| 摘要 |
<p>Filled thermoplastic compositions comprise (a) 30 to 90 parts of homopolymers of ethylene and/or copolymers of ethylene and C3 - C10 alpha-olefins, (b) l0 to 70 parts of homopolymers of ethylene and/or copolymers of ethylene and C4 - C10 alpha-olefins modified by grafting with ethylenically unsaturated carboxylic acids or anhydrides thereof, the blend of (a) and (b) having a melt index of less than 20 dg/min. and (c) 20 to 70 percent, based on the amount of (a) and (b) of a filler. The filler is selected from magnesium hydroxide, calcium hydroxide, alumina trihydrate and hydroxyl-containing carbonates of at least one of magnesium and calcium, and mixtures thereof. The compositions exhibit a useful combination of stiffness and toughness, especially as measured by impact strength and tensile strength.</p> |
