Glass fiber reinforced polyamide composition and its preparation method and application

A polyamide composition and polyamide technology, which are applied in the field of glass fiber reinforced polyamide composition and its preparation, can solve the problems of poor dimensional stability, "floating fiber weight, low water absorption rate, etc., and achieve good dimensional stability and low water absorption. The effect of floating fiber and low melting point

Active Publication Date: 2018-09-21
QINGDAO HAIER NEW MATERIAL R&D CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of poor dimensional stability of traditional glass fiber reinforced polyamide materials and heavy "floating fibers" on the surface of the product existing in the prior art, and to provide a low water absorption, good dimensional stability, not easy to deform, Glass fiber reinforced polyamide composition with low floating fiber and its preparation method and application

Method used

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  • Glass fiber reinforced polyamide composition and its preparation method and application

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preparation example Construction

[0026] The preparation method of the glass fiber reinforced polyamide composition of the present invention is as follows: the first step is to mix polyamide 6 or polyamide 66 and low-melting polyamide uniformly in proportion, and then melt, extrude and granulate through extrusion equipment to obtain Low-melting polyamide composition; the second step, the low-melting polyamide composition prepared in the first step is uniformly mixed in proportion with aliphatic polyketone, alkali-free chopped glass fiber, POE grafted maleic anhydride, and extruded Equipment for melt extrusion granulation. In this case, the components polyamide 6 or polyamide 66, low melting point polyamide, aliphatic polyketone, E-chopped glass fiber, and POE grafted maleic anhydride should be varied within the range specified above, Such that all weight percentages always add up to 100%.

[0027] The above-mentioned technical scheme, further, in addition to polyamide 6 or polyamide 66, low-melting polyamide,...

Embodiment

[0047] Weigh polyamide PA6, polyamide with low melting point and additives according to the proportioning ratio of Examples 1-3 in Table 1, mix them in a high-speed mixer for 3 minutes, and add the mixed materials into the twin-screw extruder from the hopper, Melt extrusion and granulation to obtain a low-melting point polyamide composition. During extrusion, the temperature of each section of the twin-screw extruder is 220°C in the first zone, 230°C in the second zone, 240°C in the third zone, 240°C in the fourth zone, 240°C in the fifth zone, 240°C in the sixth zone, 240°C in the seventh zone, and 240°C in the head. °C, screw speed 300rpm.

[0048] The prepared low-melting polyamide composition, dendritic polyamide, aliphatic polyketone, chopped non-alkali glass fiber, POE grafted maleic anhydride, and auxiliary agent were mixed in a high-speed mixer for 2 minutes, and the mixed material was added by adding The hopper is fed into a twin-screw extruder, melted and extruded t...

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Abstract

The invention relates to a composition of a macromolecular compound, in particular to a glass fiber enhanced polyamide composition and a preparation method and application thereof. The glass fiber enhanced polyamide composition is prepared from polyamide 6 or polyamide 66, low-melting-point polyamide, aliphatic polyketone, alkali-free chopped glass fibers and POE-grafted maleic anhydride. By the adoption of unique formula design and a two-step extrusion process, the glass fiber enhanced polyamide composition with low melting point, high wear resistance, low floating fiber content and high size stability is prepared, and can be widely applied to the fields of automobiles, engineering structural members, electronic and electrical products and the like which have high appearance requirement and relatively high requirements on rigidity and toughness balance, wear resistance and size stability.

Description

technical field [0001] The invention relates to a polymer compound composition, especially a glass fiber reinforced polyamide composition and its preparation method and application. Background technique [0002] Glass fiber reinforced polyamide materials have excellent mechanical properties, heat resistance, and fatigue resistance, and are widely used in electronic appliances, automobiles, construction machinery and other fields. However, due to poor compatibility between glass fibers and polyamide materials, Due to the large difference in fluidity between the two, it is easy to form "floating fibers" on the surface of the injection molded product, which seriously affects the appearance of the product, and the addition of glass fiber reduces the toughness and wear resistance of the material, and is prone to warping and deformation, which limits the material's flexibility. application. [0003] Polyamide composite material for vehicle intake manifold and its preparation meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/00C08K7/14C08J5/04B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08J5/043C08J2377/02C08J2377/06C08J2477/00C08K2201/003C08K2201/004C08L77/02C08L77/06C08L2205/02C08L2205/035C08L77/00C08K7/14
Inventor 刘机关吉家绚周洋李彬张秀文谭伟宏崔青涛李伟
Owner QINGDAO HAIER NEW MATERIAL R&D CO LTD
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