WO2016061755A1 - Plastic material and preparation method therefor - Google Patents

Plastic material and preparation method therefor Download PDF

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Publication number
WO2016061755A1
WO2016061755A1 PCT/CN2014/089152 CN2014089152W WO2016061755A1 WO 2016061755 A1 WO2016061755 A1 WO 2016061755A1 CN 2014089152 W CN2014089152 W CN 2014089152W WO 2016061755 A1 WO2016061755 A1 WO 2016061755A1
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parts
antioxidant
ethylene
ethyl acrylate
tert
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PCT/CN2014/089152
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French (fr)
Chinese (zh)
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徐睿
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徐睿
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Priority to PCT/CN2014/089152 priority Critical patent/WO2016061755A1/en
Publication of WO2016061755A1 publication Critical patent/WO2016061755A1/en

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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
    • C08L23/08—Copolymers of ethene
    • 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
    • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms

Definitions

  • the invention relates to a plastic material and a preparation method thereof.
  • the material is resistant to high temperature heat aging and high dose radiation, and can be widely applied to occasions where air, warships, nuclear submarines and the like have relatively high material performance requirements.
  • the conventional heat-shrinkable tube has a short service life and cannot reach a service life of 60 years at a temperature of 90 ° C.
  • the material cannot withstand high-dose ⁇ -ray irradiation after heat aging.
  • halogen-containing flame retardants have the disadvantage of high toxicity and high toxicity when burned, which easily causes secondary fires to life and property, and is likely to cause pollution.
  • the technical problem to be solved by the present invention is to provide a plastic material resistant to long-term high-temperature heat aging and high-dose radiation and a preparation method thereof.
  • a plastic material composed of the following components by weight:
  • the ethylene-ethyl acrylate copolymer has an ethyl acrylate (EA) content of 25 to 40%, and a melt index of 8.0 to 50 g/10 min;
  • the hindered phenolic antioxidant is composed of [ ⁇ -(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010); 4, 4 '-Thionine (6-tert-butyl-2-methylphenol) (antioxidant 736); 2,2,-thio-bis(4-methyl-6-tert-butylphenol) (antioxidant Agent 2246-S);
  • the halogen-free flame retardant is compounded by red phosphorus, aluminum hydroxide and magnesium hydroxide according to a certain mass ratio.
  • the present invention also proposes the following technical solution: a method for preparing a plastic material, comprising the following steps:
  • Step 1 100 parts of ethylene-ethyl acrylate copolymer; 20-40 parts of ethylene-hexene copolymer; 5-10 parts of hindered phenolic antioxidant; 80-120 parts of halogen-free flame retardant; used at a certain temperature Mixing and plasticizing in an internal mixer, using a mill to pass through twice, and granulating using a twin-screw extruder to obtain a material in a granular form;
  • Step 2 Extruding the pipe with a twin-screw extruder or molding various shaped parts with an injection molding machine;
  • Step 3 Applying electron beam irradiation to the device, the irradiation dose is 180-250 kGy, and the polymer structure of the material after irradiation is cross-linked;
  • Step 4 The device is expanded by pneumatic or mechanical means at 120 to 150 ° C to obtain a polymer material device having heat shrinkage properties.
  • plastic material of the invention is halogen-free and flame retardant, and meets environmental protection requirements.
  • the plastic material of the invention can withstand high temperature heat aging and high dose irradiation, and the heat shrinkable material can withstand high temperature and high pressure water vapor and alkaline solution damage to the material after high temperature heat aging and high dose irradiation treatment. .
  • the invention provides a plastic material consisting of the following components by weight:
  • the ethylene-ethyl acrylate copolymer has an ethyl acrylate (EA) content of 25 to 40% and a melt index of 8.0 to 50 g/10 min.
  • the hindered phenolic antioxidant is composed of [ ⁇ -(3',5'-di-tert-butyl) -4'-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010); 4,4'-thiobis(6-tert-butyl-2-methylphenol) (antioxidant 736); 2,-Thio-bis(4-methyl-6-tert-butylphenol) (antioxidant 2246-S).
  • the halogen-free flame retardant is compounded by red phosphorus, aluminum hydroxide and magnesium hydroxide according to a certain mass ratio.
  • the preparation method of preparing the plastic material comprises the following steps:
  • Step 1 100 parts of ethylene-ethyl acrylate copolymer (EEA); 20-40 parts of ethylene-hexene copolymer; 5-10 parts of hindered phenolic antioxidant; 80-120 parts of halogen-free flame retardant; Mixing and plasticizing at a temperature using an internal mixer, using a mill to pass through twice, and granulating using a twin-screw extruder to obtain a material in a granular form;
  • ESA ethylene-ethyl acrylate copolymer
  • 20-40 parts of ethylene-hexene copolymer 5-10 parts of hindered phenolic antioxidant
  • 80-120 parts of halogen-free flame retardant 80-120 parts
  • Step 2 Extruding the pipe with a twin-screw extruder or molding various shaped parts with an injection molding machine;
  • Step 3 Applying electron beam irradiation to the device, the irradiation dose is 180-250 kGy, and the polymer structure of the material after irradiation is cross-linked;
  • Step 4 The device is expanded by pneumatic or mechanical means at 120 to 150 ° C to obtain a polymer material device having heat shrinkage properties.
  • ESA ethylene-ethyl acrylate copolymer
  • 20 parts of ethylene-hexene copolymer 10 parts of hindered phenolic antioxidant; 80 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly.
  • the material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder.
  • the pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 200 kGy.
  • the inner diameter of the tube is doubled to the original size by a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
  • the performance of the heat shrinkable sleeve is as follows:
  • ESA ethylene-ethyl acrylate copolymer
  • 50 parts of ethylene-hexene copolymer 50 parts of ethylene-hexene copolymer; 30 parts of hindered phenolic antioxidant; 100 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly.
  • the material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder.
  • the pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 180 kGy.
  • the inner diameter of the tube is doubled to the original size by a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
  • the performance of the heat shrinkable sleeve is as follows:
  • ESA ethylene-ethyl acrylate copolymer
  • 80 parts of ethylene-hexene copolymer 70 parts of hindered phenolic antioxidant; 60 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly.
  • the material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder.
  • the pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 160 kGy.
  • the inner diameter of the tube is 3 times of the original size using a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
  • the performance of the heat shrinkable sleeve is as follows:
  • ESA ethylene-ethyl acrylate copolymer
  • 40 parts of ethylene-hexene copolymer 23 parts of hindered phenolic antioxidant; 74 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly.
  • the material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder.
  • the pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 160 kGy.
  • the inner diameter of the tube is 3 times of the original size using a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
  • the performance of the heat shrinkable sleeve is as follows:

Abstract

A plastic material consists of the following components measured by weight: 100 parts of ethylene-ethyl acrylate (EEA) copolymer, 20 to 40 parts of ethylene-hexene copolymer, 5 to 10 parts of hindered phenolic antioxidant, and 80 to 120 parts of halogen-free flame retardant. The content of ethyl acrylate (EA) in the ethylene-ethyl acrylate (EEA) copolymer is 25-40%, and the melt index is 8.0-50g/10min. The hindered phenolic antioxidant consists of the following materials: [β-(3',5'-di-tert-butyl-4'-hydroxyphenyl) propionic acid] pentaerythritol ester (antioxidant 1010), 4,4'-thiobis (6-tert-butyl-2-methyl phenol) (antioxidant 736), and 2,2,-thio-double (4-methyl-6-tert-butylphenol) (antioxidant 2246-S). The halogen-free flame retardant is compounded by using red phosphorus, aluminum hydroxide and magnesium hydroxide that are in a mass proportion. The material of the present invention resists against high-temperature thermal aging and high-dose irradiation, and can be widely used in scenarios having high requirements on material performance, such as aviation, naval vessels and nuclear submarines.

Description

一种塑胶材料及其制备方法Plastic material and preparation method thereof 技术领域Technical field
本发明涉及一种塑胶材料及其制备方法，该种材料耐高温热老化耐高剂量辐射，可广泛应用到航空、军舰、核潜艇等对材料性能要求比较高的场合。The invention relates to a plastic material and a preparation method thereof. The material is resistant to high temperature heat aging and high dose radiation, and can be widely applied to occasions where air, warships, nuclear submarines and the like have relatively high material performance requirements.
背景技术Background technique
常规的热缩管使用寿命短，无法达到温度90℃下60年的使用寿命，材料在热老化以后不能承受高剂量γ射线辐照。可是含卤素的阻燃剂，在燃烧时存在高发烟高毒性的弊端，容易造成对生命和财产的二次火灾，并容易造成污染。随着全球对环保越来越重视，对热缩管材料进行无卤阻燃越来越重要。The conventional heat-shrinkable tube has a short service life and cannot reach a service life of 60 years at a temperature of 90 ° C. The material cannot withstand high-dose γ-ray irradiation after heat aging. However, halogen-containing flame retardants have the disadvantage of high toxicity and high toxicity when burned, which easily causes secondary fires to life and property, and is likely to cause pollution. As the world pays more and more attention to environmental protection, it is more and more important to carry out halogen-free flame retardant heat-shrinkable tube materials.
发明内容Summary of the invention
本发明要解决的技术问题在于：提供一种耐长时间高温热老化耐高剂量辐射的塑胶材料及其制备方法。The technical problem to be solved by the present invention is to provide a plastic material resistant to long-term high-temperature heat aging and high-dose radiation and a preparation method thereof.
为了解决上述技术问题，本发明提出以下技术方案：一种塑胶材料，由以下按照重量计的组分组成：In order to solve the above technical problems, the present invention proposes the following technical solution: a plastic material composed of the following components by weight:
Figure PCTCN2014089152-appb-000001
Figure PCTCN2014089152-appb-000001
所述的乙烯-丙烯酸乙酯共聚物(EEA)的丙烯酸乙酯(EA)的含量都25～40％，熔体指数都为8.0～50g/10min；The ethylene-ethyl acrylate copolymer (EEA) has an ethyl acrylate (EA) content of 25 to 40%, and a melt index of 8.0 to 50 g/10 min;
所述受阻酚类抗氧剂由以下物质组成：[β－(3’,5’－二叔丁基-4’-羟基苯基)丙酸]季戊四醇酯(抗氧剂1010)；4,4'-硫联二(6-叔丁基-2-甲基苯酚)(抗氧剂736)；2,2,-硫代-双(4-甲基-6-叔丁基苯酚)(抗氧剂2246-S)； The hindered phenolic antioxidant is composed of [β-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010); 4, 4 '-Thionine (6-tert-butyl-2-methylphenol) (antioxidant 736); 2,2,-thio-bis(4-methyl-6-tert-butylphenol) (antioxidant Agent 2246-S);
所述无卤阻燃剂由红磷、氢氧化铝、氢氧化镁按照一定质量比例复配而成。The halogen-free flame retardant is compounded by red phosphorus, aluminum hydroxide and magnesium hydroxide according to a certain mass ratio.
为了解决上述技术问题，本发明还提出以下技术方案：一种塑胶材料的制备方法，包括以下步骤：In order to solve the above technical problem, the present invention also proposes the following technical solution: a method for preparing a plastic material, comprising the following steps:
步骤1：乙烯-丙烯酸乙酯共聚物100份；乙烯-已烯共聚物20～40份；受阻酚类抗氧剂5～10份；无卤阻燃剂80～120份；在一定温度下使用密炼机混炼塑化，使用开炼机薄通两次，使用双螺杆挤出机造粒获得颗粒状形态的材料；Step 1: 100 parts of ethylene-ethyl acrylate copolymer; 20-40 parts of ethylene-hexene copolymer; 5-10 parts of hindered phenolic antioxidant; 80-120 parts of halogen-free flame retardant; used at a certain temperature Mixing and plasticizing in an internal mixer, using a mill to pass through twice, and granulating using a twin-screw extruder to obtain a material in a granular form;
步骤2：用双螺杆挤出机挤出管材或用注塑机成型各类异型件；Step 2: Extruding the pipe with a twin-screw extruder or molding various shaped parts with an injection molding machine;
步骤3：对器件应用电子束辐照，辐照剂量为180～250kGy，辐照后材料的高分子结构发生交联；Step 3: Applying electron beam irradiation to the device, the irradiation dose is 180-250 kGy, and the polymer structure of the material after irradiation is cross-linked;
步骤4：在120～150℃下利用气压或者机械的方法扩张器件，可获得具有热收缩性能的高分子材料器件。Step 4: The device is expanded by pneumatic or mechanical means at 120 to 150 ° C to obtain a polymer material device having heat shrinkage properties.
本发明具有以下有益效果：The invention has the following beneficial effects:
1、利用本发明所述的塑胶材料无卤阻燃，符合环保要求。1. The use of the plastic material of the invention is halogen-free and flame retardant, and meets environmental protection requirements.
2、本发明的塑胶材料能够耐受高温热老化和高剂量辐照，在经过高温热老化和高剂量辐照处理以后该热缩材料还能承受高温高压水蒸汽以及碱性溶液对材料的破坏。2. The plastic material of the invention can withstand high temperature heat aging and high dose irradiation, and the heat shrinkable material can withstand high temperature and high pressure water vapor and alkaline solution damage to the material after high temperature heat aging and high dose irradiation treatment. .
具体实施方式detailed description
本发明提出一种塑胶材料，由以下按照重量计的组分组成：The invention provides a plastic material consisting of the following components by weight:
Figure PCTCN2014089152-appb-000002
Figure PCTCN2014089152-appb-000002
所述的乙烯-丙烯酸乙酯共聚物(EEA)的丙烯酸乙酯(EA)的含量都25～40％，熔体指数都为8.0～50g/10min。The ethylene-ethyl acrylate copolymer (EEA) has an ethyl acrylate (EA) content of 25 to 40% and a melt index of 8.0 to 50 g/10 min.
所述受阻酚类抗氧剂由以下物质组成：[β－(3’,5’－二叔丁基 -4’-羟基苯基)丙酸]季戊四醇酯(抗氧剂1010)；4,4'-硫联二(6-叔丁基-2-甲基苯酚)(抗氧剂736)；2,2,-硫代-双(4-甲基-6-叔丁基苯酚)(抗氧剂2246-S)。The hindered phenolic antioxidant is composed of [β-(3',5'-di-tert-butyl) -4'-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010); 4,4'-thiobis(6-tert-butyl-2-methylphenol) (antioxidant 736); 2,-Thio-bis(4-methyl-6-tert-butylphenol) (antioxidant 2246-S).
所述无卤阻燃剂由红磷、氢氧化铝、氢氧化镁按照一定质量比例复配而成。The halogen-free flame retardant is compounded by red phosphorus, aluminum hydroxide and magnesium hydroxide according to a certain mass ratio.
制备所述塑胶材料的制备方法，包括以下步骤：The preparation method of preparing the plastic material comprises the following steps:
步骤1：乙烯-丙烯酸乙酯共聚物(EEA)100份；乙烯-已烯共聚物20～40份；受阻酚类抗氧剂5～10份；无卤阻燃剂80～120份；在一定温度下使用密炼机混炼塑化，使用开炼机薄通两次，使用双螺杆挤出机造粒获得颗粒状形态的材料；Step 1: 100 parts of ethylene-ethyl acrylate copolymer (EEA); 20-40 parts of ethylene-hexene copolymer; 5-10 parts of hindered phenolic antioxidant; 80-120 parts of halogen-free flame retardant; Mixing and plasticizing at a temperature using an internal mixer, using a mill to pass through twice, and granulating using a twin-screw extruder to obtain a material in a granular form;
步骤2：用双螺杆挤出机挤出管材或用注塑机成型各类异型件；Step 2: Extruding the pipe with a twin-screw extruder or molding various shaped parts with an injection molding machine;
步骤3：对器件应用电子束辐照，辐照剂量为180～250kGy，辐照后材料的高分子结构发生交联；Step 3: Applying electron beam irradiation to the device, the irradiation dose is 180-250 kGy, and the polymer structure of the material after irradiation is cross-linked;
步骤4：在120～150℃下利用气压或者机械的方法扩张器件，可获得具有热收缩性能的高分子材料器件。Step 4: The device is expanded by pneumatic or mechanical means at 120 to 150 ° C to obtain a polymer material device having heat shrinkage properties.
实施例1Example 1
取乙烯-丙烯酸乙酯共聚物(EEA)100份；乙烯-已烯共聚物20份；受阻酚类抗氧剂10份；无卤阻燃剂80份；将上述材料在150℃下反复混炼直至塑化均匀。将材料置于开炼机上薄通两次，破碎材料，使用双螺杆挤出机在温度区间100～150℃范围内挤出造粒。将粒料喂入螺杆挤出机挤出管材，管材在辐照剂量200kGy的电子束辐照下交联，使用气压扩张机将管材的内径括至原来尺寸的3倍，快速冷却定型，可得到热收缩套管。100 parts of ethylene-ethyl acrylate copolymer (EEA); 20 parts of ethylene-hexene copolymer; 10 parts of hindered phenolic antioxidant; 80 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly. The material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder. The pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 200 kGy. The inner diameter of the tube is doubled to the original size by a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
热收缩套管的性能如下：The performance of the heat shrinkable sleeve is as follows:
Figure PCTCN2014089152-appb-000003
Figure PCTCN2014089152-appb-000003
Figure PCTCN2014089152-appb-000004
Figure PCTCN2014089152-appb-000004
实施例2Example 2
取乙烯-丙烯酸乙酯共聚物(EEA)100份；乙烯-已烯共聚物50份；受阻酚类抗氧剂30份；无卤阻燃剂100份；将上述材料在150℃下反复混炼直至塑化均匀。将材料置于开炼机上薄通两次，破碎材料，使用双螺杆挤出机在温度区间100～150℃范围内挤出造粒。将粒料喂入螺杆挤出机挤出管材，管材在辐照剂量180kGy的电子束辐照下交联，使用气压扩张机将管材的内径括至原来尺寸的3倍，快速冷却定型，可得到热收缩套管。100 parts of ethylene-ethyl acrylate copolymer (EEA); 50 parts of ethylene-hexene copolymer; 30 parts of hindered phenolic antioxidant; 100 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly. The material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder. The pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 180 kGy. The inner diameter of the tube is doubled to the original size by a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
热收缩套管的性能如下：The performance of the heat shrinkable sleeve is as follows:
Figure PCTCN2014089152-appb-000005
Figure PCTCN2014089152-appb-000005
实施例3Example 3
取乙烯-丙烯酸乙酯共聚物(EEA)100份；乙烯-已烯共聚物80份；受阻酚类抗氧剂70份；无卤阻燃剂60份；将上述材料在150℃下反复混炼直至塑化均匀。将材料置于开炼机上薄通两次，破碎材料，使用双螺杆挤出机在温度区间100～150℃范围内挤出造粒。将粒料喂入螺杆挤出机挤出管材，管材在辐照剂量160kGy的电子束辐照下交联，使用气压扩张机将管材的内径括至原来尺寸的3倍，快速冷却定型，可得到热收缩套管。100 parts of ethylene-ethyl acrylate copolymer (EEA); 80 parts of ethylene-hexene copolymer; 70 parts of hindered phenolic antioxidant; 60 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly. The material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder. The pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 160 kGy. The inner diameter of the tube is 3 times of the original size using a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
热收缩套管的性能如下：The performance of the heat shrinkable sleeve is as follows:
Figure PCTCN2014089152-appb-000006
Figure PCTCN2014089152-appb-000006
实施例4Example 4
取乙烯-丙烯酸乙酯共聚物(EEA)100份；乙烯-已烯共聚物40份；受阻酚类抗氧剂23份；无卤阻燃剂74份；将上述材料在150℃下反复混炼直至塑化均匀。将材料置于开炼机上薄通两次，破碎材料，使用双螺杆挤出机在温度区间100～150℃范围内挤出造粒。将粒料喂入螺杆挤出机挤出管材，管材在辐照剂量160kGy的电子束辐照下交联，使用气压扩张机将管材的内径括至原来尺寸的3倍，快速冷却定型，可得到热收缩套管。 100 parts of ethylene-ethyl acrylate copolymer (EEA); 40 parts of ethylene-hexene copolymer; 23 parts of hindered phenolic antioxidant; 74 parts of halogen-free flame retardant; repeated mixing of the above materials at 150 ° C Until plasticized evenly. The material was placed on a mill to be thinned twice, the material was crushed, and the pellet was extruded and granulated in a temperature range of 100 to 150 ° C using a twin-screw extruder. The pellets are fed into a screw extruder extrusion tube, and the tube is crosslinked under electron beam irradiation with an irradiation dose of 160 kGy. The inner diameter of the tube is 3 times of the original size using a gas pressure dilator, and the cooling is cooled and shaped. Heat shrink sleeve.
热收缩套管的性能如下：The performance of the heat shrinkable sleeve is as follows:
Figure PCTCN2014089152-appb-000007
Figure PCTCN2014089152-appb-000007

Claims (2)

  1. 一种塑胶材料，由以下按照重量计的组分组成：A plastic material consisting of the following components by weight:
    Figure PCTCN2014089152-appb-100001
    Figure PCTCN2014089152-appb-100001
    所述的乙烯-丙烯酸乙酯共聚物(EEA)的丙烯酸乙酯(EA)的含量都25～40％，熔体指数都为8.0～50g/10min；The ethylene-ethyl acrylate copolymer (EEA) has an ethyl acrylate (EA) content of 25 to 40%, and a melt index of 8.0 to 50 g/10 min;
    所述受阻酚类抗氧剂由以下物质组成：[β－(3’,5’－二叔丁基-4’-羟基苯基)丙酸]季戊四醇酯(抗氧剂1010)；4,4'-硫联二(6-叔丁基-2-甲基苯酚)(抗氧剂736)；2,2,-硫代-双(4-甲基-6-叔丁基苯酚)(抗氧剂2246-S)；The hindered phenolic antioxidant is composed of [β-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] pentaerythritol ester (antioxidant 1010); 4, 4 '-Thionine (6-tert-butyl-2-methylphenol) (antioxidant 736); 2,2,-thio-bis(4-methyl-6-tert-butylphenol) (antioxidant Agent 2246-S);
    所述无卤阻燃剂由红磷、氢氧化铝、氢氧化镁按照一定质量比例复配而成。The halogen-free flame retardant is compounded by red phosphorus, aluminum hydroxide and magnesium hydroxide according to a certain mass ratio.
  2. 一种如权利要求1所述的塑胶材料的制备方法，其特征在于，包括以下步骤：A method of preparing a plastic material according to claim 1, comprising the steps of:
    步骤1：乙烯-丙烯酸乙酯共聚物100份；乙烯-已烯共聚物20～40份；受阻酚类抗氧剂5～10份；无卤阻燃剂80～120份；在一定温度下使用密炼机混炼塑化，使用开炼机薄通两次，使用双螺杆挤出机造粒获得颗粒状形态的材料；Step 1: 100 parts of ethylene-ethyl acrylate copolymer; 20-40 parts of ethylene-hexene copolymer; 5-10 parts of hindered phenolic antioxidant; 80-120 parts of halogen-free flame retardant; used at a certain temperature Mixing and plasticizing in an internal mixer, using a mill to pass through twice, and granulating using a twin-screw extruder to obtain a material in a granular form;
    步骤2：用双螺杆挤出机挤出管材或用注塑机成型各类异型件；Step 2: Extruding the pipe with a twin-screw extruder or molding various shaped parts with an injection molding machine;
    步骤3：对器件应用电子束辐照，辐照剂量为180～250kGy，辐照后材料的高分子结构发生交联；Step 3: Applying electron beam irradiation to the device, the irradiation dose is 180-250 kGy, and the polymer structure of the material after irradiation is cross-linked;
    步骤4：在120～150℃下利用气压或者机械的方法扩张器件，可获得具有热收缩性能的高分子材料器件。 Step 4: The device is expanded by pneumatic or mechanical means at 120 to 150 ° C to obtain a polymer material device having heat shrinkage properties.
PCT/CN2014/089152 2014-10-22 2014-10-22 Plastic material and preparation method therefor WO2016061755A1 (en)

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