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    • 5. 发明申请
    • THERMOPLASTIC POLYMER COMPOSITION FOR SKELETAL REPLACEMENTS AND METHOD OF ITS PRODUCTION
    • 用于骨骼替代的热塑性聚合物组合物及其生产方法
    • WO2007087760A1
    • 2007-08-09
    • PCT/CZ2007/000007
    • 2007-01-31
    • USTAV MAKROMOLEKULARNI CHEMIE AKADEMIE VED CESKE REPUBLIKYKRULIS ZdenekSTARY ZdenekHORAK, ZdenekPETRTYL Miroslav
    • KRULIS ZdenekSTARY ZdenekHORAK, ZdenekPETRTYL Miroslav
    • C08L13/02A61F2/28
    • C08L23/06A61F2/28A61F2/30756A61F2002/30065A61F2210/0071C08L23/02C08L23/0815C08L23/0823C08L2666/06
    • The invention concerns thermoplastic polymer compositions for skeletal replacements and methods of their production. The composition according to the invention consists of 12 - 91 wt.% of a polyolefm with the glass transition temperature higher than 320 K, which is an ethene - bicyclo[2.2.1]hept-2-ene copolymer with molar concentration of the latter at least 25 % and 75 % at most, of 2 - 72 wt. % of a polyolefm with the glass transition temperature lower than 250 K, which is (i) ethene homopolymer of density at least 0.92 g.cm -3 and 0.97 g.cm -3 at most or (ii) copolymer of ethene with an α-olefin selected from a group consisting of propene, but-1-ene, hex-1-ene, oct-1-ene and dec-1-ene, with density at least 0.85 g.cm -3 and 0.96 g.cm -3 at most or a mixture of ethene homopolymer (i) and ethene - α-olefin copolymer (ii) in any ratio, and of 5-50 wt.% of carbon fibres with the carbon content at least 94 wt.%, density at least 1.80 g.cm -3 and 1.92 g.cm -3 at most and a fibre diameter of at least 4 µm and 9 µm at most. The described composition is prepared by mixing in the melt a polyolefm with the glass transition temperature higher than 320 K and a polyolefm with the glass transition temperature lower than 250 K at a melt temperature of the stirred mixture of at least 430 K. The formed thermoplastic polymer composition is irradiated with γ-rays or accelerated electrons at a dose of at least 20 kGy and 250 IcGy at most, to advantage in inert atmosphere, whereupon the irradiated material is mixed in the melt with carbon fibres at a temperature of at least 430 K. The material can be stabilized against oxidative degradation by admixture of at least 0.1 wt.% of α-tocopherol.
    • 本发明涉及骨架替代物的热塑性聚合物组合物及其生产方法。 根据本发明的组合物由12.91重量%的玻璃化转变温度高于320K的聚烯烃组成,其为摩尔浓度为后者的乙烯 - 双环[2.2.1]庚-2-烯共聚物 至多25%和75%,最多为2-72wt。 玻璃化转变温度低于250K的聚烯烃的%,其是(i)密度至少为0.92g·cm -3和0.97g·cm -3的乙烯均聚物, 或(ii)乙烯与选自丙烯,丁-1-烯,己-1-烯,辛-1-烯和癸-1-烯的α-烯烃的共聚物,密度 至少0.85克/厘米3以上和0.96克/厘米3以上的乙烯均聚物(i)和乙烯-α-烯烃共聚物(ii)的混合物, 以及5-50重量%的碳纤维的碳含量至少为94重量%,密度至少为1.80克/厘米3至1.92克/厘米3, -3至多,纤维直径至多为4μm,最大为9μm。 所述的组合物通过在熔体中混合玻璃化转变温度高于320K的聚烯烃和在至少430K的搅拌混合物的熔融温度下玻璃化转变温度低于250K的聚烯烃来制备。所形成的热塑性塑料 聚合物组合物以至少20kGy和250Icyy的剂量至少用α射线或加速电子照射,在惰性气氛中有利,随后将辐射材料与碳纤维在至少430℃的温度下混合 该材料可以通过至少0.1重量%的α-生育酚的混合来稳定,防止氧化降解。