CN104629332A - Core-shell particle filling modified PC/ABS alloy, and preparation method thereof - Google Patents

Abstract

The invention discloses a core-shell particle filling modified PC/ABS alloy, and a preparation method thereof. The core-shell particle filling modified PC/ABS alloy comprises following ingredients, by mass, 40 to 60% of PC, 20 to 30% of ABS, 5 to 15% of an inorganic particle, 5 to 10% of an elastomer, 0.2 to 1% of maleic acid, 0.1 to 0.5% of an initiator, 4 to 8% of a flame retardant, 1 to 3% of a compatilizer, 0.1 to 0.5% of an antioxidant, and 0.1 to 1% of a lubricant. Beneficial effects of the preparation method are that: the inorganic particle is taken as a core material, and the elastomer is taken as a shell material so as to obtain a core-shell structure; the core-shell structure is used for filling modification of PC/ABS alloy, so that the core-shell particle filling modified PC/ABS alloy possesses excellent properties of PC and ABS, and tensile strength, impact intensity, rigidity, thermal deformation temperature, and chemical resistance of the core-shell particle filling modified PC/ABS alloy are improved greatly.

Description

The filling-modified PC/ABS Alloy And Preparation Method of a kind of core-shell particles

Technical field

The present invention relates to technical field of polymer materials, specifically the filling-modified PC/ABS Alloy And Preparation Method of a kind of core-shell particles.

Background technology

PC/ABS alloy (polycarbonate/acrylonitrile-butadiene-phenylethene copolymer), there is good formability and low-temperature impact-resistant performance, higher heat-drawn wire and light stability, be the ideal polymer engineering plastics of a kind of performance, can be applicable to a lot of field.But because PC/ABS alloy belongs to the polymer alloy system of limited compatibility, cause the toughness of PC/ABS bad and affect its mechanical property to a certain extent, strongly limit its application in some field.In order to improve performance and the broadened application scope of PC/ABS alloy, usually adopting and adding three components, as compatilizer, inorganic particulate, elastomerics etc., the mechanical property of alloy material can be significantly improved, thus there is good using value.Wherein, in PC/ABS alloy, add elastomerics can play good toughening modifying effect, but be used alone, reduce the rigidity of PC/ABS alloy; Although add separately inorganic particulate improve the rigidity in co-mixing system but also reduce its toughness in PC/ABS alloy; Elastomerics, inorganic particulate are shared modification PC/ABS alloy, and while raising intensity and toughness, elastomerics and inorganic particulate will influence each other and the mechanical property of PC/ABS can not be made well to obtain the modified effect of expecting.

Summary of the invention

The object of the present invention is to provide a kind of elastomer coated inorganic particle to significantly improve toughness and keep again better rigidity and the filling-modified PC/ABS Alloy And Preparation Method of core-shell particles with good flame-retardance energy.

The technical solution adopted for the present invention to solve the technical problems is: the filling-modified PC/ABS alloy of a kind of core-shell particles, and its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, inorganic particulate 5% ~ 15%, elastomerics 5% ~ 10%, maleic acid 0.2% ~ 1%, initiator 0.1% ~ 0.5%, fire retardant 4% ~ 8%, compatilizer 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

Described PC is bisphenol A polycarbonate.

Described ABS is acrylonitrile-butadiene-styrene copolymer, and the mass percent content of its divinyl contained is 5% ~ 30%.

Described inorganic particulate is particle diameter calcium carbonate, calcium oxide, silicon-dioxide, the one in barium sulfate of 0.5 ~ 20 μm.

Described elastomerics is the one in ethylene-octene copolymer (POE), styrene-butadiene-styrene block copolymer (SBS), SIS/SEBS (SEBS), acrylonitrile-vinyl-acryl butadiene styrene multipolymer (AES).

Described initiator is the one in isopropyl benzene hydroperoxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate.

Described fire retardant is one or more in decabromodiphynly oxide, brominated epoxy resin (EC), ammonium polyphosphate (APP), melamine urate (MCA), melamine polyphosphate (MPP).

Described compatilizer is styrene-acrylonitrile-methacrylic sour water glyceryl ester (SAG).

Described oxidation inhibitor is one or more in antioxidant 1010, antioxidant 1076, oxidation inhibitor 2921, oxidation inhibitor 245, irgasfos 168.

Described lubricant is the one in calcium stearate, ethylene bis stearamide, pentaerythritol stearate.

The preparation method of the filling-modified PC/ABS alloy of above-mentioned a kind of core-shell particles, 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, fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by;

(2), the inorganic particulate taken by weight ratio being added barrel temperature is in 40 DEG C ~ 75 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic acid and initiator that take by weight ratio is added, stir 10 ~ 45 minutes, add the elastomerics taken by weight ratio again, stir 10 ~ 15 minutes;

(3) in high-speed mixer, then add the PC, ABS, the fire retardant that take drying by weight ratio again, and add the compatilizer, oxidation inhibitor and the lubricant that take by weight ratio, after making to stir together 5 ~ 25 minutes and reaching and mix, discharging is stand-by;

(4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 225 DEG C ~ 270 DEG C, cooling granulation, get product.

The invention has the beneficial effects as follows, with the interphase interaction of elastomerics and graft reaction occurs after the present invention adopts surface of inorganic particles pre-treatment, being formed with inorganic particulate is core, elastomerics is that the nucleocapsid structure of shell is for filling-modified PC/ABS alloy, make alloy system with PC, ABS is separately while original excellent properties, substantially increase the tensile strength of alloy system, shock strength, rigidity, heat-drawn wire, the performances such as chemicals-resistant, add the flame-retardant modified effective of amount of retardant simultaneously and UL94 V-0 class requirement can be reached, at automobile, electronic apparatus, chemical industry, machinery, in the fields such as instrument, application has very high practical value and prospect.

Embodiment

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

The filling-modified PC/ABS alloy of a kind of core-shell particles, its component by mass percent proportioning is: PC 47%, ABS 20%, particle diameter are at calcium carbonate 10%, ethylene-octene copolymer (POE) 10%, maleic acid 1%, isopropyl benzene hydroperoxide 0.5%, brominated epoxy resin (EC) 8%, styrene-acrylonitrile-methacrylic sour water glyceryl ester (SAG) 2.5%, antioxidant 1010 0.2%, the calcium stearate 0.8% of 0.5 ~ 20 μm.Wherein, described PC is bisphenol A polycarbonate; Described ABS is acrylonitrile-butadiene-styrene copolymer, and the mass percent content of its divinyl contained is 5% ~ 30%.

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, brominated epoxy resin (EC) at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by; (2), the particle diameter taken by weight ratio being added barrel temperature at the calcium carbonate of 0.5 ~ 20 μm is in 40 DEG C ~ 75 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic acid and isopropyl benzene hydroperoxide that take by weight ratio is added, stir 10 ~ 45 minutes, add the ethylene-octene copolymer (POE) taken by weight ratio again, stir 10 ~ 15 minutes; (3), then add again in high-speed mixer and take dry PC, ABS, brominated epoxy resin (EC) by weight ratio, and add the styrene-acrylonitrile that takes by weight ratio-methacrylic sour water glyceryl ester (SAG), antioxidant 1010 and calcium stearate, after making to stir together 5 ~ 25 minutes and reaching and mix, discharging is stand-by; (4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 225 DEG C ~ 270 DEG C, cooling granulation, get product.

Claims (7)

1. the filling-modified PC/ABS alloy of core-shell particles, it is characterized in that, its component by mass percent proportioning is: PC 40% ~ 60%, ABS 20% ~ 30%, inorganic particulate 5% ~ 15%, elastomerics 5% ~ 10%, maleic acid 0.2% ~ 1%, initiator 0.1% ~ 0.5%, fire retardant 4% ~ 8%, compatilizer 1% ~ 3%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the filling-modified PC/ABS alloy of a kind of core-shell particles according to claim 1, is characterized in that, described inorganic particulate is particle diameter calcium carbonate, calcium oxide, silicon-dioxide, the one in barium sulfate of 0.5 ~ 20 μm.

3. the filling-modified PC/ABS alloy of a kind of core-shell particles according to claim 1, it is characterized in that, described elastomerics is the one in ethylene-octene copolymer (POE), styrene-butadiene-styrene block copolymer (SBS), SIS/SEBS (SEBS), acrylonitrile-vinyl-acryl butadiene styrene multipolymer (AES).

4. the filling-modified PC/ABS alloy of a kind of core-shell particles according to claim 1, it is characterized in that, described initiator is the one in isopropyl benzene hydroperoxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate.

5. the filling-modified PC/ABS alloy of a kind of core-shell particles according to claim 1, it is characterized in that, described fire retardant is one or more in decabromodiphynly oxide, brominated epoxy resin (EC), ammonium polyphosphate (APP), melamine urate (MCA), melamine polyphosphate (MPP).

6. the filling-modified PC/ABS alloy of a kind of core-shell particles according to claim 1, is characterized in that, described compatilizer is styrene-acrylonitrile-methacrylic sour water glyceryl ester (SAG).

7. the preparation method of the filling-modified PC/ABS alloy of a kind of core-shell particles 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, fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by;

(2), the inorganic particulate taken by weight ratio being added barrel temperature is in 40 DEG C ~ 75 DEG C high-speed mixers, stir 3 ~ 15 minutes, then the maleic acid and initiator that take by weight ratio is added, stir 10 ~ 45 minutes, add the elastomerics taken by weight ratio again, stir 10 ~ 15 minutes;

(3) in high-speed mixer, then add the PC, ABS, the fire retardant that take drying by weight ratio again, and add the compatilizer, oxidation inhibitor and the lubricant that take by weight ratio, after making to stir together 5 ~ 25 minutes and reaching and mix, discharging is stand-by;

(4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 225 DEG C ~ 270 DEG C, cooling granulation, get product.