CN1098307C - Modified UPVC plastic pipe and its preparing process - Google Patents
Modified UPVC plastic pipe and its preparing process Download PDFInfo
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- CN1098307C CN1098307C CN 00123968 CN00123968A CN1098307C CN 1098307 C CN1098307 C CN 1098307C CN 00123968 CN00123968 CN 00123968 CN 00123968 A CN00123968 A CN 00123968A CN 1098307 C CN1098307 C CN 1098307C
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Abstract
The present invention provides a modified UPVC plastic pipe and a preparation technique thereof. The modified UPVC plastic pipe material comprises 50 to 90 parts of PVC resin, 8 to 30 parts of PE resin, 0.5 to 5 parts of acrylic resin, 5 to 20 parts of engineering plastic, 2 to 15 parts of toughening agent, 2 to 5 parts of compatibilizer, 1.8 to 5 parts of stabilizer, 0.5 to 3 parts of lubricant, 10 to 32.5 parts of filling agent and 0.5 to 5 parts of active nanophase material. The materials are made into raw materials of modified UPVE plastic through the following working procedures of material mixing, high-temperature kneading, cooling, etc. Then the raw materials are made into plastics pipes. The performance, such as the rigidity, the impact resilience, the weatherability, the tensile strength, etc. of the pipe is better than that of the existing UVPC plastic pipe.
Description
The present invention relates to a kind of Vybak tubing and preparation technology thereof of modification.
People's Vybak commonly used is manufactured tubing, it has that handling ease, bonding convenience, cost are low, good rigidly, advantage such as corrosion-resistant, but because the molecular structure characteristics of rigid polyvinyl chloride itself, its second-order transition temperature is 87 ℃, it is big to show as fragility at normal temperatures, and lower temperature resistance is poor, and weathering resistance is poor, easy to crack, the tubing that the is used for feedwater piping example that breaks is a lot; Therefore people are with polyvinyl chloride (being called for short PVC) resin and various toughner blending and modifying, erosion-resisting characteristics is improved, but corresponding rigidity descends, tensile strength reduces, and has lost the advantage of PVC itself, even add multiple toughner (as EVA, CPE, NBR, MBS etc.), its over-all properties does not significantly change yet, in order to make Vybak can guarantee rigidity, tensile strength, have good low temperature impact performance, weathering resistance (environmental cracking) again, be the problem to be solved in the present invention.
The objective of the invention is to overcome outside the above-mentioned deficiency, provide a kind of both had good low temperature impact performance, weathering resistance, the modified hard polyvinyl chloride plastic pipe that has good rigidity and tensile strength again.
Another purpose of the present invention is to provide a kind of preparation technology of modified hard polyvinyl chloride plastic pipe.
The objective of the invention is to realize: a kind of modified hard polyvinyl chloride plastics by following proposal, it contains (by weight) polyvinyl chloride (PVC) resin 50-90 part, polyethylene (being called for short PE) resin 8-30 part, acrylic resin 0.5-5 part, engineering plastics 5-20 part, toughner 2-15 part, expanding material 2-5 part, stablizer 1.8-5 part, lubricant 0.5-3 part, weighting agent 10-32.5 part, active nano material 0.5-5 part.
The engineering plastics of stating can be in acrylonitrile-butadiene-styrene copolymer (be called for short ABS), polycarbonate, polyoxymethylene, the polymeric amide at least a.
Described toughner can be in chlorinatedpolyethylene, paracril, acrylonitrile-butadiene-styrene copolymer, the methacrylate butadi ene styrene copolymer at least a.
Described expanding material can be in methacrylic acid-butadiene-styrene elastomer graft copolymer, ethylene-acrylate copolymer, terpolymer EP rubber (being called for short EPDM), maleic anhydride graft polyolefin copolymer, the ethene-sour ethylene copolymer at least a.
Described stablizer can be in organotin stabilizer, compound lead stabilizer, rare-earth stabilizer, the monomer lead salt metal soap stabilisers any one.
Described lubricant can be in stearic acid, paraffin, the polyethylene wax any one.
Described weighting agent can be in lime carbonate, talcum powder, the kaolin at least a.
Described active nano material can be in titanium dioxide, silicon-dioxide, the lime carbonate any one.
The preparation technology who prepares a kind of modified hard polyvinyl chloride plastic pipe of the present invention, its step is in regular turn:
A, get weighting agent, lubricant, make reinforcing filler according to common process, standby;
B, get 1/3 the amount polyvinyl chloride resin, add reinforcing filler, acrylic resin, toughner, expanding material, stablizer, active nano material, PE resin, engineering plastics, stir, add remaining polyvinyl chloride resin again, mixer kneader under 100-110 ℃ temperature:
C, said mixture is cooled to 30-40 ℃;
D, said mixture inserted in the hypercone shape twin screw extruder adopts following processing parameter to make plastic pipe:
Die head compression ratio: S1: S2=1: S2=1: 10-36
Port mould diameter with die head straight portion length ratio is: D: L=1: 2-8
Barrel zone temperature: transportation section: 175-190 ℃
Compression section: 170-185 ℃
Melt zone: 170-190 ℃
Metering zone: 165-185 ℃
Merging core: 165-185 ℃
Head: 175-195 ℃
Mould: 190-210 ℃ in mouth.
The present invention has adopted scientific formula and has reasonably selected material, by adding multiple auxiliary agents such as PE resin, engineering plastics, active nano material, high-content weighting agent, toughner, weathering resistance, impact-resistance, tensile strength and the rigidity of the Vybak tubing of making are improved comprehensively, adopt reinforcing filler to fill, make it to form strong chemical bond or avidity, even under height filling situation.Also can guarantee higher physicals.Φ 110 * 3.2mm plastic pipe made from modified hard polyvinyl chloride plastic raw materials of the present invention is carried out the GB test, and the result is: notched Izod impact strength＞110Kj/m
2Test in the time of 0 ℃, the weight of dropping hammer 3kg, shock height 2m, 100% passes through, higher 6 times than the drop impact standard of the hard polyvinyl chloride pipe of GB GB/T5836.1-92, GB/T1992.1-96; Tensile strength＞52.9Mpa is better than the requirement of stretching yield stress salable product 40Mpa in this GB; Softening＞90 ℃ of dimension card is better than the requirement of 80-82 ℃ of this GB: 0 ℃ of burstpressures＞8.86Mpa, and what be better than 42Mpa in the GB GB/T1002.1-96 standard induces the 8.4Mpa requirement of ring stress (20 ℃), and in addition, ring stiffness, hardness also improve a lot.
For the ease of understanding and implementing, the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
Get lime carbonate 100kg, talcum powder 100kg, stearic acid 10kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 200kg, add acrylic resin 10kg, chlorinatedpolyethylene 9kg, paracril 9kg, acrylonitrile-butadiene-styrene copolymer 7kg, methacrylic acid-butadiene-styrene elastomer graft copolymer 40kg, organotin stabilizer 20kg, active nano material titanium dioxide 10kg, PE resin 100kg, exsiccant ABS 200kg and standby reinforcing filler stir, the polyvinyl chloride resin that adds 400kg again, mixer kneader under 100 ℃ temperature; Then, said mixture is cooled to 30 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 22
Port mould diameter with die head straight portion length ratio is: D: L=1: 2
Barrel zone temperature: transportation section: 190 ℃
Compression section: 185 ℃
Melt zone: 190 ℃
Metering zone: 185 ℃
Merging core: 165 ℃
Head: 175 ℃
Mouth mould: 210 ℃.
Embodiment 2
Get lime carbonate 159kg, paraffin 8kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 300kg, add acrylic resin 10kg, chlorinatedpolyethylene 11kg, acrylonitrile-butadiene-styrene copolymer 10kg, methacrylate butadi ene styrene copolymer 9kg, ethylene-acrylate copolymer 15kg, ethylene-vinyl acetate copolymer 15kg, monomer lead salt metal soap stabilisers 20kg, active nano material silica 1 2kg, PE resin 80kg, polycarbonate 25kg, polyoxymethylene 25kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 600kg again; Mixer kneader under 110 ℃ temperature; Then, said mixture is cooled to 35 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 10
Port mould diameter with die head straight portion length ratio is: D: L=1: 8
Barrel zone temperature: transportation section: 175 ℃
Compression section: 170 ℃
Melt zone: 170 ℃
Metering zone: 165 ℃
Merging core: 185 ℃
Head: 195 ℃
Mouth mould: 205 ℃.
Embodiment 3
Get lime carbonate 80kg, kaolin 65kg, polyethylene wax 5kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 250kg, add acrylic resin 50kg, paracril 25kg, methacrylic ester-butadiene-styrene copolymer 25kg, methacrylic acid-butadiene-styrene elastomer graft copolymers 10kg, ethylene-acrylate copolymer 10kg, EPDM10kg, maleic anhydride graft polyolefin copolymer 10kg, ethylene-vinyl acetate copolymer 10kg, rare-earth stabilizer 18kg, active nano material titanium dioxide 5kg, PE resin 150kg, polymeric amide 50kg and standby reinforcing filler, stir, add the 500kgPVC resin again; Mixer kneader under 110 ℃ temperature; Then, said mixture is cooled to 30 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 15
Port mould diameter with die head straight portion length ratio is: D: L=1: 4
Barrel zone temperature: transportation section: 190 ℃
Compression section: 180 ℃
Melt zone: 175 ℃
Metering zone: 170 ℃
Merging core: 170 ℃
Head: 185 ℃
Mouth mould: 195 ℃.
Embodiment 4
Get lime carbonate 110kg, talcum powder 100kg, kaolin 115kg, stearic acid 25kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 230kg, add acrylic resin 5kg, chlorinatedpolyethylene 35kg, paracril 45kg, acrylonitrile-butadiene-styrene copolymer 35kg, methacrylate butadi ene styrene copolymer 35kg, commodity EPDM 10kg, maleic anhydride graft polyolefin copolymer 10kg, ethylene-acrylate copolymer 5kg, compound lead stabilizer 45kg, active nano material lime carbonate 30kg, PE resin 200kg, ABS 30kg, polyoxymethylene 25kg, polymeric amide 25kg and standby reinforcing filler, stir, add the polyvinyl chloride resin of 470kg again; Temperature mixer kneader at 105 ℃; Then, said mixture is cooled to 40 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 36
Port mould diameter with die head straight portion length ratio is: D: L=1: 6
Barrel zone temperature: transportation section: 185 ℃
Compression section: 178 ℃
Melt zone: 175 ℃
Metering zone: 165 ℃
Merging core: 180 ℃
Head: 192 ℃
Mouth mould: 210 ℃.
Embodiment 5
Get lime carbonate 80kg, talcum powder 79kg, stearic acid 10kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 170kg, add acrylic resin 15kg, chlorinatedpolyethylene 30kg, methacrylic acid-butadiene-styrene elastomer graft copolymer 15kg, ethene-vinyl acetate polymers 15kg, organotin stabilizer 35kg, active nano material silica 1 2kg, PE resin 150kg, ABS 25kg, polycarbonate 25kg, polyoxymethylene 25kg, polymeric amide 25kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 33kg again; Temperature mixer kneader at 100 ℃; Then, said mixture is cooled to 35 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 30
Port mould diameter and die head straight portion length are: D: L=1: 5
Barrel zone temperature: transportation section: 188 ℃
Compression section: 185 ℃
Melt zone: 175 ℃
Metering zone: 165 ℃
Merging core: 170 ℃
Head: 185 ℃
Mouth mould: 200 ℃.
Embodiment 6
Get kaolin 100kg, paraffin 30kg carries out activation treatment according to common process, makes reinforcing filler, and is standby; Get polyvinyl chloride resin 260kg, add acrylic resin 40kg, fourth fat rubber 20kg, ethylene-acrylate copolymer 20kg, rare-earth stabilizer 50kg, active nano material lime carbonate 50kg, PE resin 300kg, polycarbonate 50kg, polyoxymethylene 50kg, polymeric amide 50kg and standby reinforcing filler stir, and add the polyvinyl chloride resin of 540kg again; Temperature mixer kneader at 110 ℃; Then, said mixture is cooled to 40 ℃; Said mixture is inserted extrusion moulding in the hypercone shape twin screw extruder, and processing parameter is:
Die head compression ratio: S1: S2=1: 18
Port mould diameter with die head straight portion length ratio is: D: L=1: 3
Barrel zone temperature: transportation section: 185 ℃
Compression section: 180 ℃
Melt zone: 175 ℃
Metering zone: 170 ℃
Merging core: 170 ℃
Head: 180 ℃
Mouth mould: 190 ℃.
In above-mentioned several embodiment, can also add tinting material (as ultramarine, titanium ultramarine, titanium dioxide, carbon black etc.) as one feels fit according to user's demand, be convenient to produce the plastic pipe of different colours.
Every indexs such as the rigidity of plastic pipe of the present invention, hardness and tensile strength all are greatly increased, after tested, its over-all properties is compared with the over-all properties of the Vybak tubing of common many kinds of toughner of PVC/ACR/ toughner, PVC/, PVC/ toughner/nano material and is improved a lot.
Claims (8)
1, a kind of modified hard polyvinyl chloride plastic pipe, it contains (by weight) polyvinyl chloride (PVC) RESINS 50-90 part, polyvinyl resin 8-30 part, acrylic resin 0.5-5 part, engineering plastics 5-20 part, toughner 2-15 part, expanding material 2-5 part, stablizer 1.8-5 part, lubricant 0.5-3 part, weighting agent 10-32.5 part, active nano material 0.5-5 part, wherein said toughner is chlorinatedpolyethylene, paracril, acrylonitrile-butadiene-styrene copolymer, methacrylate butadi ene styrene copolymer distance at least a, described expanding material is methacrylic acid-butadiene-styrene elastomer graft copolymer, ethylene-acrylate copolymer, terpolymer EP rubber, the maleic anhydride graft polyolefin copolymer, at least a in the ethylene-vinyl acetate copolymer, described active nano material is a titanium dioxide, silicon-dioxide, in the lime carbonate any one.
2, according to the described a kind of modified hard polyvinyl chloride plastic pipe of claim 1, it is characterized in that described components contents is (by weight) polyvinyl chloride (PVC) RESINS 60-80 part, polyvinyl resin 10-20 part, acrylic resin 1-4 part, engineering plastics 8-15 part, toughner 2.5-5 part, expanding material 2.5-4 part, stablizer 2-4.5 part, lubricant 0.8-2.5 part, weighting agent 14.5-20 part, active nano material 1-3 part.
3, according to the described a kind of modified hard polyvinyl chloride plastic pipe of claim 1, it is characterized in that described components contents is 50 parts of (by weight) polyvinyl chloride (PVC) RESINS, 15 parts of polyvinyl resins, 1.5 parts of acrylic resins, 10 parts in engineering plastics, 3 parts of toughner, 3 parts of expanding materials, 3.5 parts of stablizers, 1 part of lubricant, 15.9 parts of weighting agents, 1.2 parts of active nano materials.
According to the described a kind of modified hard polyvinyl chloride plastic pipe of claim 1, it is characterized in that 4, described engineering plastics are at least a in acrylonitrile-butadiene-styrene copolymer, polycarbonate, polyoxymethylene, the polymeric amide.
5, according to the described a kind of modified hard polyvinyl chloride plastic pipe of claim 1, it is characterized in that described stablizer is any one in organotin stabilizer, compound lead stabilizer, the rare-earth stabilizer.
6, according to the described a kind of modified hard polyvinyl chloride plastics material of claim 1, it is characterized in that described lubricant is any one in stearic acid, paraffin, the polyethylene wax.
7, according to claim 1 sharp a kind of modified hard polyvinyl chloride plastic pipe, it is characterized in that described weighting agent is at least a in lime carbonate, talcum powder, the kaolin.
8, according to the preparation technology of each modified hard polyvinyl chloride plastic pipe described in the claim 1-7, its step is in regular turn:
A, get weighting agent, lubricant, make reinforcing filler, standby according to common process;
B, get 1/3 the amount polyvinyl chloride (PVC) RESINS, add reinforcing filler, acrylic resin, toughner, expanding material, stablizer, active nano material, polyvinyl resin, engineering plastics, stir, add remaining polyvinyl chloride treeization again, mixer kneader under 100-110 ℃ temperature;
C, said mixture is cooled to 30-40 ℃;
D, said mixture inserted in the straight-tapered twin screw extruder adopts following processing parameter to make plastic pipe:
Die head compression ratio: S1: S2=1: 10-36
Port mould diameter with die head straight portion length ratio is: D: L=1: 2-8
Barrel zone temperature: transportation section: 175-190 ℃
Compression section: 170-185 ℃
Melt zone: 170-190 ℃
Metering zone: 195-185 ℃
Merging core: 165-185 ℃
Head: 175-195 ℃
Mould: 190-210 ℃ in mouth
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123968 CN1098307C (en) | 2000-10-26 | 2000-10-26 | Modified UPVC plastic pipe and its preparing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123968 CN1098307C (en) | 2000-10-26 | 2000-10-26 | Modified UPVC plastic pipe and its preparing process |
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| CN1304958A CN1304958A (en) | 2001-07-25 |
| CN1098307C true CN1098307C (en) | 2003-01-08 |
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| CN 00123968 Expired - Fee Related CN1098307C (en) | 2000-10-26 | 2000-10-26 | Modified UPVC plastic pipe and its preparing process |
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