Building Materials, Third Edition
IT 2w s 2w h g 22 ...
2w RHQ p2ITI v 2g 2 2p 222 22E 2w p2ITP f !Eg 2 ...
RHR f2w The addition polymerisation reactions can take place only by the application of heat, light, pressure, or ...
2w RHS g 2 It may be defined as the reaction between functional monomer molecules leadin ...
RHT f2w removal owing to lengthening and shortening of the springs of polymeric chains (elastomer molecule is not ...
2w RHU The latex is obtained by making incisions in the bark of the rubber tree, allowing the sap to flow out. ...
RHV f2w ^22 22 22 Neoprene n —CH — C CH — CH — n CH == CCl — CH == CH | Cl p2ITW2@A x . ...
2w RHW 22 24 2 Ethylene di -isocyanate Ethyline glycol n Polyurethane rubber CH — CH | ...
RIH f2w g 22 The crude rubber is elastic. In cold weather it is elastic whereas soft and sticky i ...
2w RII ITS vesg Plastics are made from resin with or without fillers, plasticisers and pigments. These are ...
RIP f2w Can be moulded to any desired shape or size and have high tensile and compressive strengths. ...
2w RIQ metallic oxides, metal powder (Al, Cu, Pb). Carborundum, quartz are found to be most suitable for extra ...
RIR f2w melts in the heating zone from where it is sent to the mould cavity through nozzle. The mould is kept col ...
2w RIS material is heated to plastic state and is pushed to a die by a screw conveyer (Fig. 16.14 and Fig. 16.1 ...
RIT f2w ITV evsgesyx2yp2vesg Plastics have innumerable applications either to substitute or protect othe ...
2w RIU Rubbers behave similarly. The stress-strain curves for cellulose acetate sheet at various temperatures i ...
RIV f2w @A2 @A2 2 p2ITIW i 22 . 2 2 $ 2 22 ...
2w RIW iigsi (a) What do you understand by polymerisation? Explain the mechanism of polymerisation. (b) Di ...
RPH f2w Pick out the incorrect statement with regards to thermo-plastics. (a) Catalyst are not added (b) Formed ...
IU D2i 22 s g 22y 2 g 222s2 22 ...
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