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Hyperbranched polymer modified polyamide composite material and preparation method thereof

A hyperbranched polymer and composite material technology, applied in the field of hyperbranched polymer modified polyamide composite materials and its preparation, can solve the problems of low impact strength, small fiber length, limited performance improvement of nylon materials, etc., to improve processing properties, reduce viscosity, and improve surface quality

Inactive Publication Date: 2017-08-01
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses the Brüggemann copper salt antioxidant to improve the hydrolysis resistance of the material to a certain extent, but the twin-screw extruder is used for direct blending and modification, and the fiber length is very small due to the shearing effect of the screw. The performance improvement of nylon material is limited, especially the impact strength is relatively low

Method used

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  • Hyperbranched polymer modified polyamide composite material and preparation method thereof
  • Hyperbranched polymer modified polyamide composite material and preparation method thereof
  • Hyperbranched polymer modified polyamide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] After drying 56 parts of PA66, 14 parts of PA6, 0.6 part of amine-terminated hyperbranched polyamide, 0.6 part of antioxidant (0.2 part of antioxidant 1098 and 0.4 part of antioxidant 168), 0.6 part of composite anti-hydrolysis agent ( 0.3 parts of polycarbodiimide and 0.3 parts of diisobutyl dithiophosphoroketone), 0.5 parts of composite light stabilizer (0.25 parts of UV531 and 0.25 parts of UV4050), 0.4 parts of lubricant (0.2 parts of ethylene-acrylic acid Copolymerized wax and 0.25 parts of calcium stearate), 0.5 parts of black masterbatch T09242, were sequentially added into the high mixer, and mixed at 40°C for 3 minutes.

[0050] Using melt impregnation pultrusion process, the above mixture is added to the hopper of a twin-screw extruder for heating and melting, wherein the diameter of the screw is 65mm, the length-to-diameter ratio of the screw is 40 / 1, and the mixing and melting temperature is set as: the first section 150°C, The second stage is 235°C, the thi...

Embodiment 2

[0052] With dried 48 parts of PA66, 12 parts of PA6, 0.5 part of amine-terminated hyperbranched polyamide, 0.9 part of antioxidant (0.3 part of antioxidant 1098 and 0.6 part of antioxidant 168), 0.4 part of composite anti-hydrolysis agent (0.2 0.2 parts of polycarbodiimide and 0.2 parts of diisobutyl dithiophosphoroketone), 0.4 parts of composite light stabilizer (0.2 parts of UV531 and 0.2 parts of UV4050), 0.6 parts of lubricant (0.3 parts of ethylene-acrylic acid copolymer Wax and 0.3 parts of silicone), 1.0 parts of black masterbatch T09242, were added to the high mixer in sequence, the mixing temperature was controlled at 40°C, and the mixing was carried out for 3 minutes.

[0053] Using melt impregnation pultrusion process, the above mixture is added to the hopper of a twin-screw extruder for heating and melting, wherein the diameter of the screw is 65mm, the length-to-diameter ratio of the screw is 40 / 1, and the mixing and melting temperature is set as: the first section...

Embodiment 3

[0055] With dried 40 parts of PA66, 10 parts of PA6, 0.4 part of amine-terminated hyperbranched polyamide, 1.0 part of antioxidant (0.34 part of antioxidant 1098 and 0.66 part of antioxidant 168), 0.2 part of composite anti-hydrolysis agent ( 0.1 part of polycarbodiimide and 0.1 part of diisobutyl dithiophosphoroketone), 0.3 part of composite light stabilizer (0.15 part of UV531 and 0.15 part of UV4050), 0.8 part of lubricant (0.4 part of pentaerythritol stearin Acetate and 0.4 parts of silicone), 1.5 parts of black masterbatch T09294, were added to the high mixer in sequence, the mixing temperature was controlled at 40°C, and the mixing was carried out for 3 minutes.

[0056] Using melt impregnation pultrusion process, the above mixture is added to the hopper of a twin-screw extruder for heating and melting, wherein the diameter of the screw is 65mm, the length-to-diameter ratio of the screw is 40 / 1, and the mixing and melting temperature is set as: the first section 150°C, T...

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Abstract

The invention provides a hyperbranched polymer modified polyamide composite material and a preparation method thereof. The hyperbranched polymer modified polyamide composite material is prepared from 40 to 56 parts of PA66, 10 to 14 parts of PA6, 0.4 to 0.6 part of hyperbranched polymer, 30 to 50 parts of continuous glass fiber, 0.6 to 1.0 part of antioxidant, 0.2 to 0.6 part of compound hydrolysis resisting agent, 0.3 to 0.5 part of compound light stabilizer, 0.4 to 0.8 part of lubricant and 0.5 to 1.5 parts of black master batch. The raw materials are mixed, molten, dipped, pulled and extruded to be prepared into the hyperbranched polymer modified polyamide composite material. According to the hyperbranched polymer modified polyamide composite material disclosed by the invention, amine terminated hyperbranched polyamide is utilized as a flow accelerant to be mixed and modified with polyamide to reduce system viscosity, and a melting, pulling and extruding technology is utilized to prepare the continuous glass fiber reinforced polyamide composite material; thus, the hyperbranched polymer modified polyamide composite material has excellent weather resistance and hydrolysis resistance and also has excellent rigidity and impact toughness; furthermore, no glass fiber is exposed on the surfaces of injection molded parts, and application of the glass fiber reinforced polyamide in different fields is met.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a hyperbranched polymer modified polyamide composite material and a preparation method thereof. Background technique [0002] Hyperbranched Polymer (Hyperbranched Polymer) is a kind of randomly branched polymer with a three-dimensional ellipsoidal structure. The three-dimensional structure makes them all have low solution and melt viscosity, good solubility and a large number of modifiable terminal functional groups. Compared with the stepwise and repeated synthesis method of protection and anti-protection of dendrimers, the one-step or quasi-one-step synthesis method of hyperbranched polymers is relatively easy and the cost is significantly lower, so it has more extensive industrial application value. [0003] US Pat.6673870 adopts hyperbranched polymer to improve the tensile properties of polyolefin; Kim, Y.H. (Macromolecules1992,25,5561~5572) finds that in hyperbran...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L87/00C08L79/00C08K13/04C08K7/14C08K5/5398C08K5/132C08K5/3435B29B9/06B29B9/14
CPCC08L77/06B29B9/06B29B9/14B29B2009/125C08L2205/035C08L77/02C08L87/00C08L79/00C08K13/04C08K7/14C08K5/5398C08K5/132C08K5/3435
Inventor 杨桂生蒋超杰姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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