摘要
采用三丙烯酸丙烷三甲醇酯(TMPTA)作为化学交联助剂,研究其对过氧化苯甲酰(BPO)交联太阳能光伏发电组件用乙烯-醋酸乙烯酯(EVA)封装胶膜的影响。分析结果表明,TMPTA加入到EVA-BPO体系中,起增塑作用,可改善初期流动性,并促进其化学交联固化过程,提高交联效率。TMPTA用量为0～1. 0%时,无转子硫化仪测定最小转矩由0. 14 N·m降至0. 12 N·m,最大转矩由0. 26 N·m增至0. 95 N·m,流动时间由1. 69 min降至0. 88min,固化时间由24. 18 min降至10. 43 min。经溶剂法测得EVA胶膜的交联度由51. 0%增加到98. 45%,拉伸强度由11. 72 MPa增至16. 63 MPa,断裂伸长率由803%降至328%。动态热机械分析表明EVA胶膜的储能模量(E')随TMPTA的含量增加而增加,同时玻璃化转变温度(Tg)向高温偏移。
The effect of trimethylolpropane triacrylate( TMPTA) which used as cross-linked auxiliaries on ethylene-vinyl acetate( EVA) encapsulated film of benzoyl peroxide( BPO) cross-linked solar photovoltaic components was studied. The analysis results show that TMPTA acts as a plasticizing role in the EVA-BPO system. It could improve the initial liquidity, promote the chemical crosslinking solidification process,and improve the crosslinking efficiency. When the amount of TMPTA is 0 ~ 1. 0%,the minimum torque could be reduced from 0. 14 N·m to 0. 12 N·m,the maximum torque increases from 0. 26 N·m to0. 95 N·m,the flow time could reduce from 1. 69 min to 0. 88 min and the curing time reduces from 24. 18 min to 10. 43 min which is measured by the rotor-free vulcanizer. The cross-linked degree of EVA film increases from 51. 0% to 98. 45%,which is measured by solvent method. The tensile strength increases from11. 72 MPa to 16. 63 MPa and the fracture elongation decreases from 803% to 328%. Dynamic mechanical analyses show that the energy storage modulus( E’) of EVA film increases with the increasing of TMPTA dosage,while the glass transition temperature( Tg) shifts to high temperature.
作者
孙会娟
赵晓雅
刘彦彬
SUN Hui-juan;ZHAO Xiao-ya;LIU Yan-bin(Department of Applied Chemistry,Hengshui University,Hengshui 053000,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2019年第4期135-138,共4页
China Plastics Industry
基金
衡水学院校级课题(2018LX24)
河北省科技计划资助项目(17211414)
河北省高等学校科学技术研究项目(Z2017063)
关键词
交联助剂
光伏
封装胶膜
三丙烯酸丙烷三甲醇酯
乙烯-醋酸乙烯酯
Cross-Linked Auxiliaries
Photovoltaic
Encapsulated Film
Trimethylolpropane Triacrylate
Ethylene-Vinyl Acetate
