March 2012 | AIChE

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March 2012

Polyethylene Tank Inspection

March 5, 2012

This guide will help users identify different material types and provides basic instructions on how to gather information if a tank has been damaged. Also included are pictures of over-exposure to ultraviolet rays and tank failure examples.

Plastics or Metal? Which Material is Right for Your Pump? (TL-167)

March 5, 2012

The article “Plastics or Metal? Which Material is Right for Your Pump?” (TL-167) that has been added to the firm’s technical library. It discusses the reasons thermoplastic pumps are becoming more popular, explains the plastics’ superior resistance to corrosion, and reports on studies that have shown them to outlast stainless steels and exotic metals when handling abrasive and other aggressive fluids.Vanton Pump & Equipment Corp.

Raprex 400 Coatings

March 5, 2012

Raprex 400 coatings are modified linear low-density polyethylene (LLDPE) or high-density polyethylene (HDPE) powders that can be applied to steel, aluminum, copper and other metals via standard powder-coating technologies. While polyethylene normally exhibits poor bonding strength to metal, Raprex 400 coatings use a proprietary process that imparts improved adhesion and coating characteristics to the base polyethylene, through oxidation, without the addition of chemical additives or a metallocene catalyst.

The Tigerguard coating system prevents floor erosion in general traffic areas

March 5, 2012

The Tigerguard coating system prevents floor erosion in general traffic areas. It fills in surface defects and provides a durable protection barrier that resists mars, scratches, abrasion, chemicals and impact. The system is easy to apply, requiring no special skills, and can be installed by inhouse maintenance staff.

TLCTCO Chemical Transfer Hose

March 5, 2012

The new TLCTCO chemical transfer hose consists of a bonded smooth-i.d. Chemfluor FEP fluoropolymer liner; multiple EPDM rubber internal layers; double-plycord pressure reinforcement; double- helix, high-tensile-strength carbon steel wire support; and an externally convoluted EPDM outer cover (thus the –CO designation, for “convoluted outer”). Its increased flexibility is characterized by a reduced-force-to-bend and a small minimum bend radius. It is available in 3/4-in.- to 2-in.-i.d. sizes, and is rated for use at temperatures ranging from –40°F to 350°F.

HDPE HTA 108 is a New Grade of High-Density Polyethylene (HDPE)

March 5, 2012

Reducing material costs through downgauging creates a need for higher-stiffness products. HDPE HTA 108 is a new grade of high-density polyethylene (HDPE) that has been developed to improve stiffness and barrier properties in coextrusion or monolayer polyethylene (PE) films. It also improves processability when blended with either linear low-density polyethylene (LLDPE) or metallocene linear low-density polyethylene (mLLDPE). With a density of 0.961, only small amounts of HDPE HTA 108 are required in LDPE, LLDPE and mLLDPE to significantly increase stiffness.

AccelMax SC Masterbatches

March 5, 2012

AccelMax SC masterbatches are high-strength color concentrates designed to offer loadings of up to 80–90% and very low letdown ratios for many applications. They are suitable for polyamide (PA), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), acrylonitrile butadiene styrene (ABS), polypropylene (PP), polyethylene (PE), PBT/ABS blends, and ABS/polycarbonate blends. The colorants, which are supplied as pellets, are available in a range of standard colors, and can be color-matched and compounded in any quantity required.

Flexane Fast-cure Rubber Repair Putty

March 5, 2012

Flexane fast-cure rubber repair putty is a urethane compound that bonds to rubber, metal, concrete, fiberglass and wood and cures to a tough, medium-hard rubber. Tear resistance is typically 265 pli (ASTM D624); maximum elongation is typically 450% (ASTM D412). Packaged in no-mess, resealable 400-mL cartridges, the putty is mixed as dispensed from hand-held manual or pneumatic dispensers with static mixing nozzles, or it can be applied with a trowel. It has a working time of 8 min, is tack-free in just 30 min, and is ready for light-duty service in 3 h or less.

NexPrene 9000 series of thermoplastic vulcanizates (TPVs)

March 5, 2012

Nine materials, ranging in hardness from 40 Shore A to 50 Shore D, make up the NexPrene 9000 series of thermoplastic vulcanizates (TPVs). A proprietary curing technology results in materials that offer processing and performance advantages for products that require soft-touch surfaces in bright colors. The materials are non-hygroscopic, so they do not need to be dried prior to processing by injection molding or extrusion. A wide range of colors can be achieved with low pigment loadings, including some pastel shades that might not be possible with conventional TPVs.

Bioscience Laboratory Products Catalog

March 5, 2012

Tools for accelerating, simplifying and enhancing research are presented in this catalog. It includes detailed product and application sections for protein research, drug discovery, laboratory water systems and life science filtration, as well as a technical handbooks section with applications, protocols and troubleshooting information.

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