Effect of electron beam irradiation on properties of dimeric acid polyamide/amorphous poly-α-olefin copolymer blends

WANG Zhi

doi:10.11889/j.1000-3436.2022-0132

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Effect of electron beam irradiation on properties of dimeric acid polyamide/amorphous poly-α-olefin copolymer blends

RADIATION CHEMISTRY | 更新时间：2023-04-20

- Effect of electron beam irradiation on properties of dimeric acid polyamide/amorphous poly-α-olefin copolymer blends
- Journal of Radiation Research and Radiation Processing Vol. 41, Issue 2, Pages: 20203(2023)
- 作者机构：
  
  1.上海长园电子材料有限公司上海 201802
- 作者简介：
  
  WANG Zhi (male) was born in April 1975, and obtained his master's degree from East China Normal University in 2005, majoring in low smoke halogen free polymer and modified hot melt adhesive, E-mail: wsir95@163.com
- 基金信息：
- DOI：10.11889/j.1000-3436.2022-0132
  CLC：
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WANG Zhi. Effect of electron beam irradiation on properties of dimeric acid polyamide/amorphous poly-α-olefin copolymer blends. [J]. Journal of Radiation Research and Radiation Processing 41(2):020203(2023)
DOI：

WANG Zhi. Effect of electron beam irradiation on properties of dimeric acid polyamide/amorphous poly-α-olefin copolymer blends. [J]. Journal of Radiation Research and Radiation Processing 41(2):020203(2023) DOI： 10.11889/j.1000-3436.2022-0132.

摘要

为拓宽非晶型α-烯烃共聚物在热缩材料行业的应用，本文通过引入二聚酸型聚酰胺改性非晶型α-烯烃共聚物，采用中能电子加速器研究吸收剂量对二聚酸型聚酰胺/非晶型α-烯烃共聚物共混体系的软化点、凝胶含量、DSC特性和流变学性能的影响。结果表明：当二聚酸型聚酰胺的质量占比≤25%时，二聚酸型聚酰胺/非晶型α-烯烃共聚物共混体系呈现辐射降解特性，共混体系的软化点、储能模量,G,'和损耗模量,G,''随温度的变化曲线交点对应的温度,T,j,、特性黏度|,η,*|随吸收剂量增加而降低；在振荡变温测试过程中，相位角随吸收剂量的升高而增加，出现明显的黏弹性转变。当二聚酸型聚酰胺的质量占比≥50%时，共混体系呈现辐射交联特性，共混体系的黏弹性转变受温度的依赖程度和特性黏度|,η,*|受频率的依赖程度随着吸收剂量升高都减弱。

Abstract

To broaden the application of amorphous poly-α-olefin copolymer in the heat shrinkable material industry, in this study, effects of absorbed dose on the softening point, gel content, DSC properties and rheological properties of dimer acid polyamide/amorphous α-olefin copolymer blends were studied. When the mass ratio of dimer acid polyamide was ≤25%, dimeric acid polyamide/amorphous α-olefin copolymer blends presented radiation degradation characteristics, the softening point, the corresponding temperature ,T,j, of the intersection of the storage modulus ,G′, and loss modulus ,G,″ with temperature change, and intrinsic viscosity |,η,*| decreased with absorbed dose increasing; during the oscillating temperature test, the phase angle increased obviously with absorbed dose increasing, which showed viscoelastic transition characteristics. When the mass ratio of dimer acid polyamide was ≥50%, the blends presented radiation crosslinking characteristics, the dependence of viscoelastic transition on temperature and the dependence of intrinsic viscosity on frequency were reduced with absorbed dose increasing.

关键词

非晶型α-烯烃共聚物二聚酸型聚酰胺电子束辐照性能

Keywords

Amorphous poly-α-olefin copolymerDimeric acid polyamideElectron beam irradiationProperty

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