Physical and Mechanical Properties and Fire-endurance Characteristics of Recycled Particleboards

• 발행기관: 한국가구학회
• 저자명: Jin Suk Suh Tae Hyung Han Joo Saeng Park Jong Young Park
• 간행물 정보: 『한국가구학회지』제19권 제6호, 475~486쪽, 전체 12쪽
• 주제분류: 예술체육 > 미술
• 파일형태: PDF
• 발행일자: 2008.12.30

영문 초록

In this study, fire-retardant chemicals were melt with mixed composition ratios of dibasic ammonium phosphate and each half of boric acid and borax in hot water, in which hammer-milled chips were immersed to increase swelling of waste particleboards. Also, fire-retardant treated particles from sawn lumber chip and recycled particleboard chip were composed in ratio of 70:30 in core layer to improve boards properties. Retention ratio of fire-retardant chemicals for the particles for face layer was high due to high specific surface area, and that of sawn lumber chips was somewhat higher than that of recycled particleboard chips. The mixture of particles from sawn lumber chips and recycled PB of 70:30 in weight ratio exceeded bending strength of 100 kgf/cm2. It seemed that the relatively greater portions of dibasic ammonium phosphate affected adversely to dimensional stability, however fire-retardants treatment resulted in distinct effect lowering formaldehyde emission such as E0 type (0.5mg/ℓ or less) in KS F 3104. In fire-retardancy, the recycled boards with a mixed ratio of dibasic ammonium phosphate to boric acid·borax (50:50 mixture) of 70% to 30% in weight satisfied fire-retardancy 3rd grade in KS F 2271, and also this composition from cone calorimeter test met same standard grade figuring total heat release of 4.6MJ/m2.

목차

INTRODUCTION

MATERIALS AND METHODS

RESULTS AND DISCUSSION

CONCLUSION

REFERENCES

키워드

Fire-retardant chemicals dibasic ammonium phosphate boric acid borax fire-retardant treated particles sawn lumber chip recycled particleboard chip cone calorimeter fire-retardancy 3rd grade