You are here: Home
/ Publication Information
Title: Effect of resin variables on the creep behavior of high density hardwood composite panels
Author: Tang, R.C.; Pu, Jianhua; Hse, C.Y;
Source: In: Hse, Chung-Yun; Branham, Susan J.; Chou, Chun, eds. Adhesive technology and bonded tropical wood products. Taiwan, China: Taiwan Forestry Research Institute: 606-614.
Publication Series: Miscellaneous Publication
Description: The flexural creep behavior of oriented strandboards (OSB) fabricated with mixed high, density hardwood flakes was investigated. Three types of adhesives, liquid phenolic-formaldehyde (LPF), melamine modified urea-formaldehyde (MUF), and LPF (face)/MUF (core) were chosen in this investigation. The resin contents (RC) used were 3.5 percent and 5.0 percent. The flakes prepared from white oak, southern red oak and post oak with a mixed ratio of 1:1:1 were used for the panel fabrication. Results indicated that the panels fabricated with 5.0 percent RC of MUF had highest bending modulus of rupture (MOR), and the group fabricated with 3.5 percent RC of LPF (face)/MUF (core) was the lowest. Significant differences among the modulus of elasticity (MOE) of each resin type and resin content group were not found. Highest internal bond (IB) strength was observed in the specimens with 5.0 percent RC of LPF (face)/MUF (core) whereas lowest one was found in the group with identical resin combination but with a 3.5 percent RC. The flexural creep behavior of the fabricated OSB under a cyclic RH of 65 percent f 95 percent at a constant temperature of 75° F (23.9°C) was also investigated. The frequency of cyclic RH was 96-hour and the duration of load was 794 hours (approx. 1 month) while the duration of recovery (after unloaded) was 286 hours under constant 65 percent RH at 75° F. Results indicated that the creep resistance of OSBs are very sensitive to the cyclic RH of 65 percent f 95 percent at 75° F. MUF-boards performed best in creep resistance; LPF/MUF groups were the weakest. Significant effect of resin content level on the creep resistance in LPF- and MUF-OSBs was not found.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Tang, R.C.; Pu, Jianhua; Hse, C.Y 1993. Effect of resin variables on the creep behavior of high density hardwood composite panels. In: Hse, Chung-Yun; Branham, Susan J.; Chou, Chun, eds. Adhesive technology and bonded tropical wood products. Taiwan, China: Taiwan Forestry Research Institute: 606-614.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility