Polyamide composition with good appearance

A polyamide composition, thermoplastic polyamide technology, applied in the field of modified polyamide composition, can solve the problems of lack of molecular weight, molecular structure, sag melt, cracking and the like

Inactive Publication Date: 2018-05-18
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary nylon composite materials cannot meet the needs of increasingly diversified processing methods due to lack of suitable molecular weight, molecular structure and suitable additives.
[0003] In the prior art, there is provided a special composite material for blow molding of reinforced nylon intake pipe, which uses ABS, HDPE, PBT, PET or any combination thereof as a modifier to improve the impact resistance of nylon, and at the same time to change The melt viscosity-temperature characteristics of nylon, and use POE, TPE, EPDM or their maleic anhydride grafts to mix in any proportion to improve compatibility, but does not involve any modification method to improve the melt strength of nylon materials
However, for ...

Method used

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  • Polyamide composition with good appearance
  • Polyamide composition with good appearance
  • Polyamide composition with good appearance

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Experimental program
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Effect test

specific Embodiment E1-E14

[0059] The polyamide compositions with good appearance in specific examples E1-E14 were prepared from the components in columns E1-E14 in Tables 1-2, respectively. The preparation method is as follows: before extrusion, the thermoplastic polyamide resin pellets are dried until the moisture content is lower than 1500ppm, and then the ingredients (except glass fiber) are blended in proportion and put into the main feed of the twin-screw extruder. The feeder is extruded and granulated by twin-screw. The processing conditions are: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 260°C, the temperature of the fourth zone is 260°C, the temperature of the fifth zone is 260°C, and the temperature of the sixth zone is 270°C , The temperature in the seventh zone is 270°C, the temperature in the eighth zone is 275°C, and the temperature in the ninth zone is 280°C; the speed of the host is 350 rpm. Glass fiber is...

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Abstract

The invention discloses a polyamide composition with good appearance, prepared from, by weight, 49-89% of thermoplastic polyamide resin, 0.01-10% of a maleic anhydride copolymer, 0-50% of a filler, 0-20% of an anti-impact modifier, and 0.01-20% of a polyhydroxy compound, wherein the maleic anhydride copolymer is one of alternating copolymers or block copolymers made by means of mass polymerization. The maleic anhydride copolymer of special structure is added into a polyamide system, so that melt strength and mechanical properties of the polyamide composition are improved; the polyhydroxy compound is introduced, so that the appearance of the polyamide composition is greatly improved, and the mobility worsening due to the introduction of maleic anhydride copolymers is particularly improved;the maleic anhydride copolymer is particularly suitable for processing or forming procedures having high melt strength requirement, especially extrusion molding, blow molding, foaming and the like.

Description

technical field [0001] The invention relates to a modified polyamide composition, in particular to a polyamide composition with good appearance, and belongs to the technical field of polymer composite materials and processing thereof. Background technique [0002] Due to their excellent mechanical properties, chemical resistance, processability, and heat-oxidative aging resistance, polyamide compositions are often used in the electronics and motor vehicle industries that have strict requirements on the working environment. Among them, motor vehicle engines Peripheral applications are especially common. In order to achieve light weight to achieve the purpose of energy saving, emission reduction and cost reduction, more and more automotive metal parts are replaced by nylon. However, as the structure of parts becomes more and more special, nylon is also required to meet more application processing methods , such as blow molding, extrusion, foaming and other application process...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L35/00C08L53/00C08K7/14C08K5/20C08K5/06
CPCC08L77/06C08L2201/08C08L2205/035C08L35/00C08L53/00C08K7/14C08K5/20C08K5/06
Inventor 林洁龙王大中杨波罗忠富丁正亚杨军
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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