CN104530630A - Ceramic fiber enhanced flame retardant ABS/PBT alloy material and preparation method thereof - Google Patents

Abstract

The invention provides a ceramic fiber enhanced flame retardant ABS/PBT alloy material and a preparation method thereof. The ceramic fiber enhanced flame retardant ABS/PBT alloy material is prepared from the following components including ABS, PBT, ceramic fibers, a flame retardant, a compatibilizer, a lubricant, a heat stabilizer, an antioxidant and a dispersant. The preparation method comprises the following steps: mixing the raw materials in a high-speed mixer, adding the mixture into a twin screw extruder, and in the extruding process, metering the ceramic fibers by a lateral accurate feeding system, uniformly adding the ceramic fibers, extruding, drawing, cooling, cutting into granules and drying to obtain the final product. The ceramic fiber enhanced flame retardant ABS/PBT alloy material has the advantages of good mechanical properties and excellent flame retardancy.

Description

Ceramic fiber strengthens flame-proof ABS/PBT alloy material and preparation method thereof

Technical field

The invention belongs to macromolecular material and forming process field thereof, is specifically related to a kind of ceramic fiber and strengthens flame-proof ABS/PBT alloy material and preparation method thereof.

Background technology

Polybutylene terephthalate (PBT) plasticity vibrin, has excellent thermotolerance, weathering resistance, and resistance to chemical reagents and the good feature of glossiness, be widely used in the field such as electronic apparatus, houseware.But it is low that PBT has intensity.Poor heat resistance and incendive shortcoming.ABS has excellent mechanical property and dimensional stability.By the plastic alloy material that blended for PBT and ABS available can be excellent, but the performance of ABS/PBT alloy material still can further improve, and to expand its Application Areas, in addition, the flame retardant properties of ABS/PBT alloy material is not fine, needs to be improved further.

In background technology, yet there are no and introduce the pertinent literature of ceramic fiber as PBT material enhancement component, compared with glass fibre, ceramic fiber can tolerate higher temperature, and mechanical property is more excellent.But, using ceramic fiber as the enhancement component of resin, problems of the prior art are: because ceramic fiber length-to-diameter ratio is large, surface charge is uneven, consequent machinery tangles power, electrostatic force etc. and makes ceramic fiber in dispersion medium, be difficult to dispersion, and the clustering phenomena of fiber easily occurs, and fiber is glomeration gradually, just become ceramic fiber ball, the existence of ceramic fiber ball can make reinforced effects greatly reduce.

Summary of the invention

The problem that the invention will solve there is provided a kind of good mechanical properties, and the ceramic fiber of excellent fireproof performance strengthens flame-proof ABS/PBT alloy material and preparation method thereof.

For solving the problems of the technologies described above, the technical scheme that the invention adopts is: a kind of ceramic fiber strengthens flame-proof ABS/PBT alloy material, is made up of following component by weight percentage:

Preferably, the melting index of described ABS is 25-27g/10min (220 DEG C/10kg), and second-order transition temperature is 105-110 DEG C.

Preferably, it is characterized in that: the melting index of described PBT is 57-62g/10min (250 DEG C/2.16kg), and second-order transition temperature is 223-225 DEG C.

Preferably, described fire retardant is one in brominated triazine, antimonous oxide or its mixture.

Preferably, described compatilizer is Zelan 338.

Preferably, described lubricant pentaerythritol tetrastearate.

Preferably, described thermo-stabilizer is at least one in diphenyl-para-phenylene diamine, 4-hydroxyoctadecanoic anilide, triphenyl phosphite, the pungent diphenyl ester of phosphorous acid and Tyox B.

Preferably, described oxidation inhibitor is at least one in phenols primary antioxidant 1010 and auxiliary antioxidant 168.

Preferably, described dispersion agent is Vltra tears (HPMC), at least one in polyacrylamide (PAM).

The invention additionally provides the preparation method that a kind of ceramic fiber strengthens flame-proof ABS/PBT alloy material, and concrete steps are as follows:

(1) ABS, PBT, fire retardant, compatilizer, lubricant, thermo-stabilizer, oxidation inhibitor are mixed 3.5min in high-speed mixer;

(2) added by above-mentioned miscellany in the Strong shear twin screw extruder that length-to-diameter ratio is 32: 1 ~ 40: 1, rotating speed is 350-450rpm, its expressing technique each district temperature range is 200 ~ 240 DEG C, residence time 1-2 minute, and pressure is 12-18Mpa;

(3) in extrusion, ceramic fiber is evenly added by the accurate feed system metering of side direction, obtains the finished product after extruding tie rod, cooling, pelletizing, drying.

The advantage that the invention has and positively effect are:

1. further enhancing ceramic fiber and strengthen flame-proof ABS/PBT alloy material, widen its Application Areas.

2. enhance the flame retardant resistance that ceramic fiber strengthens flame-proof ABS/PBT alloy material.

Embodiment

Below by embodiment, the invention is described further.

Embodiment 1

1. 42.8 kilograms of ABS resin, 40 kilograms of PBT resin, 3 kilograms of brominated triazine fire retardants, 2 kilograms of antimonous oxide fire retardants, 1 kilogram of Zelan 338,0.2 kilogram of pentaerythritol tetrastearate, 0.2 kilogram of diphenyl-para-phenylene diamine, 0.2 kilogram of pungent diphenyl ester of phosphorous acid, 0.2 kilogram of phenols primary antioxidant, 1010,0.2 kilogram of auxiliary antioxidant, 168,0.2 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3., in extrusion, 10 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.

Test its performance by respective standard, be listed as follows:

Embodiment 2

1. 38.1 kilograms of ABS resin, 37 kilograms of PBT resin, 5 kilograms of brominated triazine fire retardants, 3 kilograms of antimonous oxide fire retardants, 2 kilograms of Zelan 338s, 0.5 kilogram of pentaerythritol tetrastearate, 0.2 kilogram of diphenyl-para-phenylene diamine, 0.3 kilogram of pungent diphenyl ester of phosphorous acid, 0.2 kilogram of phenols primary antioxidant, 1010,0.3 kilogram of auxiliary antioxidant, 168,0.4 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3, in extrusion, 13 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.

Test its performance by respective standard, be listed as follows:

Embodiment 3

1. 33.4 kilograms of ABS resin, 35 kilograms of PBT resin, 6 kilograms of brominated triazine fire retardants, 4 kilograms of antimonous oxide fire retardants, 3 kilograms of Zelan 338s, 1 kilogram of pentaerythritol tetrastearate, 0.5 kilogram of diphenyl-para-phenylene diamine, 0.5 kilogram of pungent diphenyl ester of phosphorous acid, 0.5 kilogram of phenols primary antioxidant, 1010,0.5 kilogram of auxiliary antioxidant, 168,0.6 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3, in extrusion, 15 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.Test its performance by respective standard, be listed as follows:

Embodiment 4

1. 28.7 kilograms of ABS resin, 32 kilograms of PBT resin, 7 kilograms of brominated triazine fire retardants, 5 kilograms of antimonous oxide fire retardants, 4 kilograms of Zelan 338s, 1.5 kilograms of pentaerythritol tetrastearates, 0.8 kilogram of diphenyl-para-phenylene diamine, 0.7 kilogram of pungent diphenyl ester of phosphorous acid, 0.8 kilogram of phenols primary antioxidant, 1010,0.7 kilogram of auxiliary antioxidant, 168,0.8 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3., in extrusion, 17 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.

Test its performance by respective standard, be listed as follows:

Embodiment 5

1. 24 kilograms of ABS resin, 29 kilograms of PBT resin, 8 kilograms of brominated triazine fire retardants, 7 kilograms of antimonous oxide fire retardants, 5 kilograms of Zelan 338s, 2 kilograms of pentaerythritol tetrastearates, 1 kilogram of diphenyl-para-phenylene diamine, 1 kilogram of pungent diphenyl ester of phosphorous acid, 1 kilogram of phenols primary antioxidant, 1010,1 kilogram of auxiliary antioxidant, 168,1 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3., in extrusion, 20 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.

Test its performance by respective standard, be listed as follows:

Comparative example 1

1. 42.8 kilograms of ABS resin, 40 kilograms of PBT resin, 3 kilograms of brominated triazine fire retardants, 2 kilograms of antimonous oxide fire retardants, 1 kilogram of Zelan 338,0.2 kilogram of pentaerythritol tetrastearate, 0.2 kilogram of diphenyl-para-phenylene diamine, 0.2 kilogram of pungent diphenyl ester of phosphorous acid, 0.2 kilogram of phenols primary antioxidant, 1010,0.2 kilogram of auxiliary antioxidant, 168,0.2 kilogram of Vltra tears (HPMC) are mixed 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3., in extrusion, 18 kilograms of glass fibre are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.。

Test its performance by respective standard, be listed as follows:

Test event	Unit	Testing standard	Test result
				Tensile strength	MPa	ISO 527-2	91
Notched Izod impact strength	J/M	ISO 180	87
				Flexural strength	MPa	ISO 178	150

Modulus in flexure	MPa	ISO 178	8750
				Heat-drawn wire (1.82MPa)	℃	ISO 75-1	167
Flame retardant properties	--	UL 94	3.2V-0

Comparative example 2

1. by 42.8 kilograms of ABS resin, 40 kilograms of PBT resin, 3 kilograms of brominated triazine fire retardants, 2 kilograms of antimonous oxide fire retardants, 1 kilogram of Zelan 338,0.2 kilogram of pentaerythritol tetrastearate, 0.2 kilogram of diphenyl-para-phenylene diamine, 0.2 kilogram of pungent diphenyl ester of phosphorous acid, 0.2 kilogram of phenols primary antioxidant, 1010,0.2 kilogram of auxiliary antioxidant 168, mix 3.5min in high-speed mixer;

2. the starting material of mixing are placed in the Strong shear twin screw extruder that length-to-diameter ratio is 40: 1, rotating speed is 350-450rpm through melt extruding, granulation, its expressing technique is 200 ~ 210 DEG C, a district, two 220 ~ 230 DEG C, districts, three 230 ~ 240 DEG C, districts, four 215 ~ 225 DEG C, districts, residence time 1-2 minute, pressure is 12-18Mpa;

3, in extrusion, 10 kilograms of ceramic fibers are evenly added by the accurate feed system metering of side direction, after extruding tie rod, cooling, pelletizing, drying, obtains the finished product.。

Test its performance by respective standard, be listed as follows:

Following table is the performance data contrast of embodiment 1 and comparative example 1, comparative example 2:

Comparative example 1 is glass fibre as the contrast of material property during enhancement component and embodiment 1, drawn by correlation data: the flame retardant properties of adding ceramic fiber is obviously better than comparative example 1, it is better than adding the flame retardant properties reinforced effects of glass fibre to ABS/PBT alloy material that interpolation ceramic fiber is described, meanwhile, the material mechanical performance adding ceramic fiber have also been obtained reinforcement.

Comparative example 2 is the contrasts without ABS/PBT alloy and embodiment 1 during dispersion agent, drawn by correlation data: the reinforced effects without dispersion agent material constantly reduces greatly, visible dispersion agent plays a very important role the enhancement of ceramic fiber to ABS/PBT alloy, when without dispersion agent, ceramic fiber in the material dispersion effect is poor, has had a strong impact on reinforced effects.

Above the embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the invention scope change and improve, and all should still belong within this patent covering scope.

Claims (10)

1. ceramic fiber strengthens flame-proof ABS/PBT alloy material, it is characterized in that: be made up of following component by weight percentage:

2. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: the melting index of described ABS is 25-27g/10min (220 DEG C/10kg), and second-order transition temperature is 105-110 DEG C.

3. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: the melting index of described PBT is 57-62g/10min (250 DEG C/2.16kg), and second-order transition temperature is 223-225 DEG C.

4. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described fire retardant is one in brominated triazine, antimonous oxide or its mixture.

5. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described compatilizer is Zelan 338.

6. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described lubricant pentaerythritol tetrastearate.

7. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described thermo-stabilizer is at least one in diphenyl-para-phenylene diamine, 4-hydroxyoctadecanoic anilide, triphenyl phosphite, the pungent diphenyl ester of phosphorous acid and Tyox B.

8. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described oxidation inhibitor is at least one in phenols primary antioxidant 1010 and auxiliary antioxidant 168.

9. ceramic fiber according to claim 1 strengthens flame-proof ABS/PBT alloy material, it is characterized in that: described dispersion agent is Vltra tears (HPMC), at least one in polyacrylamide (PAM).

10. ceramic fiber according to claim 1 strengthens the preparation method of flame-proof ABS/PBT alloy material, it is characterized in that: concrete steps are as follows:

(1) ABS, PBT, fire retardant, compatilizer, lubricant, thermo-stabilizer, oxidation inhibitor are mixed 3.5min in high-speed mixer;

(2) added by above-mentioned miscellany in the Strong shear twin screw extruder that length-to-diameter ratio is 32: 1 ~ 40: 1, rotating speed is 350-450rpm, its expressing technique each district temperature range is 200 ~ 240 DEG C, residence time 1-2 minute, and pressure is 12-18Mpa;

(3) in extrusion, ceramic fiber is evenly added by the accurate feed system metering of side direction, obtains the finished product after extruding tie rod, cooling, pelletizing, drying.