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Polyamide composition, and preparation method and application thereof

A technology of polyamide composition and polyamide, which is applied in the field of low-corrosion polyamide composition and low precipitation, and can solve problems such as easy precipitation, corrosion of extruder and other equipment, and affecting the performance of polyamide composition

Active Publication Date: 2015-04-22
TIANJIN KINGFA NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Halogen-free and red-phosphorus-free flame-retardant reinforced polyamides are flame-retardant with nitrogen and / or phosphorus-containing compounds, but the added components in the polyamide composition are easy to precipitate, which affects the performance of the polyamide composition
[0004] When preparing polyamide compositions, adding flame retardants such as hypophosphite compounds under high temperature conditions will cause partial decomposition and corrosion of extruders and other equipment

Method used

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  • Polyamide composition, and preparation method and application thereof
  • Polyamide composition, and preparation method and application thereof
  • Polyamide composition, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Add nylon 6, aluminum tris(diethylphosphinate), melamine polyphosphate, epoxy resin and zeolite into the twin-screw extruder through the main feed port of the twin-screw extruder according to the weight parts in Table 1 The polyamide composition is obtained after extrusion granulation, cooling, and drying; wherein, the process conditions of the extruder are: the temperature of the first and second stages of the twin-screw extruder is 230~250°C, and the temperature of the third and fourth stages is 250~270°C, the temperature of the fifth and sixth stages is 260~280°C, the temperature of the seventh and eighth stages is 240~270°C, the temperature of the head is 230~270°C, and the screw speed is 150~350 rpm.

[0065] The properties of the prepared polyamide composition were tested and listed in Table 1.

Embodiment 2

[0067] Nylon 66, tris(diethylphosphinate)aluminum, zinc borate, ethylene-maleic anhydride copolymer and zinc oxide were added to the double-screw extruder through the main feed port of the twin-screw extruder according to the weight parts in Table 1. The polyamide composition is obtained after extruding, granulating, cooling, and drying in a screw extruder; wherein, the process conditions of the extruder are: the temperature of the first and second stages of the twin-screw extruder is 230~250°C, and the temperature of the third stage , The temperature of the fourth stage is 250~270°C, the temperature of the fifth and sixth stage is 260~280°C, the temperature of the seventh and eighth stage is 240~270°C, the temperature of the head is 230~270°C, and the screw speed is 150~350 rpm .

[0068] The properties of the prepared polyamide composition were tested and listed in Table 1.

Embodiment 3

[0070] Nylon 6 / 6T, bis(diethylphosphinate) zinc, melamine cyanurate, styrene-maleic anhydride copolymer and sodium hydroxide are passed through a twin-screw extruder according to the weight parts in Table 1 The main feed port of the twin-screw extruder is added into a twin-screw extruder to extrude, granulate, cool, and dry to obtain a polyamide composition; wherein, the process conditions of the extruder are: the temperature of the first and second sections of the twin-screw extruder is 230~250°C, the temperature of the third and fourth stages is 250~270°C, the temperature of the fifth and sixth stages is 260~280°C, the temperature of the seventh and eighth stages is 240~270°C, the temperature of the head is 230~270°C, the screw speed 150~350 rpm.

[0071] The properties of the prepared polyamide composition were tested and listed in Table 1.

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Abstract

The invention discloses a polyamide composition, a preparation method and application thereof. The polyamide composition comprises polyamide, a flame retardant, a flame retardant synergistic agent, a cross-linking agent and an acid absorption agent; and the cross-linking agent is epoxy resin, a vinyl-maleic anhydride copolymer, a styrene-maleic anhydride copolymer, a phenolic resin and / or pentaerythritol. The invention also discloses the preparation method and application of the composition. The preparation method comprises the following steps: adding the components of the composition into a double screw extruder for extrusion and granulation; and cooling and drying to obtain the polyamide composition. The polyamide compositions provided by the invention has characteristics of good flame retardation, little flame retardant precipitation, and little corrosion on processing equipment, etc.

Description

technical field [0001] The invention relates to a composition, in particular to a polyamide composition with low precipitation and low corrosion, a preparation method and application thereof. Background technique [0002] Flame-retardant reinforced nylon is being widely used in electronics, electrical, automobile, electric tools and home appliances industries due to its excellent flame-retardant properties, electrical properties and mechanical properties. The most widely used flame retardant for nylon materials is the bromine-antimony system flame retardant. This type of flame retardant has the characteristics of high flame retardant efficiency, low addition amount, and small impact on material properties. Due to the growing concern about agent toxicity and safety, flame-retardant nylon halogen-free red phosphating is becoming the development trend of the industry. [0003] The halogen-free and red-phosphorus-free flame-retardant reinforced polyamide uses nitrogen and / or ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L63/00C08L23/08C08L35/06C08L61/06C08K13/02C08K5/053C08K3/34C08K3/32C08K5/5313B29C47/92B29C48/92
CPCB29C47/827B29C47/92B29C48/40B29C48/875
Inventor 谭麟梁惠强金雪峰孙东海陈国雄李东
Owner TIANJIN KINGFA NEW MATERIAL