木材与玻璃纤维－铅箔材的胶合强度试验

摘要

In order to increase the bonding strength of the wood-Pb foil composites, we studied the bonding properties of the wood-Pb and wood-Pb composites reinforced GF, and discussed the optimum ratio of isocyanates to emulsion adhesive and effect of GF content on the bonding strength between wood-GF/Pb sandwich plates.When the volume ratio between isocya-nates and emulsion adhesive is 1 ∶1, the bond strength is highest, reaching 1.142 2MPa .The bonding strength of the wood-Pb composite is increased with the addition of GF.The bonding strength is increased firstly, and then decreased with the increasing of content of GF.When GF content is 1.5%in weight, the bonding strength is up to a maximum of 1.436 7 MPa.%以异氰酸酯与白乳胶混合液为胶合剂，试验研究木材与纯铅（ Pb）箔、木材与玻璃纤维（ GF）强化Pb基复合箔材的胶合强度，分析胶合剂配比、Pb箔中GF质量分数对木材与Pb基复合箔材胶合强度的影响规律。结果表明：异氰酸酯与白乳胶所配胶合剂对木材与Pb箔有良好胶合作用，二者体积比为1∶1时，胶合强度最高，达到1．1422 MPa；添加GF后，胶合强度均得到提高，随着Pb箔中GF质量分数的增加，先增加后降低，GF质量分数为1．5％时，胶合强度最高，为1．4367 MPa。