Modified PA6/PA12 alloy material with low water absorption and preparation method thereof
A low water absorption, alloy material technology, applied in the field of polymer material processing, can solve the problems of water absorption and dimensional stability research without PA6/PA12 materials, and achieve the effects of shortening crystallization time, improving physical properties, and increasing crystallization temperature
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[0023] Example
[0024] A modified PA6 / PA12 alloy material with low water absorption, including the following components in parts by weight:
[0025]
[0026] The materials of Examples 1-4 and Comparative Examples 1-5 were prepared according to the following preparation methods:
[0027] (1) Add PA6 and PA12 resins to a high-speed mixer, then add tougheners, lanthanum oxide, antioxidants, and lubricants, and then mix them evenly in a high-speed mixer at room temperature (see Table 1 for specific materials added) , The PA12 resin is an amorphous polyamide resin with a crystallinity between 55-65%);
[0028] (2) Put the mixed material in the same-rotating twin-screw extruder, add the glass fiber in the form of side feeding in the extrusion section process, and then melt and plasticize, extrude, cool, and pellet to obtain polypropylene Composite material; the twin-screw extruder used, the screw diameter is 40-65mm, the length-to-diameter ratio of the screw is 40:1, and the mixing and me...
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