CN104419126A - Glass fiber reinforced halogen-free flame retardant PET/ABS alloy and preparation method thereof - Google Patents

Abstract

The invention discloses a glass fiber reinforced halogen-free flame retardant PET/ABS alloy and a preparation method thereof. The glass fiber reinforced halogen-free flame retardant PET/ABS alloy is prepared from the following components in percentage by mass: 15%-50% of PET, 15%-50% of ABS, 15%-25% of glass fiber, 12%-20% of halogen-free flame retardant, 3%-8% of compatilizer, 0.5%-2% of lubricant and 0.1%-1% of antioxidant. Compared with the prior art, the glass fiber reinforced halogen-free flame retardant PET/ABS alloy has the beneficial effects that the manufactured PET/ABS alloy is good in compatibility, good in processing fluidity, high in notch impact strength, and good in elongation at break and heat-resistant property, and has excellent mechanical properties, the strength of the alloy and the temperature of the glowing filament are obviously increased due to the addition of the glass fiber, as being modified by the halogen-free flame retardant, the alloy has the characteristics of safety, no toxicity, low smoke, high efficiency, good flame retardant efficiency and the like, and the UL94V-0 flame retardant level can be achieved; and in short, the alloy can be widely applied to the fields of electronics, automobile spare parts, mechanical parts and the like.

Description

Fiber glass reinforced halogen-free flame retardant PET/ABS Alloy And Preparation Method

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of fiber glass reinforced halogen-free flame retardant PET/ABS Alloy And Preparation Method.

Background technology

Polyethylene terephthalate (PET), due to cheap and have the characteristics such as excellent wear resistance, thermotolerance, chemical proofing, electrical insulating property, compact dimensions stability and mechanical strength are high, is widely used as a kind of engineering plastics in the sixties in 20th century.But PET exists the shortcomings such as crystallization hastens slowly, forming process is difficult, Mo Wengao, shaping cycle are long, shock strength is poor, water-absorbent is large, limit its application.ABS(acrylonitrile-butadiene-styrene copolymer) be maximum, the most widely used plastics of current production rate, price is also more cheap, ABS not only has tough, hard, just balanced mutually mechanical property, and has good dimensional stability, surface gloss, lower temperature resistance, painted processibility and processing fluidity.Thus PET and ABS is carried out blended, the PET/ABS alloy of excellent performance can be obtained, but the compatilizer of PET and ABS bad, and the flame retardant resistance of PET/ABS alloy system and glow wire temperature value not high, high flame retardant requirement can not be applicable to well.

Summary of the invention

The object of the present invention is to provide the fiber glass reinforced halogen-free flame retardant PET/ABS Alloy And Preparation Method that a kind of excellent in mechanical performance, flame retardant properties are good, glow wire temperature is higher.

The technical solution adopted for the present invention to solve the technical problems is: fiber glass reinforced halogen-free flame retardant PET/ABS alloy, and its component by mass percent proportioning is: PET 15% ~ 50%, ABS 15% ~ 50%, glass fibre 15% ~ 25%, halogen-free flame retardants 12% ~ 20%, compatilizer 3% ~ 8%, lubricant 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 1%.

Described PET is polyethylene terephthalate.

Described ABS is acrylonitrile-butadiene-styrene terpolymer.

Described glass fibre is the alkali free glass fibre of surface through silane coupling agent process.

Described halogen-free flame retardants is poly-to the one in sulfobenzide phenyl phosphate ester fire retardant, 3-phenyl-phosphonic acid third carboxylic acid fire retardant, brominated triguaiacyl phosphate fire retardant, alkyl-carboxylic acid phosphonic acids fire retardant.

Described compatilizer is styrene-grafted copolymer-maleic anhydride (SMA).

Described lubricant is the one in pentaerythritol ester, stearyl ester calcium, polysiloxane, ethylene bis stearic amide.

Described oxidation inhibitor is the compound of antioxidant 1076 and irgasfos 168.

The preparation method of above-mentioned fiber glass reinforced halogen-free flame retardant PET/ABS alloy, comprises the following steps:

(1) by PET at 120 DEG C ~ 130 DEG C dry 4 ~ 6 hours, moisture control is below 0.03%, stand-by;

(2) by ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by;

(3) by halogen-free flame retardants at 60 DEG C ~ 80 DEG C dry 30 ~ 45 hours, stand-by;

(4) take dry each component by weight ratio, then add in super mixer and fully mix 5 ~ 15 minutes, make to mix rear discharging;

(5) add in twin screw extruder by the compound of step (4), at 170 DEG C ~ 250 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fiber glass reinforced halogen-free flame retardant PET/ABS alloy of the present invention.

The invention has the beneficial effects as follows, compared with prior art, the consistency of the PET/ABS alloy that the present invention obtains is good, and processing fluidity is good, and notched Izod impact strength is high, elongation at break and resistance toheat good, there is excellent mechanical property; Glass fibre add the intensity and glow wire temperature that significantly improve alloy, halogen-free flameproof modification has the features such as safe, nontoxic, low cigarette, efficient and good flame retardation effect, the fire-retardant rank of UL94V-0 can be reached, the fields such as electronic apparatus, auto parts machinery, mechanical component can be widely used in.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.

Embodiment 1:

A kind of fiber glass reinforced halogen-free flame retardant PET/ABS alloy, its component by mass percent proportioning is: PET 30%, ABS 25%, surface are through the alkali free glass fibre 20% of silane coupling agent process, the poly-compound 0.5% to sulfobenzide phenyl phosphate ester fire retardant 18%, styrene-grafted copolymer-maleic anhydride (SMA) 5%, pentaerythritol ester 1.5%, antioxidant 1076 and irgasfos 168.Wherein, described PET is polyethylene terephthalate; Described ABS is acrylonitrile-butadiene-styrene terpolymer.

Preparation method: (1), by PET at 120 DEG C ~ 130 DEG C dry 4 ~ 6 hours, moisture control is below 0.03%, stand-by; (2) by ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by; (3) will gather sulfobenzide phenyl phosphate ester fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 hours, stand-by; (4) take dry each component by weight ratio, then add in super mixer and fully mix 5 ~ 15 minutes, make to mix rear discharging; (5) add in twin screw extruder by the compound of step (4), at 170 DEG C ~ 250 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fiber glass reinforced halogen-free flame retardant PET/ABS alloy of the present invention.

Embodiment 2:

A kind of fiber glass reinforced halogen-free flame retardant PET/ABS alloy, its component by mass percent proportioning is: PET 30%, ABS 30%, surface are through the compound 1% of the alkali free glass fibre 18% of silane coupling agent process, 3-phenyl-phosphonic acid third carboxylic acid fire retardant 12%, styrene-grafted copolymer-maleic anhydride (SMA) 8%, stearyl ester calcium 1%, antioxidant 1076 and irgasfos 168.Wherein, described PET is polyethylene terephthalate; Described ABS is acrylonitrile-butadiene-styrene terpolymer.

Preparation method: (1), by PET at 120 DEG C ~ 130 DEG C dry 4 ~ 6 hours, moisture control is below 0.03%, stand-by; (2) by ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by; (3) by 3-phenyl-phosphonic acid third carboxylic acid fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 hours, stand-by; (4) take dry each component by weight ratio, then add in super mixer and fully mix 5 ~ 15 minutes, make to mix rear discharging; (5) add in twin screw extruder by the compound of step (4), at 170 DEG C ~ 250 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fiber glass reinforced halogen-free flame retardant PET/ABS alloy of the present invention.

Claims (7)

1. a fiber glass reinforced halogen-free flame retardant PET/ABS alloy, it is characterized in that, its component by mass percent proportioning is: PET 15% ~ 50%, ABS 15% ~ 50%, glass fibre 15% ~ 25%, halogen-free flame retardants 12% ~ 20%, compatilizer 3% ~ 8%, lubricant 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 1%.

2. fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, is characterized in that, described glass fibre is the alkali free glass fibre of surface through silane coupling agent process.

3. fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, it is characterized in that, described halogen-free flame retardants is poly-to the one in sulfobenzide phenyl phosphate ester fire retardant, 3-phenyl-phosphonic acid third carboxylic acid fire retardant, brominated triguaiacyl phosphate fire retardant, alkyl-carboxylic acid phosphonic acids fire retardant.

4. fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, is characterized in that, described compatilizer is styrene-grafted copolymer-maleic anhydride (SMA).

5. fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, is characterized in that, described lubricant is the one in pentaerythritol ester, stearyl ester calcium, polysiloxane, ethylene bis stearic amide.

6. fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, is characterized in that, described oxidation inhibitor is the compound of antioxidant 1076 and irgasfos 168.

7. the preparation method of fiber glass reinforced halogen-free flame retardant PET/ABS alloy according to claim 1, is characterized in that, comprise the following steps:

(1) by PET at 120 DEG C ~ 130 DEG C dry 4 ~ 6 hours, moisture control is below 0.03%, stand-by;

(2) by ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by;

(3) by halogen-free flame retardants at 60 DEG C ~ 80 DEG C dry 30 ~ 45 hours, stand-by;

(4) take dry each component by weight ratio, then add in super mixer and fully mix 5 ~ 15 minutes, make to mix rear discharging;

(5) add in twin screw extruder by the compound of step (4), at 170 DEG C ~ 250 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains fiber glass reinforced halogen-free flame retardant PET/ABS alloy of the present invention.