WO2016061761A1 - 一种塑胶管材及其制备方法 - Google Patents

一种塑胶管材及其制备方法 Download PDF

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WO2016061761A1
WO2016061761A1 PCT/CN2014/089163 CN2014089163W WO2016061761A1 WO 2016061761 A1 WO2016061761 A1 WO 2016061761A1 CN 2014089163 W CN2014089163 W CN 2014089163W WO 2016061761 A1 WO2016061761 A1 WO 2016061761A1
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parts
tube
antioxidant
density polyethylene
low density
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PCT/CN2014/089163
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French (fr)
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徐睿
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徐睿
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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
    • 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
    • C08L23/06—Polyethene
    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers

Definitions

  • the invention relates to a plastic pipe and a preparation method thereof.
  • the plastic tube has poor insulation performance, short service life and difficult construction, and these problems need to be solved urgently.
  • a plastic tube composed of the following components by weight:
  • the dimethyl silicone oil viscosity ranges from 5,000 to 30,000 cst;
  • the antioxidant is one or more of the following: N-phenyl- ⁇ -naphthylamine; N-phenyl- ⁇ -naphthylamine; 2-thiol benzoimidazole; 2-thiol Zinc phthalimide zinc salt;
  • the masterbatch is a mixture of low density polyethylene and toner.
  • the present invention also proposes the following technical solution: a method for preparing a plastic tube, comprising the following steps:
  • Step 1 Weigh 60-80 parts of ultra-low density polyethylene, 20-40 parts of ethylene propylene rubber, 5-8 parts of dimethyl silicone oil, 4-10 parts of antioxidant, 4-8 parts of color masterbatch;
  • Step 2 mixing and granulating by an internal mixer or parallel twin-screw extruder, and then extruding into a pipe by a single-screw extruder;
  • Step 3 treating the outer surface of the extruded pipe with infrared light having a wavelength of 1000 nm to 1600 nm at a distance of 5-10 cm from the die of the extruder;
  • Step 4 The tube is cross-linked by radiation of cobalt 60 or an electron accelerator 50-160 KGy, and the tube after radiation crosslinking is expanded 2-4 times at a temperature of 85-135 °C.
  • the invention has the following beneficial effects: the plastic tube of the invention has good crack resistance and can pass the V-notch cracking test at 120 ° C / 168 h, which greatly reduces some defects generated during the construction process in the subsequent The probability of cracking during use.
  • the plastic tube of the invention can be used for 20 years under the temperature condition of 90 ° C, and is installed in a substation, a transformer, a switch cabinet, can perform its prescribed function under normal environmental conditions, has a heating shrinking function, and is installed on the bus bar to insulate. effect.
  • the invention provides a plastic tube consisting of the following components by weight:
  • the dimethyl silicone oil has a viscosity in the range of 5,000 to 30,000 cSt.
  • the antioxidant is one or more of the following: N-phenyl- ⁇ -naphthylamine; N-phenyl- ⁇ -naphthylamine; 2-thiol benzoimidazole; 2-thiol Zinc phthalimide zinc salt.
  • the masterbatch is a mixture of low density polyethylene and toner, which serves as a coloring agent.
  • the preparation method of the above plastic tube comprises the following steps:
  • Step 1 Weigh 60-80 parts of ultra-low density polyethylene, 20-40 parts of ethylene propylene rubber, 5-8 parts of dimethyl silicone oil, 4-10 parts of antioxidant, 4-8 parts of color masterbatch;
  • Step 2 mixing and granulating by an internal mixer or parallel twin-screw extruder, and then extruding into a pipe by a single-screw extruder;
  • Step 3 treating the outer surface of the extruded pipe with infrared light having a wavelength of 1000 nm to 1600 nm at a distance of 5-10 cm from the die of the extruder;
  • Step 4 The tube is cross-linked by radiation of cobalt 60 or an electron accelerator 50-160 KGy, and the tube after radiation crosslinking is expanded 2-4 times at a temperature of 85-135 °C.
  • the tensile strength was 14.7 MPa and the elongation at break was 528%.
  • the V-shaped notch is cut and aged at 120 ° C / 168 h without any extension of the crack.
  • the above materials were kneaded and granulated by an internal mixer and then extruded into a tube using a single screw extruder.
  • the outer surface of the extruded tube was treated with infrared light having a wavelength of 700-1600 nm at a distance of 5-10 cm from the die of the extruder.
  • the tube is cross-linked by cobalt 60 or electron accelerator 120KGy, and the tube after radiation crosslinking is expanded 2.5 times at 115 ° C to obtain a plastic tube.
  • the properties are as follows:
  • the tensile strength was 13.2 MPa and the elongation at break was 632%.
  • the V-shaped notch is cut and aged at 120 ° C / 168 h without any extension of the crack.
  • the above materials were kneaded and granulated by an internal mixer and then extruded into a tube using a single screw extruder.
  • the outer surface of the extruded tube was treated with infrared light having a wavelength of 700-1600 nm at a distance of 5-10 cm from the die of the extruder.
  • the tube is cross-linked by cobalt 60 or electron accelerator 80KGy, and the tube after radiation crosslinking is expanded 2.5 times at a temperature of 100 ° C to obtain a plastic tube.
  • the properties are as follows:
  • the V-shaped notch is cut and aged at 120 ° C / 168 h without any extension of the crack.
  • the above materials were kneaded and granulated by an internal mixer and then extruded into a tube using a single screw extruder.

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  • 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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

一种塑胶管，其由按照重量计的下列组分组成：超低密度聚乙烯60-80份；乙丙橡胶20-40份；二甲基硅油5-8份；抗氧剂4-10份；色母料4-8份；所述二甲基硅油粘度范围为5000-30000 cst；所述抗氧剂为下述物质中的一种或多种：N-苯基-α-萘胺；N-苯基-β-萘胺；2-硫醇基苯骈咪唑；2-硫醇基苯骈咪唑锌盐；所述色母料为低密度聚乙烯与色粉的混合物。本发明绝缘性能好、使用寿命长、方便施工。

Description

一种塑胶管材及其制备方法 技术领域
本发明涉及一种塑胶管材及其制备方法。
背景技术
长期以来，我国塑胶管多为低压低端产品，10～36kV电压等级高性能塑胶管在总体性能上与国外大公司Tyco、3M的同类产品还存在一定差距，研制10～36kV电压等级高性能热缩母排套管有利于打破国外产品的垄断地位，加大电力基础设施与设备的国产化率。
目前的塑胶管绝缘性能较差、使用年限短、施工困难，这些问题亟待解决。
发明内容
本发明要解决的技术问题在于：提供一种绝缘性能好、使用寿命长、方便施工的塑胶管及其制备方法。
为了解决上述技术问题，本发明提出以下技术方案：一种塑胶管，其由按照重量计的下列组分组成：
Figure PCTCN2014089163-appb-000001
Figure PCTCN2014089163-appb-000002
所述二甲基硅油粘度范围为5000－30000cst；
所述抗氧剂为下述物质中的一种或多种：N-苯基-α-萘胺；N-苯基-β-萘胺；2-硫醇基苯骈咪唑；2-硫醇基苯骈咪唑锌盐；
所述色母料为低密度聚乙烯与色粉的混合物。
为了解决上述技术问题，本发明还提出以下技术方案：一种塑胶管的制备方法，包括如下步骤：
步骤1：按重量称取超低密度聚乙烯60－80份、乙丙橡胶20－40份、二甲基硅油5－8份、抗氧剂4－10份、色母料4－8份；
步骤2：经过密炼机混炼造粒或者平行双螺杆挤出机混炼造粒，然后用单螺杆挤出机挤出成管材；
步骤3：在距挤出机口模5－10cm处用波长为1000nm－1600nm的红外光对挤出管材外表面进行处理；
步骤4：所述管材经过钴60或电子加速器50－160KGy辐射交联，辐射交联后的管材在85－135℃温度下扩张2－4倍。
与现有技术相比，本发明具有以下有益效果：本发明塑胶管，耐开裂性能好，能通过120℃/168h的V形缺口开裂测试，大大降低了施工过程中产生的一些缺陷在后续的使用过程中裂开的几率。
本发明塑胶管，能够在90℃温度条件下使用20年，其安装在变电站、变压器、开关柜内，能够在正常环境条件下完成其规定功能，具有加热收缩功能，安装在母线上起到绝缘作用。
具体实施方式
本发明提出一种塑胶管，其由按照重量计的下列组分组成：
Figure PCTCN2014089163-appb-000003
所述二甲基硅油粘度范围为5000－30000cst。
所述抗氧剂为下述物质中的一种或多种：N-苯基-α-萘胺；N-苯基-β-萘胺；2-硫醇基苯骈咪唑；2-硫醇基苯骈咪唑锌盐。
所述色母料为低密度聚乙烯与色粉的混合物，起着色作用。
制备上述的塑胶管的制备方法，包括如下步骤：
步骤1：按重量称取超低密度聚乙烯60－80份、乙丙橡胶20－40份、二甲基硅油5－8份、抗氧剂4－10份、色母料4－8份；
步骤2：经过密炼机混炼造粒或者平行双螺杆挤出机混炼造粒，然后用单螺杆挤出机挤出成管材；
步骤3：在距挤出机口模5－10cm处用波长为1000nm－1600nm的红外光对挤出管材外表面进行处理；
步骤4：所述管材经过钴60或电子加速器50－160KGy辐射交联，辐射交联后的管材在85－135℃温度下扩张2－4倍。
制备实施例1
称取超低密度聚乙烯6份、乙丙橡胶2份、二甲基硅油8份、抗氧剂9份、色母料5份；
上述材料经过密炼机混炼造粒，然后用单螺杆挤出机挤出成管材。
在距挤出机口模5－10cm处用波长为700－1600nm的红外光对挤出管材外表面进行处理。
所述管材经过钴60或电子加速器50KGy辐射交联，辐射交联后的管材在95℃温度下扩张2.5倍，得到塑胶管，其性能如下。
阻燃性：通过IEC60332阻燃测试。
拉伸强度12.6MPa，断裂伸长率645％。
120℃/168h老化，-55℃/4h低温处理后，工频耐压测试和雷电冲击测试通过。
塑胶管套铜排受限收缩后，切V形缺口，按120℃/168h条件老化，裂纹无任何延伸。
150℃/1200h老化后，断裂伸长率478％。
制备实施例2
称取超低密度聚乙烯8份、乙丙橡胶4份、二甲基硅油6份、抗氧剂8份、色母料3份；
上述材料经过密炼机混炼造粒，然后用单螺杆挤出机挤出成管材。
在距挤出机口模5－10cm处用波长为700－1600nm的红外光对挤出管材外表面进行处理。
所述管材经过钴60或电子加速器160KGy辐射交联，辐射交联后的管材在105℃温度下扩张2.5倍，得到塑胶管，其性能如下：
阻燃性：通过IEC60332阻燃测试。
拉伸强度14.7MPa，断裂伸长率528％。
120℃/168h老化，-55℃/4h低温处理后，工频耐压测试和雷电冲击测试通过。
塑胶管套铜排受限收缩后，切V形缺口，按120℃/168h条件老化，裂纹无任何延伸。
150℃/1200h老化后，断裂伸长率434％。
制备实施例3
称取超低密度聚乙烯5份、乙丙橡胶6份、二甲基硅油10份、抗氧剂6份、色母料7份；
上述材料经过密炼机混炼造粒，然后用单螺杆挤出机挤出成管材。
在距挤出机口模5－10cm处用波长为700－1600nm的红外光对挤出管材外表面进行处理。
所述管材经过钴60或电子加速器120KGy辐射交联，辐射交联后的管材在115℃温度下扩张2.5倍，得到塑胶管，其性能如下：
阻燃性：通过IEC60332阻燃测试。
拉伸强度13.2MPa，断裂伸长率632％。
120℃/168h老化，-55℃/4h低温处理后，工频耐压测试和雷电冲击测试通过。
塑胶管套铜排受限收缩后，切V形缺口，按120℃/168h条件老化，裂纹无任何延伸。
150℃/1200h老化后，断裂伸长率569％。
制备实施例4
称取超低密度聚乙烯2份、乙丙橡胶10份、二甲基硅油7份、抗氧剂15份、色母料3份；
上述材料经过密炼机混炼造粒，然后用单螺杆挤出机挤出成管材。
在距挤出机口模5－10cm处用波长为700－1600nm的红外光对挤出管材外表面进行处理。
所述管材经过钴60或电子加速器80KGy辐射交联，辐射交联后的管材在100℃温度下扩张2.5倍，得到塑胶管，其性能如下：
阻燃性：通过IEC60332阻燃测试。
拉伸强度13.6MPa，断裂伸长率675％。
120℃/168h老化，-55℃/4h低温处理后，工频耐压测试和雷电冲击测试通过。
塑胶管套铜排受限收缩后，切V形缺口，按120℃/168h条件老化，裂纹无任何延伸。
150℃/1200h老化后，断裂伸长率546％。
制备实施例5
称取超低密度聚乙烯5份、乙丙橡胶5份、二甲基硅油7份、抗氧剂12份、色母料2份；
上述材料经过密炼机混炼造粒，然后用单螺杆挤出机挤出成管材。
在距挤出机口模5－10cm处用波长为700－1600nm的红外光对挤出管材外表面进行处理。
所述管材经过钴60或电子加速器120KGy辐射交联，辐射交联后的管材在110℃温度下扩张2.5倍，得到塑胶管，其性能如下：
阻燃性：通过IEC60332阻燃测试。
拉伸强度15.5MPa，断裂伸长率587％。
120℃/168h老化，-55℃/4h低温处理后，工频耐压测试和雷电冲击测试通过。
塑胶管套铜排受限收缩后，切V形缺口，按120℃/168h条件老化，裂纹无任何延伸。
150℃/1200h老化后，断裂伸长率466％。
以上五个实施例，产品性能均满足塑胶管要求，能够在90℃温度条件下使用20年。

Claims (2)

  1. 一种塑胶管，其由按照重量计的下列组分组成：
    Figure PCTCN2014089163-appb-100001
    所述二甲基硅油粘度范围为5000－30000cst；
    所述抗氧剂为下述物质中的一种或多种：N-苯基-α-萘胺；N-苯基-β-萘胺；2-硫醇基苯骈咪唑；2-硫醇基苯骈咪唑锌盐；
    所述色母料为低密度聚乙烯与色粉的混合物。
  2. 一种如权利要求1所述的塑胶管的制备方法，其特征在于，包括如下步骤：
    步骤1：按重量称取超低密度聚乙烯60－80份、乙丙橡胶20－40份、二甲基硅油5－8份、抗氧剂4－10份、色母料4－8份；
    步骤2：经过密炼机混炼造粒或者平行双螺杆挤出机混炼造粒，然后用单螺杆挤出机挤出成管材；
    步骤3：在距挤出机口模5－10cm处用波长为1000nm－1600nm的红外光对挤出管材外表面进行处理；
    步骤4：所述管材经过钴60或电子加速器50－160KGy辐射交联，辐射交联后的管材在85－135℃温度下扩张2－4倍。
PCT/CN2014/089163 2014-10-22 2014-10-22 一种塑胶管材及其制备方法 WO2016061761A1 (zh)

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CN110982146B (zh) * 2019-12-04 2023-05-12 临海伟星新型建材有限公司 一种夜光pe管道及其制备方法
CN111533984A (zh) * 2020-06-24 2020-08-14 湖南金海塑胶管业有限公司 一种抗老化pe给水管材料及其制备方法

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