1. Kodchakorn Bokam Nutnaree Tamprateep Patcharaporn Chalopagorn

2. Introduction

3. Products

4. Para Rubber Taxonomic C l a ssification Class : Angiospermae Subclass : Dicotyledoneae Order : Euphorbiales Family : Euphorbiaceae Genus : Hevea Species : brasiliensis Scientific name : Hevea brasiliensis Muell Arg. Common name : Para Rubber

5. HDPE is the high density version of PE plastic . Because it has little branching , giving it stronger intermolecular forces and tensile strength than lower density polyethylene . So It is harder, stronger, more opaque and a little heavier than LDPE, but less ductile . HDPE

6. HDPE HDPE is lighter than water, and can be moulded and joined together HDPE is resistant to many different solvents and has a wide variety of applications

7. Objective To study about appropriate ratio to produce particle board from Para rubber wood flour, coconut flour, and recycled plastic.

8. - Advisors Mr.Sorachai Sae-lim Dr.Chanchai Thongpin Ass . Prof . Dr.Chakrit Sirisinha Acknowledge - The Thailand Research Fund , ( TRF ) - Young Scientist competition , ( YSC2008 )

9. Experiment 1. Production of wood plastic composites 2. Testing - Prepare material - Mixing & Molding composites Method -Impact test -Flexural test -Tensile test -Melt flow index 3. Fill coconut flour

10. 1. Production of wood plastic composites

11. 1.1 Preparing Materials

12. Dry at 75 degree to control moisture less than 5% Crush with grinder Use Screened wood flour > 200 mesh Recycled Plastic Para Wood Flour Preparing Materials

13. 1.2 Mixing & Molding

14. Mixing & Molding Method Mix wood flour and recycled plastic by internal mixer Molding specimen by injection molding ASTM test

17. 2. Testing

18. ASTM standards used

19. Result : 2.1 Tensile Test 886.989 19.890 19.097 20% W ood 592.627 191.235 23.672 10% W ood 589.788 40.836 23.989 P ure Tensile Modulus (MPa) Tensile Elongation (%) Tensile Strength (MPa) Formula

20. Result : 2.2 Flexural Test 1.203 1.230 1.297 Flexural Strength (MPa) 3280.284 20% W ood 1678.083 10% W ood 1435.756 P ure Flexural Modulus (MPa) Formula

21. Result : 2.3 Impact Test

22. Result : 2.4 Melt index test 0.5732 ± 0.056 20 % Wood (g) 0.8790 ± 0.086 10 % Wood (g) 0.7478 ± 0.038 0 % Wood (g) Melt Index (g/10min) Formula

23. Result : 2.4 Melt index test

24. 3. Fill coconut flour

25. Dry at 75 degree to control moisture less than 5% Coconut Flour Crush with grinder Preparing materials

26. Result : 3.1 Tensile Test 578.399 191.235 23.692 10% W ood 540.640 87.342 24.217 5%5% W ood- C oconut Tensile Modulus (MPa) Tensile Elongation (%) Tensile Strength (MPa) Formula

27. Result : 3.2 Flexural Test 1.157 2.293 Flexural Strength (MPa) 1095.891 5%5% W ood- C oconut 1609.318 10% W ood Flexural Modulus (MPa) Formula

28. Result : 3.3 Impact Test

29. Result : 3.4 Melt index test 0.8790 ± 0.086 10 % Wood (g) 0.6008 ± 0.077 5 % 5% Wood-Coconut (g) Melt Index (g/10min) Formula

30. Result : 3.4 Melt index test

33. References Nicole M.Stark.1997 . Effect of Species and Particle Size on Properties of Wood- Flour-Filled Polypropylene Composites. USDA Forest Products Lab. 10-16 American Society for Testing and Materials. 2006. ASTM (online). Available : http://www.astm.org/ [5 January 2550] Craig Clemons. (2002). Wood-Plastic Composites in the United States . [Online].Available: http :// www.fpl.fs.fed.us / documnts /pdf2002/clemo02b.pdf Science Magazine . 2005 . Properties of high-density polyethylene using durian and rubber sawdusts as fillers. 23(2-3): 132-146