低红外发射率黏合剂聚异戊二烯/丙烯腈的制备研究

摘要

P( IP-co-AN) adhesives for thermal infrared stealth was were prepared by emulsion polymerization with iso-prene'( IP) and acrylonitrile( AN) as comonomer,ethylene glycol dimethacrylate(EGDMA) as crosslinking monomer, sodium dodecyl sulfate(SDS) and polyoxyethylene octylphenol ether (TX -30) as surfactant and cumene hydroperox-ide( CHP) -ferrous sulfate as redox initiator system. Structure and infrared emissivity of copolymer characterized by infrared spectroscopy ( FT-IR) , environmental scanning electron microspoic ( ESEM ) and infrared emissivity tester. Studied the infrared spectra of copolymer,compared the infrared absorption of the copolymer and the ternary polyethy-lene-co-propylene rubber ( EPDM) at spectral range of 8 ~ 14 μ,m. Also studied the effect of the crosslinking monomer ratio on infrared absorption and emissivity of copolymer at spectral range of 8 ~ 14 μn. The results showed that P (IP-co-AN ) adhesives at spectral range of 8 - 14 μm was infrared transparent, infrared emissivity was 0.82, and had some value in infrared stealth aspects.%以异戊二烯(IP)、丙烯腈(AN)为共聚单体、乙二醇二甲基丙烯酸酯(EGDMA)为交联单体、十二烷基硫酸钠(SDS)和烷基酚聚氧乙烯醚(TX - 30)为复合乳化剂、过氧化羟基异丙苯(CHP)-硫酸亚铁为氧化还原引发体系,采用乳液聚合法合成了热红外隐身涂层用聚异戊二烯/丙烯腈黏合剂.采用红外光谱仪(FT- IR)、场发射扫描电子显微镜(ESEM)、红外发射率测试仪等对共聚物的结构和红外性能进行了表征.研究了共聚物的红外光谱,比较了共聚物和三元乙丙橡胶( EPDM)在8～14 μm的红外吸收,并研究了共聚物中交联单体比例对共聚物在8 ～14 μm波段的红外吸收和红外发射率的影响.结果表明:聚异戊二烯/丙烯腈黏合剂在8～14 μm波段红外基本透明,红外发射率0.82,能应用于热红外隐身涂层.