摘要
采用先开环聚合后取代的方法合成了聚二苯胺磷腈 (PDAP) ,将 PDAP与低密度聚乙烯 (L DPE)熔融共混制得复合材料 ,采用傅立叶变换红外光谱 (FT- IR)、广角 X射线衍射 (WAXD)、热重 (TGA)、差示扫描量热 (DSC)、动态热机械分析 (DMTA)等方法 ,对 PDAP/ LDPE共混物的性能进行表征。结果表明 ,L DPE/ PDAP共混物具有比 L DPE更高的热稳定性 ;LDPE/ PDAP共混物出现了两个玻璃化转变 ,相对于纯组分而言发生了偏移 ;广角 X射线衍射表明 LDPE/ PDAP共混物结晶度相对于 LDPE有所降低 ,同时发现有新的晶型出现 ,动态热机械分析表明 L DPE/ PDAP出现了 α、β、γ三个明显的转变 ,并且与
Ring-opening polymerization of hexachlorocyclotriphosphazene to give polydichlorophosphazene followed by substitution reaction to synthesize poly(dianilinephosphazene)(PDAP). The thermal, crystallize and relaxational transition behaviour of PDAP/LDPE blends were studied as a function of blend composition. PDAP/LDPE blends show much more stable than LDPE. The maximum degradation rate of PDAP20 is higher than LDPE by 148 ℃. WAXD results show that the crystallinity of blends are decreased by the addition of PDAP. Three relaxational transition(α,β,γ) was detected by DMTA. The compatibility was further confirmed because a new reflection at 2θ = 23.15° in WAXD and the location of two glass transitions(T g) were moved which was detected by DSC.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第4期125-128,共4页
Polymer Materials Science & Engineering
