D&T Online: Contents

D&T Online: Contentsmechanism info

*** FlatOut ! *** Be the first to own this revolutionary product

*** FlatOut ! *** Be the first to own this revolutionary product

Books - Polymers - Plastic Part Design for Injection Moulding : An Introduction

Books - Polymers - Plastic Part Design for Injection Moulding : An Introduction

Acetal Polyoxymethylene � POM

Properties of Acetal Polyoxymethylene –

Polymer Type
Thermoplastic

Advantages
Highly crystalline, more creep resistant than Nylon. Excellent abrasion resistance. Good resistance to solvents (except phenols).Low smoke emission. High gloss surfaces. Lower moisture absorption than Nylons.

Disadvantages
Poor resistance to acids/alkalies (particularly homoploymer). Burns easily, (not available with flame retardants).Limited processing temperature range. Poor UV resistance. High mould shrinkage.

Applications
Gears, bearings, conveyor belt tracks, plumbing fittings, fan blades, pen cases, lock mechanisms, aerosol valves. Spring levers, nuts, screws, video/audio cassette components, disposable lighters, switches

Drying Agent Data

Drying Agent Data

SILICA GEL

SILICA GEL: "Sorb-It� packaged silica gel is made from amorphous silicate. It is a hard, translucent material with an extremely high capacity for moisture at temperatures below 75� F. and at humidity levels above 40%.

Sorb-It� is designed to control moisture levels within packaged products. The function of Sorb-It� when controlling moisture is like a tiny sponge with millions of microscopic pores. Under very low humidity conditions, a small amount of water vapor will be adsorbed in the smallest pores. As humidity increases, the larger pores will begin to fill. For example, at 20% R.H. and 75� F., Sorb-It� can adsorb about 12% its weight in water. At 80% R.H. and 75� F, it can adsorb 35% its weight in water (see Exhibit 1). Unlike a sponge, however, Sorb-It� remains dry even at maximum capacity.

In addition to adsorbing more at higher humidity levels, Sorb-It� will also adsorb more as the time period increases. For example, at 70% R.H. and 75�F, Sorb-It� can adsorb 15% its weight in water within two hours and reach adsorption capacity within eight hours "

DesiccantCity.com: Sorb-It

DesiccantCity.com: Sorb-It

Scientists prove how geckos stick, unlock secrets to making artificial gecko glue

Scientists prove how geckos stick, unlock secrets to making artificial gecko glue

Ink - Jet Texturing � A New Technology for Producing Textured Surfaces

Ink - Jet Texturing � A New Technology for Producing Textured Surfaces
Why Surface Texturing is Used
Defined as ‘the modification of the functional properties of the surface of an object’, surface engineering is typically undertaken to change the physical or visual properties of a surface. These properties, and the reasons for wanting to change them, are many and varied. There may be a requirement to reduce (or even increase) the friction between mating parts, to improve the formability of a metal sheet, to increase the surface area of a substrate (perhaps to improve the adhesion of a coating), or to enhance its decorative appeal and reduce its sensitivity to surface scratches. Surface engineering is frequently taken to mean the application of chemical processes such as coating, nitriding or ion implantation. Yet all of the above benefits, and more, can also be achieved by surface texturing - modifying the topography of the surface instead of its chemistry.

The Ink-Jet Texturing Process

toto antifogging film

A newly developed hygroscopic film
for antifogging of mirrors

MSDS Information

MSDS Information

Pieces of the puzzle

Pieces of the puzzle

Moisture absorbing cloth

Belloasis
moisture absorbing cloth

BBC NEWS | cooking up a digital future

BBC NEWS | Technology | Cooking up a digital future"We're playing with temperature, with pH, and with salinity," MIT's Director of Counter Intelligence Research, Ted Selker, told BBC World's Click Online programme.

"We're really starting to think about what we can sense, but more importantly how we can use the sensors to change the way people do things, and improve them.