CN104629338A - Permanently antistatic PC/ABS modified alloy, and preparation method thereof - Google Patents

Abstract

The invention discloses a permanently antistatic PC/ABS modified alloy, and a preparation method thereof. The permanently antistatic PC/ABS modified alloy comprises following ingredients, by mass, 30 to 60% of PC, 20 to 30% of ABS, 8 to 12% of alkali-free glass fiber, 1 to 3% of a high-molecular antistatic agent, 5 to 10% of a fire retardant, 0.5 to 2% of an anti-hydrolysis agent, 1 to 3% of a compatibilizer, 0.1 to 0.5% of an anti-oxidant, and 0.5 to 1.5% of a lubricant. Beneficial effects of the permanently antistatic PC/ABS modified alloy are that: the permanently antistatic PC/ABS modified alloy possesses advantages of PC and ABS, and excellent antistatic performance; glass fiber is used so as to improve original tensile strength, bending strength, bending elasticity modulus, and surface gloss of the permanently antistatic PC/ABS modified alloy; antistatic effect is excellent and durable; and flame resistance is excellent, and is capable of reaching UL94V-0 standards.

Description

PC/ABS modified alloy of permanent anti-static and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of PC/ABS modified alloy and preparation method thereof of permanent anti-static.

Background technology

PC/ABS alloy (polycarbonate/acrylonitrile-butadiene-phenylethene copolymer) combines the premium properties of PC and ABS, cost and the melt viscosity of PC can be reduced on the one hand, improve mobility, improve its processing characteristics, the stress cracking resistance of PC can be improved on the other hand, reduce the susceptibility of impacting thickness and breach, be the ideal alloy plastic of a kind of performance, be applied widely in automobile, machinery, household electrical appliances, computer, Communication Equipment, office equipment etc.Along with the expansion of PC/ABS Alloyapplication scope, PC/ABS alloy is proposed to the requirement of functionalization, high performance.Because PC/ABS alloy material is in production, storage and use, very easily produce accumulation of static electricity, cause dust suction, electric shock, cause the serious accidents such as blast after even producing spark, therefore, it is necessary for carrying out antistatic modified to PC/ABS alloy.Existing antistatic PC/ABS alloy material is adopt to add low-molecular-weight static inhibitor mostly, and rely on molecule thing to separate out and form hydrophilic layer to material surface and produce antistatic effect, its shortcoming is that antistatic time is short, not water-fastness.

Summary of the invention

In view of the deficiencies in the prior art, the object of the present invention is to provide and a kind of there is PC/ABS modified alloy of excellent mechanical property and the good permanent anti-static of flame retardant properties and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: the PC/ABS modified alloy of permanent anti-static, and its component by mass percent proportioning is: PC 30% ~ 60%, ABS 20% ~ 30%, alkali free glass fibre 8% ~ 12%, Polymer-metallic Catalyst 1% ~ 3%, fire retardant 5% ~ 10%, hydrolysis agent 0.5% ~ 2%, expanding material 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.5% ~ 1.5%.

Described PC is bisphenol A polycarbonate, and its second-order transition temperature is 145 DEG C ~ 150 DEG C.

Described ABS is acrylonitrile-butadiene-styrene copolymer.

Described Polymer-metallic Catalyst is the one in polyethylene oxide (PEO), polyether ester amides (PEEA), polyether ester imide (PEAI).

Described fire retardant is brominated polycarbonate oligomer (bromo PC) based flame retardant BC-52 or BC-58.

Described hydrolysis agent is carbodiimide.

Described expanding material is methacrylate butadi ene styrene copolymer (MBS).

Described oxidation inhibitor is the compound of hindered phenol antioxygen 1010 or 1076 and phosphite antioxidant 168 1:2 in mass ratio.

Described lubricant is pentaerythritol stearate (PETS) or modification ethylene bis-fatty acid amides (TAF).

The preparation method of the PC/ABS modified alloy of above-mentioned permanent anti-static, comprises the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by;

(2), add in high-speed mixer by taking dry ABS by weight ratio, then add take by weight ratio Polymer-metallic Catalyst, fire retardant, hydrolysis agent, oxidation inhibitor, lubricant, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying;

(3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, then the expanding material taken by weight ratio is added, after making to stir together 3 ~ 10 minutes and reaching and mix, discharging adds the main spout of twin screw extruder, add from the side spout of twin screw extruder the alkali free glass fibre that will take by weight ratio simultaneously, controlled working temperature is at 230 DEG C ~ 260 DEG C, screw speed 150 ~ 400r/min, by extruding after twin screw extruder melt blending, cooling granulation, get product.

The invention has the beneficial effects as follows, the present invention is while both PC, ABS advantage, fiberglass reinforced is adopted to improve the original tensile strength of PC/ABS, flexural strength, bending elastic modulus and surface gloss thereof, and the present invention has good antistatic property, antistatic effect significantly, lastingly; Flame retardant properties, can reach UL94 V-0 level level.

Embodiment

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

A PC/ABS modified alloy for permanent anti-static, its component by mass percent proportioning is: compound 0.3%, the modification ethylene bis-fatty acid amides (TAF) 1.2% of PC 50%, ABS 24%, alkali free glass fibre 10%, polyethylene oxide (PEO) 3%, brominated polycarbonate oligomer (bromo PC) based flame retardant BC-58 8%, carbodiimide 1.5%, methacrylate butadi ene styrene copolymer (MBS) 2%, hindered phenol antioxygen 1010 and phosphite antioxidant 168 1:2 in mass ratio.Wherein, described PC is bisphenol A polycarbonate, and its second-order transition temperature is 145 DEG C ~ 150 DEG C; Described ABS is acrylonitrile-butadiene-styrene copolymer.

Preparation method: (1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by, (2), add in high-speed mixer by taking dry ABS by weight ratio, then compound, the modification ethylene bis-fatty acid amides (TAF) of the polyethylene oxide (PEO) taken by weight ratio, brominated polycarbonate oligomer (bromo PC) based flame retardant BC-58, carbodiimide, hindered phenol antioxygen 1010 and phosphite antioxidant 168 1:2 is in mass ratio added, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying, (3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, then the methacrylate butadi ene styrene copolymer (MBS) taken by weight ratio is added, after making to stir together 3 ~ 10 minutes and reaching and mix, discharging adds the main spout of twin screw extruder, add from the side spout of twin screw extruder the alkali free glass fibre that will take by weight ratio simultaneously, controlled working temperature is at 230 DEG C ~ 260 DEG C, screw speed 150 ~ 350r/min, by extruding after twin screw extruder melt blending, cooling granulation, get product.

Claims (4)

1. the PC/ABS modified alloy of a permanent anti-static, it is characterized in that, its component by mass percent proportioning is: PC 30% ~ 60%, ABS 20% ~ 30%, alkali free glass fibre 8% ~ 12%, Polymer-metallic Catalyst 1% ~ 3%, fire retardant 5% ~ 10%, hydrolysis agent 0.5% ~ 2%, expanding material 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.5% ~ 1.5%.

2. the PC/ABS modified alloy of permanent anti-static according to claim 1, is characterized in that, described Polymer-metallic Catalyst is the one in polyethylene oxide (PEO), polyether ester amides (PEEA), polyether ester imide (PEAI).

3. the PC/ABS modified alloy of permanent anti-static according to claim 1, is characterized in that, described fire retardant is brominated polycarbonate oligomer (bromo PC) based flame retardant BC-52 or BC-58.

4. the preparation method of the PC/ABS modified alloy of permanent anti-static according to claim 1, is characterized in that, comprise the following steps:

(1), by PC in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, ABS at 80 DEG C ~ 90 DEG C dry 2 ~ 4 hours, stand-by;

(2), add in high-speed mixer by taking dry ABS by weight ratio, then add take by weight ratio Polymer-metallic Catalyst, fire retardant, hydrolysis agent, oxidation inhibitor, lubricant, after making to stir together 5 ~ 15 minutes and reaching and mix, discharging add carry out melt blending in twin screw extruder after extrude, cooling granulation, and stand-by after drying;

(3), the product taking dry PC and step (2) is by weight ratio added in high-speed mixer, then the expanding material taken by weight ratio is added, after making to stir together 3 ~ 10 minutes and reaching and mix, discharging adds the main spout of twin screw extruder, add from the side spout of twin screw extruder the alkali free glass fibre that will take by weight ratio simultaneously, controlled working temperature is at 230 DEG C ~ 260 DEG C, screw speed 150 ~ 400r/min, by extruding after twin screw extruder melt blending, cooling granulation, get product.