CN114644789A - 改性辐照交联乙烯-四氟乙烯共聚物绝缘料 - Google Patents

改性辐照交联乙烯-四氟乙烯共聚物绝缘料 Download PDF

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CN114644789A
CN114644789A CN202011514651.4A CN202011514651A CN114644789A CN 114644789 A CN114644789 A CN 114644789A CN 202011514651 A CN202011514651 A CN 202011514651A CN 114644789 A CN114644789 A CN 114644789A
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tetrafluoroethylene copolymer
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史丛丛
丁子龙
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Cgn Delta Jiangsu Plastics Co ltd
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Abstract

本发明公开了一种改性辐照交联乙烯‑四氟乙烯共聚物绝缘料，由以下重量份的组分组成：乙烯‑四氟乙烯共聚物100份、氟橡胶5~30份、聚偏氟乙烯10~20份、交联剂0.3~8份、N，N’‑双[β‑(3，5‑二叔丁基‑4‑羟基苯基)丙酰]肼0.1~1份、1,3,5‑三(3,5‑二叔丁基‑4‑羟基苄基)异氰尿酸0.5~3份、三氧化二锑1~5份、五氧化二锑1~3份、N,N'‑乙撑双硬脂酰胺0.1~2份、季戊四醇硬脂酸酯0.1~0.5份、吸酸剂5~20份；所述氟橡胶为氟橡胶246、氟橡胶26、氟橡胶23中一种或两种的混合物。本发明改性辐照交联乙烯‑四氟乙烯共聚物绝缘料硬度和弹性模量低，柔软性能和耐弯折性能优异。

Description

改性辐照交联乙烯-四氟乙烯共聚物绝缘料
技术领域
本发明涉及电缆用绝缘材料领域，尤其涉及一种改性辐照交联乙烯-四氟乙烯共聚物绝缘料。
背景技术
乙烯-四氟乙烯共聚物具有优良的介电性、绝缘性能和力学性能，耐辐照，耐开裂，耐老化，耐各种化学溶剂，耐高低温，长期工作温度在-65℃到150℃之间。ETFE树脂经辐照交联后，耐辐射性能，抗拉强度和抗老化性能大大提升，长期工作温度提高到200℃，被大量用于特种电缆绝缘料，如运输、航空、化学和核工厂、油井以及井下的各种线缆和通讯线的绝缘。辐照交联乙烯-四氟乙烯（XETFE）绝缘电线电缆是目前飞机安装线两大主要线种之一。但是在某些空间狭小、弯折幅度较大的特殊应用场所，对XETFE线缆的柔软性和耐弯折性提出了更高的要求。
发明内容
本发明目的在于提供一种改性辐照交联乙烯-四氟乙烯共聚物绝缘料，该改性辐照交联乙烯-四氟乙烯共聚物绝缘料硬度和弹性模量低，柔软性能和耐弯折性能优异。
为达到上述目的，本发明采用的技术方案是：一种改性辐照交联乙烯-四氟乙烯共聚物绝缘料，所述改性辐照交联乙烯-四氟乙烯共聚物绝缘料由以下重量份的组分组成：
乙烯-四氟乙烯共聚物（ETFE） 100份，
氟橡胶 5~30份，
聚偏氟乙烯 10~20份，
交联剂 0.3~8份，
N，N’-双[β- (3，5-二叔丁基-4-羟基苯基)丙酰]肼 0.1~1份，
1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸 0.5~3份，
三氧化二锑 1~5份，
五氧化二锑 1~3份，
N,N'-乙撑双硬脂酰胺 0.1~2份，
季戊四醇硬脂酸酯 0.1~0.5份，
吸酸剂 5~20份。
上述技术方案中进一步改进的技术方案如下：
1. 上述方案中，所述氟橡胶为氟橡胶246、氟橡胶26、氟橡胶23中一种或两种的混合物。
2. 上述方案中，所述交联剂为三烯丙基异氰酸酯、三烯丙基异氰酸酯、三烯丙基异氰酸酯的预聚物、三甲代烯丙基氰酸酯的至少一种。
3. 上述方案中，所述吸酸剂为氧化镁、氧化锌、滑石粉、硬脂酸锌、氧化钙中的至少一种。
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：
本发明改性辐照交联乙烯-四氟乙烯共聚物绝缘料，其基于乙烯-四氟乙烯共聚物100份、N，N’-双[β- (3，5-二叔丁基-4-羟基苯基)丙酰]肼0.1~1份、1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸0.5~3份添加了氟橡胶5~40份、聚偏氟乙烯10~20份，硬度和弹性模量低，柔软性能和耐弯折性能优异。
具体实施方式
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制；术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性；此外，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
下面结合实施例对本发明作进一步描述：
实施例1~4：一种改性辐照交联乙烯-四氟乙烯共聚物绝缘料，所述改性辐照交联乙烯-四氟乙烯共聚物绝缘料由以下重量份的组分组成，如表1所示：
表1
Figure 202267DEST_PATH_IMAGE002
；
实施例1的氟橡胶为氟橡胶246，交联剂为三烯丙基异氰酸酯，吸酸剂为氧化镁；
实施例2的氟橡胶为氟橡胶26，交联剂为三烯丙基异氰酸酯，吸酸剂为氧化锌；
实施例3的氟橡胶为氟橡胶23，交联剂为三烯丙基异氰酸酯的预聚物，吸酸剂为滑石粉；
实施例4的氟橡胶为氟橡胶246，交联剂为三烯丙基异氰酸酯，吸酸剂为氧化锌。
上述改性辐照交联乙烯-四氟乙烯共聚物绝缘料，包括以下步骤获得：
步骤一、将N，N’-双[β- (3，5-二叔丁基-4-羟基苯基)丙酰]肼0.1~1份、1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸0.5~3份、三氧化二锑1~5份、五氧化二锑1~3份、N,N’-乙撑双硬脂酰胺0.1~2份、季戊四醇硬脂酸酯0.1~0.5份、吸酸剂5~20份获得混合物；
步骤二、将步骤一获得的混合物在密炼机密炼15~30分钟，密炼均匀后通过单螺杆挤出机进行造粒，挤出温度100~150℃，烘干后得到浓缩母粒；
步骤三、将得到的所述浓缩母粒与氟橡胶5~30份、聚偏氟乙烯10-20份在密炼机中混练15~30分钟后通过单螺杆挤出机进行造粒，挤出温度100~150℃；
步骤四、将步骤三得到的粒子烘干后，与乙烯-四氟乙烯共聚物100份、交联剂0.3~8份用高混机高速混合4~6min，然后,通过双螺杆挤出机进行挤出造粒，造粒温度230-290℃；
步骤五、获得的粒子进行烘干得到所述改性辐照交联乙烯-四氟乙烯共聚物绝缘料。
对比例1~2：一种乙烯-四氟乙烯共聚物绝缘料，由以下重量份的组分组成，如表2所示：
表2
Figure 57090DEST_PATH_IMAGE004
；
对比例1~2的交联剂为三烯丙基异氰酸酯，吸酸剂为氧化镁。
上述乙烯-四氟乙烯共聚物绝缘料的制备工艺同实施例。
上述实施例1~4制得的改性辐照交联乙烯-四氟乙烯共聚物绝缘料和对比例1~2制得的乙烯-四氟乙烯共聚物绝缘料，性能进行检测，性能如表3所示：
表3
Figure 836828DEST_PATH_IMAGE006
如表3评价结果所示，本实施例制备工艺获得的辐照交联乙烯-四氟乙烯共聚物绝缘料材料硬度和弹性模量远低于对比例中的乙烯-四氟乙烯共聚物绝缘料，柔软性能和耐弯折性能优异。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (4)

1.一种改性辐照交联乙烯-四氟乙烯共聚物绝缘料，其特征在于：所述改性辐照交联乙烯-四氟乙烯共聚物绝缘料由以下重量份的组分组成：
乙烯-四氟乙烯共聚物（ETFE） 100份，
氟橡胶 5~30份，
聚偏氟乙烯 10~20份，
交联剂 0.3~8份，
N，N’-双[β- (3，5-二叔丁基-4-羟基苯基)丙酰]肼 0.1~1份，
1,3,5-三(3,5-二叔丁基-4-羟基苄基)异氰尿酸 0.5~3份，
三氧化二锑 1~5份，
五氧化二锑 1~3份，
N,N'-乙撑双硬脂酰胺 0.1~2份，
季戊四醇硬脂酸酯 0.1~0.5份，
吸酸剂 5~20份。
2.根据权利要求1所述的改性辐照交联乙烯-四氟乙烯共聚物绝缘料，其特征在于：所述氟橡胶为氟橡胶246、氟橡胶26、氟橡胶23中一种或两种的混合物。
3.根据权利要求1所述的改性辐照交联乙烯-四氟乙烯共聚物绝缘料，其特征在于：所述交联剂为三烯丙基异氰酸酯、三烯丙基异氰酸酯、三烯丙基异氰酸酯的预聚物、三甲代烯丙基氰酸酯的至少一种。
4.根据权利要求1所述的改性辐照交联乙烯-四氟乙烯共聚物绝缘料，其特征在于：所述吸酸剂为氧化镁、氧化锌、滑石粉、硬脂酸锌、氧化钙中的至少一种。
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CN102471414A (zh) * 2009-07-13 2012-05-23 旭硝子株式会社 乙烯/四氟乙烯类共聚物
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Title
橡胶工业原材料与装备简明手册编审委员会编著: "《橡胶工业原材料与装备简明手册 原材料与工艺耗材分册》", vol. 1, 北京理工大学出版社, pages: 1047 - 1048 *

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