Fast Curing Phenol-Formaldehyde Resin Catalyzed by a Complex Catalyst

Abstract:

For increasing the curing rate and decreasing the curing temperature, modified phenol-formaldehyde (PF) resins were synthesized under a complex catalyst. The bonding strength and formaldehyde emission of the plywood bonded by them were measured according to Chinese National Standards methods. The curing behavior was conducted by differential scanning calorimetry (DSC) measurement. The results indicate that PF resins catalyzed by the complex catalyst show more moderate pH values, lower curing temperature and shorter gel time comparing with control ones. Plywood bonded with modified PF resins shows good bonding strength and low formaldehyde emission even at low hot press temperature (110 °C), which is closed to the plywood bonded with normal control PF resin at high hot press temperature (130 °C).

• Periodical: Advanced Materials Research (Volumes 113-116)
• Pages: 2124-2128
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.113-116.2124
• Online since: June 2010
• Authors: Shi Feng Zhang, Jian Zhang Li, Xiao Ying Liu, Yan An Ou, Qiang Gao
• Keywords: Bonding Strength, Complex Catalyst, Curing, Formaldehyde Emission, Phenol Formaldehyde Resin

References

[1] A. Pizzi, A. Stephanou Phenol-formaldehyde wood adhesives under very alkaline conditions. Part I: Behaviour and Proposed Mechanism. Holzforshung, 1994, 48, 35-40.

DOI: 10.1515/hfsg.1994.48.1.35

[2] Pizzi A; Stephanou A. Phenol-formaldehyde wood adhesives under very alkaline conditions. Part II: Esters Curing Acceleration, its Mechanism and Applied Results. Holzforshung, 1994, 48, 150-156.

DOI: 10.1515/hfsg.1994.48.2.150

[3] China State Bureau of Technical Supervision. GB 18580-2001 (Indoor decorating and refurbishing materials-Limit of formaldehyde emission of wood based panels and finishing products. Beijing: Standards Press of China, (1999).

[4] Lei H；Pizzi, A；Despres A, et al. Ester acceleration mechanisms in phenol-formaldehyde resin adhesives. J Appl Polym Sci, 2006, 100, 3075-3093.

DOI: 10.1002/app.23714

[5] Linda FL; Anthony CC. Accelerated cure of phenol-formaldehyde by the addition of cure accelerators: Studies with model compounds. J Appl Polym Sci, 2002, 86, 3256-3263.

DOI: 10.1002/app.11106

[6] Kim S; Kim HS; Kim HJ, et al. Fast curing PF resin mixed with various resins and accelerators for building composite materials. Construction and Building Materials, 2008, 22, 2141-2146.

DOI: 10.1016/j.conbuildmat.2007.07.007

[7] Higuchi M; Tohmura S; Sakata I. Acceleration of the cure of phenolic resin adhesives V: Catalytic actions of carbonates and formamide. Mokuzai Gakkaishi. 1994, 40, 604-611.

[8] Park GD; Riedl B; Hsu EW, et al. Differential scanning calorimetry of PF resins cure-accelerated by carbonates. Polym, 1999, 40, 1689-1699.

DOI: 10.1016/s0032-3861(98)00400-5

[9] Pizzi A; Garcia R; Wang S. On the networking mechanisms of additives accelerated PF polycondensates. J Appl Polym Sci, 1997, 66, 255-266.

DOI: 10.1002/(sici)1097-4628(19971010)66:2<255::aid-app6>3.0.co;2-v

[10] Pizzi A; Stephanou A. On the chemistry, behavior, and cure acceleration of phenol-formaldehyde resins under very alkaline conditions. J Appl Polym Sci, 1993, 49, 2157-2170.

DOI: 10.1002/app.1993.070491212

[11] Tohmura S; Higuchi M. Acceleration of the cure of phenolic resin adhesives VI. Cure-accelerating action of propylene carbonate. Mokuzai Gakkaishi. 1995, 41: 1l09-1114.

[12] Zhao LW; Wang CP; Liu Y, et al. Preparation and application of fast curing phenol formaldehyde resin. Constr Build Mater, 2000, 27, 17-21.

[13] Chang RX; Lu RS. Study on reducing pressing time of PF particleboard by using curing agent . Chin Forest Prod Ind, 2002, 29, 16-18.

[14] Li JZ; Zhou Wr; Zhao JJ. The progress of fast-setting phenol-formaldehyde resin wood adhesive. China Adhes, 2003, 12, 61-63.

[15] Ou YN; Li JZ; Lei DD. Progress of fast-curing research of phenol-formaldehyde resin adhesives. Adhes China, 2006, 27, 38-40.

[16] China State Bureau of Technical Supervision. GB/T 17657-1999, Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels. Beijing: Standards Press of China, (1999).