CN104845067A - Inorganic particle filled and modified PBT powder and preparation method thereof - Google Patents

Abstract

The present invention discloses inorganic particle filled and modified PBT powder and a preparation method thereof, wherein the inorganic particle filled and modified PBT powder comprises, by mass, 50-70% of PBT, 5-15% of inorganic particles, 5-10% of TPU, 2-5% of E-MA-GMA, 8-15% of a fire retardation agent, 0.1-0.5% of an aluminum titanium composite coupling agent, 0.1-0.5% of erucylamide, 0.1-0.5% of a composite antioxidant, and 0.1-1% of pentaerythrityl tetrastearate. The inorganic particle filled and modified PBT powder of the present invention has the following beneficial effects that: the inorganic particles are used to fill and modify the PBT and the proper amounts of the TPU and the E-MA-GMA are added so as to provide the synergistic effect, such that the good mechanical strength is maintained while the impact toughness, the stiffness and the heat resistance are significantly improved, the cost is reduced, the fire retardation is good, and the preparation process is simple and easy to operate.

Description

Inorganic particle filled modified PBT powder and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of inorganic particle filled modified PBT powder and preparation method thereof.

Background technology

Polybutylene terephthalate (being called for short PBT) is a kind of crystalline thermoplastic polyester's resin, is applied widely in a lot of field, and becomes the fifth-largest general engineering plastic.But simple PBT material exists, and notched Izod impact strength is low, fragility large, the shortcoming of poor fire, limits range of application.

Summary of the invention

The object of the present invention is to provide inorganic particle filled modified PBT powder that a kind of mechanical strength is good, toughness is high and with low cost and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: inorganic particle filled modified PBT powder, and its component by mass percent proportioning is: PBT 50% ~ 70%, inorganic particulate 5% ~ 15%, TPU 5% ~ 10%, E-MA-GMA 2% ~ 5%, fire retardant 8% ~ 15%, aluminium titanium composite coupler 0.1% ~ 0.5%, erucicamide 0.1% ~ 0.5%, composite antioxidant 0.1% ~ 0.5%, pentaerythritol stearate 0.1% ~ 1%.

Described PBT is polybutylene terephthalate.

Described inorganic particulate is particle diameter at the water-ground limestone of 0.1 μm ~ 20 μm.

Described TPU is thermoplastic polyurethane.

Described E-MA-GMA is ethylene-ethylacrylate-glycidyl methacrylate triblock copolymer.

Described fire retardant be triphenylphosphate, the two idol-diphenyl phosphate of Resorcinol, bisphosphate diphenyl pentaerythritol, two idol-(diphenyl phosphate) of dihydroxyphenyl propane, red phosphor masterbatch one or more.

Described composite antioxidant is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the mixture of phosphite ester kind antioxidant 168.

The preparation method of inorganic particle filled modified PBT powder of the present invention, comprises the following steps:

(1), by PBT at 130 DEG C ~ 150 DEG C dry 2 ~ 4 hours, fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by;

(2), by mass percent proportioning take inorganic particulate and aluminium titanium composite coupler, add in super mixer, stir 15 ~ 45 minutes at 100 DEG C ~ 120 DEG C temperature, make to disperse completely with coated after, be cooled to lower than 40 DEG C of dischargings, stand-by;

(3), take step (1) by mass percent proportioning and obtain dry PBT and fire retardant, add in super mixer, add the material that TPU, the E-MA-GMA, erucicamide, composite antioxidant, pentaerythritol stearate and the step (2) that take by mass percent proportioning obtain simultaneously, make to stir 3 ~ 15 minutes together, after fully mixing, discharging;

(4), the compound that step (3) obtains is added twin screw extruder melt extrude, and after overcooling, granulation, drying, then be broken into fine powder by plastic crusher and sieve, choose 120 ~ 240 objects compositions, namely obtain the present invention.

The invention has the beneficial effects as follows, the present invention adopts inorganic particle filled modified PBT, and add the synergistic effect of appropriate TPU and E-MA-GMA, make while the better mechanical strength of maintenance, significantly improve toughness, rigidity and resistance toheat, reduce cost, and flame retardant properties is good, the simple and easy handling of preparation technology.

Embodiment

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

Embodiment 1:

A kind of inorganic particle filled modified PBT powder, its component by mass percent proportioning is: PBT 53%, particle diameter are at water-ground limestone 15%, TPU 10%, E-MA-GMA 5%, triphenylphosphate 15%, aluminium titanium composite coupler 0.3%, erucicamide 0.5%, composite antioxidant 0.2%, the pentaerythritol stearate 1% of 0.1 μm ~ 20 μm.Wherein, described composite antioxidant is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the mixture of phosphite ester kind antioxidant 168.

Its preparation method is: (1), by PBT at 130 DEG C ~ 150 DEG C dry 2 ~ 4 hours, triphenylphosphate at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by; (2), particle diameter is taken at the water-ground limestone of 0.1 μm ~ 20 μm and aluminium titanium composite coupler by mass percent proportioning, add in super mixer, stir 15 ~ 45 minutes at 100 DEG C ~ 120 DEG C temperature, make to disperse completely with coated after, be cooled to lower than 40 DEG C of dischargings, stand-by; (3), take step (1) by mass percent proportioning and obtain dry PBT and triphenylphosphate, add in super mixer, add the material that TPU, the E-MA-GMA, erucicamide, composite antioxidant, pentaerythritol stearate and the step (2) that take by mass percent proportioning obtain simultaneously, make to stir 3 ~ 15 minutes together, after fully mixing, discharging; (4), the compound that step (3) obtains is added twin screw extruder melt extrude, and after overcooling, granulation, drying, then be broken into fine powder by plastic crusher and sieve, choose 120 ~ 240 objects compositions, namely obtain the present invention.

Embodiment 2:

A kind of inorganic particle filled modified PBT powder, its component by mass percent proportioning is: PBT 70%, particle diameter 0.1 μm ~ 20 μm water-ground limestone 10%, TPU 6%, E-MA-GMA 2%, dihydroxyphenyl propane two idol-(diphenyl phosphate) 10%, aluminium titanium composite coupler 0.2%, erucicamide 0.5%, composite antioxidant 0.3%, pentaerythritol stearate 1%.Wherein, described composite antioxidant is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the mixture of phosphite ester kind antioxidant 168.

Its preparation method is: (1), by PBT at 130 DEG C ~ 150 DEG C dry 2 ~ 4 hours, dihydroxyphenyl propane two even-(diphenyl phosphate) at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by; (2), particle diameter is taken at the water-ground limestone of 0.1 μm ~ 20 μm and aluminium titanium composite coupler by mass percent proportioning, add in super mixer, stir 15 ~ 45 minutes at 100 DEG C ~ 120 DEG C temperature, make to disperse completely with coated after, be cooled to lower than 40 DEG C of dischargings, stand-by; (3), take step (1) by mass percent proportioning and obtain dry PBT and dihydroxyphenyl propane pair even-(diphenyl phosphate), add in super mixer, add the material that TPU, the E-MA-GMA, erucicamide, composite antioxidant, pentaerythritol stearate and the step (2) that take by mass percent proportioning obtain simultaneously, make to stir 3 ~ 15 minutes together, after fully mixing, discharging; (4), the compound that step (3) obtains is added twin screw extruder melt extrude, and after overcooling, granulation, drying, then be broken into fine powder by plastic crusher and sieve, choose 120 ~ 240 objects compositions, namely obtain the present invention.

Claims (5)

1. an inorganic particle filled modified PBT powder, it is characterized in that, its component by mass percent proportioning is: PBT 50% ~ 70%, inorganic particulate 5% ~ 15%, TPU 5% ~ 10%, E-MA-GMA 2% ~ 5%, fire retardant 8% ~ 15%, aluminium titanium composite coupler 0.1% ~ 0.5%, erucicamide 0.1% ~ 0.5%, composite antioxidant 0.1% ~ 0.5%, pentaerythritol stearate 0.1% ~ 1%.

2. inorganic particle filled modified PBT powder according to claim 1, is characterized in that, described inorganic particulate is particle diameter at the water-ground limestone of 0.1 μm ~ 20 μm.

3. inorganic particle filled modified PBT powder according to claim 1, it is characterized in that, described fire retardant be triphenylphosphate, the two idol-diphenyl phosphate of Resorcinol, bisphosphate diphenyl pentaerythritol, two idol-(diphenyl phosphate) of dihydroxyphenyl propane, red phosphor masterbatch one or more.

4. inorganic particle filled modified PBT powder according to claim 1, is characterized in that, described composite antioxidant is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the mixture of phosphite ester kind antioxidant 168.

5. the preparation method of inorganic particle filled modified PBT powder according to claim 1, is characterized in that, comprise the following steps:

(1), by PBT at 130 DEG C ~ 150 DEG C dry 2 ~ 4 hours, fire retardant at 60 DEG C ~ 80 DEG C dry 30 ~ 45 minutes, stand-by;

(2), by mass percent proportioning take inorganic particulate and aluminium titanium composite coupler, add in super mixer, stir 15 ~ 45 minutes at 100 DEG C ~ 120 DEG C temperature, make to disperse completely with coated after, be cooled to lower than 40 DEG C of dischargings, stand-by;

(3), take step (1) by mass percent proportioning and obtain dry PBT and fire retardant, add in super mixer, add the material that TPU, the E-MA-GMA, erucicamide, composite antioxidant, pentaerythritol stearate and the step (2) that take by mass percent proportioning obtain simultaneously, make to stir 3 ~ 15 minutes together, after fully mixing, discharging;

(4), the compound that step (3) obtains is added twin screw extruder melt extrude, and after overcooling, granulation, drying, then be broken into fine powder by plastic crusher and sieve, choose 120 ~ 240 objects compositions, namely obtain the present invention.