不同胶黏剂竹木复合电热地板的基本特性  

Adhesives used to make bamboo/wood composite electro-thermal plywood

作　　者：黄成建[1] 包永洁[1] 李能[1] 肖瑞崇[1] 吴再兴[1] 陈玉和[1] 

机构地区：[1]国家林业局竹子研究开发中心,浙江杭州310012

出　　处：《浙江农林大学学报》2017年第2期369-373,共5页Journal of Zhejiang A&F University

基　　金：国家林业公益性行业科研专项(201404505);浙江省重大科技专项(2014NM009);浙江省竹子高效加工重点实验室资助项目(2014F10047)

摘　　要：利用酚醛树脂(PF),三聚氰胺改性脲醛树脂(MUF),水性高分子异氰酸酯胶黏剂(API)和环氧树脂(EP)等4种常用胶黏剂,制备竹木复合电热地板材料,对比研究其基本物理力学性能与电热特性。结果表明:PF竹木复合电热地板材浸渍无剥离情况,静曲强度(MOR)和弹性模量(MOE)最高,分别为68.25 MPa和5 670.57 MPa;耐湿热尺寸稳定性均符合标准;电阻值下降率最大,为50.77%;升降温速度最快。API板材浸渍剥离强度不合格;MUF板材的MOR和MOE最低,分别为36.37 MPa和4 458.72 MPa;MUF与API板材耐湿/热尺寸稳定性不合格;EP竹木复合电热地板材电阻下降率最小,为26.66%;20 min为竹木复合电热地板材的快速升降温区间,PE板材的升温速度最快,API板材的降温速度最慢。利用酚醛树脂制备竹木复合电热地板是一种可行的途径。To compare basic physical and mechanical properties and electric heating properties of bamboo/wood composite electro-thermal plywood, four kinds of common adhesives： phenol-formaldehyde（PF）, melamine-urea-formaldehyde（MUF）, aqueous polymer isocyanate（API）, and epoxy（EP）, were applied. The bamboo/wood composite electro-thermal plywood treated by four kinds of adhesives were tested according to the China national standard and industrial standard： GB/T 18103-2013, LY/T 1700-2007. Results showed that the plywood treated by PF did not peel after the immersion test, and its modulus of rupture（MOR）（68.25 MPa） and modulus of elasticity（MOE）（5 670.57 MPa） were highest. The damp and hot dimensional stability of PF plywood was better than standard requirements, and the decreasing rate of resistance was maximal at 50.8%. Also, the heating and cooling rates with PF plywood were fastest. In contrast, all plywood treated by API peeled after the immersion test, and the MOR（36.37 MPa） and MOE（4 458.72 MPa） of MUF plywood were lowest. The damp and hot dimensional stability with both MUF plywood and API plywood failed. The decreasing rate of resistance for EP treated plywood reached 26.7%, which was the lowest among the four adhesives used; the rapid heating and cooling period of bambool wood composite electro-thermal plywood was 20 min. In general, the heating rate of PF plywood was the fastest, and the cooling rate for API plywood was the slowest. Overall, the phenolic resin（PF） was a suitable adhesive to make bamboo/wood composite electro-thermal plywood.

关 键 词：木材科学与技术 胶黏剂 竹木复合 电热地板 碳纤维 

分 类 号：TS653[轻工技术与工程] S781.9[农业科学—木材科学与技术]