표제지
목차
Ⅰ. 서론 8
Ⅱ. 연구사 12
Ⅲ. 재료 및 방법 21
1. 공시재료 21
1) 목분 21
2) 폴리프로필렌 21
3) 첨가제 21
2. 시험방법 21
1) 공시 목분의 화학적 조성분 21
2) WPC 제조 24
3) WPC 물성 29
Ⅳ. 결과 및 고찰 33
1. 목분의 화학조성분 33
2. 인장강도 35
3. 휨강도 47
4. 충격강도 57
5. 수분 흡수도 60
1) 목재 수종과 목분 함량 및 목분 크기의 영향 60
2) 상용화제의 영향 64
3) 수분 흡수도와 두께팽창 66
6. SEM 분석 69
Ⅴ. 결론 71
참고문헌 73
Abstract 78
Table 1. Annual wood flour import amount 10
Table 2. Chemical components of different wood species 34
Table 3. Mechanical properties of WPC reinforced with different wood species, filler loading and particle size 36
Table 4. Correlation between water absorption and thickness swelling of WPC 67
Fig. 1. Tensile modulus of WPC(WF 10-50 wt%). 37
Fig. 2. Tensile strength of WPC(WF 10-50 wt%). 38
Fig. 3. Tensile properties of WPC(Larix, 40-60 mesh). 41
Fig. 4. Tensile properties of WPC(Larix, 80-100 mesh). 42
Fig. 5. Tensile properties of WPC(Quercus, 40-60 mesh). 43
Fig. 6. Tensile properties of WPC(Quercus, 80-100 mesh). 44
Fig. 7. Tensile properties of WPC(Maackia, 40-60 mesh). 45
Fig. 8. Tensile properties of WPC(Maackia, 80-100 mesh). 46
Fig. 9. Flexural modulus of WPC(WF 10-50 wt%). 48
Fig. 10. Flexural strength of WPC(WF 10-50 wt%). 49
Fig. 11. Flexural properties of WPC(Larix, 40-60 mesh). 51
Fig. 12. Flexural properties of WPC(Larix, 80-100 mesh). 52
Fig. 13. Flexural properties of WPC(Quercus, 40-60 mesh). 53
Fig. 14. Flexural properties of WPC(Quercus, 80-100 mesh). 54
Fig. 15. Flexural properties of WPC(Maackia, 40-60 mesh). 55
Fig. 16. Flexural properties of WPC(Maackia, 80-100 mesh). 56
Fig. 17. Impact strength of WPC without MAPP. 58
Fig. 18. Impact strength of WPC with MAPP. 59
Fig. 19. Water absorption of WPC(WF 80-100 mesh). 62
Fig. 20. Water absorption of WPC(WF 40-60mesh). 63
Fig. 21. Water absorption of WPC(WF 80-100mesh) with MAPP. 65
Fig. 22. Correlation between water absorption and thickness swelling of WPC(WF 40-60 mesh) 68
List of Photography
Photo. 1. Twin extruder for compounding composites. 25
Photo. 2. Compounded pellets and pelletizer. 26
Photo. 3. Injection molder for preparing specimens. 27
Photo. 4. Injection molded specimens. 28
Photo. 5. Tensile strength test. 29
Photo. 6. Flexural strength test. 30
Photo. 7. Impact strength test. 31
Photo. 8. Water absorption test. 32
Photo. 9. SEM images of WPC. 70