Actually, gel temperature is an important property when it comes to summer, especially when the temperature is very high because it affects the use of HPMC, and it reduces the property of water retention, so that’s why sometimes we add a little more HPMC than winter when HPMC is used in building materials. Now, let’s show you how to test the gel temperature.
1. testing equipment we need.
2. Test steps:
- get 0.5000 g HPMC
2. put the HPMC into the beaker
3. add about 50 mL hot water into the beaker
4. put the beaker into the cold bath and cool it down
5. pour the solution into the volumetric flask with the capatcity of 250 mL.
6. add the distilled water to make it up to scale mark
7. keep turning it upside down for more than 10 times.
8. pour 50 mL solution into the test tube
9. heat the tube
10. it starts gelling at 72 degrees
11. it totally gel around 82 degrees
12. it is the gel.
13. the gel disappears when it is cool down
So, the gel temperature of this sample is around 82 degrees, and it could works very well in building materials when it’s very hot, if you need high gel temperature HPMC, just contact us, hope this will help you.
