Polycarbonate-acrylic

Shrouds are recommended in the front and on the top of the terminals of each feeder to provide protection to the operator from live parts. They will also prevent the tools falling inadvertently from an upper module onto the live terminals of the lower module. Look closely at Figure 13.34 for these features, where in the front is provided a typical translucent shroud to enable a check of the terminals, without opening the shroud. On top is provided another shroud to prevent the terminals from falling tools. If the shroud is of polycarbonate (acrylic has a low temperature index), it should be suitable to withstand a temperature of up to 200°C without deformation. This temperature may be reached during a fault at the terminals. 

Currently, these tests are of no practical value to the designer and the only approach to the problem of scratch, mar, and abrasion resistance is to simulate actual performance needs. For optical purposes, a cast sheet in the allyl family of plastics known as CR39 has been used as a standard of comparison in evaluating scratch and mar resistance of a material. The CR39 is used for eye lenses and other optical products where the advantages of plastics are a consideration. Coatings have been developed for polycarbonate, acrylics, and other plastics that dramatically improve the scratch and mar resistance of these materials. 

Glazing, domes, skylights... consume 20% of all polycarbonate. Acrylic sheets account for 66% of total acrylics. 

There is no true correlation between the two methods as we can see in Figure 3.5, which displays the notched versus un-notched impact strength of various grades of polycarbonates, acrylics, polyphenylene sulfide and nylon. 

Replace glass with break-resistant glazing materials such as polycarbonate, acrylic, or laminated glass. 

Polycarbonate Acrylic Second-order nonlinear optics Tripathy et al., 1996... 

The visor is a key component of any chemical splash suit. Not only mustthe visor material withstand the effects ofthe chemicals and maintain good visibility, but a good seal between the visor and the suit is essential and the seal to the fabric portion of the suit should be checked frequently. Normally visors are made ofmaterials such as polycarbonates, acrylics, fluorinated ethylene propylene (FEP), and clear poly vinyl chloride. The first two of these are subject to crazing upon contact with some chemicals. Covering these two types of material with a thin layer of FEP is sometimes done to protect them. 

D. Faulkner, Environmental Stress Cracking of Polycarbonate and a Polycarbonate Acrylic Blend by Windshield Washer Fluids. SAE Technical Paper 851628 (1985). doi 10.4271/851628... 

A tab gate is an extension of the part that connects with the runner, thereby locating shear stresses outside the part. For this reason, tab gates are used with flat, thin parts and for materials such as polycarbonate, acrylics, SAN, and ABS, which develop high levels of shear stress during molding. 

Use Plastics—fluorocarbons, polycarbonates, acrylics, ABS, polypropylenes, polyethylenes and nylons, with approval of site project coordinator. 

The cyclic diether, 1,3-dioxolane, is recommended by Ferro Corporation as a more benign solvent substitute for chlorinated organic solvents, such as methylene chloride, 1,2-dichloroethane, and 1,1,1-trichloroethane, and for ketones, such as methyl ethyl ketone (MEK). This ethylene glycol-based ether is a suitable solvent under neutral and basic conditions in several major-use areas. It is a powerful solvent for softening and dissolving polymers made from polar monomers, for example, polycarbonates, acrylates, cellulosics urethanes, phenoUcs, nitriles, urea-formaldehydes, and alkyds, as well as polyesters, vinyl epoxys, and halogen-containing polymers. As a reaction solvent it is added as a component to a special quaternary ammonium or phosphonium salt solution for preparation of a vesicular phenoxy resin. Other beneficial uses for the solvent dioxolane, include ... 

AQ dyes are used for a broader spectrum of resins than that of the azo dyes. They are heavily used in styrene, ABS, SAN, polycarbonate, acrylics, cellulosics, polyesters etc. and are well known for excellent weatherability in the transparent mode such as red taillights, but in tint applications the light stability is greatly reduced. Heat, photo and chemical stability vary considerably as the pendants on the base AQ structure are substituted. Awareness of these differences is essential in color formulating. Most AQ dyes are not recommended for polyamide applications as these resins react with amine pendants and can remove the color. We are... 

Typical Use Wood, GRP, metal, polycarbonate acrylic panels. Typical Use Wood, floor tiles, metals, glass, plastics (PVC, vinyl, polystyrene), masonry. ... 

Common name Polycarbonate/acrylic alloy, permanently antistatic, flame retardant ... 

Kulkami and others at Americhem, Inc., Cleveland, OH, USA described blends of P(ANi) with thermoplastics such as PVC, Nylon and PMMA, where P(ANi) loadings of 15 to 30 v/v% gave claimed conductivities of 10 to 20 S/cm [273] these blends have been described in an earlier chapter. An alternative method of fabrication of such conductive blends described by these workers was dispersion in a liquid (solvent or sol), usable with such thermoplastics as PET, polycarbonate, acrylics and PETG. These workers found that the requirements for antistatic or electrostatic discharge (ESD) coatings of ca. 10 to 10 Q/square resistivity and transparency in the >40% region could be met easily with these P(ANi)/thermoplastic blends. 

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