TNAG-1508-FCO40-2066-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1987 — Page 68

FCO40 Hong Kong Department Records 聯邦事務部香港部檔案 All

characteristics.

They

are used to wrap around objects, after

which external heat is applied to form a tight layer of wrapping.

They are used widely in adapters for electric wires and cables

and in protective cladding for oil and gas pipelines.

Foamed polythene materials

are characterized

by even

decomposition temperature of the foaming agent, making it easy to

the surface is soft and smooth.

control. The bubbles are small,

They are used mainly in packaging, building materials, automobile

panels and sports goods.

Rubber products manufactured by radiation cross-linking have

excellent properties. No sulphurization agent is required during

the production process, so materials consumption can be reduced.

The widest application is in the precuring of automobile tyres.

By using synthetic rubber instead of natural rubber, thinning of

displacement in forming can be avoided in some componenets.

Radiation Grafting

monomer

This is the process of using radiation to graft one kind of

onto the high polymer chain composed of another kind of

monomer, similar to the grafting of trees. The grafted polymer

retains the excellent properties of the original polymer, as well

as possessing its own new characteristics. Radiation grafting is

a powerful means of modifying the properties of high polymer.

There are presently more than 350 types of grafted polymer

production.

Products manufactured by radiation grafting include:

Polyethylene

in

ion

exchange material:

Polyethylene-grafted

acrylic

film or its composite films are

used in battery

2

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