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Toughened nylon blend and preparation method thereof

A blend, nylon technology, applied in the field of polymer blending and processing modification, to reduce residual monomers and increase grafting efficiency

Active Publication Date: 2011-07-06
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above patents did not mention the use of POE, PP, and EAA material blends to graft polar monomers as tougheners to toughen nylon.

Method used

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  • Toughened nylon blend and preparation method thereof

Examples

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preparation example Construction

[0023] The preparation method of the toughening agent can be expressed as: after mixing POE, PP, EAA and 50% maleic anhydride and the peroxide initiator uniformly, the material is fed from the main feeding port of the twin-screw extruder Join in the extruder, the maleic anhydride of remaining 50% and peroxide initiator are injected in the extruder in the extruder 3rd zone by metering pump, through extruding granulation and drying, obtain the present invention. toughening agent. Wherein, the temperature of the extruder is set at 100-200°C.

[0024] Preferably, the antioxidant is tetrakis[β-(3,5-di-tert-butyl 4-hydroxyphenyl)propionic acid]pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite A mixture with a mass ratio of 1:1.

Embodiment 1

[0025] Embodiment 1 (toughening agent preparation embodiment)

[0026] The toughening agent component (100%) is calculated by weight percentage: POE 60%, PP 30%, EAA 8%, maleic anhydride 1.6%, dicumyl peroxide 0.4%. Blend the above POE, PP, EAA, 50% maleic anhydride and 50% dicumyl peroxide evenly and then add them to the twin-screw extruder, and dissolve the remaining maleic anhydride and dicumyl peroxide in acetone Finally, it is injected into the third zone of the extruder through a metering pump, and the toughening agent is obtained after extrusion, granulation and drying. The temperature settings of the extruder from the first zone to the tenth zone are: 100°C, 170°C, 180°C, 190°C, 200°C, 200°C, 200°C, 200°C, 200°C, 190°C. The rotational speed of the extruder was 300 RPM, and the length-to-diameter ratio of the extruder was 42.

Embodiment 2

[0027] Embodiment 2 (preparation embodiment of toughened nylon blend)

[0028] The toughened nylon blend is calculated by weight percentage: nylon 6 84.7%, the toughening agent 15% of embodiment 1, antioxidant tetrakis [β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionic acid ] Pentaerythritol ester 0.15%, antioxidant tris (2,4-di-tert-butylphenyl) phosphite 0.15%. The above-mentioned components were added into a high-speed mixer and mixed for 3 minutes, then added into a twin-screw extruder, extruded, granulated and dried to obtain the toughened nylon blend of the present invention.

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Abstract

The invention discloses a toughened nylon blend material, which belongs to the technical field of blending, modification and processing of polymers. The blend material comprises the following raw material components in percentage by weight: 75-95 percent of nylon, 5-24 percent of toughening agent and 0.1-1 percent of antioxidant. A preparation method of the blend material comprises the following steps of: adding the nylon, the toughening agent and the antioxidant into a high speed stirrer according to a certain proportion; uniformly stirring the materials at a high speed and adding the mixture into the extruder; and extruding, pelletizing and drying to obtain the toughened nylon blend material, wherein the toughening agent is prepared by performing polar monomer grafting and modification on the blend of an ethylene-1-octylene copolymer (POE), polypropylene (PP) and an ethylene-acrylic acid (EAA) copolymer. The toughened nylon blend obtained by blending the toughening agent and the nylon has high toughness, well keeps the intensity of nylon per se and greatly expands the application range of nylon.

Description

technical field [0001] The invention belongs to the technical field of polymer blending, processing and modification, in particular to a toughened nylon blend and a preparation method thereof, in particular to an ethylene-1-octene copolymer grafted and modified by a polar monomer The invention relates to a toughened nylon blend made of polymer (POE), polypropylene (PP), ethylene acrylic acid copolymer (EAA) blend as a toughening agent, and a preparation method thereof. Background technique [0002] Polyamide, referred to as PA (polyamide), commonly known as nylon (Nylon), was industrialized in 1939. Due to its excellent comprehensive properties such as high strength, toughness, wear resistance, self-lubrication, wide temperature range, oil resistance and corrosion resistance, nylon has become the earliest engineering plastic variety developed and widely used in the manufacture of various mechanical and electrical components, such as: bearings, Gears, rollers, pulleys, fan b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L51/06B29B9/06
Inventor 刘红旗唐舫成汪加胜范德辉
Owner GUANGZHOU LUSHAN NEW MATERIALS
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