CN104877254A - Chemical-corrosion-resistant PVC (polyvinyl chloride) tube and preparation method thereof - Google Patents
Chemical-corrosion-resistant PVC (polyvinyl chloride) tube and preparation method thereof Download PDFInfo
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- CN104877254A CN104877254A CN201510201409.4A CN201510201409A CN104877254A CN 104877254 A CN104877254 A CN 104877254A CN 201510201409 A CN201510201409 A CN 201510201409A CN 104877254 A CN104877254 A CN 104877254A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a chemical-corrosion-resistant PVC (polyvinyl chloride) tube and a preparation method thereof. The chemical-corrosion-resistant PVC tube is prepared from the following raw materials in parts by weight: 72-88 parts of SG-2 PVC, 18-24 parts of chlorinated polyether, 12-16 parts of pyrophyllite powder, 2-4 parts of beef tallow fatty acid, 14-18 parts of vinyl chloride-vinyl acetate copolymer, 1-2 parts of antimony n-butyl trithioglycolate, 0.5-1 part of calcium montanate, 2-3 parts of methyl 12-hydroxystearate, 10-15 parts of dicyclohexyl phthalate, 5-10 parts of tributyl oleoyl citrate, 10-15 parts of petroleum coke powder, 2-3 parts of triethyl tin chloride, 5-10 parts of silicon boride, 1-2 parts of diphenyl ketone 2-hydroxy-4-methoxy-5-sulfonate, 0.5-1 part of 2,4-di(n-octyl-sulfomethylene)-6-methylphenol and 3-5 parts of assistant. The PVC tube has the advantages of excellent corrosion resistance (especially for acids, alkalis and salts), favorable impact resistance, low friction factor, favorable heat resistance, favorable dimensional stability, aging resistance, high durability and the like, and is suitable for delivering corrosive media.
Description
Technical field
The present invention relates to a kind of PVC and preparation method thereof, be specifically related to a kind of resistance to chemical attack PVC and preparation method thereof.
Background technology
PVC is because having excellent chemical stability, and remarkable electrical insulating property and good flexibility and tint permanence, can be used for replacing rubber hose, polyvinyl piping materials, in order to carry liquid, also be used as cable shoe and cable insulating tube etc., apply very extensive.But along with the fast development of scientific and technological level, more and more high to the performance requriements of PVC.PVC in the market also exists the shortcoming of corrosion-resistant, and during long-term conveying resistant to corrosive media, the phenomenon of easy corrosion failure, greatly reduces its work-ing life.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of resistance to chemical attack PVC and preparation method thereof is provided, improve the chemical resistance of PVC, extend its work-ing life.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of resistance to chemical attack PVC, be made up of the raw material of following weight part: SG-2 type PVC 72-88, penton 18-24, pyrophyllite in powder 12-16, tallow fatty acid 2-4, vinyl chloride-vinyl acetate copolymer 14-18, tri-thiol n-butyl acetate antimony 1-2, montanic acid calcium 0.5-1, 12-methyl hydroxystearate 2-3, dicyclohexyl phthalate 10-15, oleoyl tributyl citrate 5-10, petroleum coke powder 10-15, ethyl tin monochloride 2-3, silicon boride 5-10, 2-hydroxyl-4-methoxybenzophenone-5-sulfonic acid 1-2, 2, 4-bis-(n-octylthiomethylene)-6-methylphenol 0.5-1, auxiliary agent 3-5,
The preparation method of described auxiliary agent is as follows: a, take off the raw material of row weight part: sorb smooth sweet oil acid esters 2-3, microencapsulation Flos Rosae Rugosae quintessence oil 0.5-1, nano-indium stannum oxide 3-5, molybdenum dialkyl-dithiophosphate 1-2, polyethylene glycol dimethacrylate 4-6, pure aluminium silicate 5-8, Di(dioctylpyrophosphato) ethylene titanate 1-2, diatomite in powder 3-5, Salicylanlide 1-2,2-Tert. Butyl Hydroquinone 0.5-1, trimethylolpropane tris (2-mercaptoacetate) 1-2; B, nano-indium stannum oxide, pure aluminium silicate, the smooth sweet oil acid esters of sorb, Di(dioctylpyrophosphato) ethylene titanate together to be dropped in homogenizer, 2000-3000rpm high-speed stirring 4-6min, then polyethylene glycol dimethacrylate, diatomite in powder, microencapsulation Flos Rosae Rugosae quintessence oil is added, 3500-4500rpm high-speed stirring 3-5min, finally add remaining raw material, 1000-1500rpm high-speed stirring 2-3min, is cooled to room temperature.
The preparation method of resistance to chemical attack PVC of the present invention, comprises the following steps:
(1) SG-2 type PVC, dicyclohexyl phthalate, pyrophyllite in powder, tallow fatty acid, silicon boride, montanic acid calcium are together dropped in homogenizer, 2000-3000rpm high-speed stirring to material temperature stops stirring when reaching 75-85 DEG C, be cooled to room temperature, obtain compound A;
(2) vinyl chloride-vinyl acetate copolymer, penton, petroleum coke powder, oleoyl tributyl citrate, 12-methyl hydroxystearate are together dropped in homogenizer, 1500-2500rpm high-speed stirring to material temperature stops stirring when reaching 60-70 DEG C, be cooled to room temperature, obtain compound B;
(3) compound A obtained above, compound B and remaining raw material are together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 90-100 DEG C; Then transport material in cold mixer and stir cooling, when temperature of charge is down to 35-45 DEG C, discharging;
(4) deliver in twin screw extruder by the compound that step (3) obtains, under 165-195 DEG C of processing temperature, tubing is made in extrusion moulding.
Beneficial effect of the present invention:
The PVC excellent anti-corrosion performance that the present invention obtains, the corrosion of special acid-and base-resisting, salt, have that good impact resistance, frictional coefficient are low simultaneously, good heat resistance, good stability of the dimension, the advantage such as ageing-resistant, durable in use, be suitable for the conveying of corrosive medium.
Embodiment
A kind of resistance to chemical attack PVC, be made up of the raw material of following weight (kg): SG-2 type PVC 84, penton 22, pyrophyllite in powder 14, tallow fatty acid 3, vinyl chloride-vinyl acetate copolymer 16, tri-thiol n-butyl acetate antimony 1.5, montanic acid calcium 0.8, 12-methyl hydroxystearate 2.5, dicyclohexyl phthalate 12, oleoyl tributyl citrate 8, petroleum coke powder 12, ethyl tin monochloride 2.5, silicon boride 7, 2-hydroxyl-4-methoxybenzophenone-5-sulfonic acid 1.5, 2, 4-bis-(n-octylthiomethylene)-6-methylphenol 0.8, auxiliary agent 4,
The preparation method of described auxiliary agent is as follows: a, take off the raw material of column weight amount (kg): the smooth sweet oil acid esters 2.5 of sorb, microencapsulation Flos Rosae Rugosae quintessence oil 0.8, nano-indium stannum oxide 4.5, molybdenum dialkyl-dithiophosphate 1.5, polyethylene glycol dimethacrylate 5, pure aluminium silicate 6, Di(dioctylpyrophosphato) ethylene titanate 1.5, diatomite in powder 4, Salicylanlide 1.5,2-Tert. Butyl Hydroquinone 0.8, trimethylolpropane tris (2-mercaptoacetate) 1.5; B, nano-indium stannum oxide, pure aluminium silicate, the smooth sweet oil acid esters of sorb, Di(dioctylpyrophosphato) ethylene titanate together to be dropped in homogenizer, 2500rpm high-speed stirring 5min, then polyethylene glycol dimethacrylate, diatomite in powder, microencapsulation Flos Rosae Rugosae quintessence oil is added, 4000rpm high-speed stirring 4min, finally add remaining raw material, 1500rpm high-speed stirring 2min, is cooled to room temperature.
The preparation method of resistance to chemical attack PVC, comprises the following steps:
(1) SG-2 type PVC, dicyclohexyl phthalate, pyrophyllite in powder, tallow fatty acid, silicon boride, montanic acid calcium are together dropped in homogenizer, 2000-3000rpm high-speed stirring to material temperature stops stirring when reaching 75-85 DEG C, be cooled to room temperature, obtain compound A;
(2) vinyl chloride-vinyl acetate copolymer, penton, petroleum coke powder, oleoyl tributyl citrate, 12-methyl hydroxystearate are together dropped in homogenizer, 1500-2500rpm high-speed stirring to material temperature stops stirring when reaching 60-70 DEG C, be cooled to room temperature, obtain compound B;
(3) compound A obtained above, compound B and remaining raw material are together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 90-100 DEG C; Then transport material in cold mixer and stir cooling, when temperature of charge is down to 35-45 DEG C, discharging;
(4) deliver in twin screw extruder by the compound that step (3) obtains, under 165-195 DEG C of processing temperature, tubing is made in extrusion moulding.
Above-mentioned obtained PVC Performance Detection is as shown in the table:
| Test item | Detected result |
| Tensile strength (MPa) | 68 |
| Yield strength (MPa) | 56 |
| Modulus in tension (MPa) | 4542 |
| Bending elastic modulus (GPa) | 3.4 |
| Longitudinal welds (%) | 1.6 |
| Aging coefficient (70 DEG C, 144h) | 0.78 |
| Acid resistance test (10% hydrochloric acid, 60 DEG C, 48h) | Corrosion-free phenomenon |
| Alkali resistance test (40% sodium hydroxide, 60 DEG C, 48h) | Corrosion-free phenomenon |
| Salt tolerance (50% sodium-chlor, 60 DEG C, 48h) | Corrosion-free phenomenon |
Claims (2)
1. a resistance to chemical attack PVC, it is characterized in that, be made up of the raw material of following weight part: SG-2 type PVC 72-88, penton 18-24, pyrophyllite in powder 12-16, tallow fatty acid 2-4, vinyl chloride-vinyl acetate copolymer 14-18, tri-thiol n-butyl acetate antimony 1-2, montanic acid calcium 0.5-1, 12-methyl hydroxystearate 2-3, dicyclohexyl phthalate 10-15, oleoyl tributyl citrate 5-10, petroleum coke powder 10-15, ethyl tin monochloride 2-3, silicon boride 5-10, 2-hydroxyl-4-methoxybenzophenone-5-sulfonic acid 1-2, 2, 4-bis-(n-octylthiomethylene)-6-methylphenol 0.5-1, auxiliary agent 3-5,
The preparation method of described auxiliary agent is as follows: a, take off the raw material of row weight part: sorb smooth sweet oil acid esters 2-3, microencapsulation Flos Rosae Rugosae quintessence oil 0.5-1, nano-indium stannum oxide 3-5, molybdenum dialkyl-dithiophosphate 1-2, polyethylene glycol dimethacrylate 4-6, pure aluminium silicate 5-8, Di(dioctylpyrophosphato) ethylene titanate 1-2, diatomite in powder 3-5, Salicylanlide 1-2,2-Tert. Butyl Hydroquinone 0.5-1, trimethylolpropane tris (2-mercaptoacetate) 1-2; B, nano-indium stannum oxide, pure aluminium silicate, the smooth sweet oil acid esters of sorb, Di(dioctylpyrophosphato) ethylene titanate together to be dropped in homogenizer, 2000-3000rpm high-speed stirring 4-6min, then polyethylene glycol dimethacrylate, diatomite in powder, microencapsulation Flos Rosae Rugosae quintessence oil is added, 3500-4500rpm high-speed stirring 3-5min, finally add remaining raw material, 1000-1500rpm high-speed stirring 2-3min, is cooled to room temperature.
2. a preparation method for resistance to chemical attack PVC as claimed in claim 1, is characterized in that comprising the following steps:
(1) SG-2 type PVC, dicyclohexyl phthalate, pyrophyllite in powder, tallow fatty acid, silicon boride, montanic acid calcium are together dropped in homogenizer, 2000-3000rpm high-speed stirring to material temperature stops stirring when reaching 75-85 DEG C, be cooled to room temperature, obtain compound A;
(2) vinyl chloride-vinyl acetate copolymer, penton, petroleum coke powder, oleoyl tributyl citrate, 12-methyl hydroxystearate are together dropped in homogenizer, 1500-2500rpm high-speed stirring to material temperature stops stirring when reaching 60-70 DEG C, be cooled to room temperature, obtain compound B;
(3) compound A obtained above, compound B and remaining raw material are together dropped in homogenizer, stop stirring when 2500-3500rpm high-speed stirring to material temperature reaches 90-100 DEG C; Then transport material in cold mixer and stir cooling, when temperature of charge is down to 35-45 DEG C, discharging;
(4) deliver in twin screw extruder by the compound that step (3) obtains, under 165-195 DEG C of processing temperature, tubing is made in extrusion moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201409.4A CN104877254A (en) | 2015-04-27 | 2015-04-27 | Chemical-corrosion-resistant PVC (polyvinyl chloride) tube and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201409.4A CN104877254A (en) | 2015-04-27 | 2015-04-27 | Chemical-corrosion-resistant PVC (polyvinyl chloride) tube and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104877254A true CN104877254A (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510201409.4A Pending CN104877254A (en) | 2015-04-27 | 2015-04-27 | Chemical-corrosion-resistant PVC (polyvinyl chloride) tube and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863711A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Heat-resisting PVC high impact-resisting tubular product and preparation method thereof |
| CN102952355A (en) * | 2012-10-19 | 2013-03-06 | 江苏晨电太阳能光电科技有限公司 | Polyvinyl chloride pipe resistant to heat, oil, acid and alkali and method for preparing same |
| CN103265777A (en) * | 2013-06-13 | 2013-08-28 | 苏州新区华士达工程塑胶有限公司 | Polyvinyl chloride (PVC) hard modified plastic |
-
2015
- 2015-04-27 CN CN201510201409.4A patent/CN104877254A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863711A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Heat-resisting PVC high impact-resisting tubular product and preparation method thereof |
| CN102952355A (en) * | 2012-10-19 | 2013-03-06 | 江苏晨电太阳能光电科技有限公司 | Polyvinyl chloride pipe resistant to heat, oil, acid and alkali and method for preparing same |
| CN103265777A (en) * | 2013-06-13 | 2013-08-28 | 苏州新区华士达工程塑胶有限公司 | Polyvinyl chloride (PVC) hard modified plastic |
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Application publication date: 20150902 |