Jan , A composite yarn comprising one or more ultra high molecular weight polyethylene fibres wrapped around one or more polyurethane polyurea in US patent ,,, light weight body armour is made of woven or non woven fabric composed of filaments of very high molecular weight polymers Bullets
antimony trioxide and zinc oxide are added to a low density flexible and semi flexible polyetherurethane flame retardant foam formulation including the usual I . I) states that zinc dibutyhdiamyl or dibenzyl dithiocarbamates stabilize polyurethane foams against light discoloration and discoloration by flue
Feb , A composite material which is elastic, which exhibits a resistive load under deformation which increases with the rate of deformation, which is unfoamed These products also tend to be heavy due to the relatively high density of the dilatant, which can be above kg m, and suffer from migration of the
Aug , Sandwich structures represent a special form of a laminated composite material or structural elements, where a relatively thick, lightweight and in the University of Florida, Gainesville, Florida, in Southampton University, Southampton, U.K in the Royal Institute of Technology (KTH),
Apr , Therefore, these core materials do not offer the high specific strength needed for lightweight structures in conjunction with the impact resistance and low that incorporating within the foam core a truss structure composed of fiber tows increases the strength of the sandwich panel over a foam or truss core
The plies also are combined with other lightweight elements in a unique manner to lend the desired directional strength characteristics to the blade at various However, it should be underastood that core material having a higher density with respect to honeycomb From the foregoing, it can be clearly understood that
Apr , Suspension Lamp EQUILIBRIUM A suspension lamp made of high density expanded polyurethane with high gloss paint finish Balance is created with a solid counterweight in one end that equals the weight of the rest of the lamp Created by Nuno Teixeira Screenshot
Sep , The invention as defined in claim wherein said grit material is aluminum oxide, silicon carbide or the like having dense, hard, sharp, abrasive grains glass fiber epoxy resin, carbon carbon and the like where the resulting perforated material is used for light weight structural or structural and acoustic
Nov , A high performance door comprising a door shell having a generally planner construction with marginal edges and at least one door skin the group consisting of ultrahigh molecular weight polyethylene, high density polyethylene, polypropylene, polycarbonate, and polyvinylidene chloride.
Sep , The combination of these materials in an armor composite system with the high impact properties of ceramics and the extreme viscoelastic properties of polymers, would out perform any of today s current lightweight rigidized polymeric systems, while maintaining superior lightweight ballistic and
Jun , The prepolymers and semi prepolymers are, however, preferably prepared from the known relatively high molecular weight polyhydroxyl compounds of polyurethane chemistry which have a molecular weight of to about , preferably about to , as determined from the functionality and the
Dec , HPC has a relatively high specific surface area of m g and large total pore volume of cm g , resulting that a weight percent of sulfur in S HPC is up to wt When evaluated Phytic acid derived LiFePO beyond theoretical capacity as high energy density cathode for lithium ion battery.
Mar , The composition of Claim wherein said copolymer of ethylene is present in an amount of from about percent to about percent by weight and is a to about by weight of olefin polymer selected from the group consisting of low density branched polyethylene, high density linear polyethylene,
May , To keep the uniform, light color instead, simply finish Baltic birch with a basic clear top coat of lacquer or polyurethane Thicker If that is only an issue with paperback veneer, I think I would rather use the wood panel veneer just for the sake of higher quality even if there is a marginal price differential.
Jan , The composite material according to claim , wherein said pliability of the composite material is at least higher than that of the fiber containing layer polyamideimides, polybutylene terephthylate, polyester elastomers, linear low density polyethylene, thermoplastic polyurethane, bi axially oriented