polymer gels一种聚合凝胶 The following information was part of our display for the SET96 and SET98 Scientific Power to the People Exhibition, The Galleries, Bristol, 20th and 21st March 1998.
) p/ Y6 n9 H8 l7 F& E' N( a1 X A POLYMER is a very long molecule rather like a very long piece of string.
# o; H4 @* _5 E- T5 ] The borax joins two molecules together to make a large network - rather like a flexible scaffolding. This is cross-linking.
8 P% b+ h9 T# J' B1 ~# ? This turns the fluid dissolved polymer into a GEL.1 Z: T$ \- a/ D4 R6 T
In oilwells water is pushed down to push oil up. If this breaks through to the production well bore, the well will just produce water. A solution is to block the rock pores with polymer gel to make the well produce oil again. These gels can be made from naturally occurring sugar-based polymers such as Guar and they can be cross-linked with Cobalt or Chromium.
9 B* d* I4 y% i# C# m Other everyday examples of polymer gels are to be found in non-drip emulsion paints, foods, car tyres and agrochemicals.3 [! g8 |( w c: [( E3 t
The polymer that we are using is POLYVINYL ALCOHOL and we are joining the strands together with BORAX. This gel, when coloured, is sold in toyshops as SLIME. |
发表于 2012-8-14 23:21:39
