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Polycarbonate-poly(arylene ether nitrile) alloy and preparation method thereof

A technology of polycarbonate and poly(arylene ether nitrile), which is applied in the field of polycarbonate/poly(arylene ether nitrile) alloy and its preparation, can solve the problem of unpublished reports on polycarbonate/poly(arylene ether nitrile) alloy, halogen-based flame retardant environment Pollution, degradation of polycarbonate properties, etc., to achieve the effects of excellent mechanical properties, simple and easy methods, and improved thermal properties

Inactive Publication Date: 2012-05-30
MIANYANG HONGQI NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these technologies is that the performance of polycarbonate will be reduced after adding flame retardants, and there are environmental pollution problems in halogenated flame retardants.
[0004] All do not have the report of disclosed polycarbonate / polyarylether nitrile alloy in existing domestic and foreign patents

Method used

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  • Polycarbonate-poly(arylene ether nitrile) alloy and preparation method thereof
  • Polycarbonate-poly(arylene ether nitrile) alloy and preparation method thereof
  • Polycarbonate-poly(arylene ether nitrile) alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to weighing of 50 parts by weight of polycarbonate and 50 parts by weight of polyarylether nitrile, the two weighed raw materials are uniformly mixed by a high-speed mixer and then extruded and granulated in a twin-screw extruder to obtain a masterbatch. The melt processing temperature in the granulation step is 290°C. Then the masterbatch and 400 parts by weight of polycarbonate are mixed uniformly by a high mixer and then extruded and granulated in a twin-screw extruder to obtain a halogen-free flame-retardant polycarbonate / polyarylether nitrile alloy. The pellet step melt processing temperature was 260°C. The obtained alloy granules were injection molded into test specimens by an injection molding machine, and various properties of the alloy were tested (see Table 1), and the injection molding temperature was 290°C.

[0023] Table 1

[0024]

Embodiment 2

[0026] Weigh the raw materials according to 50 parts by weight of polycarbonate and 50 parts by weight of polyarylether nitrile, mix the two weighed raw materials uniformly through a high mixer, and then extrude and granulate in a twin-screw extruder to obtain a masterbatch. The melt processing temperature in the extrusion granulation step is 290°C. Then extrude and granulate in a twin-screw extruder to obtain a halogen-free flame-retardant polycarbonate / polyarylether nitrile alloy with the prepared masterbatch and 200 parts by weight of polycarbonate through a high mixer. The melt processing temperature was 260°C. The obtained alloy pellets were injection molded into test specimens by an injection molding machine, and various properties of the alloy were tested (see Table 2), and the injection molding temperature was 290°C.

[0027] Table 2

[0028] characteristics

Embodiment 3

[0030] Weigh the raw materials according to 50 parts by weight of polycarbonate and 50 parts by weight of polyarylether nitrile, mix the two weighed raw materials uniformly through a high mixer, and then extrude and granulate in a twin-screw extruder to obtain a masterbatch. The step melt processing temperature is 290°C. Then extrude and granulate in a twin-screw extruder to obtain a halogen-free flame-retardant polycarbonate / polyarylether nitrile alloy with the prepared masterbatch and 116.7 parts by weight of polycarbonate through a high mixer. The melt processing temperature was 260°C. The obtained alloy pellets were injection molded into test specimens by an injection molding machine, and various properties of the alloy were tested (see Table 3), and the injection molding temperature was 290°C.

[0031] table 3

[0032] characteristics

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Abstract

The invention belongs to the field of high molecular materials, in particular to a polycarbonate-poly(arylene ether nitrile) alloy and a preparation method thereof. The first technical problem solved by the invention is to provide a polycarbonate-poly(arylene ether nitrile) alloy which comprises the following components in parts by weight: 45-450 parts of polycarbonate and 45-55 parts of poly(arylene ether nitrile). The polycarbonate-poly(arylene ether nitrile) alloy prepared by the invention has excellent mechanical property, temperature resistance and flame retardant property; the tensile strength thereof is larger than 58 MPa, the flexural strength is larger than 85 MPa, the flexural modulus is larger than 2250 MPa, the heat deflection temperature is larger than 127 DEG C, and the limited oxygen index is larger than 32.5; and the polycarbonate-poly(arylene ether nitrile) alloy can be widely used in the fields of electrical electronics, machines, automobiles and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a polycarbonate / polyarylether nitrile alloy and a preparation method thereof. Background technique [0002] Polycarbonate resin is a resin with excellent heat resistance, impact resistance, and dimensional stability, and is widely used in the fields of electronic and electrical parts, equipment parts, and automotive parts. In recent years, due to the continuous advancement of light, thin and short products, the materials used are required to maintain high rigidity of strength, good fluidity during molding and processing, and high flame retardancy to maintain product safety even when designed as thin-walled products. . However, polycarbonate itself is combustible and will drip hot melt material, causing nearby materials to also catch fire. In order to solve the problem of polycarbonate flame retardancy, most of the existing technologies use polytetrafluoroethylene added with var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L71/10B29B9/06
Inventor 曾学良曾尔华汪学军钱丰
Owner MIANYANG HONGQI NEW MATERIAL SCI & TECH