Study on fast curing PF resin added by compound curing agent

doi:10.3969/j.issn.1000-2006.2015.01.020

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (01): 109-113.doi: 10.3969/j.issn.1000-2006.2015.01.020

Previous Articles Next Articles

Study on fast curing PF resin added by compound curing agent

CHEN Yuzhu, CHU Fuxiang^*, FAN Dongbin, QIN Tefu

Key Laboratory of Wood Science and Technology of State Forestry Administration, Research Institute of Wood Industry,Chinese Academy of Forestry, Beijing 100091, China

Online:2015-01-31 Published:2015-01-31

Abstract

Abstract: In order to meet fast curing requirements of PF resin without pot life and wet shear strength,compound curing agents were obtained by combination of single curing agent, including methylolureas(MMU), propylene carbonate(PC), sodium carbonate(Na₂CO₃), magnesium hydrate(Mg(OH)₂).By comparing the properties of PF resins added with single with the compound curing agents, it indicated that: Although single curing agent improved the on wet shear strength of plywood, but pot lifes was too short to meet the production requirement of at least 4 hours. The compound curing agent of MMU+Na₂CO₃ showed obvious effect on fast curing PF resin by shortening the hot pressing time from 330 s to 270 s, and the plywood wet shear strength reached the class Ⅰ of Chinese industry standard(≥0.7 MPa). The compound curing agent of MMU+Na₂CO₃ was a suitable fast curing agent which could be used in plywood production.

CLC Number:

TQ314

CHEN Yuzhu, CHU Fuxiang, FAN Dongbin, QIN Tefu. Study on fast curing PF resin added by compound curing agent[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2015, 39(01): 109-113.

References

[1] Tomita B, Hse C. Syntheses and structural analyses of cocondensed resins from urea and methylolphenols[J]. Mokuzai Gakkaishi, 1993, 39(11): 1276-1284.
[2] Zhao C, Pizzi A, Garnier S. Fast advancement and hardening acceleration of low-condensation alkaline PF resins by esters and copolymerized urea[J]. Journal of Applied Polymer Science, 1999, 74(2): 359-378.
[3] Tomita B, Hse C Y. Condensation of urea with methylolphenols in acidic conditions[J]. Polymer Chemistry, 1992, 30(8):1615-1624.
[4] Fan D, Chang J, Li J, et al. ¹³C-NMR study on the structure of phenol-urea-formaldehyde resins prepared by methylolureas and phenol[J]. Journal of Applied Polymer Science, 2009, 112(4): 2195-2202.
[5] Pizzi A, Stephanou A. Completion of akjakube cure acceleration of phenol-formaldehyde resins-acceleration by organic anhydrides[J]. Journal of Applied Polymer Science, 1994, 51(7): 1351-1352.
[6] Du Z Y, Sun X B. Fast curing phenol-formaldehyde resin catalyzed by a complex catalyse[J].Advanced Materials Research, 2010(113-116): 2124-2128.
[7] Fan D B, Chang J M, Gou J S, et al. On the cure acceleration of oil-phenol-formaldehyde resins with different catalysts[J]. Journal of Adhesion, 2010, 86(8): 834-843.
[8] Fan D B, Li J Z, Chang J M. On the structure and cure acceleration of phenol-urea-formaldehyde resins with different catalysts[J]. European Polymer Journal, 2009, 45(10): 2849-2857.
[9] Park B D, Riedl B. C-13-NMR study on cure-accelerated phenol-formaldehyde resins with carbonates[J]. Journal of Applied Polymer Science, 2000, 77(6): 1284-1293.
[10] Lorenz L F, Conner A C. Accelerated cure of phenol-formaldehyde by the addition of cure accelerators: Studies with model compounds[J]. Wood Adhesives, 2000, 86(13):391-395.
[11] Tohmura S, Higuchi M. Acceleration of the cure of phenolic resin adhesives. 6: Cure-accelerating action of propylene carbonate[J]. Mokuzai Gakkaishi, 1995, 41(12): 1109-1114.
[12] Park B D, Riedl B, Hsu E W, et al. Application of cure-accelerated phenol-formaldehyde(PF)adhesives for three-layer medium density fiberboard(MDF)manufacture[J]. Wood Science And Technology, 2001, 35(4): 311-323.
[13] Pizzi A, Garcia R, Wang S. On the networking mechanisms of additives-accelerated phenol-formaldehyde polycondensates[J]. Journal of Applied Polymer Science, 1997, 66(2): 255-266.
[14] Fan D B, Chang J M, Gou J S, et al. On the cure acceleration of oil-phenol-formaldehyde resins with different catalysts[J]. Journal of Adhesion, 2010, 86(8): 834-843.
[15] Grenierloustalot M F, Larroque S, Grande D, et al. Phenolic resins 2: Influence of catalyst type on reaction mechanisms and kinetics[J]. Polymer, 1996, 37(8): 1363-1369.
[16] Zhao C H, Pizzi A, Garnier S. Fast advancement and hardening acceleration of low-condensation alkaline PF resins by esters and copolymerized urea[J]. Journal of Applied Polymer Science, 1999, 74(2): 359-378.
[17] Pizzi A, Stephanou A, Antunes I, et al. Alkaline PF resins linear extension by urea condensation with hydroxybenzylalcohol groups[J]. Journal of Applied Polymer Science, 1993, 50(12):2201-2207.
[18] 范东斌. 尿素、生物油-苯酚-甲醛共缩聚树脂的合成、结构与性能研究[D].北京:北京林业大学, 2009.Fan D B. Synthesis, structure and properties of urea-or biomass oil-phenol-formaldehyde cocondensed resins[D]. Beijing:Beijing Forestry University, 2009.

Metrics

Comments

www.nldxb.njfu.edu.cn

Edited ＆ Published by Editorial Department of Nanjing Forestry University(Natural Sciences Edition)
Address： No.159 Longpan Road,Nanjing 210037 Jiangsu,P.R.China
E-mail ：xuebao@njfu.edu.cn , xuebao@njfu.com.cn
Telephone +86-25-85428247,85427076
Distributed by China International Book Trading Corporation P.O. Box 399, Beijing ,P.R. China

Study on fast curing PF resin added by compound curing agent

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 1

Recommended Articles

Metrics

Comments

Author

Reader

Reviewer