CN1133695C - Polyvinyl chloride composition and its pipes - Google Patents
Polyvinyl chloride composition and its pipes Download PDFInfo
- Publication number
- CN1133695C CN1133695C CNB991196562A CN99119656A CN1133695C CN 1133695 C CN1133695 C CN 1133695C CN B991196562 A CNB991196562 A CN B991196562A CN 99119656 A CN99119656 A CN 99119656A CN 1133695 C CN1133695 C CN 1133695C
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- polyvinyl chloride
- polychloroethylene pipes
- stabilizer
- tubing
- stablizer
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a polyvinyl chloride resin composition and a pipe material thereof. Polyvinyl chloride, a plasticizer, an impact modifier and a heat stabilizer are mixed according to a proper proportion, and a proper amount of auxiliary agents (such as a light stabilizer, a lubricating agent, a coloring agent, etc.) are added to prepare the composition. The composition can be adopted to thin the wall of the pipe material by melting and extrusion. The thickness of the pipe material is between 0.1 to 10mm. The pipe material has the advantages of excellent cold resistance and excellent durability, and is suitable for various water transportation pipelines of a water saving irrigation system.
Description
The present invention relates to a kind of polyvinyl chloride of modification, specially refer to polyvinyl chloride and tubing and preparation method with excellent cold-resistant and ageing resistance, this tubing is applicable to the various low-pressure delivery pipes that agricultural water-saving irrigation system is required.
At present, China water resources lacks, in the north and the Northwest more very.According to statistics, China's water total amount over half is used for agricultural irrigation.Adopt traditional big canal irrigation to irrigate, because the loss that channel infiltration and the evaporation of irrigation field are caused reaches 75% of irrigation water.Therefore, water saving should be started with from agricultural, starts with from changing irrigation method.In recent years, China has adopted the method for sprinkling irrigation in many places, introduced external drip irrigation and infiltration irrigation technology simultaneously.The patent of relevant agricultural water-saving irrigation aspect is also more and more, as patent of invention CN98124544.7 (a kind of trickle irrigation equipment) and CN98124543.9 (a kind of anti-clogging plug infiltration is irrigated and device) etc. water saving fixtures are reported, but but very few to the patent report of the essential plastic pipe that uses in the water-saving irrigation system.
Polyvinyl chloride is widely used in making various soft or hard tubing, also being used in water saving irrigation more.But existing polyvinyl chloride water saving irrigation tubing, winter hardiness is poor, is easy to fragmentation; Ageing resistance is poor, and duration of service is short.
The objective of the invention is to overcome the shortcoming of polychloroethylene pipes winter hardiness and ageing resistance difference in the prior art, a kind of polychloroethylene composition is provided, said composition has isostatic rigidity and impact property, has good processibility simultaneously, can make the thin-walled polychloroethylene pipes of use properties excellence, this tubing is applicable to various pipelines required in the water-saving irrigation system.
The invention provides a kind of polychloroethylene pipes composition, said composition tubing comprises following component and content (parts by weight): 100 parts of polyvinyl chloride; Softening agent 5-50 part; Impact modifying agent 1-30 part; Thermo-stabilizer 0.3-10 part; Photostabilizer 0.05-3 part; Lubricant 0.1-2 part; Other auxiliary agent is as interpolations in right amount as required such as tinting materials.
The polymerization degree of polyvinyl chloride is about 800-1700 in the present composition, and the consumption in composition is 100 parts.
Softening agent in the present composition comprises common softening agent such as phthalic ester series, sebate series, adipic acid ester series, as dioctyl phthalate (DOP) (DOP), dibutyl phthalate (DBP), Dinonylphthalate (DNP), dioctyl sebacate (DOS), Octyl adipate (DOA) etc., also comprise phosphoric acid ester and epoxy plasticiser simultaneously.Above-mentioned softening agent can use separately, also can use jointly by two or more softening agent, and in composition, total consumption of softening agent is 5-50 part, and when being lower than 5 parts, polyvinyl chloride can not get plasticization effect; Be higher than 50 parts, resulting composition does not possess enough rigidity.When the polymerization degree of used polyvinyl chloride was low, plasticizer dosage was few; When the polymerization degree of used polyvinyl chloride was higher, plasticizer dosage was more.
Impact modifying agent in the present composition comprises MBS (MBS), chlorinatedpolyethylene (CPE), paracril (NBR), acrylic elastomer (ACR) etc., can use separately or jointly.In composition, its consumption is 1-30 part.
Thermo-stabilizer in the present composition comprises lead salts stablizer, metallic soap class stablizer, organic tin stablizer, phosphite ester stabilizer and epoxy compounds.Typical lead salts stablizer has tribasic lead sulfate (three salt), dibasic lead phosphite (disalt), dibasic lead phthalate, lead stearate etc.; Metallic soap class stablizer has calcium stearate, Zinic stearas, cadmium stearate, barium stearate etc., also comprises the mixture of two or three metallic soap simultaneously, as barium/cadmium/zinc stabilizer, calcium/zinc stabilizer etc.; The organic tin stablizer has dibutyl tin laurate (capital tin C-101), two maleic mono octyl ester di-n-butyltin dilaurates (capital tin LM-103), two (the different monooctyl ester of sulfo-glycolic acid) dioctyltins (capital tin 8831) etc., the mixture that comprises these materials and other kind stablizer simultaneously is as mixture (capital tin C-102) of capital tin C-101 and epoxies stablizer etc.These stablizers can use separately, also can compoundly use.In composition, the consumption of thermo-stabilizer is 0.3-10 part.
Photostabilizer in the present composition, comprise 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole (UVA-6), 2 benzotriazole-2-base-4,6-DI-tert-butylphenol compounds (UVA-7), Octabenzone (UV-531), 2-hydroxyl-4-methoxy benzophenone benzotriazole category ultraviolet absorbers and benzophenone ultraviolet absorbers such as (UVA-9).In composition, its consumption is 0.05-3 part.
Lubricant in the present composition comprises calcium stearate, Zinic stearas, stearic acid, paraffin, clorafin, polyethylene wax, chlorinatedpolyethylene wax etc., can independent or compound use.In composition, its consumption is 0.1-2 part.
In the present composition, can also suitably add auxiliary agents such as tinting material, static inhibitor as requested.
The invention provides a kind of manufacture method of tubing of polychloroethylene pipes composition, be about to 100 parts of polyvinyl chloride, softening agent 5-50 part, impact modifying agent 1-30 part, thermo-stabilizer 0.3-10 part, photostabilizer 0.05-3 part, lubricant 0.1-2 part places super mixer to mix, when temperature of charge reaches 80-100 ℃, stop to mix.Then the material that mixes is added melt mixing equipment forcing machine (single screw extrusion machine, twin screw extruder, double roll mill etc.) and mix, this composition is made the thin-wall pipes that wall thickness is 0.1-10mm through extrusion moulding.Melt temperature is 140-200 ℃, and the extrusion moulding temperature is 160-200 ℃.This composition tubing is applicable to the low-pressure delivery pipe of water-saving irrigation system.
Explain the present invention below by embodiment, but technical scope of the present invention is not limited only to following embodiment.
Embodiment 1
In the polyvinyl chloride (PVC) RESINS (polymerization degree is 800) of 100 weight parts, add plasticizer DOP, 10 parts of CPE, 1 part of ACR-201,2.5 part of three salt, 2.5 parts of disalts, 0.3 part of UV-531,0.3 part of paraffin, 0.2 part of polyvinyl chloride wax of 5 parts.These materials are added in the super mixer, be stirred to 85 ℃.The material that mixes under 140-180 ℃ temperature, melt extrude on the single screw extrusion machine, the water-cooled granulation.After the pellet oven dry, be 12mm extrude diameter on the pipe extruder under 140-175 ℃, wall thickness is the tubing of 0.2mm.Tubing is extruded smoothly, smooth surface.
Embodiment 2
In the polyvinyl chloride (PVC) RESINS (polymerization degree is 1000) of 100 weight parts, add plasticizer DOP, 10 parts of MBS, 1 part of ACR-201,2.5 parts of barium/cadmium/zinc composite stabilizers, 0.3 part of UV-6,0.3 part of paraffin, 0.2 part of chlorinatedpolyethylene wax of 10 parts.These materials are added in the super mixer, be stirred to 80 ℃.The material that mixes is 200mm extruding diameter on the pipe extruder under 140-195 ℃ of temperature, and wall thickness is the tubing of 10mm.Tubing is extruded smoothly, smooth surface.
Embodiment 3
In the polyvinyl chloride (PVC) RESINS (polymerization degree is 1300) of 100 parts of weight parts, add 10 parts of DOS, 10 parts of DOP, 10 parts of CPE, 1 part of ACR-201,0.4 part of capital tin C-102,0.3 part of UV-531,0.3 part of paraffin, 0.2 part of chlorinatedpolyethylene wax.These materials are added in the super mixer, be stirred to 95 ℃.The material that mixes is melt extruding under 140-190 ℃ temperature on the single screw extrusion machine, the water-cooled granulation.After the pellet oven dry, under 140-185 ℃ temperature, extruding diameter 40mm, the tubing of wall thickness 2mm on the pipe extruder.Tubing is extruded smoothly, smooth surface.Embodiment 4
In the polyvinyl chloride (PVC) RESINS (polymerization degree is 1700) of 100 weight parts, add plasticizer DOP, 25 parts of NBR, 1 part of ACR-201,2.5 parts of calcium/zinc composite stabilizers, 0.3 part of UV-6,0.3 part of paraffin, 0.2 part of chlorinatedpolyethylene wax of 30 parts.These materials are added in the super mixer, be stirred to 100 ℃.The material that mixes is 100mm extrude diameter on the pipe extruder under 140-195 ℃ temperature, and wall thickness is the tubing of 5mm.Tubing is extruded smoothly, smooth surface.
Claims (9)
1. a polychloroethylene pipes composition is characterized in that, described composition comprises following component and content (parts by weight):
100 parts of polyvinyl chloride, the polymerization degree of described polyvinyl chloride are 800-1700,
Softening agent 5-50 part,
Impact modifying agent 1-30 part, described impact modifying agent are one or more in MBS, paracril, the acrylic elastomer,
Thermo-stabilizer 0.3-10 part,
Photostabilizer 0.05-3 part, said photostabilizer is 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, 2 benzotriazole-2-base-4, a kind of in 6-DI-tert-butylphenol compounds, Octabenzone, the 2-hydroxyl-4-methoxy benzophenone ultraviolet absorbers
Lubricant 0.1-2 part.
2. a kind of polychloroethylene pipes composition according to claim 1 is characterized in that, described softening agent is one or more in phthalic ester series, sebate series, adipic acid ester series, phosphoric acid ester and the epoxy plasticiser.
3. a kind of polychloroethylene pipes composition according to claim 1 is characterized in that, described thermo-stabilizer is one or more in lead salts stablizer, metallic soap class stablizer, organic tin stablizer, phosphite ester stabilizer and the epoxy compounds.
4. a kind of polychloroethylene pipes composition according to claim 1 is characterized in that, described lubricant is one or more in calcium stearate, Zinic stearas, stearic acid, paraffin, clorafin, polyethylene wax, the chlorinatedpolyethylene wax.
5. the manufacture method of the tubing of a polychloroethylene pipes composition is characterized in that,
1) with 100 parts of polyvinyl chloride, parts by weight, the polymerization degree of described polyvinyl chloride is 800-1700, softening agent 5-50 part,
Impact modifying agent, 1-30 part, described impact modifying agent is one or more in MBS, paracril, the acrylic elastomer,
Thermo-stabilizer 0.3-10 part,
Photostabilizer 0.05-3 part, said photostabilizer is 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, 2 benzotriazole-2-base-4,6-DI-tert-butylphenol compounds, a kind of in Octabenzone, the 2-hydroxyl-4-methoxy benzophenone ultraviolet absorbers
Lubricant 0.1-2 part,
Place super mixer to mix, temperature of charge stops when reaching g0-100 ℃ mixing;
2) material that mixes is put into forcing machine, under 140-200 ℃ temperature condition, make the material melting mixing even;
3) the uniform material of melting mixing is through forcing machine, and 160-200 ℃ of extrusion moulding, cooling and shaping makes tubing.
6. the manufacture method of the tubing of a kind of polychloroethylene pipes composition according to claim 5, it is characterized in that described softening agent is one or more in phthalic ester series, sebate series, adipic acid ester series, phosphoric acid ester and the epoxy plasticiser.
7. the manufacture method of the tubing of a kind of polychloroethylene pipes composition according to claim 5, it is characterized in that described thermo-stabilizer is one or more in lead salts stablizer, metallic soap class stablizer, organic tin stablizer, phosphite ester stabilizer and the epoxy compounds.
8. the manufacture method of the tubing of a kind of polychloroethylene pipes composition according to claim 5, it is characterized in that described lubricant is one or more in calcium stearate, Zinic stearas, stearic acid, paraffin, clorafin, polyethylene wax, the chlorinatedpolyethylene wax.
9. each polychloroethylene pipes composition among the claim 1-4 is used to make the polychloroethylene pipes of wall thickness 0.1-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991196562A CN1133695C (en) | 1999-09-24 | 1999-09-24 | Polyvinyl chloride composition and its pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991196562A CN1133695C (en) | 1999-09-24 | 1999-09-24 | Polyvinyl chloride composition and its pipes |
Publications (2)
| Publication Number | Publication Date |
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| CN1247209A CN1247209A (en) | 2000-03-15 |
| CN1133695C true CN1133695C (en) | 2004-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991196562A Expired - Fee Related CN1133695C (en) | 1999-09-24 | 1999-09-24 | Polyvinyl chloride composition and its pipes |
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1999
- 1999-09-24 CN CNB991196562A patent/CN1133695C/en not_active Expired - Fee Related
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| CN1247209A (en) | 2000-03-15 |
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