Synthesis of Wood Adhesive Derived from the Milk Protein and the Blocked Isocyanate

• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: Yuna Ha Sang-Min Lee Hyang-Yeol Lee
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제30권 제3호, 551~559쪽, 전체 9쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2013.09.30

영문 초록

To investigate the adhesion effect of sodium bisulfite content in making blocked isocyanate, wood adhesive PB-1, PB-2, PB-3 and PB-4 containing sodium bisulfite content of 15%, 22.5%, 30% and 37.5% were synthesized respectively. As a result, when the amount of sodium bisulfite increased in adhesives, the tensile strength was found to be proportionally increased. The final adhesive mixtures were manufactured using a two-components system which are prepared by mixing two separate protein and BI solutions due to the precipitate in the adhesives. As PVA was added to adhesives to increase tenacity, the plywood dehiscence phenomenon after cold pressing process was declined. By addition of PVA, the tensile strength was improved up to 6.5~7kgf/cm2 with BI/protein ratio from 1:6 up to 1:8. Phase separation between milk fat and aqueous layer was disappeared after addition of emulsifier, Tween 20. Additon of Tween 20 showed tensile strength up to 5 ~ 6.5 kgf/cm2 at NCO/protein ratio of 1:12 ~ 1:14 without phase separation.

목차

1. Introduction

2. Materials and Method

3. Results and Discussion

4. Conclusions

REFERENCES

키워드

Wood Adhesive Bisulfite Blocked Isocyanate Formaldehyde-free Adhesives Biopolymer