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Tenacity reinforced nylon and its preparing method

A nylon and toughening technology, applied in the field of toughened nylon and its preparation, can solve the problems of reducing the strength of nylon alloys, and achieve the effect of reducing the range

Inactive Publication Date: 2006-11-08
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The use of these compatibilizers can improve the toughness of nylon alloys, but at the same time the addition of these second components reduces the strength of nylon alloys

Method used

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  • Tenacity reinforced nylon and its preparing method

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Embodiment Construction

[0016] The process conditions used in the following embodiments are: control the temperature of each section of the screw: the feeding section is 180°C, the plasticizing shear section is 230°C-240°C, and the head is 230°C; the screw speed is controlled at 120rmp, and the reaction of the material in the screw is controlled. The residence time is 70-100s. Put the pre-mixture according to the formula into a twin-screw extruder for extrusion, water cooling, pelletizing, and drying. Splines were prepared by injecting standard dimensions. The samples were tested for tensile strength, bending strength and notched Izod impact strength according to GB / T1040, GB9341 and GB1843 respectively; the composition and proportioning of each embodiment are shown in Table 1.

[0017] Example / parts by weight

[0018] In Table 1, EPDM-g-MAH is ethylene-propylene rubber grafted with maleic anhydride, and POE-g-MAH is ethylene-1-octene copolymer grafted with maleic anhydride.

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Abstract

The present invention relates to toughened nylon with maleic anhydride grafted vinyl-1-octene copolymer as toughening agent and its preparation process. The toughened nylon consists of nylon 60-90 wt%, maleic anhydride grafted vinyl-1-octene copolymer 10-30 wt%, polyolefin 0-10 wt%, and assistant 0.02-2 wt%, with the assistant being calcium stearate or stearic cid. Using maleic anhydride grafted vinyl-1-octene copolymer as toughening agent can reach high toughening effect while producing less strength decrease of the nylon alloy.

Description

technical field [0001] The invention relates to a toughened nylon and a preparation method thereof, in particular to a toughened nylon using maleic anhydride grafted ethylene-1-octene copolymer as a toughening agent and a preparation method thereof. Background technique [0002] As a widely used engineering plastic, nylon is flexible, wear-resistant and has high mechanical strength. At the same time, the shortcomings of nylon's high water absorption, poor dimensional stability, and low impact strength in dry and low temperature environments hinder its development and application. At present, the commonly used nylon toughening modification method is to achieve the purpose of toughening by blending with toughening agents, such as plastics and rubber. Since the toughening agent is non-polar and has poor compatibility with polar nylon, resulting in a sharp decrease in the strength of the toughened nylon, it is necessary to introduce a compatibilizer. Wherein maleic anhydride g...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L23/00C08L51/00
Inventor 郭强胥成汪晓明
Owner SHANGHAI UNIV
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