CN100545210C

CN100545210C - The preparation method of a kind of halogen-free flameproof heat-proof ABS/PA alloy

Info

Publication number: CN100545210C
Application number: CNB2007100303127A
Authority: CN
Inventors: 张积宾; 曾斌; 郭庆时; 王雄刚; 刘淳; 陈勇
Original assignee: FOSHAN SHUNDE DISTRICT GAOYI NEW PLASTIC Co Ltd
Current assignee: FOSHAN SHUNDE DISTRICT GAOYI NEW PLASTIC Co Ltd
Priority date: 2007-09-15
Filing date: 2007-09-15
Publication date: 2009-09-30
Anticipated expiration: 2027-09-15
Also published as: CN101125949A

Abstract

The invention discloses the preparation method of a kind of halogen-free flameproof heat-proof ABS/PA alloy, the product good mechanical performance of making by this technology, especially shock strength height, the heat-drawn wire height, simultaneously, because use is not halogen-containing environmental protection fire retarding agent, meet the RoHS of European Union instruction fully, environmentally friendly, satisfy the safety and the environment requirement that improve day by day.

Description

The preparation method of a kind of halogen-free flameproof heat-proof ABS/PA alloy

Technical field

The present invention relates to the alloy technology field, the preparation method of particularly a kind of halogen-free flameproof heat-proof ABS/PA alloy.

Background technology

The ABS/PA alloy is one of metal substitute material on the component such as a kind of interior trim, dashboard, air conditioner heat radiator grid of extensive utilization automobile, current ABS/PA alloy has the following weak point, the consistency of 1:ABS/PA is bad, causes the mechanical property of alloy monolithic not good enough; 2: halogens too high levels, halogen exert an influence to environment in degradation process environment are had certain contamination; 3: the resistance to impact shock ability, especially when low-temperature condition, its toughness will sharply reduce, and cause material failure easily; 4: the ability of resistance of oxidation and ultraviolet radiation resisting, the work-ing life of material is not high; 5: production efficiency is not high, to the serious wear of equipment.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides the preparation method of a kind of halogen-free flameproof heat-proof ABS/PA alloy.

The technical solution adopted for the present invention to solve the technical problems is:

The preparation method of a kind of halogen-free flameproof heat-proof ABS/PA alloy:

1): take by weighing according to weight proportion: ABS:40～60%, micro encapsulation red phosphorus: 10～30%, melamine cyanurate MCA:5～15%, polymeric amide PA:5～20%, oxidation inhibitor: 0.1～0.5%, compatilizer: 1～5%;

2): it is even to thorough mixing according to weight proportion ABS and polymeric amide PA to be mixed back high-speed stirring 3～5 minutes;

3): the material that step (2) is obtained adds oxidation inhibitor and compatilizer according to weight proportion, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

4): the material that step (3) is obtained adds micro encapsulation red phosphorus and melamine cyanurate MCA according to weight proportion, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

5): adopt common parallel dual-screw extruding machine under 150～230 ℃ of temperature, the material that step (4) obtains to be extruded.

The invention has the beneficial effects as follows: this product good mechanical performance, especially shock strength height, heat-drawn wire height, simultaneously, because use is not halogen-containing environmental protection fire retarding agent, meet the RoHS of European Union instruction fully, environmentally friendly, satisfy the safety and the environment requirement that improve day by day.

Embodiment

5): adopt common parallel dual-screw extruding machine under 150～230 ℃ of temperature, the material that step (4) obtains to be extruded.The screw slenderness ratio of parallel dual-screw extruding machine is 1: 24～1: 36.

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

Embodiment 1:

1): take by weighing raw material according to weight proportion;

2): it is even to thorough mixing that the ABS with 50% and 15% polymeric amide (PA6) mix back high-speed stirring 3～5 minutes;

3): the material that (2) step is obtained adds 0.3% oxidation inhibitor and 3.7% compatilizer, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

4): the material that (3) step is obtained adds 20% micro encapsulation red phosphorus and 11% melamine cyanurate MCA, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

5): adopt common parallel dual-screw extruding machine under 150～230 ℃ of temperature, the material that step (4) obtains to be extruded; The screw slenderness ratio of parallel dual-screw extruding machine is 1: 24.

Embodiment 2:

1): take by weighing raw material according to weight proportion;

2): it is even to thorough mixing that the ABS with 40% and 18% polymeric amide (PA6) mix back high-speed stirring 3～5 minutes;

3): the material that step (2) is obtained adds 0.3% oxidation inhibitor and 3.7% compatilizer, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

4): the material that step (3) is obtained adds 25% micro encapsulation red phosphorus and 13% melamine cyanurate MCA, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

5): adopt common parallel dual-screw extruding machine under 150～230 ℃ of temperature, the material that step (4) obtains to be extruded; The screw slenderness ratio of parallel dual-screw extruding machine is 1: 36.

Embodiment 3:

1): take by weighing raw material according to weight proportion;

2): it is under 500 rev/mins the condition that the ABS with 60% and 6% polymeric amide (PA66) mix the back low whipping speed, stir 3～5 minutes even to thorough mixing;

3): the material that step (2) is obtained adds 0.4% oxidation inhibitor and 4.6% compatilizer, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

4): the material that step (3) is obtained adds 12% micro encapsulation red phosphorus and 7% melamine cyanurate MCA, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

Embodiment 4:

1): take by weighing raw material according to weight proportion;

2): it is even to thorough mixing that the ABS with 58% and 10% polymeric amide (PA1010) mix back high-speed stirring 3～5 minutes;

4): the material that step (3) is obtained adds 12% micro encapsulation red phosphorus and 6% melamine cyanurate MCA, and it is even to thorough mixing to mix back high-speed stirring 3～5 minutes;

This product has effectively kept the excellent mechanical performances of ABS, and especially resistance to impact shock can also make notched Izod impact strength remain on more than the 12KJ/m2 on the basis of satisfying multiple functions such as heat-resisting and environmental protection flame retardant; And; this product adopts micro encapsulation red phosphorus and the composite flame-retardant system of MCA (melamine cyanurate); can keep ABS good mechanical performance and reach UL94V-0 level flame retardant effect; wherein micro encapsulation red phosphorus and PA can quicken the charcoal that becomes of ABS in combustion processes; thereby and form the charcoal layer at the burning surface of material and play flame retardant effect; and MCA forms gas phase protection at burning surface, dilution oxygen concentration.By the double shielding of charcoal layer and gas phase, fundamentally solve the fire-retardant problem of ABS.

PA has following obvious effect in alloy system: a, char-forming agent: PA provides the red phosphorus flame-retardant system to be dehydrated into the Sauerstoffatom of charcoal when generating tetra-sodium, finds that by simultaneous test PA is more effective than the effect of other char-forming agent; B, by improving the consistency of ABS and PA, PA has significantly toughness reinforcing, enhancement, can improve the mechanical property of system; The synergistic effect of c, red phosphorus combustion inhibitor and PA has improved the heat-drawn wire of system; D, PA itself have the weather resistance that has obviously improved system after better weather energy and the ABS blend; (3) improvement of weather resistance has improved the performance of ABS heat oxygen aging resistance and photoaging, makes the range of application of ABS more extensive.

This product good mechanical performance, especially shock strength height, the heat-drawn wire height is not halogen-containing environmental protection fire retarding agent owing to what use simultaneously, meets the RoHS of European Union instruction fully, and is environmentally friendly, satisfies the safety and the environment requirement that improve day by day.

Claims

1. the preparation method of halogen-free flameproof heat-proof ABS/PA alloy is characterized in that:

2): ABS and polymeric amide PA are mixed back high-speed stirring 3～5 minutes to mixing according to weight proportion;

3): the material that step (2) is obtained adds oxidation inhibitor and compatilizer according to weight proportion, mixes back high-speed stirring 3～5 minutes to mixing;

4): the material that step (3) is obtained adds micro encapsulation red phosphorus and melamine cyanurate MCA according to weight proportion, mixes back high-speed stirring 3～5 minutes to mixing;

2. the preparation method of a kind of halogen-free flameproof heat-proof ABS according to claim 1/PA alloy is characterized in that: the screw slenderness ratio of the described common parallel dual-screw extruding machine of step (5) is 1: 24～1: 36.