composites | Mateials tensile modulus
Ds 2200-10P Ds 2200-13P competitor 1 – 13µm competitor w – 13µm
notched charpy
tensile strength Unnotched charpy flexural strength
3B’s new Ds2200-10P 10µm choPPeD stranD graDe Boosts the mechanical ProPerties of PP
cost. No matter which industry sector, tougher thermal stability requirements are frequently cited as a key driver in reinforced thermoplastics demand and innovation. In addition, recyclability and end-of life management are becoming increasingly important.
The best in glass Demand throughout 2010 and at least through the first half of this year grew significantly for the two major segments of the global reinforced thermoplastics market: short glass-fibre reinforced thermoplastics based on chopped strand products and long fibre thermoplastics (LFT) based on long glass rovings. Forecasts for the next two years, according to Martin, are for 4-5% growth in chopped strand and more than 10% in LFTs (more details on the LFTs marketplace can be found in our detailed LFT feature here). Martin also says that the glass fibre supply/demand
far right: Johns man-
ville’s starrov 490 lft roving is designed to reduce odour levels in PP- based lfts
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balance over the next 12 months will be influenced by planned furnace repairs. “The overall trend in the glass fibre industry is definitely toward expansion to meet the drive for lighter weight, greater strength and excellent overall performance in both new and existing growth markets,” he says. 3B introduced two new chopped strand grades and
one for LFTs last year at the Composites Europe exhibition. The company’s Advantex DS2200-10P product is a 10 µm chopped strand glass fibre which is said to further boost the overall performance of PP compounds, extending their range of high-end applica- tions. Proprietary sizing and binding technology are
INjECTIoN WorLD | january/February 2012
www.injectionworld.com
claimed to provide excellent dry-as-moulded (DAM) performance along with a high percentage of property retention after hydrolysis or heat aging. While low-micron diameter glass fibres are widely used in polyamide and polyester resins, their use in PP is innovative and opens up new opportunities in automotive components especially. Examples include semi-structural interior components, under-the-hood applications and highly-loaded technical parts such as engine and gearbox mounts. The combination of the latest sizing technology with 10 µm glass fibre is said to provide an increase in tensile strength of up to 12% compared to current market offerings. Impact resistance is also said to be improved by up to 15%, allowing PP to compete well with other thermoplastic resins when replacing metals in demanding applications. Martin cites specific examples of challenging
commercial applications including the first glass fibre PP serial air intake manifold for VW, rear seat carriers for BMW and pedal carriers for Fiat developed by global PP market leader Borealis. 3B’s other new chopped strand grade is Advantex
DS1120-13P, a 13µm diameter product aimed at general- purpose polyamide applications. It has been developed as a cost-competitive reinforcement for polyamides in applications where hydrolysis resistance is not essential. The chopped strand is designed for use in a broad
range of polyamides including PA6, PA6,6, PA6,10 and PA12, along with their related co-polymers. The chemical sizing and binding technology of the product is said to provide superior performance when measured dry as moulded (DAM) and displays low sensitivity to mould release agents such as stearates. This product also boasts good strand integrity and bulk density, ensuring optimum feeding and dispersion within the resin matrix, according to 3B. Target applications
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