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페놀수지와 TCA 침전혈분의 혼합접착제가 합판의 성질에 미치는 효과
김영식(Young Sik Kim),이화형(Hwa Hyoung Lee) 한국가구학회 1996 한국가구학회지 Vol.7 No.1
This study was carried out to utilize and to develope the combination adhesive from PF(Phenol formaldehyde adhesive) and TCA(Trichloroacetic acid)-precipitated blood powder for the manufacture of plywood. The results were as following; 1)In dry tensile shear strength of plywood, 100parts of PF (solid content: 20%) added 15parts and 20parts of TCA-precipitated blood powder, 100parts of PF (solid content: 10%) added 25parts of TCA-precipitated blood powder, and UF control showed best value They didn ’ t show the statistical difference. 2)In boil tensile shear strength of plywood, all combination adhesives met the KS standard of boil test. PF(solid content : 20%) added TCA-precipitated blood powder and PF(solid content: 50%) added wood flour filler didn‘t show the statistical difference. 3)In the test of formaldehyde emission, the difusion rate of formaldehyde of all PF-blood combination adhesives showed below 0.5 ppm and met the E-O grade of JIS(Japanese In- dustrial Standard).<br/> <br/> Key words: PF(Phenol formaldehyde adhesive}, TCA(Trichloroacetic acid) -prccipitated blood powder, Plywood, Combination adhesive, Formaldehyde emission<br/>