Flame-retardant PPO/PA alloy and preparation thereof

An alloy and composite flame retardant technology, which is applied in the field of flame retardant PPO/PA alloy and its preparation, can solve the problems such as the development trend that does not conform to environmental protection, the influence of material properties is large, and the flame retardant effect is different, and achieves excellent mechanical strength. and flame retardant properties, simple preparation process, and improved processability

Inactive Publication Date: 2008-11-12
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional flame retardant methods use a single flame retardant or a halogen flame retardant, but there are two components in the PPO / PA alloy, and a single flame retardant has a different flame retardant effect on the two components, so the flame retardant Poor effect, great impact on material properties
The use of halogenated flame retardants is not in line with the development trend of environmental protection

Method used

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Examples

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preparation example Construction

[0032] The invention provides a flame-retardant PPO / PA alloy and a preparation method thereof. Its composition by weight is: PPO 30-50%, PA 10-60%, toughening agent 3-15%, composite flame retardant 5-15%, compatibilizer 3-10%, other additives 0.5- 2%.

[0033] Among them, polyphenylene ether (PPO) resin has an intrinsic viscosity of 0.3-0.5dl / g, nylon is PA6 or PA66, and the toughening agent is rubber or elastomer containing styrene monomer, such as styrene-butadiene Block copolymer (SBS), hydrogenated SBS (SEBS), high-impact polystyrene (HIPS), etc., the flame retardant is a phosphorus-nitrogen composite flame-retardant system, such as phosphorus-based flame retardant red phosphorus, resorcinol -Diphenyl diphosphate (RDP), bisphenol A-diphenyl diphosphate (BDP), etc. are used in combination with nitrogen-based flame retardants such as melamine and melamine salt (MCA), and the compatibilizer is PPO-g- MAH, self-made, graft rate 0.8-1.5%, other additives include processing ai...

Embodiment 1

[0038] Weigh PPO 30%, PA6 46.3%, SEBS 5%, RDP 10%, MCA 5%, compatibilizer 3%, processing aid 0.3%, antioxidant 1010 0.2%, 168 0.2%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 270°C; zone 2: 285°C; zone 3: 285°C; zone 4: 270°C; head: 285°C; residence time 2-3min. The pressure is 15MPa.

Embodiment 2

[0040] Weigh PPO 40%, PA6 36.3%, SEBS 5%, RDP 10%, MCA 5%, compatibilizer 3%, processing aid 0.3%, antioxidant 1010 0.2%, 168 0.2%. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 270°C; zone 2: 285°C; zone 3: 285°C; zone 4: 270°C; head: 285°C; residence time 2-3min. The pressure is 15MPa.

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Abstract

The invention discloses a flame-retardant PPO/PA alloy and a method for preparing the same. The compositions by weight percentage of the flame-retardant PPO/PA alloy are: 30 to 50 percent of PPO, 10 to 60 percent of PA, 3 to 15 percent of toughener, 5 to 15 percent of composite flame retardant, 3 to 10 percent of compatilizer, and 0.5 to 2 percent of other addition agents. The method for preparing the composite flame-retardant PPO/PA alloy comprises the following steps of: firstly, mixing the materials according to the proportions; then, putting the mixed materials into a plastic double-screw extruder and controlling a temperature between 260 and 320 DEG C for granulation to acquire the composite flame-retardant PPO/PA alloy. The method acquires the flame-retardant PPO/PA alloy with excellent comprehensive property by adopting a composite flame-retardant system. The composite flame-retardant PPO/PA alloy has a simple preparation process.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant PPO / PA alloy and a preparation method thereof. [Background technique] [0002] Polyphenylene oxide (PPO) and polyamide (PA) are one of the five major engineering plastics. PPO is an amorphous material with high lipophilicity, excellent heat resistance, electrical insulation and creep resistance at high temperature, but its impact toughness is poor, difficult to process and not resistant to non-polar solvents; PA is a crystal with high hydrophilicity It is a durable material with excellent solvent resistance, easy processing and high mechanical strength, but it has poor dimensional stability and low heat resistance. PPO / PA alloy combines the advantages of PPO and PA, makes up for their shortcomings, and has excellent comprehensive performance. [0003] Most of the traditional flame retardant methods use a single flame retardant or a halogen flame re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/12C08L77/02C08K5/521B29C47/40B29C47/92C08K5/3492C08L51/00B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/92561B29C2948/92895
Inventor 徐东贺永李红敏
Owner ANHUI KEJU NEW MATERIALS
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