Liquid crystal polyester resin composition

Liquid crystal polyester resin composition

  • CN 1,377,937 B
  • Filed: 03/26/2002
  • Issued: 12/18/2013
  • Est. Priority Date: 03/28/2001
  • Status: Active Grant
First Claim
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1. a liquid crystal polyester resin compositions, it was at 1000 seconds -1shearing rate and than the apparent melt viscosity at the temperature of high 40 ℃

  • of the yield temperature of said composition, be 10-30 handkerchief second, by by 100 weight part liquid-crystal polyester resins, sneak into the glass fibre that is selected from of 10-70 weight part, wollastonite, the tabular mineral filler that is selected from talcum and mica of the fibrous mineral filler of aluminium borate whisker and potassium titanate crystal whisker and 10-70 weight part and obtaining, and its yield temperature is 270-400 ℃

    , the fiber diameter of described fibrous mineral filler is that 0.5-10 micron and number average fiber length are the 5-90 micron, the average particle size particle size of described tabular mineral filler is the 10-20 micron, the ratio F/P of the mixed volume F of fibrous mineral filler and the mixed volume P of tabular mineral filler establishes an equation under meeting;

    1.6<

    F/P<

    6, wherein, the liquid-crystal polyester resin (B) of the liquid-crystal polyester resin that said composition comprises 100 weight parts (A) and 10-150 weight part, the yield temperature of described liquid-crystal polyester resin (A) is 310-400 ℃

    , the yield temperature of liquid-crystal polyester resin (B) is 270-370 ℃

    , the yield temperature of liquid-crystal polyester resin (A) is 10-60 ℃

    higher than yield temperature and its difference of liquid-crystal polyester resin (B), wherein said liquid-crystal polyester resin (A) and (B) each self-contained following structural unit (I), (II), (III) and (IV), the mol ratio of its (II)/(I) is 0.2 to 1.0, mol ratio [(III)+(IV)]/(II) is 0.9 to 1.1, mol ratio (IV)/(III) is greater than 0 and be less than or equal to 1, the ratio of (IV)/(III) mol ratio α

    in liquid-crystal polyester resin (A) and (IV)/(III) mol ratio β

    in liquid-crystal polyester resin (B) is 0.1 to 0.5, and wherein said liquid-crystal polyester resin (A) and (B) contain respectively the repeated structural unit of the following molecular formula (I) of at least 30 % by mole,

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