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PVA is used as preparation of binders when making ceramics
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Kurt Gandenberger
PVA is used as preparation of binders when making ceramics
Generally speaking, as long as the control temperature is greater than 90 degrees stirring, the concentration can be prepared by about 10-20%of the adhesive according to the molecular weight, but it is not suitable to use the electric furnace to directly heated, which can easily lead to high local temperature and a polymerization reaction [123
Generally speaking, as long as the control temperature is greater than 90 degrees stirring, the concentration can be prepared by about 10-20%of the adhesive according to the molecular weight, but it is not suitable to use the electric furnace to directly heated, which can easily lead to high local temperature and a polymerization reaction [123
We mix with magnetic force until clear.In fact, there are many strategies on the Internet, such as http://gskbs.blog.163.com/blog/stative/1653854200782933625492/ [123.
We mix with magnetic force until clear.In fact, there are many strategies on the Internet, such as http://gskbs.blog.163.com/blog/stative/1653854200782933625492/ [123.More
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First dissolve the PVA powder, 90 degrees, 5 to 10 wt%, water-base. Then prepare ceramic powder (Water-Based), add 1 to 2 wt% PVA Related to the Weight of Ceramic under stirring. Of course, according to the specific, according to the specificsYou need to add more amounts of adhesives.Then use Rotationary EvapoTor to evaporate water to get powder.
First dissolve the PVA powder, 90 degrees, 5 to 10 wt%, water-base. Then prepare ceramic powder (Water-Based), add 1 to 2 wt% PVA Related to the Weight of Ceramic under stirring. Of course, according to the specific, according to the specificsYou need to add more amounts of adhesives.Then use Rotationary EvapoTor to evaporate water to get powder.
First measure the polyethylene glycol and water at a ratio of 1: 9, and then heat the water to the boiling to keep the polyvinylene and stir the water boiling with glass rod until the polyvinyl alcohol is dissolved and then cool at the room temperature.
First measure the polyethylene glycol and water at a ratio of 1: 9, and then heat the water to the boiling to keep the polyvinylene and stir the water boiling with glass rod until the polyvinyl alcohol is dissolved and then cool at the room temperature.
This, let's do it by yourself. Others say their own experience and cannot be unified, so you may not be able to do it yourself even if you give you this.I don't understand the problem, so do it!
This, let's do it by yourself. Others say their own experience and cannot be unified, so you may not be able to do it yourself even if you give you this.I don't understand the problem, so do it!
This is one of the more typical methods of co -concentration for reference: 1.The quantitative water and PVA are put into the reactor, heated to 90 ~ 95 degrees, so that the PVA is fully dissolved. 2.Part of the measured emulsifier AA and the dotter solution to the reaction kettle for half an hour. 3.The temperature drops to 70 degrees, and the quantitative VAC and the remaining AA are added to the reactor at a certain speed, and the dotter solution is regularly supplemented. 4.After the feeding is completed, the temperature increases to 90 ° C for about 1 hour, and then use the vacuum pump to eliminate the residual monomer. 5.Cool to 40 degrees.
This is one of the more typical methods of co -concentration for reference: 1.The quantitative water and PVA are put into the reactor, heated to 90 ~ 95 degrees, so that the PVA is fully dissolved. 2.Part of the measured emulsifier AA and the dotter solution to the reaction kettle for half an hour. 3.The temperature drops to 70 degrees, and the quantitative VAC and the remaining AA are added to the reactor at a certain speed, and the dotter solution is regularly supplemented. 4.After the feeding is completed, the temperature increases to 90 ° C for about 1 hour, and then use the vacuum pump to eliminate the residual monomer. 5.Cool to 40 degrees.
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1.The quantitative water and PVA are put into the reactor, heated to 90 ~ 95 degrees, so that the PVA is fully dissolved.
2.Part of the measured emulsifier AA and the dotter solution to the reaction kettle for half an hour.
3.The temperature drops to 70 degrees, and the quantitative VAC and the remaining AA are added to the reactor at a certain speed, and the dotter solution is regularly supplemented.
4.After the feeding is completed, the temperature increases to 90 ° C for about 1 hour, and then use the vacuum pump to eliminate the residual monomer.
5.Cool to 40 degrees.
1.The quantitative water and PVA are put into the reactor, heated to 90 ~ 95 degrees, so that the PVA is fully dissolved.
2.Part of the measured emulsifier AA and the dotter solution to the reaction kettle for half an hour.
3.The temperature drops to 70 degrees, and the quantitative VAC and the remaining AA are added to the reactor at a certain speed, and the dotter solution is regularly supplemented.
4.After the feeding is completed, the temperature increases to 90 ° C for about 1 hour, and then use the vacuum pump to eliminate the residual monomer.
5.Cool to 40 degrees.
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