práctica_-viscosimetro

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USO DEL VISCOSIMETRO DE BROOKFIELD

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Sustancia medidaCapsupTemperatura26 C

Velocidad de deformacin (rpm)Lecturas (Agujas)

01020304050607

0.5--67.54120.591.5

1--7445.523102

2--84.551.526113

2.5--87.553.52711.53

4--96.55930.5133.5

5--10061.53213.53.5

10---703415.54

20---83.538165

50----47236

100----58277

% TorqueViscosidad aparente (Centipoise)

rpm03040506070304050607

0.567.54120.591.5135000164000164000180000120000

17445.52310274000910009200010000080000

284.551.5261134225051500520005500060000

2.587.553.52711.533500042800432004600048000

496.55930.5133.52412529500305003250035000

510061.53213.53.52000024600256002700028000

10703415.5414000136001550016000

2083.53816583507600800010000

5047236376046004800

10058277232027002800

% Torquelog % Torque

rpm0304050607log (rpm)0304050607

0.567.54120.591.5-0.301031.829303771.612783861.311753860.954242510.17609126

17445.52310201.869231721.65801141.3617278410.30103

284.551.5261130.301031.926856711.711807231.414973351.041392690.47712125

2.587.553.52711.530.397940011.942008051.728353781.431363761.060697840.47712125

496.55930.5133.50.602059991.984527311.770852011.484299841.113943350.54406804

510061.53213.53.50.6989721.788875121.505149981.130333770.54406804

10703415.5411.845098041.531478921.19033170.60205999

2083.5381651.301031.921686481.57978361.204119980.69897

50472361.698971.672097861.361727840.77815125

1005827721.763427991.431363760.84509804

Pendiente promedio.

Convertimos los centipoise en poise y las rpm en rad/s

Viscosidad aparente en poises(kg/m s)

rad/s0304050607

0.0523513501640164018001200

0.104717409109201000800

0.20943422.5515520550600

0.26179350428432460480

0.41887241.15295305325350

0.52359200246256270280

1.04719140136155160

2.094383.57680100

5.2359877637.64648

10.471975523.22728

Obtencin K (ndice de consistencia)

Despejando KSustituyendo datos:

K

0304050607

10.9063123.7816150.3718150.3718165.0422110.0281

6.2202118.9672146.2975147.9052160.7665128.6132

3.5477119.0912145.1644146.5738155.0300169.1236

2.9611118.1993144.5408145.8917155.3476162.1019

2.0235119.1746145.7870150.7289160.6127172.9676

1.6889118.4202145.6569151.5779159.8673165.7883

0.9633145.3337141.1813160.9052166.0957

0.5494151.9839138.3327145.6133182.0167

0.2615143.7858175.9082183.5564

0.1492155.4959180.9651187.6675

Obtencin del esfuerzo cortante con la frmula:

donde n = 0.19Sustituyendo datos:

Convirtiendo el esfuerzo cortante a dinas/cm2

rad/s0304050607

0.052350.5709706.724858.4726858.4726942.2259628.1504

0.104710.6513774.8333952.8356963.30651047.0722837.6577

0.209430.7430884.84761078.57141089.04331151.87291256.5883

0.261790.7751916.16271120.33571130.80651204.09921256.4518

0.418870.84761010.12391235.69061277.57811361.35321466.0733

0.523590.88431047.18981288.04391340.40331413.70651466.0659

1.047191.00881466.12631424.23691623.21161675.5734

2.09431.15081749.03071591.93271675.71782094.6481

5.235987761.36961969.29032409.23872513.9884

10.47197551.56242429.46792827.39872932.1170

Sustancia medidaCrema de manTemperatura24 C

Velocidad de deformacin (rpm)Lecturas (Agujas)

01020304050607

0.5-----20.53

1-----355.5

2-----626.5

2.5-----71.58

4-----8112.5

5-----9315

10------29

20------54.5

50------71.5

100------81

% TorqueViscosidad aparente (Centipoise)

rpm06070607

0.520.53410000240000

1355.5350000220000

2626.5310000130000

2.571.58286000128000

48112.5202500125000

59315186000120000

1029116000

2054.5109000

5071.557200

1008132400

% Torquelog % Torque

rpm67log (rpm)67

0.520.53-0.301031.311753860.47712125

1355.501.544068040.74036269

2626.50.301031.792391690.81291336

2.571.580.397940011.854306040.90308999

48112.50.602059991.908485021.09691001

593150.698971.968482951.17609126

102911.462398

2054.51.301031.7363965

5071.51.698971.85430604

1008121.90848502

Pendiente promedio.

Convertimos los centipoise en poise y las rpm en rad/s

Viscosidad aparente (poise)

rad/s0607

0.0523541002400

0.1047135002200

0.2094331001300

0.2617928601280

0.4188720251250

0.5235918601200

1.047191160

2.09431090

5.23598776572

10.4719755324

Obtencin K (ndice de consistencia)

Despejando KSustituyendo datos:

K

0607

2.647021651548.91064906.679399

2.105735931662.126741044.76538

1.675163361850.56579776.043717

1.556236131837.76739822.497293

1.332643071519.53666937.985593

1.238034811502.38102969.278076

0.984898761177.78603

0.783532771391.13518

0.57906918987.792174

0.4606706703.322507

Obtencin del esfuerzo cortante con la frmula:

donde n = 0.67Sustituyendo datos:

Convirtiendo el esfuerzo cortante a dinas/cm2

rad/s0607

0.052350.138571582146.351256.4

0.104710.220491613664.852303.62

0.209430.350829466492.332722.59

0.261790.407407067487.1943350.912

0.418870.55820428482.11755235.875

0.523590.648222659738.7746283.08

1.047191.0313761312147.404

2.09431.6409526822827.87

5.235987763.0319992629949.8514

10.47197554.8241332933929.2152

Sustancia medidaRefrescoTemperatura26 C

Velocidad de deformacin (rpm)Lecturas (Agujas)

01020304050607

0.5-------

1-------

2-------

2.5-------

4-------

50.25------

100.5------

201.5------

505.5------

10016.5------

Sustancia medidaMiel de maple

Temperatura26 C

Velocidad de deformacin (rpm)Lecturas (Agujas)

01020304050607

0.5---0.5---

1---10.5--

2---21--

2.5---2.51.25--

4---42--

5--52.5--

10--105--

20--20.510--

50--52.525.25--

100--8851.5--