摘要
试验结果表明差示扫描量热仪 (DSC)能够测得NLFS - 1型捕捉剂与甲醛反应 ,并且这种捕捉剂能够捕捉脲醛树脂胶中的大部分游离甲醛 ,其捕捉量与树脂的摩尔比或游离甲醛量有关。对于低摩尔比 ,不脱水脲醛树脂刨花板和中密度纤维板 ,仅用 5 %捕捉剂就能获得较高的捕捉能力。这些板的游离甲醛释放量均能达到欧洲E1级或国标GB -T11718- 1999A级标准。刨花板后期热处理 ,对板的内结合强度提高明显 。
Results from the differential scanning calorimetry (DSC) analysis indicated that the reaction of NLFS-1 scavenge with formaldehyde could be measured, most of free formaldehyde in UF resin could react with the scavenge, and reacting amount would depend on molar ratio or free formaldehyde of the resin. The scavenge of 5% is high capable of catching formaldehyde in particleboard and medium density fiberboard panels with low molar ratio and without dehydration UF resins, and the formaldehyde emission value can meet European standard E1 or Chinese Standard GB-T11718-1999 Grade A. The IB values could be improved well after post isothermal treatment, but the formaldehyde emission would increase a little.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2002年第2期108-112,共5页
Scientia Silvae Sinicae
基金
ThisworkissupportedbyExcellentUniversityTeacher’sFoundationofChinaEducationMinistry .
