CN102766320B

CN102766320B - High temperature-resistent low-cost polyethylene terephthalate (PET)/polybutylene terephthalate (PBT) alloy material and preparation method thereof

Info

Publication number: CN102766320B
Application number: CN201210263576.8A
Authority: CN
Inventors: 赵文千; 赵俊雷
Original assignee: JIANGYIN LONGSHAN SYNTHETIC MATERIAL CO Ltd
Current assignee: JIANGYIN LONGSHAN SYNTHETIC MATERIAL CO Ltd
Priority date: 2012-07-28
Filing date: 2012-07-28
Publication date: 2014-05-14
Anticipated expiration: 2032-07-28
Also published as: CN102766320A

Abstract

The invention relates to a high temperature-resistent low cost polyethylene terephthalate (PET)/polybutylene terephthalate (PBT) alloy material. The raw materials comprise 40-50% of PET, 1-7% of PBT, 8-15% of brominated polystyrene, 1-5% of antimony trioxide, 2-5% of toughening agent PTW, antioxidant 1010, antioxidant 168, 0.5-2% of PET nucleating agent P250, 0.3-1% of crystallization accelerating agent NA-95, 0.3-1% of crystallization accelerating agent P1000 and 25-35% of glass fiber. A preparation method provided by the invention is as follows: the raw materials except the glass fiber are blended and then added into a feeding hopper of a screw extruder; while the glass fiber is added into the screw extruder, and the raw materials are melt extruded and granulated to obtain the final product. The prepared product of the invention has good flexibility and fast crystallization rate, and also has the characteristics of high-temperature resistance and low cost.

Description

High temperature resistant low cost PET/PBT alloy material and preparation method thereof

Technical field

The present invention relates to a kind of high temperature resistant low cost PET/PBT alloy material and preparation method thereof, belong to technical field of polymer materials.

Background technology

PET(polyethylene terephthalate) there is higher melt temperature and second-order transition temperature, it has antifatigue, crocking resistance is good, ageing-resistant performance excellence, the exsertile feature of electrical insulating property, but there is again the shortcoming that crystallization velocity is slow, mould molding temperature is high, shaping cycle is long in it.

And polybutylene terephthalate, English name polybutylene terephthalate(is called for short PBT), it has advantages of that molecule segment is flexible, mechanical property good, heat-drawn wire is low, crystallization velocity is fast, but its price is compared with PET(polyethylene terephthalate) height, and its fusing point is lower than PET, accordingly its resistance toheat compared with PET a little less than.

Publication number is that the Chinese patent application of CN1020408081A discloses a kind of " the low warp glass fiber REINFORCED PET/PBT of high gloss Alloy And Preparation Method ", it is that PBT and PET are made to alloy material, carry out the comprehensively advantage of the two, but in order to guarantee its good snappiness and crystallization velocity faster, the wherein usage quantity of PBT higher (content is at 15-60%), and the price of PBT will be far away higher than the price of PET, from making material cost high, in addition, its resistance toheat also needs further to be improved.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, a kind of high temperature resistant low cost PET/PBT alloy material is provided, it had both had good snappiness and crystallization velocity faster, had the feature high temperature resistant, cost is low simultaneously.

The object of the present invention is achieved like this:

A kind of high temperature resistant low cost PET/PBT alloy material, its raw materials quality per-cent is as follows:

PET 40-50%

PBT 1-7%

Brominated Polystyrene 8-15%

Antimonous oxide 1-5%

Toughner PTW 2-5%

Antioxidant 1010 0.05-0.3%

Irgasfos 168 0.1-0.5%

PET nucleator P250 0.5-2%

Crystallization promoter NA-95 0.3-1%

Crystallization promoter P1000 0.3-1%

Glass fibre 25-35%.

Its raw materials quality per-cent preferred version of the present invention is as follows:

PET 45%

PBT 6%

Brominated Polystyrene 10%

Antimonous oxide 3%

Toughner PTW 4%

Antioxidant 1010 0.1%

Irgasfos 168 0.2%

PET nucleator P250 1%

Crystallization promoter NA-95 0.5%

Crystallization promoter P1000 0.2%

Glass fibre 30%.

Wherein, crystallization promoter NA-95, crystallization promoter P1000 all buy from Shanghai Liang Dian chemical company limited; Toughner PTW is that du pont company produces.

A kind of preparation method of high temperature resistant low cost PET/PBT alloy material, described method is to prepare raw material by each proportioning raw materials, then first by PET, PBT, brominated Polystyrene, antimonous oxide, toughner PTW, antioxidant 1010, irgasfos 168, PET nucleator P250, crystallization promoter NA-95 and crystallization promoter P100 blend, then add screw extrusion press feeding hopper, add entrance at the glass of screw extrusion press and add glass fibre simultaneously, melt extrude granulation through screw extrusion press.

Compared with prior art, the invention has the beneficial effects as follows:

In the present invention, at PBT resin, the content in whole formula system is only 1-7%, and the increased content of corresponding PET, greatly reduces production cost, strengthened resistance toheat, and intensity is high simultaneously.In whole formula system, improve PBT content and reduce the defect of the toughness variation of bringing by toughner PTW; And improve crystallization velocity by the acting in conjunction of PET nucleator P250, crystallization promoter NA-95 and crystallization promoter P1000, improve production efficiency; Adopting in addition brominated Polystyrene halogen flame is main flame retardant, and itself and the acting in conjunction of auxiliary flame retardant antimonous oxide improve the flame retardant effect of whole system; Antioxidant 1010 and irgasfos 168 mix use, strengthen anti-oxidant resistance toheat; Add glass fibre, play enhancement.

The present invention is high temperature resistant product prepared by low cost PET/PBT alloy material, had both had good snappiness and crystallization velocity faster, had the feature high temperature resistant, cost is low simultaneously.

Embodiment

Embodiment 1:

A kind of high temperature resistant low cost PET/PBT alloy material, % is composed as follows for its raw materials quality:

PET 45%

PBT 6%

Brominated Polystyrene 10%

Antimonous oxide 3%

Toughner PTW 4%

Antioxidant 1010 0.1%

Irgasfos 168 0.2%

PET nucleator P250 1%

Crystallization promoter NA-95 0.5%

Crystallization promoter P1000 0.2%

Glass fibre 30%.

Preparation method is:

Prepare raw material by each proportioning raw materials, then first by PET, PBT, brominated Polystyrene, antimonous oxide, toughner PTW, antioxidant 1010, irgasfos 168, PET nucleator P250, crystallization promoter NA-95 and crystallization promoter P100 blend (raw material being about to except glass fibre mixes), then add screw extrusion press feeding hopper, add entrance at the glass of screw extrusion press and add glass fibre simultaneously, melt extrude granulation through screw extrusion press.

The standard test specimen that adopts this particle to make, 220 ℃ of heatproofs are tested to meet 48 hours.

Crystallization promoter NA-95, crystallization promoter P1000 all buy from Shanghai Liang Dian chemical company limited; Toughner PTW is that du pont company produces.

Embodiment 2:

The present embodiment is only that from the difference of embodiment 1 mass percent of each raw material is different, wherein:

PET 47%

PBT 2%

Brominated Polystyrene 8%

Antimonous oxide 5%

Toughner PTW 2%

Antioxidant 1010 0.2%

Irgasfos 168 0.4%

PET nucleator P250 1.6%

Crystallization promoter NA-95 0.5%

Crystallization promoter P1000 0.3%

Glass fibre 33%.

Embodiment 3:

PET 43%

PBT 6.7%

Brominated Polystyrene 14%

Antimonous oxide 2%

Toughner PTW 3%

Antioxidant 1010 0.2%

Irgasfos 168 0.3%

PET nucleator P250 0.8%

Crystallization promoter NA-95 0.8%

Crystallization promoter P1000 0.2%

Glass fibre 29%.

Embodiment 4:

PET 48%

PBT 3%

Brominated Polystyrene 12%

Antimonous oxide 4%

Toughner PTW 2%

Antioxidant 1010 0.3%

Irgasfos 168 0.4%

PET nucleator P250 0.8%

Crystallization promoter NA-95 1%

Crystallization promoter P1000 0.5%

Glass fibre 28%.

Embodiment 5:

PET 50%

PBT 1%

Brominated Polystyrene 11%

Antimonous oxide 4%

Toughner PTW 5%

Antioxidant 1010 0.1%

Irgasfos 168 0.2%

PET nucleator P250 1%

Crystallization promoter NA-95 0.5%

Crystallization promoter P1000 0.2%

Glass fibre 27%.

Claims

1. a high temperature resistant low cost PET/PBT alloy material, is characterized in that: its raw materials quality per-cent is as follows:

PET 40-50%

PBT 1-7%

Brominated Polystyrene 8-15%

Antimonous oxide 1-5%

Toughner PTW 2-5%

Antioxidant 1010 0.05-0.3%

Irgasfos 168 0.1-0.5%

PET nucleator P250 0.5-2%

Crystallization promoter NA-95 0.3-1%

Crystallization promoter P1000 0.3-1%

Glass fibre 25-35%.

2. a high temperature resistant low cost PET/PBT alloy material, is characterized in that: its raw materials quality per-cent is as follows:

PET 45%

PBT 6%

Brominated Polystyrene 10%

Antimonous oxide 3%

Toughner PTW 4%

Antioxidant 1010 0.1%

Irgasfos 168 0.2%

PET nucleator P250 1%

Crystallization promoter NA-95 0.5%

Crystallization promoter P1000 0.2%

Glass fibre 30%.

3. the preparation method of a high temperature resistant low cost PET/PBT alloy material, it is characterized in that: described method is to prepare raw material by the each proportioning raw materials of claim 1 or 2, then first by PET, PBT, brominated Polystyrene, antimonous oxide, toughner PTW, antioxidant 1010, irgasfos 168, PET nucleator P250, crystallization promoter NA-95 and crystallization promoter P100 blend, then add screw extrusion press feeding hopper, add entrance at the glass of screw extrusion press and add glass fibre simultaneously, melt extrude granulation through screw extrusion press.