CN1105743C - Foamed UPVC plastic pipe and its preparing process - Google Patents
Foamed UPVC plastic pipe and its preparing process Download PDFInfo
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- CN1105743C CN1105743C CN 00123967 CN00123967A CN1105743C CN 1105743 C CN1105743 C CN 1105743C CN 00123967 CN00123967 CN 00123967 CN 00123967 A CN00123967 A CN 00123967A CN 1105743 C CN1105743 C CN 1105743C
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Abstract
The present invention provides a foaming UPVC plastic pipe material and a preparation technique thereof. The pipe material comprises 40 to 60 parts of PVC resin, 1 to 4 parts of stabilizer, 0.5 to 8 parts of foaming agent, 1 to 4 parts of acrylic resin, 3 to 10 parts of engineering plastic, 1 to 4 parts of compatibilizer, 3 to 4 parts of toughening agent, 0.5 to 4 parts of cross-linking agent, 0.5 to 2 parts of lubricant and 10 to 30 parts of filling agent. The foaming UPVC plastic pipe material with high performance is prepared through an extruding production technique of a one-step method. The performance of the rigidity, the impact resilience, the weatherability, the tensile strength of the pipe material is better than that of the existing foaming UPVC plastic pipe materials.
Description
The present invention relates to a kind of foaming Vybak tubing and preparation technology thereof, belong to technical field of plastic.
Because polyvinyl chloride (being called for short PVC) expanded plastic has low noise, save advantages such as material, therefore often be used to manufacture the PVC foam pipe, but because the molecular structure property of PVC itself, it is sterically hindered big to show as strong polarity and main chain strand internal rotation, lower temperature resistance is poor, frangible, weathering resistance is poor, adding toughner commonly used for this reason carries out modification, but to sacrifice the PVC rigidity is cost, still is that two step method is produced so no matter adopt single stage method, owing to do not add engineering plastics, do not carry out little crosslinked and high filling, so its over-all properties fails to take place remarkable improvement; The prescription that adopts both at home and abroad mostly is to adopt the lead salt system simultaneously, and not only sanitation performance is poor, and harmful, and mechanical property is also relatively poor.
The objective of the invention is to overcome above-mentioned deficiency, by little crosslinked, add multiple auxiliary agent, adopt one-step method production process, provide a kind of impact-resistance, the nontoxic foaming Vybak tubing that tensile strength, weathering resistance all improve a lot.
Another purpose of the present invention is to provide a kind of preparation technology of the Vybak tubing that foams.
The objective of the invention is to realize: a kind of foaming Vybak tubing by following proposal, it contains (by weight) polyvinyl chloride (PVC) resin 40-60 part, stablizer 1-4 part, whipping agent 0.5-8, acrylic resin 1-4 part, engineering plastics 3-10 part, expanding material 1-4 part, toughner 3-4 part, linking agent 0.5-4 part, lubricant 0.5-2 part, weighting agent 10-30 part.
Described stablizer is any one in rare-earth stabilizer, the organotin stabilizer.
Described whipping agent is the mixture of any one or two kinds in Cellmic C 121, the penta methyne tetramine.
Described engineering plastics are that Acrylonitrile-butadiene-styrene Copolymer (be called for short ABS), poly-carbonic acid are indulged in, at least a in the polymeric amide.
Described toughner is at least a in chlorinatedpolyethylene, methyl methacrylate-divinyl-styrol copolymer, paracril, the ethene-vinyl acetate between to for plastic-carbon monoxide multipolymer.
Described linking agent is any one in dicumyl peroxide, benzoyl peroxide, the Vinylstyrene.
Described lubricant is any one in paraffin, stearic acid, the polyethylene wax.
Described weighting agent is at least a in lime carbonate, talcum powder, silica powder, kaolin, the mica.
Described expanding material is indulge at least a in the multipolymer, methacrylic acid-butadiene-styrene elastomer graft copolymer, terpolymer EP rubber (being called for short EPDM) of ethene-acetate ethylene copolymer, ethene-vinylformic acid.
Also can contain active nano material 0.5-5 part in the foaming Vybak tubing of the present invention.
The preparation technology of a kind of Vybak tubing that foams of the present invention, its step is in regular turn:
A, weighting agent is carried out activation treatment, make reinforcing filler, standby;
B, get 1/3 the amount polyvinyl chloride resin, add stablizer, whipping agent, acrylic resin, engineering plastics, toughner, linking agent, lubricant, expanding material, reinforcing filler, stir, add remaining polyvinyl chloride resin again, high temperature is mediated under 100-125 ℃ temperature;
C, said mixture is cooled to 30-40 ℃;
D, said mixture is inserted in the hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, parameter is:
Die head compression ratio: S1: S2=1: 10-36
Port mould diameter with die head straight portion length ratio is: D: L=1: 2-5
Barrel zone temperature: transportation section: 180-190 ℃
Compression section: 175-185 ℃
Melt zone: 170-180 ℃
Metering zone: 170-180 ℃
Merging core: 160-180 ℃
Head: 160-180 ℃
Mould: 190-210 ℃ in mouth.
The present invention is by little crosslinked intermolecular formation partial mesh topology of PVC that makes, intermolecularly more tend to balance to reactive force in length and breadth, impact-resistance, tensile strength, weathering resistance are improved, add auxiliary agents such as high filling and engineering plastics, active nano material, the rigidity of Vybak tubing and stability are improved.The lead salt system that the present invention breaks traditions and adopt non-toxic stabilizer to foam makes it to become the green material of non-toxic sanitary.Φ 110 * 3.2mm plastic pipe that the rigid polyvinyl chloride raw material that foams with the present invention is made carries out the GB test, and the result is: tensile strength＞40Mpa, than the high 15-35% of uncrosslinked foam pipe; Ring stiffness S2＞9.5 are than the high 10-20% of uncrosslinked foam pipe; 0 ℃ of falling weight impact test, the weight of dropping hammer 3kg, shock height 2m, 100% passes through, and is better than the solid tubing 5-6 of GB rigid polyvinyl chloride doubly, and than the high 15-50% of uncrosslinked foam pipe, heat-drawn wire is higher more than 10 ℃ than solid tubing and common foam pipe.
For the ease of understanding and implementing, the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
Get lime carbonate 90kg, talcum powder 90kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get the polyvinyl chloride resin of 200kg, add rare-earth stabilizer 28kg, Cellmic C 121 15kg penta methyne tetramine 5kg, acrylic resin 30kg, ABS 40kg, polycarbonate 40kg, chlorinatedpolyethylene 30kg, dicumyl peroxide 15kg, stearic acid 15kg, ethene-acetate ethylene copolymer 40kg, active nano material titanium dioxide 5kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 400kg again, mediate at 115 ℃ temperature high temperature, be cooled to 40 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 30
Port mould diameter with die head straight portion length ratio is: D: L=1: 5
Barrel zone temperature: transportation section: 188 ℃
Compression section: 180 ℃
Melt zone: 175 ℃
Metering zone: 170 ℃
Merging core: 170 ℃
Head: 175 ℃
Mouth mould: 200 ℃.
Embodiment 2
Get lime carbonate 120kg, carry out activation treatment, make reinforcing filler according to common process, standby; Get the polyvinyl chloride resin of 130kg, add organotin stabilizer 24kg, Cellmic C 121 5kg, acrylic resin 20kg, ABS 67kg, methyl methacrylate-divinyl-styrol copolymer 18kg, ethene-vinyl acetate between to for plastic-carbon monoxide multipolymer 17kg, benzoyl peroxide 40kg, polyethylene wax 14kg, ethene-acetate ethylene copolymer 15kg, ethene-acrylate copolymer 15kg, active nano material silica 1 2kg and standby reinforcing filler, stir, the polyvinyl chloride resin that adds 270kg again, high temperature is mediated under 100 ℃ temperature, is cooled to 35 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 22
Port mould diameter with die head straight portion length ratio is: D: L=1: 4
Barrel zone temperature: transportation section: 185 ℃
Compression section: 178 ℃
Melt zone: 170 ℃
Metering zone: 170 ℃
Merging core: 160 ℃
Head: 165 ℃
Mouth mould: 200 ℃.
Embodiment 3
Get lime carbonate 60kg, talcum powder 60kg, silica powder 60kg, kaolin 60kg, mica 60kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get the polyvinyl chloride resin of 170kg, add organotin stabilizer 35kg, penta methyne tetramine 30kg, acrylic resin 40kg, ABS 40kg, polycarbonate 30kg, kymene 0kg, chlorinatedpolyethylene 10kg, methyl methacrylate-divinyl-styrol copolymer 10kg, paracril 10kg, ethene-vinyl acetate between to for plastic-carbon monoxide multipolymer 10kg, Vinylstyrene 35kg, paraffin 20kg, ethene-acetate ethylene copolymer 10kg, ethene-acrylate copolymer 10kg, methacrylic acid-butadiene-styrene elastomer graft copolymer 10kg, commodity EPDM 10kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 330kg again, high temperature is mediated under 125 ℃ temperature, is cooled to 40 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 36
Port mould diameter with die head straight portion length ratio is: D: L=1: 5
Barrel zone temperature: transportation section: 190 ℃
Compression section: 185 ℃
Melt zone: 180 ℃
Metering zone: 175 ℃
Merging core: 180 ℃
Head: 180 ℃
Mouth mould: 210 ℃.
Embodiment 4
Get lime carbonate 70kg, talcum powder 60kg, kaolin 60kg, mica 60kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get the polyvinyl chloride resin of 150kg, add rare-earth stabilizer 10kg, Cellmic C 121 60kg, acrylic resin 15kg, the poly-carbonic acid 30kg that indulges in, chlorinatedpolyethylene 15kg, paracril 13kg, ethene-vinyl acetate between to for plastic-carbon monoxide multipolymer 10kg, benzoyl peroxide 20kg, paraffin 5kg, methacrylic acid-butadiene-styrene elastomer graft copolymer 8kg, commodity EPDM7kg, active nano material lime carbonate 50kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 300kg again, high temperature is mediated under 120 ℃ temperature, is cooled to 35 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 20
Port mould diameter with die head straight portion length ratio is: D: L=1: 2
Barrel zone temperature: transportation section: 180 ℃
Compression section: 175 ℃
Melt zone: 172 ℃
Metering zone: 170 ℃
Merging core: 165 ℃
Head: 165 ℃
Mouth mould: 190 ℃.
Embodiment 5
Get lime carbonate 62.5kg, talcum powder 60kg, silica powder 60kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get the polyvinyl chloride resin of 170kg, add organotin stabilizer 25kg, Cellmic C 121 30kg, acrylic resin 20kg, polycarbonate 35kg, kymene 2kg, chlorinatedpolyethylene 20kg, methyl methacrylate-divinyl-styrol copolymer 15kg, dicumyl peroxide 30kg, stearic acid 14.5kg, ethene-acetate ethylene copolymer 8kg, ethene-acrylate copolymer 9kg, methacrylic acid-butadiene-styrene elastomer graft copolymer 8kg and standby reinforcing filler, stir, the polyvinyl chloride resin that adds 330kg again, high temperature is mediated under 110 ℃ temperature, is cooled to 30 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 15
Port mould diameter with die head straight portion length ratio is: D: L=1: 3
Barrel zone temperature: transportation section: 190 ℃
Compression section: 185 ℃
Melt zone: 180 ℃
Metering zone: 180 ℃
Merging core: 172 ℃
Head: 180 ℃
Mouth mould: 205 ℃.
Embodiment 6
Get talcum powder 100kg, carry out activation treatment, make reinforcing filler according to common process, standby; Get the polyvinyl chloride resin of 180kg, add organotin stabilizer 40kg, Cellmic C 121 40kg, penta methyne tetramine 40kg, acrylic resin 10kg, polymeric amide 50kg, methyl methacrylate-divinyl-styrol copolymer 32kg, Vinylstyrene 5kg, polyethylene wax 10kg, EPDM 10kg and standby reinforcing filler, stir, the polyvinyl chloride resin that adds 370kg again, high temperature is mediated under 105 ℃ temperature, is cooled to 30 ℃ then; Said mixture is put into hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, the forcing machine parameter is:
Die head compression ratio: S1: S2=1: 10
Port mould diameter with die head straight portion length ratio is: D: L=1: 4
Barrel zone temperature: transportation section: 185 ℃
Compression section: 175 ℃
Melt zone: 170 ℃
Metering zone: 170 ℃
Merging core: 160 ℃
Head: 160 ℃
Mouth mould: 195 ℃.
The present invention's Vybak tubing that foams has unleaded, no plasticising, high tensile, high resistance The characteristics such as punching property, after tested, its combination property is all than uncrosslinked PVC-U foam pipe or plasticising is arranged The combination property of pvc tube material improves a lot.
Claims (13)
1, a kind of foaming Vybak tubing, it contains (by weight) polyvinyl chloride (PVC) RESINS 40-60 part, stablizer 1-4 part, whipping agent 0.5-8 part, acrylic resin 1-4 part, engineering plastics 3-10 part, expanding material 1-4 part, toughner 3-4 part, linking agent 0.5-4 part, lubricant 0.5-2 part, weighting agent 10-30 part, wherein said toughner is chlorinatedpolyethylene, methyl methacrylate-divinyl-styrol copolymer, paracril, at least a in ethene-vinyl acetate between to for plastic-carbon monoxide multipolymer, described expanding material is ethene-acetate ethylene copolymer, ethene-acrylate copolymer, methacrylic acid-butadiene-styrene elastomer graft copolymer, at least a in the terpolymer EP rubber.
2, according to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that described components contents is (by weight): polyvinyl chloride (PVC) RESINS 45-55 part, stablizer 2.4-2.8 part, whipping agent 2-6 part, acrylic resin 1.5-3 part, engineering plastics 5-8 part, expanding material 1.5-3 part, toughner 3.2-3.8 part, linking agent 1.5-3.5 part, lubricant 1-1.5 part, weighting agent 12-25 part.
3, according to the described a kind of foaming Vybak tubing of claim 2, it is characterized in that described components contents is (by weight): 50 parts of polyvinyl chloride (PVC) RESINS, 2.5 parts of stablizers, 3 parts of whipping agents, 2 parts of acrylic resins, 6.7 parts in engineering plastics, 2.5 parts of expanding materials, 3.5 parts of toughner, 3 parts of linking agents, 1.45 parts of lubricants, 18.25 parts of weighting agents.
4, according to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that described stablizer is any one in rare-earth stabilizer, the organotin stabilizer.
According to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that 5, described whipping agent is the mixture of any one or two kinds in Cellmic C 121, the penta methyne tetramine.
According to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that 6, described engineering plastics are that Acrylonitrile-butadiene-styrene Copolymer, poly-carbonic acid are indulged in, at least a in the polymeric amide.
7, according to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that described linking agent is any one in dicumyl peroxide, benzoyl peroxide, the Vinylstyrene.
8, according to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that described lubricant is any one in paraffin, stearic acid, the polyethylene wax.
According to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that 9, described weighting agent is at least a in lime carbonate, talcum powder, silica powder, kaolin, the mica.
10, according to the described a kind of foaming Vybak tubing of claim 1, it is characterized in that it also contains active nano material 0.5-5 part.
11, according to the described a kind of foaming Vybak tubing of claim 10, it is characterized in that described active nano material is any one in titanium dioxide, silicon-dioxide, the lime carbonate.
12, according to the preparation technology of each foaming Vybak tubing described in the claim 1-9, its step is in regular turn:
A, weighting agent is carried out activation treatment, make reinforcing filler, standby;
B, get 1/3 the amount polyvinyl chloride (PVC) RESINS, add stablizer, whipping agent, acrylic resin, engineering plastics, toughner, linking agent, lubricant, expanding material, reinforcing filler, stir, add remaining polyvinyl chloride (PVC) RESINS again, high temperature is mediated under 100-125 ℃ temperature;
C, said mixture is cooled to 30-40 ℃;
D, said mixture is inserted in the hypercone shape twin screw extruder, adopt single stage method to make plastic pipe, parameter is:
Die head compression ratio: S1: S2=1: 10-36
Port mould diameter with die head straight portion length ratio is: D: L=1: 2-5
Barrel zone temperature: transportation section: 180-190 ℃
Compression section: 175-185 ℃
Melt zone: 170-180 ℃
Metering zone: 170-180 ℃
Merging core: 160-180 ℃
Head: 160-180 ℃
Mould: 190-210 ℃ in mouth.
13, according to the described preparation technology of claim 12, it is characterized in that, in step (b), also can add the active nano material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123967 CN1105743C (en) | 2000-10-26 | 2000-10-26 | Foamed UPVC plastic pipe and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123967 CN1105743C (en) | 2000-10-26 | 2000-10-26 | Foamed UPVC plastic pipe and its preparing process |
Publications (2)
| Publication Number | Publication Date |
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| CN1304957A CN1304957A (en) | 2001-07-25 |
| CN1105743C true CN1105743C (en) | 2003-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00123967 Expired - Fee Related CN1105743C (en) | 2000-10-26 | 2000-10-26 | Foamed UPVC plastic pipe and its preparing process |
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