CN112223854A - 一种三层复合pvc/pex输水管及其制备方法 - Google Patents
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 83
- 239000000463 material Substances 0.000 claims abstract description 70
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 69
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 60
- 239000004698 Polyethylene Substances 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 36
- 239000004718 silane crosslinked polyethylene Substances 0.000 claims abstract description 36
- 229920000573 polyethylene Polymers 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 230000003197 catalytic effect Effects 0.000 claims abstract description 24
- -1 polyethylene Polymers 0.000 claims abstract description 24
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 16
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000077 silane Inorganic materials 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
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- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 7
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- 238000005469 granulation Methods 0.000 claims description 7
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- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 7
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 6
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 5
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 238000006555 catalytic reaction Methods 0.000 claims 2
- 239000010410 layer Substances 0.000 description 74
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
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- 229910052801 chlorine Inorganic materials 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
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- 229920006112 polar polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- 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
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Abstract
本发明涉及一种三层复合PVC/PEX输水管及其制备方法,其解决了由PVC与PE等材料共挤制备输水管存在粘接强度差的技术问题,本发明的输水管的内层为接枝A料、催化B料混匀得到硅烷交联聚乙烯(PEX)层,中间层为接枝A料、催化B料与聚氯乙烯(PVC)、相容剂充分剪切混匀得到的双连续相的海‑海结构层,外层是聚氯乙烯(PVC)层;接枝A料含有以下重量份数的原料:聚乙烯100份、硅烷交联剂0.1~10份、引发剂0.1~5份;催化B料含有以下重量份数的原料:聚乙烯100份、催化剂0.1~1份、抗氧剂0.01~0.1份。本发明同时提供了其制备方法。本发明可广泛应用于复合材料技术领域。
Description
技术领域
本发明涉及复合材料技术领域,具体地说是一种三层复合PVC/PEX输水管及其制备方法。
背景技术
PVC材料是当今世界上深受喜爱、颇为流行并且也被广泛应用的一种合成材料。它的全球使用量在各种合成材料中高居第二。据统计,仅仅1995年一年,PVC在欧洲的生产量就有五百万吨左右,而其消费量则为五百三十万吨。在德国,PVC的生产量和消费量平均为一百四十万吨。PVC可分为硬PVC和软PVC,其中软PVC中含有增塑剂且物理性能较差,使用过程中会有助剂析出,不能直接用于卫浴、饮用水管等输水管。交联聚乙烯(PEX)材料强度高且卫生性能好,将PVC与PE等材料共挤制备输水管可以满足安全卫生、成本低廉、强度高等要求。PVC分子链上含有极性原子氯,含量约56%,属于极性聚合物,而且极性很强;PE分子链上没有极性基团,属于非极性聚合物,根据相似相容原理,所以二者的相容性非常差,因此PVC和PE的界面粘接强度低,如何提高PVC和PE两层的粘接强度是保障此类产品性能的关键。
专利CN206608625中为了提高PVC和PE层的粘接强度,在PVC层和PE层之间加入双层中空网,PVC和PE在中空网中粘合成一个整体。此外,还有通过PCV/PE共混、加入相容剂、接枝改性等方式来改善PVC和PE相容性,但效果一般。PVC和PE相容性差的原因是PVC分子链极性很强,而PE分子链是非极性的,二者分子间作用力弱,界面易剥离。
发明内容
本发明就是为了解决上述背景技术的不足,提供了一种成本低、强度高、层间粘接强劲的三层复合PVC/PEX输水管及其制备方法。
为此,本发明提供了一种三层复合PVC/PEX输水管,内层为接枝A料、催化B料混匀得到硅烷交联聚乙烯(PEX)层,中间层为接枝A料、催化B料与聚氯乙烯(PVC)、相容剂充分剪切混匀得到的双连续相的海-海结构层,外层是聚氯乙烯(PVC)层;
接枝A料含有以下重量份数的原料:聚乙烯100份、硅烷交联剂0.1~10份、引发剂0.1~5份;
催化B料含有以下重量份数的原料:聚乙烯100份、催化剂0.1~1份、抗氧剂0.01~0.1份。
优选的,硅烷交联剂为乙烯基三甲氧基硅烷、乙烯基三乙氧基硅烷的一种或几种;引发剂为过氧化二异丙苯(DCP)、过氧化二叔丁基(DTBP)、2,5-二甲基-2,5-二(叔丁基过氧基)己烷、双叔丁基过氧化二异丙基苯(BIPB)中的一种或几种。
优选的,催化剂为二月桂酸二丁基锡、抗氧剂为抗氧剂168、抗氧剂1010中的一种或几种。
同时,本发明提供了一种三层复合PVC/PEX输水管的制备方法,具体包含以下步骤:
(1)接枝(硅烷交联聚乙烯)A料的制备:将相应份数的聚乙烯、硅烷交联剂、引发剂混匀后通过双螺杆挤出机接枝造粒,得到接枝A料;
(2)催化(硅烷交联聚乙烯)B料的制备:将相应份数的聚乙烯、催化剂、抗氧剂混匀后通过双螺杆挤出机挤出造粒,得到催化B料;
(3)三层复合PVC/PEX输水管的制备:以质量百分比计算,将接枝A料和催化B料按照95:5的比例混匀后加入内层挤出机,将接枝A料催化B料按照95:5的比例与聚氯乙烯(PVC)、相容剂混匀后加入中间层挤出机,将PVC加入外层挤出机,经复合共挤模头挤出,挤出后的管材经高温水蒸气蒸煮或自然放置1~3周,制得三层复合PVC/PEX输水管。
优选的,步骤(1)中双螺杆挤出机的挤出温度180~190℃,步骤(2)中双螺杆挤出机的挤出温度210~220℃。
优选的,步骤(3)中,中间层聚氯乙烯(PVC)与接枝A料的比例为(40:60)~(60:40)。
优选的,步骤(3)中,相容剂为马来酸酐接枝聚乙烯,所述马来酸酐接枝聚乙烯为0~5份。
优选的,步骤(3)中内层挤出机的挤出温度160~190℃,中间层挤出机的挤出温度155~180℃。
优选的,中间层挤出机为双螺杆挤出机。
本发明提供了一种三层复合PVC/PEX输水管及其制备方法,其突出的特点和优异的效果在于:
(1)本发明制备的三层复合PVC/PEX输水管,由外层、内层、中间层组成,内层为硅烷交联聚乙烯(PEX),其与被输送物质接触,满足饮用水、卫浴等卫生要求;外层聚氯乙烯(PVC)层对管材起到补强和降低成本的作用;中间层是硅烷交联聚乙烯(PEX)、聚氯乙烯(PVC)和相容剂按照适当的比例充分剪切混匀得到的双连续相的海-海结构层,将外层和内层紧密粘合在一起,形成一个整体。
(2)本发明的中间层为硅烷交联聚乙烯(PEX)、聚氯乙烯(PVC)和相容剂混匀利用双螺杆挤出机得到的双连续相的海-海结构层,这样组成与结构设计,优点一是硅烷接枝提高了硅烷交联聚乙烯(PEX)极性,使硅烷交联聚乙烯(PEX)和聚氯乙烯(PVC)具有良好的相容性;优点二是利用带有强剪切分散的双螺杆挤出机,使硅烷交联聚乙烯(PEX)和聚氯乙烯(PVC)形成的海-海结构的双连续相穿插,不易剥离;优点三是挤出后的中间层独特的结构中聚氯乙烯(PVC)C相与外层聚氯乙烯(PVC)层通过分子间作用力紧密相连,硅烷交联聚乙烯(PEX)相与内层硅烷交联聚乙烯(PEX)层通过硅烷交联形成的交联键紧密结合,极大提高了三层之间的粘接强度。
具体实施方式
根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的内容仅用于说明本发明,而不应当也不会限制权利要求书中所描述的本发明。
实施例1
(1)接枝(硅烷交联聚乙烯)A料的制备:将聚乙烯100份、乙烯基三甲氧基硅烷7份、过氧化二异丙苯2.3份混匀后通过双螺杆挤出机接枝造粒,挤出温度为180℃,得到接枝A料。
(2)催化(硅烷交联聚乙烯)B料的制备:将聚乙烯100份、二月桂酸二丁基锡0.8份、抗氧剂168 0.05份、抗氧剂1010 0.05份,混匀后通过双螺杆挤出机挤出造粒,挤出温度为210℃,得到催化B料。
(3)三层复合PVC/PEX输水管的制备:将接枝A料与催化B料按95:5比例混匀,作为硅烷交联聚乙烯(PEX)组分备用,硅烷交联聚乙烯(PEX)组分加入内层挤出机,设置挤出温度为160℃;将硅烷交联聚乙烯(PEX)组分与聚氯乙烯(PVC)组分按40:60的比例混合,与3.5份马来酸酐接枝聚乙烯加入中间层挤出机,设置挤出温度为155℃;聚氯乙烯(PVC)组分加入外层挤出机。通过三层共挤模头挤出成型,挤出后的管材经高温水蒸气得到三层复合PVC/PEX输水管(内径×外径:8×10.8mm),90℃水煮8h使其交联。
实施例2
(1)接枝(硅烷交联聚乙烯)A料的制备:将聚乙烯100份、乙烯基三乙氧基硅烷5份、过氧化二叔丁基1.8份混匀后通过双螺杆挤出机接枝造粒,挤出温度为190℃,得到接枝A料。
(2)催化(硅烷交联聚乙烯)B料的制备:将聚乙烯100份、二月桂酸二丁基锡0.7份、抗氧剂168 0.05份、抗氧剂1010 0.05份,混匀后通过双螺杆挤出机挤出造粒,挤出温度为220℃,得到催化B料。
(3)三层复合PVC/PEX输水管的制备:将接枝A料与催化B料按95:5比例混匀,作为硅烷交联聚乙烯(PEX)组分备用,硅烷交联聚乙烯(PEX)组分加入内层挤出机,设置挤出温度为190℃;将硅烷交联聚乙烯(PEX)组分与聚氯乙烯(PVC)组分按50:50的比例混合,与5份马来酸酐接枝聚乙烯混匀,加入中间层挤出机,设置挤出温度为180℃;聚氯乙烯(PVC)加入外层挤出机。通过三层共挤模头挤出成型,挤出后的管材自然放置1周,得到三层复合PVC/PEX输水管(内径×外径:8×10.8mm),90℃水煮8h使其交联。
实施例3
(1)接枝(硅烷交联聚乙烯)A料的制备:将聚乙烯100份、乙烯基三甲氧基硅烷7份、双叔丁基过氧化二异丙基苯2.3份混匀后通过双螺杆挤出机接枝造粒,挤出温度为185℃,得到接枝A料。
(2)催化(硅烷交联聚乙烯)B料的制备:将聚乙烯100份、二月桂酸二丁基锡0.8份、抗氧剂168 0.05份、抗氧剂1010 0.05份,混匀后通过双螺杆挤出机挤出造粒,挤出温度为215℃,得到催化B料。
(3)三层复合PVC/PEX输水管的制备:将接枝A料与催化B料按95:5比例混匀,作为硅烷交联聚乙烯(PEX)组分备用,硅烷交联聚乙烯(PEX)组分加入内层挤出机,设置挤出温度为175℃;将硅烷交联聚乙烯(PEX)组分与聚氯乙烯(PVC)按60:40的比例混合,与4份马来酸酐接枝聚乙烯混匀,加入中间层挤出机,设置挤出温度为170℃;聚氯乙烯(PVC)加入外层挤出机。通过三层共挤模头挤出成型,挤出后的管材自然放置3周,得到三层复合PVC/PEX输水管(内径×外径:8×10.8mm),90℃水煮8h使其交联。
对比例1
(1)接枝(硅烷交联聚乙烯)A料的制备:将聚乙烯100份、乙烯基三甲氧基硅烷7份、过氧化二异丙苯2.3份混匀后通过双螺杆挤出机接枝造粒,挤出温度为185℃,得到接枝A料。
(2)催化(交联聚乙烯)B料的制备:将聚乙烯100份、二月桂酸二丁基锡0.8份、抗氧剂168 0.05份、抗氧剂1010 0.05份,混匀后通过双螺杆挤出机挤出造粒,挤出温度为215℃,得到催化B料。
(3)普通PVC/PEX复合管的制备:将接枝A料与催化B料按95:5比例混匀,作为硅烷交联聚乙烯(PEX)组分备用,硅烷交联聚乙烯(PEX)组分加入内层挤出机,设置挤出温度为165℃;将聚乙烯(PE)层,加入中间层挤出机,设置挤出温度为175℃;聚氯乙烯(PVC)组分加入外层挤出机。通过三层共挤模头挤出成型,得到普通PVC/PEX复合管(内径×外径:8×10.8mm),90℃水煮8h使其交联。
对比例2
(1)接枝(硅烷交联聚乙烯)A料的制备:将聚乙烯100份、乙烯基三甲氧基硅烷7份、过氧化二异丙苯2.3份混匀后通过双螺杆挤出机接枝造粒,挤出温度为185℃,得到接枝A料。
(2)催化(硅烷交联聚乙烯)B料的制备:将聚乙烯100份、二月桂酸二丁基锡0.8份、抗氧剂168 0.05份、抗氧剂1010 0.05份,混匀后通过双螺杆挤出机挤出造粒,挤出温度为215℃,得到催化B料。
(3)硅烷交联聚乙烯(PEX)输水管的制备:将接枝A料与催化B料按95:5比例混匀,通过挤出机挤出,设置挤出温度为165℃,得到PEX输水管(内径×外径:8×10.8mm),90℃水煮8h使其交联。
实施例1-3和对比例1-2制备的输水管各项性能测试结果数据表
对比例1 | 对比例2 | 实施例1 | 实施例2 | 实施例3 | |
尺寸(内径×外径,mm) | 8×10.8 | 8×10.8 | 8×10.8 | 8×10.8 | 8×10.8 |
PEX交联度(%) | 67.1 | 67.4 | 68.2 | 67.9 | 68.0 |
爆破压力(MPa) | 2.6 | 2.8 | 3.1 | 3.0 | 3.3 |
剥离强度(N/cm) | 2.7 | - | 5.1 | 5.8 | 6.0 |
实验结论:由上表数据可知,三层复合PVC/PEX输水管相较于PEX输水管,PEX交联度高、爆破压力大、剥离强度高,其中,剥离强度最高可达6.0N/cm。而且对比例1的中间层为PE交联得到的普通PVC/PEX复合管的剥离强度仅为2.7N/cm,明显低于三层复合PVC/PEX输水管的剥离强度,充分证明了三层复合PVC/PEX输水管中间层独特的结构中PVC相与外层PVC通过分子间作用力紧密相连,PEX相与内层PEX通过硅烷交联形成的交联键紧密结合,极大提高了三层之间的粘接强度。
以上所述为本发明示意性的具体实施方式,并非用以限定本发明的范围。其他的任何未背离本发明实质与原理下所作的改变、组合、修饰,均应为等效的置换方式,都包含在本发明的保护范围之内。
Claims (9)
1.一种三层复合PVC/PEX输水管,其特征是,其内层为接枝A料、催化B料混匀得到硅烷交联聚乙烯(PEX)层,中间层为接枝A料、催化B料与聚氯乙烯(PVC)、相容剂充分剪切混匀得到的双连续相的海-海结构层,外层是聚氯乙烯(PVC)层;
所述接枝A料含有以下重量份数的原料:聚乙烯100份、硅烷交联剂0.1~10份、引发剂0.1~5份;
所述催化B料含有以下重量份数的原料:聚乙烯100份、催化剂0.1~1份、抗氧剂0.01~0.1份。
2.根据权利要求1所述的三层复合PVC/PEX输水管,其特征在于,所述硅烷交联剂为乙烯基三甲氧基硅烷、乙烯基三乙氧基硅烷的一种或几种;所述引发剂为过氧化二异丙苯(DCP)、过氧化二叔丁基(DTBP)、2,5-二甲基-2,5-二(叔丁基过氧基)己烷、双叔丁基过氧化二异丙基苯(BIPB)中的一种或几种。
3.根据权利要求1所述的三层复合PVC/PEX输水管,其特征在于,催化剂为二月桂酸二丁基锡,抗氧剂为抗氧剂168、抗氧剂1010中的一种或几种。
4.一种如权利要求1所述的三层复合PVC/PEX输水管的制备方法,其特征在于,包含以下步骤:
(1)接枝(硅烷交联聚乙烯)A料的制备:将相应份数的聚乙烯、硅烷交联剂、引发剂混匀后通过双螺杆挤出机接枝造粒,得到接枝A料;
(2)催化(硅烷交联聚乙烯)B料的制备:将相应份数的聚乙烯、催化剂、抗氧剂混匀后通过双螺杆挤出机挤出造粒,得到催化B料;
(3)三层复合PVC/PEX输水管的制备:以质量百分比计算,将所述接枝A料和所述催化B料按照95:5的比例混匀后加入内层挤出机,将所述接枝A料所述催化B料按照95:5的比例与聚氯乙烯(PVC)、相容剂混匀后加入中间层挤出机,将PVC加入外层挤出机,经复合共挤模头挤出,挤出后的管材经高温水蒸气蒸煮或自然放置1~3周,制得三层复合PVC/PEX输水管。
5.根据权利要求4所述的三层复合PVC/PEX输水管的制备方法,其特征在于,所述步骤(1)中双螺杆挤出机的挤出温度180~190℃,所述步骤(2)中双螺杆挤出机的挤出温度210~220℃。
6.根据权利要求4所述的三层复合PVC/PEX输水管的制备方法,其特征在于,步骤(3)中,所述中间层聚氯乙烯(PVC)与所述接枝A料的比例为(40:60)~(60:40)。
7.根据权利要求4所述的三层复合PVC/PEX输水管的制备方法,其特征在于,步骤(3)中,所述相容剂为马来酸酐接枝聚乙烯,所述马来酸酐接枝聚乙烯为0~5份。
8.根据权利要求4所述的三层复合PVC/PEX输水管的制备方法,其特征在于,步骤(3)中,所述内层挤出机的挤出温度160~190℃,所述中间层挤出机的挤出温度155~180℃。
9.根据权利要求8所述的三层复合PVC/PEX输水管的制备方法,其特征在于,所述中间层挤出机为双螺杆挤出机。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6302151B1 (en) * | 1999-05-26 | 2001-10-16 | Tricoflex Sa | Flexible hose of multilayer plastics material |
CN1344882A (zh) * | 2001-10-26 | 2002-04-17 | 甘国工 | 硅烷交联聚乙烯管道连接件连接的管网 |
CN2492729Y (zh) * | 2001-10-26 | 2002-05-22 | 甘国工 | 硅烷交联聚乙烯复合管 |
CN1671545A (zh) * | 2002-07-23 | 2005-09-21 | 诺沃恩Ip控股公司 | 具有氯化聚烯烃中空芯的聚烯烃管 |
CN1876706A (zh) * | 2005-06-10 | 2006-12-13 | 上海高分子功能材料研究所 | 低收缩抗开裂管材用硅烷交联聚乙烯塑料及制备方法 |
CN106499877A (zh) * | 2016-12-08 | 2017-03-15 | 重庆映秀科技有限公司 | 复合管以及制造方法 |
CN109253320A (zh) * | 2018-08-23 | 2019-01-22 | 浙江巨化新材料研究院有限公司 | 一种多层复合管材及其制备方法 |
-
2020
- 2020-09-18 CN CN202010986892.2A patent/CN112223854A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6302151B1 (en) * | 1999-05-26 | 2001-10-16 | Tricoflex Sa | Flexible hose of multilayer plastics material |
CN1344882A (zh) * | 2001-10-26 | 2002-04-17 | 甘国工 | 硅烷交联聚乙烯管道连接件连接的管网 |
CN2492729Y (zh) * | 2001-10-26 | 2002-05-22 | 甘国工 | 硅烷交联聚乙烯复合管 |
CN1671545A (zh) * | 2002-07-23 | 2005-09-21 | 诺沃恩Ip控股公司 | 具有氯化聚烯烃中空芯的聚烯烃管 |
CN1876706A (zh) * | 2005-06-10 | 2006-12-13 | 上海高分子功能材料研究所 | 低收缩抗开裂管材用硅烷交联聚乙烯塑料及制备方法 |
CN106499877A (zh) * | 2016-12-08 | 2017-03-15 | 重庆映秀科技有限公司 | 复合管以及制造方法 |
CN109253320A (zh) * | 2018-08-23 | 2019-01-22 | 浙江巨化新材料研究院有限公司 | 一种多层复合管材及其制备方法 |
Non-Patent Citations (1)
Title |
---|
徐定宇, 中国石化出版社 * |
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