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Pebax provides permanent antistatic properties
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Applications
News
New universal black masterbatch gives high quality finish Plasblak UN2000 is a new universal masterbatch from Cabot Plastics that is finding a number of applications where a high gloss jet black pigmentation of thermoplastics is required together with good physical properties. UN2000 can be used with polystyrene, acrylonitrile butadiene styrene (ABS), styrene acrylonitrile (SAN), polyethylene and polypropylene for compounding and injection moulding. The materials used to manufacture the masterbatch are approved by most European health
authorities for food contact. Cabot Plastics says that the product has good dispersion characteristics, making it suitable for technically demanding applications that require a high quality surface finish. Compared with a standard universal masterbatch, the quantity of undispersed particles retained on a 100 mesh screen pack is typically reduced by 80%. Physical properties include a density at 23°C of 1220 kg/m 3 and a melt flow index at 21.6kg/190°C of 60 g/10rain.
New mica-filled plastic goes underground A new plastic from Bayer incorporating mica to provide optimum stiffness is being used for biodegradable plant pots. The shape of the mineral in the polymer makes it ideal for this application. Mechanical properties such as stiffness and toughness can be controlled over a wide range by the use of fillers. Renewable raw materials such as starch or cellulose may also be added. The material, BAK® 105 004, is a mica-filled biodegradable polyester amide. It is semi-crystalline and made of synthetic raw materials. Standard processing technologies, such as injection moulding, thermoforming and extrusion, can be used. Plant pots made from BAK® 105 004 decompose in the soil within a few months after the seedlings have been planted. No plastic waste is left in the soil and there is no need to take the seedlings out of their pots. Decomposition only takes place under the conditions in
soil or compost. It requires an adequately moist environment with bacteria, fungi and minerals. The material then decomposes completely into water, carbon dioxide and humus. Tests have been carried out using 100,000 plant pots to test the decomposition rate in arable land and peaty soil. Bayer says that the results have shown that plant pots made from BAK can be processed as economically as polypropylene (PP) pots of the same thickness. Cycle times are comparably short and despite the use of the fillers, pots can be manufactured with the same thickness as those made with PP. Disposable crockery and cutlery is another application for mineral-filled BAK. Around 200,000 pieces of cutlery were made from BAK for the catering at the Roskilde Music Festival in Copenhagen last year. Rather than collecting and disposing of conventional plastic tableware, BAK can be simply composted along with paper plates and napkins.
Pebax provides permanent antistatic properties Two Pebax ® grades from Elf Atochem are being used as antistatic additives for ABS and many other commodity thermoplastics such as PVC, polyolefins, polystyrene, polybutylene terephthalate (PBT) and polyesters with the addition of a compatibilizing agent, when required. Pebax is the trade name for Elf Atochem's polyether block amide range of engineering
polymers. Initially used for moulded components for computer, electronic and office equipment, Pebax MV 1074 and MH 1657 are now finding new outlets in the packaging of electronic components, as well as automated packaging processes. The Pebax grades work by dissipating electrical charge. The materials have surface resistivities that are below
3 × 109 ohm/cm 2, while the half discharge time is below 1 second. The company says that these Pebax grades are dispersible in 5-10% concentrations and impart permanent antistatic properties to the receiving matrix. The properties remain intact over a wide range of moisture levels, as well as in situations where the end-product's surface is subject to abrasion.
PlasticsAdditives & Compounding April~May 1999
16
According to ElfAtochem, Pebax MV 1074 and MH 1657 have no effect on colours or the flexural modulus of the polymer they are added to. They also do not migrate. The materials are said to be easy-to-use and have good thermal stability, with a breakdown temperature in excess of 400°C- above the processing temperatures of most thermoplastics.
Applications
News
New universal black masterbatch gives high quality finish Plasblak UN2000 is a new universal masterbatch from Cabot Plastics that is finding a number of applications where a high gloss jet black pigmentation of thermoplastics is required together with good physical properties. UN2000 can be used with polystyrene, acrylonitrile butadiene styrene (ABS), styrene acrylonitrile (SAN), polyethylene and polypropylene for compounding and injection moulding. The materials used to manufacture the masterbatch are approved by most European health
authorities for food contact. Cabot Plastics says that the product has good dispersion characteristics, making it suitable for technically demanding applications that require a high quality surface finish. Compared with a standard universal masterbatch, the quantity of undispersed particles retained on a 100 mesh screen pack is typically reduced by 80%. Physical properties include a density at 23°C of 1220 kg/m 3 and a melt flow index at 21.6kg/190°C of 60 g/10rain.
New mica-filled plastic goes underground A new plastic from Bayer incorporating mica to provide optimum stiffness is being used for biodegradable plant pots. The shape of the mineral in the polymer makes it ideal for this application. Mechanical properties such as stiffness and toughness can be controlled over a wide range by the use of fillers. Renewable raw materials such as starch or cellulose may also be added. The material, BAK® 105 004, is a mica-filled biodegradable polyester amide. It is semi-crystalline and made of synthetic raw materials. Standard processing technologies, such as injection moulding, thermoforming and extrusion, can be used. Plant pots made from BAK® 105 004 decompose in the soil within a few months after the seedlings have been planted. No plastic waste is left in the soil and there is no need to take the seedlings out of their pots. Decomposition only takes place under the conditions in
soil or compost. It requires an adequately moist environment with bacteria, fungi and minerals. The material then decomposes completely into water, carbon dioxide and humus. Tests have been carried out using 100,000 plant pots to test the decomposition rate in arable land and peaty soil. Bayer says that the results have shown that plant pots made from BAK can be processed as economically as polypropylene (PP) pots of the same thickness. Cycle times are comparably short and despite the use of the fillers, pots can be manufactured with the same thickness as those made with PP. Disposable crockery and cutlery is another application for mineral-filled BAK. Around 200,000 pieces of cutlery were made from BAK for the catering at the Roskilde Music Festival in Copenhagen last year. Rather than collecting and disposing of conventional plastic tableware, BAK can be simply composted along with paper plates and napkins.
Pebax provides permanent antistatic properties Two Pebax ® grades from Elf Atochem are being used as antistatic additives for ABS and many other commodity thermoplastics such as PVC, polyolefins, polystyrene, polybutylene terephthalate (PBT) and polyesters with the addition of a compatibilizing agent, when required. Pebax is the trade name for Elf Atochem's polyether block amide range of engineering
polymers. Initially used for moulded components for computer, electronic and office equipment, Pebax MV 1074 and MH 1657 are now finding new outlets in the packaging of electronic components, as well as automated packaging processes. The Pebax grades work by dissipating electrical charge. The materials have surface resistivities that are below
3 × 109 ohm/cm 2, while the half discharge time is below 1 second. The company says that these Pebax grades are dispersible in 5-10% concentrations and impart permanent antistatic properties to the receiving matrix. The properties remain intact over a wide range of moisture levels, as well as in situations where the end-product's surface is subject to abrasion.
PlasticsAdditives & Compounding April~May 1999
16
According to ElfAtochem, Pebax MV 1074 and MH 1657 have no effect on colours or the flexural modulus of the polymer they are added to. They also do not migrate. The materials are said to be easy-to-use and have good thermal stability, with a breakdown temperature in excess of 400°C- above the processing temperatures of most thermoplastics.