胶合板甲醛释放限量规定及检测方法比较  

Comparison of the limitation and testing method of formaldehyde emission of plywood according to domestic standards with oversea ones

作　　者：于海霞 方崇荣 郑洪连[2] 马轩 杨柳 王洪艳[3] 

机构地区：[1]浙江省林产品质量检测站浙江省森林资源生物与化学利用重点实验室,浙江杭州310023 [2]常州市产品质量监督检验所,江苏常州213001 [3]浙江省林业科学研究院,浙江杭州310023

出　　处：《南京林业大学学报（自然科学版）》2015年第6期163-168,共6页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：浙江省省院合作林业科技项目(2014SY11)

摘　　要：我国胶合板现行国家标准GB/T 9846于1988年制定,2004年进行了第1次修订。过去20年里,胶合板的甲醛释放水平有较大改善,检测标准有了较多更新。而胶合板国家标准中仅规定了10 L干燥器法,欧美国家广泛采用气候箱法及气体分析法测试,我国标准至今仍难以得到国际的认可。此外,我国的甲醛限量规定也过于宽松,难以满足出口目标国对甲醛测试的要求,为出口胶合板甲醛释放量评价带来一定的困难。目前,我国胶合板产品可以达到低醛甚至无醛级水平,而国家标准仍采用检出限较高的乙酰丙酮法。为适应低醛胶合板检测要求,甲醛溶液定量分析可采用精度更高的酚试剂法或高效液相色谱法。Current national standard for plywood GB/ T 9846 in China was enacted in 1988, and revised for the first timein 2004. The formaldehyde emission level of plywood was reduced greatly and the test method of free formaldehyde wasalso improved in the past 20 years, but the method employed in the national standard was still 10 L desiccator method,which was adopted from Japan non-identically with respect to specimen number, color temperature etc. However, inwestern countries, climate chamber method and gas analysis predominated the test method. So far, our national standardfailed to gain international recognition. In addition, the national standard set a loose limitation on formaldehydeemission, and lead to the difficulty to test on plywood for export purpose which may lead to failure to meet the emissionstandard of formaldehyde of the destination country. Now, plywood product could produce little or no formaldehyde emis-sion,and acetyl acetone method with relative high detection limit was still employed in the standard. In order to test onplywood with low formaldehyde emission, phenol reagent method and high performance liquid chromatography of higheraccuracy could be applied in test.

关 键 词：胶合板 甲醛释放量 检测方法 限量规定 国内外标准 

分 类 号：TS653[轻工技术与工程]