polyolefin PP, PVDC and polyolefin PE multilayer composite pipe.
Two, background technique
Pipeline is widely used in the conveying of various fluids, like each class I liquid I, gas etc.Domestic and international at present plastic tube as water supply usefulness; Its raw materials mainly adopt fluoropolymer resins such as PE, PP, PVC and ABS; But owing to manufacture cost, cost of material, the market demand; Especially each side factor such as large-caliber water supply tubing, the source is abundant, bigger, cheap PVC (mainly the being hard) resin of output is still the leading raw material on the market.Because the polyvinyl chloride resin self performance becomes in the manufacturing process of tubing in machine shaping, must add auxiliary agents such as corresponding stabilizer, modifier, processing aid.And contain heavy metal in the required stabilizer of present most of enterprise production pvc pipe material; The effect of heavy metal and polyvinyl chloride resin material in course of working along with time and temperature variation and separate out when VCM is arranged; Both factors make the PVC hard tube of being produced that certain toxicity arranged; Therefore NBS has been made concrete regulation to the content of heavy metal in the tubing and the content of separating out of VCM, is regarded as harmlessly, and its product just allows production.If its index does not reach the national Specification value, then be regarded as harmful human body, its product is defective, forbids producing.Along with economic development, the progress of society and the raising day by day of living standards of the people; People to aspects such as quality of life and safe and sanitary require increasingly high; Although the pvc pipe material can be used as supply pipe; But it contains microtoxicity is objective reality, and people get up to its microtoxicity problem also pay attention to day by day.Shock compatriots' Sanlu milk powder case let us is inspired deeply: everything relates to having not a particle of of personal safety is minor issue, the no minor matter of safety.Can go into overdrive aspect quality testing, safe and sanitary, the disease quarantine after the country, and progressively eliminate the potential risk product.PVC hides plumbous killer; Country is limited in the potable water tubing and uses; But PVC plastic water pipe, PVC door-window section bar material, PVC ceiling material just are used for modern architecture and house decoration more and more, however the health that this light and handy material attractive in appearance but possibly threaten you.Plumbous in the PVC plastics mainly from wherein heat stabilizer lead salt.The expert discovers that the channel that lead pollution gets into human body mainly contains two, the one, suck by respiratory tract through the air that pollutes; The 2nd, get into by mouth through food and drinking-water.Current research finds, the PVC plastic water supply pipe that contains lead salt in use, heavy metal lead can be separated out from pipeline, directly causes the pollution of potable water.If leaded plastics water supply pipe has been used in family, kindergarten or sub-district, can directly cause the potable water lead pollution.The a lot of countries in the world all prohibite and use the stabilizer that contains lead salt and CPE modifier etc.In addition, in big snow disaster in 2008 and terrorise's 512 violent earthquakes, national plastic pipe association statistical result showed, in whole pipe network system, damaging maximum is exactly the PVC-U pipe part.The earthquake region pipe network receives heavy damage (seismic intensity is especially greatly a main cause certainly); This factor that will will consider geology harm afterwards during the Development and Production new product as far as possible with regard to the pipeline industry is interior; Improve the resistance of tubing to geological disaster as far as possible, the tubing of performances such as exploitation high tenacity, high tenacity, high impact-resistant has become the new trend of pipeline industry development.Simultaneously in the rural safe drinking water engineering, especially fall behind, remote rural area because with a varied topography, execution conditions are abominable, situation such as knocking, bump, press, pound, fall, roll is inevitable, this has just more required the quality of tubing.As the heavy caliber pipe that potable water uses, replacing traditional metallic conduit with plastic tube is trend of the times, the demand of social development.Though but excellent combination properties such as some engineering plastics such as PA, PEEK, ABS can be used for making plastic tube, it costs an arm and a leg, processing conditions is had relatively high expectations, the level of incompatibility Economic Development, so improve and innovate imperative.
Three, summary of the invention
To above-mentioned situation, for overcoming the existing technology defective, the present invention's purpose just provides the production method of a kind of polyolefin PP, PVDC and polyolefin PE multilayer composite pipe, and it is toxic effectively to solve plastic tube; Intensity is low, a little less than the poor toughness, impact resistance, cost is high, the problem of processed complex, the technological scheme of its solution is; After polyolefin PP skin, PVDC mesosphere, polyolefin PE internal layer extruded heating by extruder respectively, it was outer to be extruded into rare polyolefin PP by same extrusion neck ring mold again, multi-layer co-extruded, the composite pipe (seeing shown in Figure 2) that adjacent layer combines closely of PVDC mesosphere and polyolefin PE internal layer; Wherein, the machine barrel section length of the extruder of polyolefin PP skin and polyolefin PE internal layer is divided into 4 sections, every section (or district; As follows) temperature is: 1 section is 170 ± 5 ℃, and 2 sections is 175 ± 5 ℃, and 3 sections is 185 ± 5 ℃; 4 sections is 185 ± 5 ℃, and the die head length in extruder die head (or head, as follows) district is divided into 7 sections; Every section temperature is: 1 section is 190 ± 10 ℃, and 2 sections is 185 ± 5 ℃, and 3 sections is 185 ± 5 ℃; 4 sections is 190 ± 5 ℃, and 5 sections is 200 ± 10 ℃, and 6 sections is 200 ± 10 ℃; 7 sections is 205 ± 10 ℃, and the extruder rotating speed is 40-120rad/min, and hauling speed is 350-900cm/min; The machine barrel section length of the extruder in PVDC mesosphere is divided into 4 sections, and every section temperature is: 1 section is 165 ± 5 ℃, and 2 sections is 175 ± 5 ℃; 3 sections is 185 ± 5 ℃, and 4 sections is 180 ± 5 ℃, and the die head length of extruder die Head Section is divided into 4 sections; Every section temperature is: 1 section is 195 ± 10 ℃, and 2 sections is 185 ± 5 ℃, and 3 sections is 180 ± 5 ℃; 4 sections is 165 ± 5 ℃, and the extruder rotating speed is 40-120rad/min, and hauling speed is 300-800cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.3~0.5: 1, and the outer field density of polyolefin PP is 0.895~0.91g/cm 3, the density of polyolefin PE internal layer is 0.93~0.956g/cm 3, the density in PVDC mesosphere is 1.8-1.96g/cm 3, in conjunction with after composite pipe in the vacuum of 0.015-0.04MPa, after water temperature is 20-25 ℃ of following sizing, place 18-23 ℃ water to carry out the secondary cooling again, product is printed, traction, the scale cutting tubing of the present invention, after Checking of finished products is qualified, packing, warehouse-in; Said polyolefin PP skin is mixed for 3~8 parts by by weight PP-R 90-110 part (PP-R can adopt Korea S star R200P dawn product), 1~4 part of colorant and plasticizer and is crushed to; Said PVDC mesosphere is mixed for 3~10 parts by by weight PVDC resin 90-100 part, 4~8 parts of stabilizers, 0.2~0.5 part of oiling agent and processing aid and is crushed to; Said polyolefin PE internal layer is mixed for 1~4 part and is crushed to by PE resin 90-100 part, colorant by weight; Said colorant is the color masterbatch of the grey or the white of Cabot board; Said plasticizer is the maleic anhydride graft phase solvent, any as in POE plasticizer, EVA plasticizer, SBS plasticizer, EPDM plasticizer, PE plasticizer, the ABS plasticizer; Said stabilizer is any in lead sulfate tribasic, zine stearate, the barium stearate; Said oiling agent is any in paraffin, PE wax, the OPE wax; Said processing aid is processing aid ACR201 (for the graft copolymer of methyl methacrylate and acrylic ester); Or processing aid ACR401 (being methyl methacrylate, ethyl acrylate, butyl acrylate and four kinds of monomer copolymerizations of vinyl benzene); Or processing aid AMS (oligomer of AMS); When said composite pipe was the multilayer more than 3 layers, except that internal layer, other was the two-layer compoiste adhering that upwards replaces and is crushed to together.The present invention has no side effect, and cost performance is good, and processing is simple, and intensity is high, and good toughness, impact resistance are strong, are the innovations on the tubing.
Four, description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is product structure sectional drawing of the present invention (three layers, wherein, the 1st, polyolefin PP is outer, the 2nd, PVDC mesosphere, the 3rd, polyolefin PE internal layer).
Five, embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
Embodiment 1: with 3 layers shown in Figure 2 be example, by shown in Figure 1,
The present invention in the specific implementation, polyolefin PP skin, PVDC mesosphere, polyolefin PE internal layer extruded heating by extruder respectively after, extrude by polyolefin PP by same extrusion neck ring mold more outer, 3 layers of composite pipe that co-extrusion, adjacent layer combine closely of PVDC mesosphere and polyolefin PE internal layer; Wherein, the machine barrel section length of the extruder of polyolefin PP skin and polyolefin PE internal layer is divided into 4 sections, and every section temperature is: 1 section is 167 ℃, and 2 sections is 172 ℃; 3 sections is 182 ℃, and 4 sections is 182 ℃, and the die head length of extruder die Head Section is divided into 7 sections; Every section temperature is: 1 section is 185 ℃, and 2 sections is 182 ℃, and 3 sections is 182 ℃; 4 sections is 187 ℃, and 5 sections is 192 ℃, and 6 sections is 195 ℃; 7 sections is 200 ℃, and the extruder rotating speed is 50rad/min, and hauling speed is 400cm/min; The machine barrel section length of the extruder in PVDC mesosphere is divided into 4 sections, and every section temperature is: 1 section is 162 ℃, and 2 sections is 172 ℃; 3 sections is 182 ℃, and 4 sections is 177 ℃, and the die head length of extruder die Head Section is divided into 4 sections; Every section temperature is: 1 section is 190 ℃, and 2 sections is 182 ℃, and 3 sections is 177 ℃; 4 sections is 163 ℃, and the extruder rotating speed is 50rad/min, and hauling speed is 400cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.3: 1, and the outer field density of polyolefin PP is 0.896g/cm 3, the density of polyolefin PE internal layer is 0.935g/cm 3, the density in PVDC mesosphere is 1.83g/cm 3, in conjunction with after composite pipe in the vacuum of 0.02Mpa, after water temperature is 21 ℃ of following sizings, place 19 ℃ water to carry out the secondary cooling again, product is printed, traction, the scale cutting tubing of the present invention, after Checking of finished products is qualified, packing, warehouse-in; Said polyolefin PP skin is mixed for 4 parts by 2 parts of the grey color masterbatches of 95 parts of by weight Korea S star R200P dawn, Cabot board and POE plasticizer and is crushed to; Said PVDC mesosphere is mixed for 4 parts by by weight 0.3 part in 5 parts of 95 parts of PVDC resins, lead sulfate tribasics, paraffin and processing aid ACR201 and is crushed to; Said polyolefin PE internal layer is mixed for 2 parts by the grey color masterbatch of by weight 95 parts of PE resins, Cabot board and is crushed to.
Embodiment 2:
After the present invention also extrudes heating by extruder respectively with polyolefin PP skin, PVDC mesosphere, polyolefin PE internal layer, extrude skin by same extrusion neck ring mold again by polyolefin PP, 3 layers of composite pipe that co-extrusion, adjacent layer combine closely of PVDC mesosphere and polyolefin PE internal layer, wherein; The machine barrel section length of the extruder of polyolefin PP skin and polyolefin PE internal layer is divided into 4 sections, and every section temperature is: 1 section is 169 ℃, and 2 sections is 176 ℃; 3 sections is 185 ℃, and 4 sections is 185 ℃, and the die head length of extruder die Head Section is divided into 7 sections; Every section temperature is: 1 section is 190 ℃, and 2 sections is 185 ℃, and 3 sections is 185 ℃; 4 sections is 189 ℃, and 5 sections is 200 ℃, and 6 sections is 200 ℃; 7 sections is 210 ℃, and the extruder rotating speed is 80rad/min, and hauling speed is 600cm/min; The machine barrel section length of the extruder in PVDC mesosphere is divided into 4 sections, and every section temperature is: 1 section is 165 ℃, and 2 sections is 175 ℃; 3 sections is 186 ℃, and 4 sections is 180 ℃, and the die head length of extruder die Head Section is divided into 4 sections; Every section temperature is: 1 section is 200 ℃, and 2 sections is 186 ℃, and 3 sections is 180 ℃; 4 sections is 165 ℃, and the extruder rotating speed is 85rad/min, and hauling speed is 550cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.4: 1, and the outer field density of polyolefin PP is 0.898g/cm 3, the density of polyolefin PE internal layer is 0.945g/cm 3, the density in PVDC mesosphere is 1.9g/cm 3, in conjunction with after composite pipe in the vacuum of 0.03Mpa, after water temperature is 23 ℃ of following sizings, place 21 ℃ water to carry out the secondary cooling again, product is printed, traction, the scale cutting tubing of the present invention, after Checking of finished products is qualified, packing, warehouse-in; Said polyolefin PP skin is mixed for 5 parts by 3 parts of the white color masterbatches of by weight Korea S star R200P100 dawn part, Cabot board and EVA plasticizer and is crushed to; Said PVDC mesosphere is mixed for 6 parts by by weight 0.4 part in 6 parts of 97 parts of PVDC resins, zine stearates, PE wax and processing aid ACR401 and is crushed to; Said polyolefin PE internal layer is mixed for 3 parts by the white color masterbatch of by weight 97 parts of PE resins, Cabot board and is crushed to.
Embodiment 3:
After the present invention also extrudes heating by extruder respectively with polyolefin PP skin, PVDC mesosphere, polyolefin PE internal layer, extrude skin by same extrusion neck ring mold again by polyolefin PP, 3 layers of composite pipe that co-extrusion, adjacent layer combine closely of PVDC mesosphere and polyolefin PE internal layer, wherein; The machine barrel section length of the extruder of polyolefin PP skin and polyolefin PE internal layer is divided into 4 sections, and every section temperature is: 1 section is 172 ℃, and 2 sections is 179 ℃; 3 sections is 189 ℃, and 4 sections is 189 ℃, and the die head length of extruder die Head Section is divided into 7 sections; Every section temperature is: 1 section is 198 ℃, and 2 sections is 189 ℃, and 3 sections is 189 ℃; 4 sections is 193 ℃, and 5 sections is 205 ℃, and 6 sections is 207 ℃; 7 sections is 213 ℃, and the extruder rotating speed is 115rad/min, and hauling speed is 850cm/min; The machine barrel section length of the extruder in PVDC mesosphere is divided into 4 sections, and every section temperature is: 1 section is 169 ℃, and 2 sections is 179 ℃; 3 sections is 189 ℃, and 4 sections is 183 ℃, and the die head length of extruder die Head Section is divided into 4 sections; Every section temperature is: 1 section is 203 ℃, and 2 sections is 189 ℃, and 3 sections is 183 ℃; 4 sections is 169 ℃, and the extruder rotating speed is 110rad/min, and hauling speed is 750cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.5: 1, and the outer field density of polyolefin PP is 0.9g/cm 3, the density of polyolefin PE internal layer is 0.955g/cm 3, the density in PVDC mesosphere is 1.95g/cm 3, in conjunction with after composite pipe in the vacuum of 0.035MPa, after water temperature is 24 ℃ of following sizings, place 22 ℃ water to carry out the secondary cooling again, product is printed, traction, the scale cutting tubing of the present invention, after Checking of finished products is qualified, packing, warehouse-in; Said polyolefin PP skin is mixed for 7 parts by 4 parts of the color masterbatches of the white of 105 parts of by weight Korea S star R200P dawn, Cabot board and EPDM plasticizer and is crushed to; Said PVDC mesosphere is mixed for 9 parts by by weight 0.5 part in 7 parts of 98 parts of PVDC resins, barium stearates, OPE wax and processing aid AMS and is crushed to; Said polyolefin PE internal layer is mixed for 4 parts by the color masterbatch of the white of by weight 98 parts of PE resins, Cabot board and is crushed to.
The relevant process parameter of the present invention is provided by following table:
Polyolefin layer:
The PVDC layer:
Figure G2009100662843D00062
Polyolefin PP/PVDC/ polyolefin PE multilayer composite pipe of the present invention is to be processed by multi-layer co-extruded method; Adjacent layer is combined closely, and it is characterized by multilayer tubing is solid wall pipe, is respectively from inside to outside: nontoxic, odorless and corrosion-resistant, intensity, rigidity be polyolefin PE internal layer preferably all; Barrier is high, toughness is strong and the good PVDC mesosphere of low-temperature heat-sealing, thermal shrinkage and chemical stability; Nontoxic, tasteless, odorless, have that good heat resistance and winter hardiness, chemical stability are good, also to have a smooth polyolefin PP of higher rigidity and toughness and tube wall outer, these polymeric layers of polyolefin PP/PVDC/ polyolefin PE are combined with each other and can give full play to the excellent properties of various materials and remedy its shortcoming, improve the quality of products; The present invention efficiently solves problems such as toxic, life-span of supplying drinking water pipeline is short; And cheap excellent performance has the good processibility of extruding, and has reduced cost; Avoided secondary pollution; Can be widely used in industries such as the transformation of the network of rivers, rural area, municipal engineering water supply, medicine safe and sanitary, food manufacturing and packing, and processing is simple, intensity is high; Good toughness, impact resistance are strong, and economic and social benefit is remarkable.

Claims (9)

1. the production method of a polyolefin PP, PVDC and polyolefin PE multilayer composite pipe is characterized in that, polyolefin PP skin, PVDC mesosphere, polyolefin PE internal layer are extruded heating by extruder respectively after; Again by same extrusion neck ring mold be extruded into that rare polyolefin PP is outer, multi-layer co-extruded, the composite pipe that adjacent layer combines closely of PVDC mesosphere and polyolefin PE internal layer, wherein, the machine barrel section length of the extruder of the outer and polyolefin PE internal layer of polyolefin PP is divided into 4 sections; Every section temperature is: 1 section is 170 ± 5 ℃, and 2 sections is 175 ± 5 ℃, and 3 sections is 185 ± 5 ℃; 4 sections is 185 ± 5 ℃, and the die head length of extruder die Head Section is divided into 7 sections, and every section temperature is: 1 section is 190 ± 10 ℃; 2 sections is 185 ± 5 ℃, and 3 sections is 185 ± 5 ℃, and 4 sections is 190 ± 5 ℃; 5 sections is 200 ± 10 ℃, and 6 sections is 200 ± 10 ℃, and 7 sections is 205 ± 10 ℃; The extruder rotating speed is 40-120rad/min, and hauling speed is 350-900cm/min; The machine barrel section length of the extruder in PVDC mesosphere is divided into 4 sections, and every section temperature is: 1 section is 165 ± 5 ℃, and 2 sections is 175 ± 5 ℃; 3 sections is 185 ± 5 ℃, and 4 sections is 180 ± 5 ℃, and the die head length of extruder die Head Section is divided into 4 sections; Every section temperature is: 1 section is 195 ± 10 ℃, and 2 sections is 185 ± 5 ℃, and 3 sections is 180 ± 5 ℃; 4 sections is 165 ± 5 ℃, and the extruder rotating speed is 40-120rad/min, and hauling speed is 300-800cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.3~0.5: 1, and the outer field density of polyolefin PP is 0.895~0.91g/cm 3, the density of polyolefin PE internal layer is 0.93~0.956g/cm 3, the density in PVDC mesosphere is 1.8-1.96g/cm 3In conjunction with after composite pipe in the vacuum of 0.015-0.04MPa, after water temperature is 20-25 ℃ of following sizing, place 18-23 ℃ water to carry out the secondary cooling again; Product is printed; Traction, scale cutting tubing of the present invention, said polyolefin PP skin is mixed for 3~8 parts by by weight 1~4 part of PP-R 90-110 part, colorant and plasticizer and is crushed to; Said PVDC mesosphere is mixed for 3~10 parts by by weight PVDC resin 90-100 part, 4~8 parts of stabilizers, 0.2~0.5 part of oiling agent and processing aid and is crushed to; Said polyolefin PE internal layer is mixed for 1~4 part and is crushed to by PE resin 90-100 part, colorant by weight.
2. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, said colorant is the color masterbatch of the grey or the white of Cabot board.
3. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe; It is characterized in that; Said plasticizer is the maleic anhydride graft phase solvent, any as in POE plasticizer, EVA plasticizer, SBS plasticizer, EPDM plasticizer, PE plasticizer, the ABS plasticizer.
4. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, said stabilizer is any in lead sulfate tribasic, zine stearate, the barium stearate.
5. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, said oiling agent is any in paraffin, PE wax, the OPE wax.
6. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, said processing aid is processing aid ACR201, or processing aid ACR401, or processing aid AMS.
7. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, extrudes 3 layers of composite pipe that co-extrusion, adjacent layer combine closely by polyolefin PP skin, PVDC mesosphere and polyolefin PE internal layer by same extrusion neck ring mold; Polyolefin PP every section temperature in extruder barrel district outer and the polyolefin PE internal layer is: 1 section is 167 ℃, and 2 sections is 172 ℃, and 3 sections is 182 ℃; 4 sections is 182 ℃, and every section temperature of extruder die Head Section is: 1 section is 185 ℃, and 2 sections is 182 ℃; 3 sections is 182 ℃, and 4 sections is 187 ℃, and 5 sections is 192 ℃; 6 sections is 195 ℃; 7 sections is 200 ℃, and the extruder rotating speed is 50rad/min, and hauling speed is 400cm/min; The every section temperature in extruder barrel district in PVDC mesosphere is: 1 section is 162 ℃, and 2 sections is 172 ℃, and 3 sections is 182 ℃; 4 sections is 177 ℃, and every section temperature of extruder die Head Section is: 1 section is 190 ℃, and 2 sections is 182 ℃; 3 sections is 177 ℃, and 4 sections is 163 ℃, and the extruder rotating speed is 50rad/min; Hauling speed is 400cm/min, and polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.3: 1, and the outer field density of polyolefin PP is 0.896g/cm 3, the density of polyolefin PE internal layer is 0.935g/cm 3, the density in PVDC mesosphere is 1.83g/cm 3In conjunction with after composite pipe in the vacuum of 0.02Mpa, after water temperature is 21 ℃ of following sizings, place 19 ℃ water to carry out the secondary cooling again; Product is printed; Traction, scale cutting tubing of the present invention, said polyolefin PP skin is mixed for 4 parts by 2 parts of the grey color masterbatches of by weight 95 parts of Korea S star R200P dawn, Cabot board and POE plasticizer and is crushed to; Said PVDC mesosphere is mixed by by weight 0.3 part of sharp processing aid ACR2014 part of 5 parts of 95 parts of PVDC resins, lead sulfate tribasics, paraffin and is crushed to; Said polyolefin PE internal layer is mixed for 2 parts by the grey color masterbatch of by weight 95 parts of PE resins, Cabot board and is crushed to.
8. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, extrudes 3 layers of composite pipe that co-extrusion, adjacent layer combine closely by polyolefin PP skin, PVDC mesosphere and polyolefin PE internal layer by same crowded mouthful of mould; Polyolefin PP every section temperature in extruder barrel district outer and the polyolefin PE internal layer is: 1 section is 169 ℃, and 2 sections is 176 ℃, and 3 sections is 185 ℃; 4 sections is 185 ℃, and every section temperature of extruder die Head Section is: 1 section is 190 ℃, and 2 sections is 185 ℃; 3 sections is 185 ℃, and 4 sections is 189 ℃, and 5 sections is 200 ℃; 6 sections is 200 ℃; 7 sections is 210 ℃, and the extruder rotating speed is 80rad/min, and hauling speed is 600cm/min; The every section temperature in extruder barrel district in PVDC mesosphere is: 1 section is 165 ℃, and 2 sections is 175 ℃, and 3 sections is 186 ℃; 4 sections is 180 ℃, and every section temperature of extruder die Head Section is: 1 section is 200 ℃, and 2 sections is 186 ℃; 3 sections is 180 ℃; 4 sections is 165 ℃, and the extruder rotating speed is 85rad/min, and hauling speed is 550cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.4: 1, and the outer field density of polyolefin PP is 0.898g/cm 3, the density of polyolefin PE internal layer is 0.945g/cm 3, the density in PVDC mesosphere is 1.9g/cm 3In conjunction with after composite pipe in the vacuum of 0.03Mpa, after water temperature is 23 ℃ of following sizings, place 21 ℃ water to carry out the secondary cooling again; Product is printed; Traction, scale cutting tubing of the present invention, said polyolefin PP skin is mixed for 5 parts by 3 parts of the white color masterbatches of by weight 100 parts of Korea S star R200P dawn, Cabot board and EVA plasticizer and is crushed to; Said PVDC mesosphere is mixed by by weight 0.4 part in 6 parts of 97 parts of PVDC resins, zine stearates, PE wax and processing aid ACR4016 part and is crushed to; Said polyolefin PE internal layer is mixed for 3 parts by the white color masterbatch of by weight 97 parts of PE resins, Cabot board and is crushed to.
9. the production method of polyolefin PP according to claim 1, PVDC and polyolefin PE multilayer composite pipe is characterized in that, extrudes 3 layers of composite pipe that co-extrusion, adjacent layer combine closely by polyolefin PP skin, PVDC mesosphere and polyolefin PE internal layer by same extrusion neck ring mold; Polyolefin PP every section temperature in extruder barrel district outer and the polyolefin PE internal layer is: 1 section is 172 ℃, and 2 sections is 179 ℃, and 3 sections is 189 ℃; 4 sections is 189 ℃, and every section temperature of extruder die Head Section is: 1 section is 198 ℃, and 2 sections is 189 ℃; 3 sections is 189 ℃, and 4 sections is 193 ℃, and 5 sections is 205 ℃; 6 sections is 207 ℃; 7 sections is 213 ℃, and the extruder rotating speed is 115rad/min, and hauling speed is 850cm/min; The every section temperature in extruder barrel district in PVDC mesosphere is: 1 section is 169 ℃, and 2 sections is 179 ℃, and 3 sections is 189 ℃; 4 sections is 183 ℃, and every section temperature of extruder die Head Section is: 1 section is 203 ℃, and 2 sections is 189 ℃; 3 sections is 183 ℃; 4 sections is 169 ℃, and the extruder rotating speed is 110rad/min, and hauling speed is 750cm/min; Polyolefin PP is outer: the PVDC mesosphere: the thickness ratio of polyolefin PE internal layer is 1: 0.5: 1, and the outer field density of polyolefin PP is 0.9g/cm 3, the density of polyolefin PE internal layer is 0.955g/cm 3, the density in PVDC mesosphere is 1.95g/cm 3In conjunction with after composite pipe in the vacuum of 0.035MPa, after water temperature is 24 ℃ of following sizings, place 22 ℃ water to carry out the secondary cooling again; Product is printed; Traction, scale cutting tubing of the present invention, said polyolefin PP skin is mixed for 7 parts by 4 parts of the color masterbatches of the white of by weight 105 parts of Korea S star R200P dawn, Cabot board and EPDM plasticizer and is crushed to; Said PVDC mesosphere is mixed for 9 parts by by weight 0.5 part in 7 parts of 98 parts of PVDC resins, barium stearates, OPE wax and processing aid AMS and is crushed to; Said polyolefin PE internal layer is mixed for 4 parts by the color masterbatch of the white of by weight 98 parts of PE resins, Cabot board and is crushed to.
CN2009100662843A 2009-10-28 2009-10-28 Production method of polyolefin PP/PVDC/polyolefin PE multilayer compounded tube Expired - Fee Related CN101696752B (en)

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