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| Technical Articles
Technical Articles
Passenger Car TyresAlthough at this time all types of tyres were being developed in parallel according to investors wishes, but it soon became obvious that to succeed, one project needed be totally developed before embarking on successive ones. A passenger car pneumatic tyre was chosen to serve as a reference project, as well as being a scale model for truck, off-the-road, military and...
AbstractCerenol polyols are derived from 1,3-propanediol which is a bio-based monomer and would therefore be considered a 100% renewable resource polyol. The 1,3-propanediol is produced from corn sugar using a metabolic engineering process. Cerenol polyols are polytrimethylene ether glycol (PTriMEG) and are produced using the same basic technology as polytetramethylene ether glycol (PTMEG).In...
When the subject of polyurethane tyres crops up from time to time, one assumes immediately of solid tyres, primarily for fork lift trucks or industrial machines driving over rubbish dumps and the like, requiring high penetration resistance and lighter weight. Indeed these have been around for decades and have proved to be extremely useful and even irreplaceable in many cases.Was...
So far, there has been a lack of simulation tools suited to routine polyurethane RIM processes. This could be about to change: The tool presented here has cleared the first test hurdles.Many problems that can occur in injection moulding can be avoided by simulating mould filling in advance. Current commercial software tools are mainly designed to simulate thermoplastic materials. Simulating...
AbstractMOCA (methylene bis-ortho-chloroaniline) is the curative-of-choice for waterproof roof coating in Japan. These coatings are typically hand applied and require long pot-lives. Basic formulations use 3-6% NCO TDI prepolymers and are highly plasticized. However, due to the carcinogenic nature of MOCA, many customers want to move away from MOCA. The major technical challenge is to determine...
Summary A new class of polyols for waterborne two-component polyurethane coatings has been developed. These NOVOS (NO Volatile Organic Solvents) polymers are co-solvent free and combine freedom of formulation with co-solvents with an excellent performance and excellent appearance characteristics. Both the concentration and the type of co-solvent can have a profound effect on film properties in...
This icebear was captured in the piece of wood for at least 1000 years. Only by flooding with puroclear its strength could be rediscovered in its whole clearness and brillance. As explained in the first part of this article in the Septembre issue, both matrix materials EP resins and PU systems will contribute to make composites accessible for large-scale production within the next...
Ever since the industrial use of polyurethanes began, the question of "release agents" has been a challenge in the plastics processing industries. Now Frimo provides a concept that marks a milestone in PU processing. Exclusively among suppliers to the automotive industry Frimo offers the PURe Liner - a clean and economical solution enabling customers to go into series production of PU...
Following the latest press releases and project activities, fibre reinforced technology becomes more and more important. Even if this does not seem to be new, as fibre reinforced technology is said to have high potential for many years, the recent interest - once more driven by the automotive industry - appears to be different in crucial aspects. As a "high-tech" material, the fibre...
1. Philippine and solar thermal energy?Philippine has been producing a diverse range of polyurethane moulded parts since its foundation in 1947: From flexible foam for seating and headrests, semi-rigid foams for armrests or inserts for side airbag covers, to rigid foams for shock absorbers, construction elements, model blocks and much more.Very different characteristics can be achieved with...
