CN114672111B - 一种高强度防爆耐磨pvc复合管材的生产工艺 - Google Patents
一种高强度防爆耐磨pvc复合管材的生产工艺 Download PDFInfo
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- CN114672111B CN114672111B CN202210472105.1A CN202210472105A CN114672111B CN 114672111 B CN114672111 B CN 114672111B CN 202210472105 A CN202210472105 A CN 202210472105A CN 114672111 B CN114672111 B CN 114672111B
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- composite pipe
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 19
- -1 perfluorohexylethyl alcohol Chemical compound 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 11
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005469 granulation Methods 0.000 claims abstract description 6
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- 238000001125 extrusion Methods 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 26
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 12
- 229910021389 graphene Inorganic materials 0.000 claims description 12
- 239000002105 nanoparticle Substances 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 8
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 7
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 6
- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 claims description 5
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 claims description 5
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229960002684 aminocaproic acid Drugs 0.000 claims description 5
- RNSLCHIAOHUARI-UHFFFAOYSA-N butane-1,4-diol;hexanedioic acid Chemical compound OCCCCO.OC(=O)CCCCC(O)=O RNSLCHIAOHUARI-UHFFFAOYSA-N 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical group [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 3
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims 1
- 229940035437 1,3-propanediol Drugs 0.000 claims 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims 1
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 33
- 239000004800 polyvinyl chloride Substances 0.000 description 32
- 239000002994 raw material Substances 0.000 description 15
- 235000019441 ethanol Nutrition 0.000 description 12
- 239000000523 sample Substances 0.000 description 9
- 238000007792 addition Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical group [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- FBYUNLMTXMFAQK-UHFFFAOYSA-N butyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCCCC.CCCCCCCCCCCC(=O)OCCCC FBYUNLMTXMFAQK-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UDVRROYKHLBOPZ-UHFFFAOYSA-N 3,3-dihydroxy-2-methylpropanoic acid Chemical compound OC(O)C(C)C(O)=O UDVRROYKHLBOPZ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920000616 Poly(1,4-butylene adipate) Polymers 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
实施例4 | 实施例5 | 实施例6 | 对比例1 | 对比例2 | |
<![CDATA[低温冲击强度/KJ/m<sup>-2</sup>]]> | 28.6 | 28.7 | 28.7 | 24.2 | 26.1 |
脆性温度/℃ | 48.8 | 48.9 | 48.9 | 38.1 | 42.5 |
维卡软化点 | 101 | 102 | 101 | 91 | 87 |
Claims (8)
Priority Applications (1)
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CN202210472105.1A CN114672111B (zh) | 2022-04-29 | 2022-04-29 | 一种高强度防爆耐磨pvc复合管材的生产工艺 |
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CN202210472105.1A CN114672111B (zh) | 2022-04-29 | 2022-04-29 | 一种高强度防爆耐磨pvc复合管材的生产工艺 |
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CN114672111B true CN114672111B (zh) | 2023-04-07 |
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CN116285349A (zh) * | 2023-04-12 | 2023-06-23 | 安徽九牛塑业科技有限公司 | 一种耐热收缩塑料薄膜及其制备方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102391591A (zh) * | 2011-07-28 | 2012-03-28 | 联塑市政管道(河北)有限公司 | 一种聚氯乙烯电力护套管及其加工方法 |
WO2017202337A1 (zh) * | 2016-05-24 | 2017-11-30 | 山东日科化学股份有限公司 | 聚氯乙烯低温增韧改性剂及含有该低温增韧改性剂的聚氯乙烯复合料 |
CN110563890A (zh) * | 2019-09-09 | 2019-12-13 | 济南大学 | 一种含超支化结构聚降冰片烯的制备及其应用 |
CN110577711A (zh) * | 2019-10-14 | 2019-12-17 | 上海瑞皇管业科技股份有限公司 | 一种提高韧性与抗冲击性的聚氯乙烯复合管及其制备方法 |
CN111234416A (zh) * | 2020-03-10 | 2020-06-05 | 山东东宏管业股份有限公司 | 一种煤矿用pvc-o管材及其制备方法 |
CN112831138A (zh) * | 2021-01-29 | 2021-05-25 | 杭州波达塑料科技股份有限公司 | 一种环保型硬聚氯乙烯双壁波纹管材及其生产工艺 |
CN114106683A (zh) * | 2021-12-01 | 2022-03-01 | 安徽瑞联节能科技股份有限公司 | 一种防水保温一体化材料及其生产工艺 |
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2022
- 2022-04-29 CN CN202210472105.1A patent/CN114672111B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102391591A (zh) * | 2011-07-28 | 2012-03-28 | 联塑市政管道(河北)有限公司 | 一种聚氯乙烯电力护套管及其加工方法 |
WO2017202337A1 (zh) * | 2016-05-24 | 2017-11-30 | 山东日科化学股份有限公司 | 聚氯乙烯低温增韧改性剂及含有该低温增韧改性剂的聚氯乙烯复合料 |
CN110563890A (zh) * | 2019-09-09 | 2019-12-13 | 济南大学 | 一种含超支化结构聚降冰片烯的制备及其应用 |
CN110577711A (zh) * | 2019-10-14 | 2019-12-17 | 上海瑞皇管业科技股份有限公司 | 一种提高韧性与抗冲击性的聚氯乙烯复合管及其制备方法 |
CN111234416A (zh) * | 2020-03-10 | 2020-06-05 | 山东东宏管业股份有限公司 | 一种煤矿用pvc-o管材及其制备方法 |
CN112831138A (zh) * | 2021-01-29 | 2021-05-25 | 杭州波达塑料科技股份有限公司 | 一种环保型硬聚氯乙烯双壁波纹管材及其生产工艺 |
CN114106683A (zh) * | 2021-12-01 | 2022-03-01 | 安徽瑞联节能科技股份有限公司 | 一种防水保温一体化材料及其生产工艺 |
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Denomination of invention: Production process of a high-strength explosion-proof and wear-resistant PVC composite pipe Effective date of registration: 20231012 Granted publication date: 20230407 Pledgee: Fuyang Zhejiang rural commercial bank Limited by Share Ltd. the Fuchun River branch Pledgor: Hangzhou Taide electromechanical Co.,Ltd. Registration number: Y2023980060730 |
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Granted publication date: 20230407 Pledgee: Fuyang Zhejiang rural commercial bank Limited by Share Ltd. the Fuchun River branch Pledgor: Hangzhou Taide electromechanical Co.,Ltd. Registration number: Y2023980060730 |