科莱恩聚烯烃无卤阻燃剂Exolit AP766
发表时间:2013-12-05 来源:次磷酸铝|磷酸三苯酯TPP|溴代三嗪FR245|羟基锡酸锌|季戊四醇磷酸酯PEPA|八钼酸铵|阻燃剂
全球无卤阻燃剂巨头德国科莱恩公司新推出专用于聚烯烃体系的高效膨胀型无卤阻燃剂Exolit®AP766。该新产品充分结合了科莱恩公司领先业内并独享的“高聚合度、高纯度、100% 晶形II、精细微胶囊化包覆及协效改性”等多项显著技术优势。
Exolit®AP766可应用于PP、PE、PP共聚物、PP共混物的注塑及挤出制件的无卤阻燃改性(包括无卤阻燃PP薄片等)。
Exolit®AP766也可以应用于玻纤增强聚丙烯体系的无卤阻燃。
相比Exolit®AP760等,Exolit®AP766的热稳定性更为出色(Td> 275ºC)、加工窗口更宽、抗水性更好、阻燃效率更高。达到UL 94 V-0/1.6mm, 所需添加量明显减少,从而综合物性得以更好地保持与改善。
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Product Description |
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Exolit AP 766 (TP) is a non-halogenated flame retardant based on phosphorus and nitrogen synergism. The product achieves its flame retardant effect through intumescence. The thermoplastic material foams and crosslinks on exposure to flame and forms a stable char at the surface acting as a barrier. The protective layer provides a heat-insulation effect, reduces oxygen access and prevents dripping of molten polymer. |
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Delivery Specification and Technical Data |
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Characteristics |
Unit |
Target Value |
DS¹) TD²) |
Test Method |
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Phosphorus |
%(w/w) |
23 - 25 |
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(ISO 3706) |
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Water / Moisture |
%(by wt.) |
max. 0.5 |
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(KF titration) |
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Nitrogen |
%(w/w) |
14.4 - 16.4 |
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(Kjehldahl) |
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Density |
g/cm³ |
approx. 1.7 |
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at 20 °C |
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Bulk Density |
kg/m³ |
approx. 600 |
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Decomposition Temperature |
°C |
> 275 |
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(DTA/TG) |
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The technical data are merely meant to describe the product and are not subject to regular monitoring. For further information, please consult our standard delivery specification.
¹) Delivery specification: The product is constantly monitored to ensure that it adheres to the specified values. ²) Technical data: The technical data are used solely to describe the product and are not subject to regular monitoring.
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Applications |
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Applications
Exolit AP 766 (TP) was developed especially for use in polyolefins. It is suited for PP, PE, PP copolymers and PP blends for injection moulding and extrusion applications as well as for glass-fibre-reinforced grades.
Formulation
In PP homopolymer and glass-fiber-reinforced PP, a dosage of 20 to 22 % (by wt.) Exolit AP 766 (TP) is usually sufficient to obtain the UL 94 V-0&nb, sp;classification at 1.6 mm together with GWFI 960°C and GWIT 800°C. The mechanical properties of plastics are slightly altered by addition of Exolit AP 766 (TP) due to the filler like type of the flame retardant. Subject to the polymer grade, processing conditions and glass-fibre-reinforcement the dosage of the flame retardant may vary.
Processing
The optimum conditions for incorporating should be determined in each individual case. Care must be taken to ensure homogeneous dispersion of all components. Both single- and twin-screw extruders are suitable for incorporating the product. The temperature of the polymer melt should not exceed 250°C. To prevent degradation effects by high shear energy, it has proved an advantage to use machines of less shearintensive design. When a water bath is used for cooling the strands, it is advisable to keep the passage through the water bath as short as possible to permit optimum evaporation of any entrained water. In some cases, depending on production conditions, it may be necessary to dry the granules obtained. The mixing and processing methods customary in powder processing of polymers can be used with Exolit AP 765 (TP). The VDI Guideline 2263 “Prevention of dust fires and dust explosions” or the relevant national regulations must be observed. |
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Safety and Handling |
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For regulatory details such as the classification and labeling as dangerous substances or goods please refer to our corresponding material safety data sheet.
Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions. |
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