methyl methacrylate, the constituent monomer of pmma pieces of perspex, the windscreen of a german plane shot down during world war ii pmma is a strong, tough, and lightweight material. it has a density of – g/cm , [ ] [ ] which is less than half that of glass. [ ] it also has good impact strength,...
of man-made fibres, manufacture of artificial fibers manufacture ofother chemical products manufacture of paints, varnishes and similar coatings, printing ink and mastics manufacture of pharmaceutical preparations and basic pharmaceutical products manufacture of photographic chemical material manufacture...
a polymer energy chain with those of a high-strength pull rope which is incorporates. inside the chain, the pull rope transfers the pull force to the mounting brackets and the structure. as a result, the cables are kept completely free of strain. the modular e-chain madeof high-performance polymer...
of all iglidur® polymer plain bearings. the igus® plain bearings range includes sleeve bearings, flange bearings, thrust washers, piston rings, clip-on plain bearings and many other designs. iglidur® plain bearings always offer a solution – either from the catalogue range or as custom-made plain bearing...
of all iglidur® polymer plain bearings. the igus® plain bearings range includes sleeve bearings, flange bearings, thrust washers, piston rings, clip-on plain bearings and many other designs. iglidur® plain bearings always offer a solution – either from the catalogue range or as custom-made plain bearing...
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is a sweet, viscous food substance made by bees and some related insects . [ ] bees produce honey from the sugary secretions of plants (floral nectar ) or from secretions ofother insects (such as honeydew ), by regurgitation , enzymatic activity, and water evaporation. bees store honey in wax structures...
&kdudfwhulvwlfv�ri�sodvwlf� manufacturing or burning ofplastics cause emissions . of toxic gases and release a toxic carcinogen called dioxin.the dioxin affects the function of the reproductive and immune system. it also causes hormonal disruption and growth problems. it has the ability to accumulate...