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A polyphenylene ether and alloy technology, applied in the field of alloy materials and its preparation, achieves the effects of wide practicability, good high and low temperature mechanical properties, and easy insulation
Inactive Publication Date: 2013-05-29
SHANGHAI SUNNY
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Problems solved by technology
Although there are many modified PPO products, there are still other deficiencies, such as: processing performance, rigidity, good toughness, weather resistance, etc., which still cannot meet the needs of practice
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Embodiment 1～9
[0030] In the following Examples 1-9:
[0031] The specific viscosity of polyphenylene ether (PPO) resin in chloroform at 25°C is 0.2-0.6 dl / g.
[0032] Hydrogenated block copolymers are A-B-A triblock copolymers or A-B diblock copolymers of styrene and butadiene, or a blend of the two; Kraton G1650, Kraton G1651, Kraton G1657, Kraton G1660, Kraton G1643 et al.
[0033] The polyolefin is low density polyethylene.
Embodiment 1
[0035] The components of the halogen-free flame-retardant polyphenylene ether alloy of this embodiment and the parts by weight of each component are as follows:
[0036] PPO LXR035: 50
[0037] High Impact Polystyrene: 34
[0038] Melamine polyphosphate: 3
[0039] Triphenyl Phosphate: 8
[0040] Kraton G1660: 3
[0041] LDPE: 2
[0042] Antioxidant: 0.3
[0043] Anti-ultraviolet agent: 0.3.
[0044] The steps of the preparation method of the halogen-free flame-retardant polyphenylene ether alloy are as follows:
[0045] Step 1: Take each component according to parts by weight, put each component into a high mixer and mix for 2 to 5 minutes, and then add it from the first section of the twin-screw extruder;
[0046] In step 2, the above-mentioned materials are extruded and granulated by a twin-screw extruder with a rotation speed of 180-600 rpm and a temperature of 235-255° C. to obtain a halogen-free flame-retardant polyphenylene ether alloy.
Embodiment 2
[0048] The components of the halogen-free flame-retardant polyphenylene ether alloy of this embodiment and the parts by weight of each component are as follows:
[0049] PPO LXR045: 58
[0050] High Impact Polystyrene: 24
[0051] Melamine polyphosphate: 2
[0052] m-Phenylene tetraphenyl bisphosphate: 10
[0053] Kraton G1650: 4.5
[0054] LDPE: 1.5
[0055] Antioxidant: 0.3
[0056] Anti-ultraviolet agent: 0.3.
[0057] The steps of the preparation method of the halogen-free flame-retardant polyphenylene ether alloy are as follows:
[0058] Step 1, taking each component by weight parts;
[0059] Step 2, mixing the above materials except m-phenylene tetraphenyl bisphosphate in a high-speed mixer for 2 to 5 minutes, and adding them from the main feeding pump of the twin-screw extruder;
[0060] Step 3, m-phenylene bisphosphate is added from the fourth section of the twin-screw extruder through a feed pump;
[0061] Step 4, the above-mentioned materials are extruded an...
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Abstract
The invention relates to a halogen free inflaming retardant polyphenylene oxide alloy and preparation method thereof, which belong to the technical field of high-molecular material. The halogen free inflaming retardant polyphenylene oxide alloy comprises the following components, by weight: 50-80 parts of polyphenylene oxide, 10-40 parts of high impact polystyrene, 5-25 parts of compound halogen free fire retardant, 2-20 parts of hydrogenation segmented copolymer, 1-5 parts of polyolefin, 0.2-0.6 part of anti-oxidant and 0.2-0.6 part of ultraviolet resistant agent. The preparation method of the alloy comprises the following steps: weighing the components according to proportion; mixing; extruding the materials by a double screw extruder and granulating, with a rotating speed of the doublescrew extruder being 180-600 round / min and a temperature of 235-255 DEG C. The polyphenylene oxide alloy of the invention has advantages of good high and low temperature mechanical properties, flame resistance, weather ability, insulating properties and easiness for moulding, etc., and satisfies regulatory requirements of RoHS, IEC non-halogenation and Reach of European Union and has wide practicality.
Description
technical field [0001] The invention relates to an alloy material in the field of material technology and a preparation method thereof, in particular to a halogen-free flame-retardant polyphenylene ether alloy and a preparation method thereof. Background technique [0002] Polyphenylene oxide (PPO) has good mechanical properties, chemical stability, dielectric properties, heat resistance and flame retardancy, and is a high-performance thermoplastic engineering plastic. However, the molecular chain of PPO is relatively rigid and is very sensitive to notch impact. At the same time, due to its high melt viscosity, it cannot be injection molded, which greatly limits its application. High-impact polystyrene (HIPS) has good compatibility with PPO, which can effectively improve the fluidity and notch sensitivity of PPO, and can form PPO alloys in a wide range. The improvement of the notch sensitivity of PPO by simply adding high-impact polystyrene is limited, and other impact modi...
Claims
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Application Information
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