Presentation is loading. Please wait.

Presentation is loading. Please wait.

化工四 B95504050 劉邦彥 B95504048 彭子軒 B95504052 林文翔. Questions Review Tyler mesh size is the number of openings per (linear) inch of mesh. 1800 mesh = 10 μm.

Similar presentations


Presentation on theme: "化工四 B95504050 劉邦彥 B95504048 彭子軒 B95504052 林文翔. Questions Review Tyler mesh size is the number of openings per (linear) inch of mesh. 1800 mesh = 10 μm."— Presentation transcript:

1 化工四 B 劉邦彥 B 彭子軒 B 林文翔

2 Questions Review Tyler mesh size is the number of openings per (linear) inch of mesh mesh = 10 μm 100~6000 mesh = 3~149 μm

3 Questions Review RochowHydrolysis Cyclization S1 S2 DMDCS XMXCSH2O HCl D4 MD2M RochowMethanolysis S1 S2 Cyclization S3 DMDCS CH3OH HCl CH3Cl D4 MD2M H2O CH3Cl H2O CH3Cl Avoid acid waste,making the process cleaner and more efficient.

4 Ring-Open Polycondensation Yield high polymer from ROP of cyclic oligomer. Allow to synthesis high Mn with great precision. Formation of PDMS from D 4 is commonly used in industry. Two kinds of ROP: Anionic Polymerization Cationic Polymerization

5 Anionic Polymerization Initiation Propagation

6 Anionic Polymerization Catalyst: KOH Condition: 0.01% 140 ℃ Product: Mn: 8.84×10 5 Rxn Time: 90min Conversion: 84% HP conversion: 76% Solubility Problem

7 Cationic Polymerization Initiation Propagation

8 Cationic Polymerization Catalyst: CF 3 SO 3 H H 2 SO 4 Condition: 8.7×10 -4 M 20 ℃ Product: Mn: 1.4×10 5 Rxn Time: 90min Conversion: 85% HP Conversion: 60% Corrosion Problem. Triflic acid: 140,000 NTD/kg

9 Ring-Open Polycondensation Small cyclic siloxane will be formed. [D 4 ] o = 1.19M; [TfOH] 0 = M

10 Viscosity Mn Range: 10 5 ~10 6 Viscosity: At 140 ℃ [cP]: ~10 5 At 25 ℃ [cP]: 10 5 ~10 6 PFR is available.

11 Rochow Process (ChemCAD)

12

13

14 Methanolysis (ChemCAD)

15

16

17 ROP (Aspen Plus)

18

19

20

21 Future Work Reaction constant search. Process model establishment.

22 Reference P. DUBOIS, O. COULEMBIER, and J.-M. RAQUEZ, Handbook of Ring- Opening Polymerization, Wiley-VCH Verlag GmbH & Co. KGaA Weinheim 2009, pp W. T. GRUBB AND ROBERT C. OSTHOF, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 77 (1955) S. P. GUPTA, M. MOREAU, M. MASURE and P. SIGWALT, Polym. J. 29 (1993) E. S. WILKS, Industrial Polymers Handbook, vol.3, Wiley-VCH Verlag GmbH & Co. KGaA Weinheim https://www.spectrumchemical.com/OA_HTML/ibeCSrdSrchResults.j sp?cg=- 200&kw=T2105&ds=0&dr=25&st=kw&cpg=0&minisite=10020&site=&re spid=50577 https://www.spectrumchemical.com/OA_HTML/ibeCSrdSrchResults.j sp?cg=- 200&kw=T2105&ds=0&dr=25&st=kw&cpg=0&minisite=10020&site=&re spid=


Download ppt "化工四 B95504050 劉邦彥 B95504048 彭子軒 B95504052 林文翔. Questions Review Tyler mesh size is the number of openings per (linear) inch of mesh. 1800 mesh = 10 μm."

Similar presentations


Ads by Google