[go: up one dir, main page]

CN105037909A - 一种耐热通用型pe-rt管及其制备方法 - Google Patents

一种耐热通用型pe-rt管及其制备方法 Download PDF

Info

Publication number
CN105037909A
CN105037909A CN201510394939.5A CN201510394939A CN105037909A CN 105037909 A CN105037909 A CN 105037909A CN 201510394939 A CN201510394939 A CN 201510394939A CN 105037909 A CN105037909 A CN 105037909A
Authority
CN
China
Prior art keywords
heat
tube
parts
universal type
added
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510394939.5A
Other languages
English (en)
Inventor
王先红
蔡海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN CITY WEIXING NEW BUILDING MATERIAL CO Ltd
Original Assignee
TIANJIN CITY WEIXING NEW BUILDING MATERIAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TIANJIN CITY WEIXING NEW BUILDING MATERIAL CO Ltd filed Critical TIANJIN CITY WEIXING NEW BUILDING MATERIAL CO Ltd
Priority to CN201510394939.5A priority Critical patent/CN105037909A/zh
Publication of CN105037909A publication Critical patent/CN105037909A/zh
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/76006—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/7604—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • 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)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

本发明公开一种耐热通用型PE-RT管及其制备方法，其特征在于：由下述重量份数的原料制成：耐热聚乙烯(PE-RT)92～98份，抗氧剂0.5～1.5份，纳米高导热复合粉1～5份，加工助剂0.5～1.5份。本发明加入的纳米高导热复合粉，提高了管材的导热性能，从而延长了管材系统设备的使用寿命，也提高了管材的导热换热效率。本发明的组合物具有优良的长期耐热、耐氧化性能和耐高温蠕变性能。

Description

一种耐热通用型PE-RT管及其制备方法
技术领域
本发明涉及聚乙烯管材领域，具体涉及一种耐热通用型PE-RT管及其制备方法。
背景技术
目前我国的地板采暖管、热交换器、冷热水输送等广泛使用的是无规共聚聚丙烯(PPR)、聚丁烯(PB)、氯化聚氯乙烯(PVC-C)和交联聚乙烯(PEX)塑料管材随着塑料管材行业的迅速发展，一种新型的PE-RT管材凭借其优异的物理性能、耐腐蚀性、柔韧性、加工性及施工安装性等特点，使其成为在中、高温水输送领域里出现的崭新的聚乙烯管材用料。PE-RT管是一种可以用于热水管的非交联的聚乙烯树脂。PE-RT管是专门为冷热供水用管材而设计的一种乙烯与辛烯、己烯或丁烯共聚物。而目前PE-RT管材急需解决的是其耐热性能及抗氧化性能。
发明内容
本发明要解决的技术问题是提供一种耐热通用型PE-RT管组合物及其制备方法，以该耐热聚乙烯组合物为原料制得的管材抗热氧化性能有较大的提升，能够进一步满足应用实际的要求。
为了解决上述问题，本发明采用以下技术方案：一种耐热通用型PE-RT管，由下述重量份数的原料制成：
所述耐热聚乙烯(PE-RT)为乙烯与辛烯共聚物，密度为0.926～0.950g/cm3，熔体流动速率在190℃、砝码重量为2.16Kg时，为0.1～2g/10min。
所述抗氧剂为受阻酚类抗氧剂和亚磷酸酯类抗氧剂，受阻酚类抗氧剂和亚磷酸酯类抗氧剂的重量比为1：0.2～1：9。
所述纳米高导热复合粉由多种超高导热填料组合而成，所述超高导热填料包括纳米氮化硅镁、纳米碳化硅、纳米氮化铝和纳米氮化硼。
所述加工助剂为氟弹性体，添加量较好为0.6～0.9份。
耐热通用型PE-RT管的制备方法如下：
(1)将抗氧剂、纳米高导热复合粉、加工助剂加入高速混料机中，70～80℃条件下，高速搅拌40～50min，将物料放出，加到双螺杆挤出机料斗中，进行挤出造粒；工艺条件为：加热平均温度190～195℃，主螺杆转速1150～1200r/min，喂料螺杆转速1250～1300r/min，烘干温度95～100℃，切料机转速1300～1500r/min；
(2)将(1)制得的母粒与耐热聚乙烯(PE-RT)混合均匀，加到注塑机上料斗中，在高混机中先冷混，然后热混，在成型造粒机上成型造粒；加到注塑机上料斗中，注塑制得管材；工艺条件为：加热平均温度210～240℃，注塑压力7.5～8MPa，注塑周期25～30min。
实施本发明的技术方案，具有以下有益效果：本发明加入的纳米高导热复合粉，提高了管材的导热性能，从而延长了管材系统设备的使用寿命，也提高了管材的导热换热效率。本发明的组合物具有优良的长期耐热、耐氧化性能和耐高温蠕变性能。
具体实施方式
实施例1
一种耐热通用型PE-RT管，各组分的重量份数为：耐热聚乙烯(PE-RT)92份，抗氧剂1.5份，纳米高导热复合粉5份，加工助剂1.5份。
制备时先将抗氧剂、纳米高导热复合粉、加工助剂加入高速混料机中，70～80℃条件下，高速搅拌40～50min，将物料放出，加到双螺杆挤出机料斗中，进行挤出造粒；工艺条件为：加热平均温度190～195℃，主螺杆转速1150～1200r/min，喂料螺杆转速1250～1300r/min，烘干温度95～100℃，切料机转速1300～1500r/min；
再将上述制得的母粒与耐热聚乙烯(PE-RT)混合均匀，加到注塑机上料斗中，在高混机中先冷混，然后热混，在成型造粒机上成型造粒；加到注塑机上料斗中，注塑制得管材；工艺条件为：加热平均温度210～240℃，注塑压力7.5～8MPa，注塑周期25～30min。
实施例2
一种耐热通用型PE-RT管，各组分的重量份数为：耐热聚乙烯(PE-RT)98份，抗氧剂0.5份，纳米高导热复合粉1份，加工助剂0.5份。
制备时先将抗氧剂、纳米高导热复合粉、加工助剂加入高速混料机中，70～80℃条件下，高速搅拌40～50min，将物料放出，加到双螺杆挤出机料斗中，进行挤出造粒；工艺条件为：加热平均温度190～195℃，主螺杆转速1150～1200r/min，喂料螺杆转速1250～1300r/min，烘干温度95～100℃，切料机转速1300～1500r/min；
再将上述制得的母粒与耐热聚乙烯(PE-RT)混合均匀，加到注塑机上料斗中，在高混机中先冷混，然后热混，在成型造粒机上成型造粒；加到注塑机上料斗中，注塑制得管材；工艺条件为：加热平均温度210～240℃，注塑压力7.5～8MPa，注塑周期25～30min。
实施例3
一种耐热通用型PE-RT管，各组分的重量份数为：耐热聚乙烯(PE-RT)95份，抗氧剂1份，纳米高导热复合粉3份，加工助剂1份。
制备时先将抗氧剂、纳米高导热复合粉、加工助剂加入高速混料机中，70～80℃条件下，高速搅拌40～50min，将物料放出，加到双螺杆挤出机料斗中，进行挤出造粒；工艺条件为：加热平均温度190～195℃，主螺杆转速1150～1200r/min，喂料螺杆转速1250～1300r/min，烘干温度95～100℃，切料机转速1300～1500r/min；
再将上述制得的母粒与耐热聚乙烯(PE-RT)混合均匀，加到注塑机上料斗中，在高混机中先冷混，然后热混，在成型造粒机上成型造粒；加到注塑机上料斗中，注塑制得管材；工艺条件为：加热平均温度210～240℃，注塑压力7.5～8MPa，注塑周期25～30min。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉该技术的人在本发明所揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (6)

1.一种耐热通用型PE-RT管，其特征在于：由下述重量份数的原料制成：
2.根据权利要求1所述的耐热通用型PE-RT管，其特征在于：所述耐热聚乙烯(PE-RT)为乙烯与辛烯共聚物，密度为0.926～0.950g/cm3，熔体流动速率在190℃、砝码重量为2.16Kg时，为0.1～2g/10min。
3.根据权利要求1所述的耐热通用型PE-RT管，其特征在于：所述抗氧剂为受阻酚类抗氧剂和亚磷酸酯类抗氧剂，受阻酚类抗氧剂和亚磷酸酯类抗氧剂的重量比为1：0.2～1：9。
4.根据权利要求1所述的耐热通用型PE-RT管，其特征在于：所述纳米高导热复合粉由多种超高导热填料组合而成，所述超高导热填料包括纳米氮化硅镁、纳米碳化硅、纳米氮化铝和纳米氮化硼。
5.根据权利要求1所述的耐热通用型PE-RT管，其特征在于：所述加工助剂为氟弹性体。
6.权利要求1所述的一种耐热通用型PE-RT管制备方法，其特征在于包括如下步骤：(1)将抗氧剂、纳米高导热复合粉、加工助剂加入高速混料机中，70～80℃条件下，高速搅拌40～50min，将物料放出，加到双螺杆挤出机料斗中，进行挤出造粒；工艺条件为：加热平均温度190～195℃，主螺杆转速1150～1200r/min，喂料螺杆转速1250～1300r/min，烘干温度95～100℃，切料机转速1300～1500r/min；
(2)将(1)制得的母粒与耐热聚乙烯(PE-RT)混合均匀，加到注塑机上料斗中，在高混机中先冷混，然后热混，在成型造粒机上成型造粒；加到注塑机上料斗中，注塑制得管材；工艺条件为：加热平均温度210～240℃，注塑压力7.5～8MPa，注塑周期25～30min。
CN201510394939.5A 2015-07-07 2015-07-07 一种耐热通用型pe-rt管及其制备方法 Pending CN105037909A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510394939.5A CN105037909A (zh) 2015-07-07 2015-07-07 一种耐热通用型pe-rt管及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510394939.5A CN105037909A (zh) 2015-07-07 2015-07-07 一种耐热通用型pe-rt管及其制备方法

Publications (1)

Publication Number Publication Date
CN105037909A true CN105037909A (zh) 2015-11-11

Family

ID=54444906

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510394939.5A Pending CN105037909A (zh) 2015-07-07 2015-07-07 一种耐热通用型pe-rt管及其制备方法

Country Status (1)

Country Link
CN (1) CN105037909A (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109140062A (zh) * 2017-06-15 2019-01-04 山东品源管业有限公司 一种外黑内白型钢丝网增强塑料复合管材
CN109294032A (zh) * 2018-09-14 2019-02-01 江苏理工学院 一种多元复合填充粒子改性导热pe复合材料及其制备方法
CN109762225A (zh) * 2018-11-23 2019-05-17 天津力神电池股份有限公司 高导热绝缘功能母料及其用途
CN111356869A (zh) * 2017-11-17 2020-06-30 埃克森美孚化学专利公司 Pe-rt管道及其制造方法
CN112066095A (zh) * 2020-08-27 2020-12-11 河北通涛管业集团股份有限公司 一种耐热高密度聚乙烯结构壁b型管材及其制备方法
CN112373161A (zh) * 2020-10-15 2021-02-19 浙江巨化新材料研究院有限公司 一种高导热、高耐热的多层复合管材及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102408610A (zh) * 2011-11-14 2012-04-11 联塑市政管道（河北）有限公司 一种功能性聚乙烯管材及其制备方法
CN102494199A (zh) * 2011-11-14 2012-06-13 联塑市政管道（河北）有限公司 一种采暖用带阻氧层的高导热pe-rt管材
CN103242581A (zh) * 2013-05-17 2013-08-14 辽宁康泰塑胶科技有限公司 一种高导热耐热聚乙烯地暖管材及制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102408610A (zh) * 2011-11-14 2012-04-11 联塑市政管道（河北）有限公司 一种功能性聚乙烯管材及其制备方法
CN102494199A (zh) * 2011-11-14 2012-06-13 联塑市政管道（河北）有限公司 一种采暖用带阻氧层的高导热pe-rt管材
CN103242581A (zh) * 2013-05-17 2013-08-14 辽宁康泰塑胶科技有限公司 一种高导热耐热聚乙烯地暖管材及制备方法

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
严捍东主编: "《土木工程材料 第2版》", 31 August 2014, 上海：同济大学出版社 *
中国建筑技术发展中心市政技术情报部编: "《国外煤气用聚乙烯管标准及技术资料汇编》", 31 May 1965 *
张玉龙、任滨主编: "《塑料制品配方与制备手册》", 31 January 2015, 北京：机械工业出版社 *
朱洪法，朱玉霞: "《工业助剂手册》", 30 June 2007, 金盾出版社 *
林师沛编著: "《塑料配制与成型 第2版》", 31 October 2004, 北京：化学工业出版社 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109140062A (zh) * 2017-06-15 2019-01-04 山东品源管业有限公司 一种外黑内白型钢丝网增强塑料复合管材
CN111356869A (zh) * 2017-11-17 2020-06-30 埃克森美孚化学专利公司 Pe-rt管道及其制造方法
US11479624B2 (en) 2017-11-17 2022-10-25 Exxonmobil Chemical Patents Inc. PE-RT pipes and processes for making the same
CN109294032A (zh) * 2018-09-14 2019-02-01 江苏理工学院 一种多元复合填充粒子改性导热pe复合材料及其制备方法
CN109762225A (zh) * 2018-11-23 2019-05-17 天津力神电池股份有限公司 高导热绝缘功能母料及其用途
CN112066095A (zh) * 2020-08-27 2020-12-11 河北通涛管业集团股份有限公司 一种耐热高密度聚乙烯结构壁b型管材及其制备方法
CN112373161A (zh) * 2020-10-15 2021-02-19 浙江巨化新材料研究院有限公司 一种高导热、高耐热的多层复合管材及其制备方法

Similar Documents

Publication Publication Date Title
CN105037909A (zh) 一种耐热通用型pe-rt管及其制备方法
CN103524861B (zh) 一种耐高温、高耐压聚乙烯组合物
CN102952323B (zh) 一种耐热聚乙烯组合物及其用途
CN101857689A (zh) 一种制备高导热塑料管道的材料
CN106317585B (zh) 一种耐热聚乙烯树脂组合物及其应用
CN107383612A (zh) 一种改性白石墨烯复合聚丙烯铝塑稳态管材及其制备方法
CN105131385A (zh) 一种高阻氧高强的聚烯烃导热管材及其制备方法
CN102408610A (zh) 一种功能性聚乙烯管材及其制备方法
CN102002191B (zh) Ppr/evoh/poe共混高抗冲阻透管材和制造方法
CN102617908B (zh) 一种纳米导热复合材料及其制备方法
CN104761822A (zh) 掺杂碳酸钙聚烯烃导热复合材料及其制备方法
CN101666397A (zh) 导热塑料管
CN103524859B (zh) 一种含石墨导热聚乙烯母料及其制备方法和组合物
CN102746623A (zh) 一种绝缘导热材料的制备方法
CN105524425A (zh) 一种用于3d打印的导热环氧树脂复合材料及其制备方法
CN105482262A (zh) 一种阻燃高散热改性聚丙烯电力管材及其制备方法
CN101805424B (zh) 一种电热水器内胆用的硅烷交联聚乙烯专用料
CN106751116A (zh) 一种pvc管材组合物
CN102128316A (zh) 高热导率耐热聚乙烯塑料管
CN103044745B (zh) 一种采油用防腐、防结蜡、耐高温聚乙烯管材及其制备方法
CN103224663B (zh) 一种低耗能塑料地暖管材及制备方法
CN1093551C (zh) 高导热性高密度聚乙烯基复合材料
CN103044739A (zh) 一种聚乙烯排水管材及其制备方法
CN104962027B (zh) 一种弹性体合金材料及其制备方法
CN105001637A (zh) 一种管道用高分子材料及其制备方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20151111

RJ01 Rejection of invention patent application after publication