Technologies of liquefaction of bamboo and preparation of adhesive

SUN Fengwen, LI Xiaoke, ZHANG Qian

Front. For. China ›› 2008, Vol. 3 ›› Issue (4) : 493-498.

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Front. For. China ›› 2008, Vol. 3 ›› Issue (4) : 493-498. DOI: 10.1007/s11461-008-0076-x

Technologies of liquefaction of bamboo and preparation of adhesive

  • SUN Fengwen, LI Xiaoke, ZHANG Qian
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Abstract

The technology of liquefying processed-waste bamboo with phenol is investigated by single factor trials and an orthogonal design. We studied the preparation technology and properties of adhesives from this phenol-liquefied bamboo with formaldehyde (BPF). The results show that temperature has a significant effect on liquefaction. The effect of the mass ratio of phenol to bamboo comes second and the catalyst dosage within the range of 2%–4% is the least effective. The optimum conditions of liquefaction are as follows: a mass ratio of phenol to bamboo 3.5, a catalyst dosage of 4%, liquefying temperature 145°C and liquefying time 60 min. The liquefaction rate of bamboo reached 99.1%. For the preparation of the adhesive, a mass ratio of liquefied bamboo products to formaldehyde (37%) is 100 to 164.8–199.5, while the ratio 100 to 108.2 is the best. This adhesive has a lower curing temperature than that of normal PF resin. At a hot-press temperature of 130 or 140°C, this new adhesive provides excellent bonding strength of plywood. The most favorable temperature for hot-pressing is 140°C.

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SUN Fengwen, LI Xiaoke, ZHANG Qian. Technologies of liquefaction of bamboo and preparation of adhesive. Front. For. China, 2008, 3(4): 493‒498 https://doi.org/10.1007/s11461-008-0076-x
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