CN101092501A - PA6 / ABS alloy material, and preparation method - Google Patents

Abstract

This invention discloses a method for preparing PA6/ABS alloy material, which comprises: PA6 20-65%, ABS 10-70%, compatibilizer, 0.1-20%, composite flame retardant 5-30%, lubricant 0.1-0.6%, and antioxidant 0.1-1.2%. The PA6/ABS alloy material has such advantages as high flame retardancy, no toxicity, good physical properties, simple preparation, high dimensional stability, high strength, good appearance, high fluidity and high chemical resistance, and is environmentally friendly.

Description

A kind of PA6/ABS alloy material and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, relate in particular to a kind of PA6/ABS alloy material and preparation method thereof.

Background technology

Nylon/ABS alloy is to be released by the Borg.Warner Chemical company of the U.S. and Monsanto company the earliest, has heat-drawn wire than nylon 6 (PA6) height, and the higher characteristics of vicat softening temperature, thereby become the ideal material of making trolley parts such as vehicle body plate shell at first.Because nylon/ABS alloy material remedied PA material water-absorbent, the unsettled characteristics of size, and have the characteristics of high impulse strength, thereby be fit to be applied to make electronic apparatus, household appliance shell.

But for electronic apparatus, household appliance shell material require fire-retardant characteristics are arranged, and existing nylon/ABS alloy material do not possess the performance of this respect.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of PA6/ABS alloy material with flame retardant resistance, and corresponding, the present invention also provides a kind of preparation method of PA6/ABS alloy material.

For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions.

A kind of PA6/ABS alloy material, its composition is (%) by weight ratio:

PA6 20-65％；

ABS 10-70％；

Compatilizer 0.1-20%;

Composite flame-retardant agent 5-30%;

Lubricant 0.1-0.6%;

Oxidation inhibitor 0.1-1.2%.

Wherein, the relative viscosity of described PA6 is 2.4-3.8PS.

Wherein, ABS is an acrylonitrile-butadiene-styrene terpolymer, and its rubber content is 15-70%.

Wherein, compatilizer is ABS-g-MAH, acrylonitrile-styrene-copolymer-maleic anhydride or SEBS-g-MAH.

Wherein, described composite flame-retardant agent is a brominated flame-retardant and antimonous oxide is composite forms.

Wherein, described brominated flame-retardant is one or more the mixture in Poly Brominated Diphenyl Ethers, TDE, brominated Polystyrene, brominated polystyrene, brominated epoxy resin, the brominated polycarbonate.

Wherein, described lubricant is the ultra-high molecular weight polysiloxane.

Wherein, described oxidation inhibitor is the composite of four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester primary antioxidants and tricresyl phosphite (2,4-di-t-butyl phenyl ester) auxiliary anti-oxidant.

A kind of preparation method of PA6/ABS alloy material comprises step:

A: take by weighing PA6 and ABS by weight ratio, mix;

B: take by weighing compatilizer and composite flame-retardant agent by weight ratio, mix;

C: take by weighing lubricant and oxidation inhibitor by weight ratio, mix, the above-mentioned material that mixes is joined in the mixing tank together continue to mix until evenly;

D: mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: twin screw extruder one district 215-240 ℃, two district 215-240 ℃, three district 215-240 ℃, four district 215-240 ℃, five district 215-240 ℃, six district 215-240 ℃, seven district 215-240 ℃, eight district 215-240 ℃; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Above technical scheme as can be seen, the present invention has following beneficial effect:

1: the present invention fuses together PA6 system and ABS system by selecting suitable fire retardant, and prepared material has fire-retardant characteristic, and environment-protecting asepsis;

2: guaranteed alloy material when having anti-flaming function, its every physical and mechanical property excellence;

3: the preparation technology of this fire retardant alloy material is simple, and has characteristics such as dimensional stabilizing, high strength, outward appearance are good, high workability, resistance to chemical reagents.

Embodiment

Technical scheme of the present invention provides a kind of fire-retardant nylon and ABS alloy material, and it is made up of a mixture, and its weight proportion consists of:

PA6 20-65%, ABS 10-70%, compatilizer 0.1-20%, composite flame-retardant agent 5-30%, lubricant 0.1-0.6%, oxidation inhibitor 0.1-1.2%;

Wherein, the relative viscosity of PA6 is 2.4-3.8PS; ABS is an acrylonitrile-butadiene-styrene terpolymer, and its rubber content is 15-70%; Compatilizer can be the polymer graft maleic anhydride, as ABS-g-MAH, acrylonitrile-styrene-copolymer-maleic anhydride, SEBS-g-MAH; Fire retardant is a brominated flame-retardant and antimonous oxide is composite forms; Wherein brominated flame-retardant can be one or more mixture of Poly Brominated Diphenyl Ethers, TDE, brominated Polystyrene, brominated polystyrene, brominated epoxy resin, brominated polycarbonate; Lubricant is the ultra-high molecular weight polysiloxane; Oxidation inhibitor is composite 1010/168 (1: 1) of four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester primary antioxidants and tricresyl phosphite (2,4-di-t-butyl phenyl ester) auxiliary anti-oxidant.

In the present invention, take by weighing PA6 and ABS by weight ratio, mix; Take by weighing compatilizer and composite flame-retardant agent by weight ratio, mix; Take by weighing lubricant and oxidation inhibitor by weight ratio, mix; The above-mentioned material that mixes joined in the mixing tank together continue to mix until evenly; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: twin screw extruder one district 215-240 ℃, two district 215-240 ℃, three district 215-240 ℃, four district 215-240 ℃, five district 215-240 ℃, six district 215-240 ℃, seven district 215-240 ℃, eight district 215-240 ℃; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Wherein, advantage such as PA6 has wear-resisting, anti-solvent, oil resistant, use temperature are wide is the engineering plastics of current production rate maximum.

ABS combines glossiness that vinylbenzene has and formability, vinyl cyanide and has rigidity and resistance to chemical reagents and excellent mechanical property, the shock-resistance that divinyl has, and can improve dimensional stability, shock strength, chemical resistant properties and the processing characteristics of nylon with nylon blending.

Because belonging to the adding of thermodynamics incompatible material acrylonitrile-styrene-copolymer-maleic anhydride, nylon and ABS can greatly improve both consistencies, improve the shock strength and the elongation at break of material, but because the fragility of acrylonitrile-styrene-copolymer-maleic anhydride self, add excessive acrylonitrile-styrene-copolymer-maleic anhydride and can reduce the impact of material on the contrary, therefore the relatively more suitable addition of compatilizer is 1-20%, and better addition is 3-15%.

Composite flame-retardant agent is by brominated flame-retardant with antimonous oxide is composite forms in the fire-retardant PA6/ABS mixture of the present invention, the interpolation of fire retardant has certain influence to the impact property of whole material system, but because brominated flame-retardant and antimonous oxide have good synergistic, the flame retarding efficiency height, do not need excessive interpolation, comparatively Shi Yi addition is 5-30%, and better addition is 13-25%.

For ease of the present invention is further understood, now describe the present invention in conjunction with specific embodiments:

Embodiment 1:

Weight ratio PA6 51%, ABS 20%, compatilizer 6.4%, composite flame-retardant agent (TDE 15%, antimonous oxide 7%), lubricant 0.3%, 1,010 0.15%, 168 0.15% are mixed in plastic containers; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: 230 ℃ in twin screw extruder one district, 235 ℃ in two districts, 235 ℃ in three districts, 235 ℃ in four districts, 235 ℃ in five districts, 230 ℃ in six districts, 230 ℃ in seven districts, 230 ℃ in eight districts; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Embodiment 2

Weight ratio PA6 35.5%, ABS 35.5%, compatilizer 6.4%, composite flame-retardant agent (TDE 15%, antimonous oxide 7%), lubricant 0.3%, 1,010 0.15%, 168 0.15% are mixed in plastic containers; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: 230 ℃ in twin screw extruder one district, 235 ℃ in two districts, 235 ℃ in three districts, 235 ℃ in four districts, 235 ℃ in five districts, 230 ℃ in six districts, 230 ℃ in seven districts, 230 ℃ in eight districts; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Embodiment 3

Weight ratio PA6 34.5%, ABS 34.5%, compatilizer 6.4%, composite flame-retardant agent (brominated polystyrene 18%, antimonous oxide 6%), lubricant 0.3%, 1,010 0.15%, 168 0.15% are mixed in plastic containers; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: 230 ℃ in twin screw extruder one district, 235 ℃ in two districts, 235 ℃ in three districts, 235 ℃ in four districts, 235 ℃ in five districts, 230 ℃ in six districts, 230 ℃ in seven districts, 230 ℃ in eight districts; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Embodiment 4:

Weight ratio PA6 20%, ABS 51%, compatilizer 6.4%, composite flame-retardant agent (TDE 15%, antimonous oxide 7%), lubricant 0.3%, 1,010 0.15%, 168 0.15% are mixed in plastic containers; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: 225 ℃ in twin screw extruder one district, 230 ℃ in two districts, 235 ℃ in three districts, 235 ℃ in four districts, 235 ℃ in five districts, 230 ℃ in six districts, 230 ℃ in seven districts, 225 ℃ in eight districts; The screw rod revolution is controlled at 330 rev/mins; The residence time 2～10min.

Embodiment 5:

Weight ratio PA6 61%, ABS 12%, compatilizer 4.4%, composite flame-retardant agent (TDE 15%, antimonous oxide 7%), lubricant 0.3%, 1,010 0.15%, 168 0.15% are mixed in plastic containers; Mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: 230 ℃ in twin screw extruder one district, 235 ℃ in two districts, 235 ℃ in three districts, 235 ℃ in four districts, 235 ℃ in five districts, 230 ℃ in six districts, 230 ℃ in seven districts, 230 ℃ in eight districts; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.

Performance test:

Tensile strength is tested by the GB/T1040 standard.Specimen types is the I type, batten size (mm): 170 (length) * (20 ± 0.2) (end width) * (4 ± 0.2) (thickness), and draw speed is 50mm/min;

Flexural strength and modulus in flexure are tested by the GB9341/T standard.Specimen types is specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2), rate of bending are 20mm/min;

Notched Izod impact strength is tested by the GB/T1043 standard.Specimen types is the I type, specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2); The breach type is a category-A, and the breach residual thickness is 3.2mm.

Embodiment 1～5 prescription and material property see Table 1:

Table 1

Project	Testing method	Unit	Index
								Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5
			Tensile strength	GB/T1040	MPa	46.0	41.5						40.6	35.8	48.0
Elongation at break	GB/T1040	％						38.0	45.0	43.5	48.6	39
			Flexural strength	GB9341/T	MPa	65	48.5						50.0	42.0	70
Modulus in flexure	GB9341/T	MPa						2150	1650	1700	1500	2430
			Notched Izod impact strength	GB/T1043	KJ/M2	9.6	14.5						11.5	15.0	7.8
Flame retardant properties	UL-94	0.8mm						V0	V0	V0	V0	V0

From embodiment 1, the adding of fire retardant increases the anti-flaming function of material, and is very little to the influence of the physical and mechanical property of material.

From embodiment 2～5, the adding of fire retardant is very little to the physical and mechanical property influence of material.The consideration of comprehensive flame retardant effect and cost, the optimum addition of fire retardant is 13-25%.

More than a kind of PA6/ABS alloy material provided by the present invention and preparation method thereof is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (9)

1, a kind of PA6/ABS alloy material is characterized in that, its composition is (%) by weight ratio:

PA6 20-65％；

ABS 10-70％；

Compatilizer 0.1-20%;

Composite flame-retardant agent 5-30%;

Lubricant 0.1-0.6%;

Oxidation inhibitor 0.1-1.2%.

2, PA6/ABS alloy material as claimed in claim 1 is characterized in that: the relative viscosity of described PA6 is 2.4-3.8PS.

3, PA6/ABS alloy material as claimed in claim 1 or 2 is characterized in that: ABS is an acrylonitrile-butadiene-styrene terpolymer, and its rubber content is 15-70%.

4, claim 1 or 2 described PA6/ABS alloy materials, it is characterized in that: compatilizer is ABS-g-MAH, acrylonitrile-styrene-copolymer-maleic anhydride or SEBS-g-MAH.

5, PA6/ABS alloy material as claimed in claim 1 or 2 is characterized in that: described composite flame-retardant agent is a brominated flame-retardant and antimonous oxide is composite forms.

6, PA6/ABS alloy material as claimed in claim 5 is characterized in that: described brominated flame-retardant is one or more the mixture in Poly Brominated Diphenyl Ethers, TDE, brominated Polystyrene, brominated polystyrene, brominated epoxy resin, the brominated polycarbonate.

7, PA6/ABS alloy material as claimed in claim 6 is characterized in that: described lubricant is the ultra-high molecular weight polysiloxane.

8, PA6/ABS alloy material as claimed in claim 6 is characterized in that: described oxidation inhibitor is the composite of four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester primary antioxidants and tricresyl phosphite (2,4-di-t-butyl phenyl ester) auxiliary anti-oxidant.

9, a kind of preparation method of PA6/ABS alloy material as claimed in claim 1 is characterized in that, comprises step:

A: take by weighing PA6 and ABS by weight ratio, mix;

B: take by weighing compatilizer and composite flame-retardant agent by weight ratio, mix;

C: take by weighing lubricant and oxidation inhibitor by weight ratio, mix, the above-mentioned material that mixes is joined in the mixing tank together continue to mix until evenly;

D: mixed raw materials is put into the loading hopper of twin screw extruder, through melt extruding, granulation, fully plasticizing, fusion, compound, again through extrude, tie rod, cooling, pelletizing, oven dry and packing; Complete processing is as follows: twin screw extruder one district 215-240 ℃, two district 215-240 ℃, three district 215-240 ℃, four district 215-240 ℃, five district 215-240 ℃, six district 215-240 ℃, seven district 215-240 ℃, eight district 215-240 ℃; The screw rod revolution is controlled at 350 rev/mins; The residence time 2～10min.