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MMT/PVA/木材复合材料的物理力学性能
杉木 蒙脱土(MMT) 聚乙烯醇(PVA)
2012/8/4
分别采用一步法和两步法制备聚乙烯醇(PVA)和有机蒙脱土(MMT)的复合处理液,复合处理液通过满细胞法真空加压浸注杉木试材,制备MMT/PVA/杉木材复合材料(PVDMW)。测定了PVDMW的吸水率、抗胀缩率(AS)、表面硬度、顺纹抗压强度和抗水流失性,同时采用红外光谱分析(FT-IR)对两种方法机理进行分析。研究结果表明:一步法复合材料(PVDMW-1)的AS和抗水流失性明显优于两步法复合材料(...
Influence of PVA emulsion on leaching of boron and copper from wood and efficacy on wood decay fungi
boron copper fixation Norway spruce PVA emulsion wood preservation
2009/11/27
Boron compounds are very effective fungicides, but they leach from wood in wet environments, unfortunately. In order to improve boron fixation, boric acid, borax and copper(II) sulphate were combined ...
Physical Properties and Wood Bonding Performance of Polyvinyl Acetate Emulsion with Acetoacetylated PVA as Protective Colloid
acetoacetylated PVA PVAc dynamic viscoelastic property crosslink wood bonding strength
2009/3/5
Recently, acetoacetylated PVA (AAPVA) was introduced where part of the PVA side-chain was replaced with the reactive acetoacetyl group. A waterproof-type polyvinyl acetate emulsion (EPVAc) was synthe...
Crosslinking Reactions between Isocyanate Compounds and Acetoacetylated PVA in Water and in Organic Solvent Systems
acetoacetylated PVA crosslinking density DMSO dynamic viscoelastic property swelling
2009/3/5
The crosslinking reaction between isocyanate compounds (pMDI) and acetoacetylated PVA (AAPVA) with various degrees of acetoacetylation or partially saponified PVA were investigated in a dimethylsulfox...
