TNAG-1508-FCO40-2066-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1987 — Page 69

diaphragms

or chuck-type battery diaphragms,

and can triple or

quadruple

battery

life.

When

polyvinyl-grafted

2- (N,N-dimethylamino) ethyl methacrylate film is used in a

diffusion

acid waste

or the

dialyser

for the recovery

treatment of waste,

of industrial

dialysis speed and efficiency is doubled or

tripled.

to corrosion,

PTFE-grafted ion exchange film is resistant oxidation, high temperature and contamination. It can be used in the purification of concentrated liquid chromium, the recovery of

and to concentrate zinc and electrolysed copper

king of plastic' successfully solved 'the

nickel ions.

Radiation grafting PTFE'S cohesiveness problem, allowing it to be widely used

guide rails in machine tools,

for

lengthening the time between major

overhauls and increasing service life.

N-hydroxymethyl-acrylamide-grafted

polyester/cotton

mixed

fabric gives

а non-creasing,

dirt resistant

fabric used in

carpets.

The

thermal

shrinkage of

acrylonitrile

was greatly

reduced by the grafting of polyvinyl chloride fibre.

Radiation Polymerisation

Radiation polymerisation is a process whereby monomers

induced by high energy rays to combine to form large

are

molecules.

At present over 350 monomers have been studied, of which about 40 are currently being experimented with.

Polyacrylamide powder prepared by radiation

polymerization

a thickener, a moderator and a dispersal is used as a flocculant, a thickener,

agent.

It is

widely

employed

metallurgy,

paper manufacturing,

3

in the

fields

of

oil,

coal,

sugar industry,

textiles and