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    • 7. 发明授权
    • Monofilament of improved vinylidene fluoride-based resin
    • 改进偏二氟乙烯基树脂的单丝
    • US4606144A
    • 1986-08-19
    • US697869
    • 1985-02-04
    • Tohru SasakiKunizoh KidohHiroyuki Endoh
    • Tohru SasakiKunizoh KidohHiroyuki Endoh
    • A01K91/00D01F6/48D02G3/00
    • D01F6/48A01K91/00Y10T428/2913
    • A flexible monofilament of at least 0.08 mm in diameter excellent in transparency, high in impact strength and durability and showing a tensile strength of not less than 30 kg/mm.sup.2 and a modulus of elasticity of 60 to 120 kg/mm.sup.2, which is essentially composed of a vinylidene fluoride-based resin, a polymeric substance and a polyester plasticizer and is prepared by the process comprising the steps of:melt-spinning of a resin composition comprising essentially of 100 parts by weight of said vinylidene fluoride based resin selected from homopolymers of vinylidene fluoride and copolymers thereof; 5 to 15 parts by weight of said polymeric substance selected from homopolymers of methyl acrylate, copolymers comprising at least 85% by weight of methyl acrylate units and at most 15% by weight of isobutylene units and mixture thereof; and 2 to 7 parts by weight of said polyester plasticizer selected from the group consisting of polyesters of 1,100 to 5,000 in molecular weight obtained from an alcohol of 4 to 7 carbon atoms and a carboxylic acid of 4 to 8 carbon atoms and polyesters of 1,500 to 4,000 in molecular weight obtained from a dihydric alcohol of 2 to 4 carbon atoms and a dicarboxylic acid of 4 to 6 carbon atoms, thereby obtaining an unstretched monofilament,stretching the thus obtained unstretched monofilament in a heating medium, andsubjecting the thus stretched monofilament to relaxation thereby obtaining said flexible monofilament.
    • 直径至少为0.08mm的柔性单丝透明度优异,冲击强度和耐久性高,拉伸强度不低于30kg / mm2,弹性模量为60〜120kg / mm2,其基本上组成 偏二氟乙烯基树脂,聚合物和聚酯增塑剂,并且通过包括以下步骤的方法制备:将基本上由100重量份所述偏二氟乙烯基树脂组成的树脂组合物熔融纺丝,所述偏二氟乙烯基树脂选自 偏二氟乙烯及其共聚物; 5至15重量份的选自丙烯酸甲酯的均聚物的共聚物,包含至少85重量%的丙烯酸甲酯单元和至多15重量%的异丁烯单元及其混合物的共聚物; 和2至7重量份的所述聚酯增塑剂,其选自由4至7个碳原子的醇和4至8个碳原子的羧酸获得的分子量为1,100至5,000的聚酯,并且聚酯为1500至 从2至4个碳原子的二元醇和4至6个碳原子的二羧酸获得的分子量为4000,从而获得未拉伸的单丝,将由此得到的未拉伸单丝在加热介质中拉伸,并将由此拉伸的单丝 松弛,从而获得所述柔性单丝。