CN104419153A - Antistatic toughening and strengthening-grade polybutylece terephthalate (PBT) and polyethylene terephthalate (PET) alloy - Google Patents

Abstract

The invention discloses an antistatic toughening and strengthening-grade polybutylece terephthalate (PBT) and polyethylene terephthalate (PET) alloy which consists of the following components in percentage by mass: 20-60% of PBT resin, 10-40% of PET resin, 5-15% of antistatic master batches, 10-20% of a toughening agent, 10-20% of a strengthening agent, 0.5-2% of a coupling agent, 0.1-1% of a chain extender, 0.1-1% of an antioxidant, 0.1-1% of a dispersant and 0-1% of a nucleating agent. Compared with the prior art, the modified PBT and PET alloy, which is prepared by mixing the antistatic master batches, the toughening agent and the strengthening agent, disclosed by the invention has the beneficial effects that the prepared alloy system not only integrates properties of the PBT resin and the PET resin and realizes mutual complementation, but also has the advantages of being high in heat deflection temperature, high in strength, good in rigidity, good in creep resistance, fatigue resistance and mechanical property, low in shrinkage rate, good in antistatic property and the like; and the PBT and PET alloy can be widely applied to the fields of textile, electronics and electrical appliances, automobiles and the like.

Description

Antistatic toughen and intensify level PBT and PET alloy

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of antistatic toughen and intensify level PBT and PET alloy.

Background technology

Polybutylene terephthalate (PBT) is that 20 century 70s obtain a kind of model engineering plastic developed rapidly, its general mechanical property is all better than polyethylene terephthalate (PET), and there is good toughness, mouldable shaping, but its mobility, thermotolerance is all not as PET, and price is higher.Because PBT with PET chemical structure is similar, can learn from other's strong points to offset one's weaknesses both are blended, obtain the ideal PBT of over-all properties and PET alloy.But PBT and PET alloy use as engineering plastics, its shortcoming is that notched Izod impact strength is low, shrinking percentage is large, heat-drawn wire is low, static resistance is not enough, thus significantly limit its application.Therefore, it is necessary and meet development need for carrying out multifunction modification to PBT and PET alloy.

Summary of the invention

The object of the present invention is to provide a kind of antistatic toughen and intensify level PBT and PET alloy.

The technical solution adopted for the present invention to solve the technical problems is: antistatic toughen and intensify level PBT and PET alloy, and its component by mass percent proportioning is: PBT resin 20% ~ 60%, PET resin 10% ~ 40%, antistatic master granule 5% ~ 15%, toughner 10% ~ 20%, toughener 10% ~ 20%, coupling agent 0.5% ~ 2%, chainextender 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 1%, dispersion agent 0.1% ~ 1%, nucleator 0 ~ 1%.

Described PBT resin is polybutylene terephthalate.

Described PET resin is polyethylene terephthalate.

The antistatic master granule that described antistatic master granule is made up of pet resin (PET) 70wt%, ethoxylated alkyl acid amide 25wt% and calcium stearate 5wt%.

Described toughner is maleic anhydride graft macromolecular elastomer, the one in preferred POE-g-MAH, EPDM-g-MAH, SEBS-g-MAH, TPU-g-MAH.

Described toughener is the one in nano-calcium carbonate, gas phase nano silicon-dioxide, talcum powder, organo montmorillonite, nano kaoline.

Described coupling agent is the one in silane coupling agent, titanate coupling agent, aluminium titanium composite coupler.

Described chainextender is triphenyl phosphite.

Described oxidation inhibitor is the one in antioxidant 1010, antioxidant 1076, antioxidant 1076 and irgasfos 168 compound.

Described dispersion agent is TAS-2A dispersion agent.

Described nucleator is the one in sodium stearate, Sodium Benzoate, ethylene-acrylic acid sodium ion polymkeric substance, ethylene-methyl methacrylate sodium ion polymkeric substance.

Above-mentioned antistatic toughen and intensify level PBT and the preparation method of PET alloy, comprise the following steps:

(1), by PBT resin at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, toughener at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(2), antistatic master granule is prepared: take pet resin (PET), ethoxylated alkyl acid amide and calcium stearate by weight ratio, then add in high-speed mixer or ultrasonic generator and mix 3 ~ 15 minutes, again the material mixed is added twin screw extruder melt blending, cooling, pelletizing, dry rear obtained antistatic master granule, stand-by;

(3), dry toughener and coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 100 DEG C ~ 120 DEG C temperature, obtain the toughener of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by;

(4), dry PBT resin and PET resin is taken by weight ratio, add in high-speed mixer, mix 3 ~ 5 minutes, add the toughener that step (3) obtains surface modification again, add the antistatic master granule, toughner, chainextender, oxidation inhibitor, dispersion agent, the nucleator that take by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;

(5), add in twin screw extruder by the compound of step (4), at 230 DEG C ~ 260 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains antistatic toughen and intensify level PBT of the present invention and PET alloy.

The invention has the beneficial effects as follows, compared with prior art, the present invention adopts antistatic master granule, toughner, toughener blending and modifying PBT and PET alloy, the alloy system obtained is made not only to combine PBT resin and PET resin, learn from other's strong points to offset one's weaknesses, and there is the advantages such as heat-drawn wire is high, intensity is high, good rigidly, resistance to creep and antifatigue, good mechanical property, shrinking percentage is low, static resistance is good, the fields such as weaving, electronic apparatus, automobile can be widely used in.

Embodiment

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

Embodiment 1:

A kind of antistatic toughen and intensify level PBT and PET alloy, its component by mass percent proportioning is: PBT resin 36%, PET resin 20%, antistatic master granule 10%, POE-g-MAH15%, nano-calcium carbonate 15%, silane coupling agent 1%, triphenyl phosphite 0.5%, antioxidant 1010 1%, TAS-2A dispersion agent 1%, Sodium Benzoate 0.5%.The antistatic master granule that described antistatic master granule is made up of pet resin (PET) 70wt%, ethoxylated alkyl acid amide 25wt% and calcium stearate 5wt%.

Preparation method: (1), by PBT resin at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nano-calcium carbonate at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by; (2), antistatic master granule is prepared: take pet resin (PET), ethoxylated alkyl acid amide and calcium stearate by weight ratio, then add in high-speed mixer or ultrasonic generator and mix 3 ~ 15 minutes, again the material mixed is added twin screw extruder melt blending, cooling, pelletizing, dry rear obtained antistatic master granule, stand-by; (3), dry nano-calcium carbonate and silane coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 100 DEG C ~ 120 DEG C temperature, obtain the nano-calcium carbonate of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by; (4), dry PBT resin and PET resin is taken by weight ratio, add in high-speed mixer, mix 3 ~ 5 minutes, add the nano-calcium carbonate that step (3) obtains surface modification again, add the antistatic master granule, POE-g-MAH, triphenyl phosphite, antioxidant 1010, TAS-2A dispersion agent, the Sodium Benzoate that take by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging; (5), add in twin screw extruder by the compound of step (4), at 230 DEG C ~ 260 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains antistatic toughen and intensify level PBT of the present invention and PET alloy.

Embodiment 2:

A kind of antistatic toughen and intensify level PBT and PET alloy, its component by mass percent proportioning is: PBT resin 30%, PET resin 30%, antistatic master granule 6%, TPU-g-MAH 10%, nano kaoline 20%, aluminium titanium composite coupler 2%, triphenyl phosphite 0.7%, antioxidant 1076 and irgasfos 168 compound 0.5%, TAS-2A dispersion agent 0.8%.Wherein, the antistatic master granule that described antistatic master granule is made up of pet resin (PET) 70wt%, ethoxylated alkyl acid amide 25wt% and calcium stearate 5wt%.

Preparation method: (1), by PBT resin at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, nano kaoline at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by; (2), antistatic master granule is prepared: take pet resin (PET), ethoxylated alkyl acid amide and calcium stearate by weight ratio, then add in high-speed mixer or ultrasonic generator and mix 3 ~ 15 minutes, again the material mixed is added twin screw extruder melt blending, cooling, pelletizing, dry rear obtained antistatic master granule, stand-by; (3), dry nano kaoline and silane coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 100 DEG C ~ 120 DEG C temperature, obtain the nano kaoline of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by; (4), dry PBT resin and PET resin is taken by weight ratio, add in high-speed mixer, mix 3 ~ 5 minutes, add the nano kaoline that step (3) obtains surface modification again, add simultaneously take by weight ratio antistatic master granule, TPU-g-MAH, triphenyl phosphite, antioxidant 1076 and irgasfos 168 compound, TAS-2A dispersion agent, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging; (5), add in twin screw extruder by the compound of step (4), at 230 DEG C ~ 260 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains antistatic toughen and intensify level PBT of the present invention and PET alloy.

Claims (10)

1. an antistatic toughen and intensify level PBT and PET alloy, it is characterized in that, its component by mass percent proportioning is: PBT resin 20% ~ 60%, PET resin 10% ~ 40%, antistatic master granule 5% ~ 15%, toughner 10% ~ 20%, toughener 10% ~ 20%, coupling agent 0.5% ~ 2%, chainextender 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 1%, dispersion agent 0.1% ~ 1%, nucleator 0 ~ 1%.

2. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, it is characterized in that, the antistatic master granule that described antistatic master granule is made up of pet resin (PET) 70wt%, ethoxylated alkyl acid amide 25wt% and calcium stearate 5wt%.

3. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described toughner is maleic anhydride graft macromolecular elastomer, the one in preferred POE-g-MAH, EPDM-g-MAH, SEBS-g-MAH, TPU-g-MAH.

4. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described toughener is the one in nano-calcium carbonate, gas phase nano silicon-dioxide, talcum powder, organo montmorillonite, nano kaoline.

5. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described coupling agent is the one in silane coupling agent, titanate coupling agent, aluminium titanium composite coupler.

6. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described chainextender is triphenyl phosphite.

7. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described oxidation inhibitor is the one in antioxidant 1010, antioxidant 1076, antioxidant 1076 and irgasfos 168 compound.

8. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described dispersion agent is TAS-2A dispersion agent.

9. antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, described nucleator is the one in sodium stearate, Sodium Benzoate, ethylene-acrylic acid sodium ion polymkeric substance, ethylene-methyl methacrylate sodium ion polymkeric substance.

10. the preparation method of antistatic toughen and intensify level PBT according to claim 1 and PET alloy, is characterized in that, comprise the following steps:

(1), by PBT resin at 130 DEG C ~ 140 DEG C dry 3 ~ 5 hours, PET resin at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, toughener at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(2), antistatic master granule is prepared: take pet resin (PET), ethoxylated alkyl acid amide and calcium stearate by weight ratio, then add in high-speed mixer or ultrasonic generator and mix 3 ~ 15 minutes, again the material mixed is added twin screw extruder melt blending, cooling, pelletizing, dry rear obtained antistatic master granule, stand-by;

(3), dry toughener and coupling agent is taken by weight ratio, add sonic oscillation producer or rotating speed is not less than in the high-speed mixer of 3000 revs/min, stir 10 ~ 60 minutes at 100 DEG C ~ 120 DEG C temperature, obtain the toughener of surface modification, then be cooled to lower than 40 DEG C of dischargings, stand-by;

(4), dry PBT resin and PET resin is taken by weight ratio, add in high-speed mixer, mix 3 ~ 5 minutes, add the toughener that step (3) obtains surface modification again, add the antistatic master granule, toughner, chainextender, oxidation inhibitor, dispersion agent, the nucleator that take by weight ratio simultaneously, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;

(5), add in twin screw extruder by the compound of step (4), at 230 DEG C ~ 260 DEG C, through plastifying, mixing is extruded, cooling granulation, obtains antistatic toughen and intensify level PBT of the present invention and PET alloy.