The effects of filler materials on poly(vinyl acetate) emulsion wood adhesives

Emerald - Tập 28 Số 6 - Trang 326-330 - 1999
Lijun Qiao1, Allan J. Easteal1, Clive J. Bolt2, Philip K. Coveny2, Robert A. Franich3
1Chemistry Department University of Auckland Auckland New Zealand
2Coatings & Resins International Ltd, Auckland, New Zealand.
3New Zealand Forest Research Institute, Rotorua, New Zealand

Tóm tắt

Fillers with different chemical properties were used to study their effects on poly(vinyl acetate) (PVAc) emulsion wood adhesives. The elastoplastic behaviour of the filler treated PVAc emulsions was studied using differential scanning calorimetry and dynamic mechanical thermal analysis. The results show that the glass transition temperature (Tg) of the polymer is not changed significantly by the addition of the fillers, while the tensile modulus is changed together with the hardness and stiffness. The viscosity of the emulsions and their performance on wood surfaces are greatly affected by fillers. Fillers with high oil‐absorption capacity increase viscosity to a greater extent. The acidity of the fillers influences the setting time for bonding of the emulsions to wood, and the water resistance, since some chemical reactions can take place during curing.

Từ khóa


Tài liệu tham khảo

Brinson, H.F. (1990), Engineered Materials Handbook, Vol. 3, ASM International, Materials Park.

Brydson, J.A. (1989), Plastics Materials, Butterworth Scientific Publications, London.

Dick, J.S. (1987), Compounding Materials for the Polymer Industries, Noyes Publications, Park Ridge.

Gachter, R. and Muller, H. (1993), Plastics Additives Handbook, Hanser/Gardner Publications, Cincinnati, OH.

Katz, H.S. and Milewski, J.V. (1978), Handbook of Fillers and Reinforcement for Plastics, Section II, Van Nostrand Reinhold, New York, NY.

Kovacevic, V., Lucic, S., Hace, D., Glasnovic, A., Smit, I. and Bravar, M. (1994), “Investigation of the influence of fillers on the properties of poly(vinyl acetate) adhesives”, J. Adhesion, Vol. 47, pp. 201‐15.

Mohsen, R.M. (1992), “Effect of calcium carbonate filler on polyvinyl acetate emulsion as wood adhesive”, Pigment & Resin Tech., pp. 10‐11.

Thông tin
Thông tin xuất bản

Emerald

Tập 28 Số 6

326-330

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