CAJ | 학술논문

采用紫外光照射法,以二苯甲酮（BP）为光引发剂,将丙烯酸（AA）接枝到低密度聚乙烯（LDPE）粉末表面,制备出聚乙烯接枝丙烯酸（LDPE-g-AA）热熔胶.通过红外光谱鉴定接枝物的结构,利用羰基C==O的特征峰（1 712 cm-1）与CH2的特征峰（1 460 cm-1）的面积比值定量测定接枝率.研究LDPE粉末粒径、界面剂用量、紫外光照射时间、引发剂用量和单体用量等工艺条件对接枝率的影响.当紫外光照射时间为15 m in,每100 g LDPE二苯甲酮用量为3 g、AA用量为15 g时,接枝率可达8.0%.最后考察接枝产物的接枝率对金属铁片剥离强度的影响：随接枝率的增加,LDPE-g-AA热熔胶对铁片的剥离强度增大,可达到2.0 kN/m.
채용자외광조사법,이이분갑동（BP）위광인발제,장병희산（AA）접지도저밀도취을희（LDPE）분말표면,제비출취을희접지병희산（LDPE-g-AA）열용효.통과홍외광보감정접지물적결구,이용탄기C==O적특정봉（1 712 cm-1）여CH2적특정봉（1 460 cm-1）적면적비치정량측정접지솔.연구LDPE분말립경、계면제용량、자외광조사시간、인발제용량화단체용량등공예조건대접지솔적영향.당자외광조사시간위15 m in,매100 g LDPE이분갑동용량위3 g、AA용량위15 g시,접지솔가체8.0%.최후고찰접지산물적접지솔대금속철편박리강도적영향：수접지솔적증가,LDPE-g-AA열용효대철편적박리강도증대,가체도2.0 kN/m.
Surface UV photografting of acrylic acid（AA） onto low density polyethylene（LDPE） powder was carried out using benzophenone（BP） as a photoinitiator in the present of UV light,and the hot melt adhesive of LDPE-g-AA was obtained.The structure of LDPE-g-AA was verified with FT-IR,and the graft ratio was determined by the area ratio of characteristic peaks C= =O（1 712 cm-1） to CH2（1 460 cm-1）.Effects of diameter of LDPE powder,interfacial agent content,irradiation time,initiator content and monomer content on the graft ratio were discussed.The results were shown the graft ratio reached 8.0 %,when irradiation time was 15 min,BP content was 3 g/100 g LDPE,and AA content was 15 g/100 g LDPE.Finally,the effect of the graft ratio on steel/steel peel strength was studied,and the peel strength reached 2.0 kN/m and increased with the graft ratio.