CN103709639A - Permanent antistatic nanometer PBT composite material - Google Patents

Abstract

The invention discloses a permanent antistatic nanometer PBT composite material. The permanent antistatic nanometer PBT composite material comprises, by mass, 60-80% of PBT, 12-20% of a flame retardant, 5-15% of nanometer calcium carbonate, 0.1-0.3% of a surface conditioning agent, 3-5% of an antistatic agent, 0.1-1% of an antioxidant, 0.2-1.5% of a lubricant and 0-0.5% of a light stabilizer. Compared with PBT composite materials in the prior art, the PBT composite material prepared in the invention has the advantages of excellent notch impact toughness, high rigidity, very good heat resistance, excellent mechanical properties, permanent antistatic performance, surface resistivity reaching 10<7>-10<10>omega.m, high flame retardation efficiency, good processability and low cost. A preparation method of the permanent antistatic nanometer PBT composite material, provided by the invention, has the advantages of simplicity, convenient operation, easy control and easy industrialization.

Description

A kind of permanent anti-static nano level PBT matrix material

Technical field

The present invention relates to a kind of macromolecular material, specifically a kind of permanent anti-static nano level PBT matrix material.

Background technology

Polybutylene terephthalate (PBT) is a kind of thermoplastic engineering plastic, the industries such as electronic apparatus, household electrical appliances, automotive industry have been widely used in, but due to its low-temperature impact toughness is poor and room temperature under low, the shortcoming such as static resistance is not enough of large, the fire-retardant efficiency of notch sensitivity, thereby limit its application in some field as a kind of macromolecular structure material.

Summary of the invention

The object of this invention is to provide a kind of permanent anti-static nano level PBT matrix material with high impact, high flame retardant efficiency, good mechanical property and better processing characteristics.

The technical solution adopted for the present invention to solve the technical problems is: a kind of permanent anti-static nano level PBT matrix material, its component by mass percent proportioning is: PBT 60%～80%, fire retardant 12%～20%, nanometer grade calcium carbonate 5%～15%, surface treatment agent 0.1%～0.3%, static inhibitor 3%～5%, oxidation inhibitor 0.1%～1%, lubricant 0.2%～1.5%, photostabilizer 0～0.5%.

Described fire retardant is poly-2,6-dibromo phenylene ether, and relative molecular weight is 5500～6500.

The median size of described nanometer grade calcium carbonate is between 20nm～80nm.

Described surface treatment agent is a kind of in stearic acid, calcium stearate, sodium stearate, Magnesium Stearate and silane coupling agent.

Described static inhibitor is commercially available HBS-510 static inhibitor or HDC-102 static inhibitor.

Described oxidation inhibitor is a kind of in compound, antioxidant 1010 or the antioxidant 1076 of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168 and the compound of oxidation inhibitor JC-242.

Described lubricant is one or more the mixture in polysiloxane, EVA wax, TAS-2A, ethylene bis stearic amide.

Described photostabilizer is one or more the compound in benzotriazole light stabilizer, benzophoenone light stabiliziers, hindered amine as light stabilizer.

The preparation method of above-mentioned a kind of permanent anti-static nano level PBT matrix material, comprises the following steps:

(1) PBT is dried to 3～5 hours at 130 ℃～140 ℃, moisture control is below 0.03%, stand-by;

(2) fire retardant is dried to 30～45 minutes at 85 ℃～110 ℃, stand-by;

(3) after nanometer grade calcium carbonate and surface treatment agent are taken by weight ratio, add sonic oscillation producer or be not less than in the high-speed mixer of 3000 revs/min, at 100 ℃～200 ℃ temperature, stir 20～100 minutes, make dispersedly, be then cooled to lower than 40 ℃ and make expectation;

(4) take by weight ratio PBT, fire retardant, static inhibitor, oxidation inhibitor, lubricant and the photostabilizer after drying treatment, add high-speed mixer, and fully mix 3～5 minutes with together with the expectation of step (3);

(5) mixture of step (4) is dropped in twin screw extruder again, control screw speed at 150～500 revs/min, barrel zone temperature, at 205 ℃～240 ℃, through twin screw extruder extruding pelletization, obtains a kind of permanent anti-static nano level PBT matrix material.

The invention has the beneficial effects as follows, compared with prior art, the prepared PBT matrix material of the present invention not only has good notch impact toughness, higher rigidity and good resistance toheat, also has excellent mechanical property and permanent antistatic performance, and its surface resistivity can reach 10 ⁷～10 ¹⁰Ω m, and flame-retarded efficiency is high, good processability, cost is low.Preparation method provided by the invention is simple and easy to operate, is easy to realize industrialization.

Embodiment

Below in conjunction with specific embodiment, further illustrate technical scheme of the present invention.

Embodiment 1:

A kind of permanent anti-static nano level PBT matrix material, its component by mass percent proportioning is: PBT 70%, poly-2, the compound 0.2% of 6-dibromo phenylene ether 15%, nanometer grade calcium carbonate 10%, stearic acid 0.2%, HBS-510 static inhibitor 4%, antioxidant 1076 and irgasfos 168, polysiloxane 0.4%, benzotriazole light stabilizer 0.2%, wherein, the median size of nanometer grade calcium carbonate is between 20nm～80nm.

Preparation method: (1) is dried 3～5 hours by PBT at 130 ℃～140 ℃, and moisture control is below 0.03%, stand-by; (2) will gather 2,6-dibromo phenylene ether and be dried 30～45 minutes at 85 ℃～110 ℃, stand-by; (3) after nanometer grade calcium carbonate and stearic acid are taken by weight ratio, add sonic oscillation producer or be not less than in the high-speed mixer of 3000 revs/min, at 100 ℃～200 ℃ temperature, stir 20～100 minutes, make dispersedly, be then cooled to lower than 40 ℃ and make expectation; (4) take by weight ratio the PBT, poly-2 after drying treatment, compound, polysiloxane and the benzotriazole light stabilizer of 6-dibromo phenylene ether, HBS-510 static inhibitor, antioxidant 1076 and irgasfos 168, add high-speed mixer, and fully mix 3～5 minutes with together with the expectation of step (3); (5) mixture of step (4) is dropped in twin screw extruder again, control screw speed at 150～500 revs/min, barrel zone temperature, at 205 ℃～240 ℃, through twin screw extruder extruding pelletization, obtains a kind of permanent anti-static nano level PBT matrix material.

Embodiment 2:

A kind of permanent anti-static nano level PBT matrix material, its component by mass percent proportioning is: PBT 60%, poly-2, the compound 0.5% of 6-dibromo phenylene ether 20%, nanometer grade calcium carbonate 15%, calcium stearate 0.3%, HBS-510 static inhibitor 3%, antioxidant 1010 and irgasfos 168, EVA wax 1%, benzophoenone light stabiliziers 0.2%, wherein, the median size of nanometer grade calcium carbonate is between 20nm～80nm.

Preparation method: (1) is dried 3～5 hours by PBT at 130 ℃～140 ℃, and moisture control is below 0.03%, stand-by; (2) will gather 2,6-dibromo phenylene ether and be dried 30～45 minutes at 85 ℃～110 ℃, stand-by; (3) after nanometer grade calcium carbonate and calcium stearate are taken by weight ratio, add sonic oscillation producer or be not less than in the high-speed mixer of 3000 revs/min, at 100 ℃～200 ℃ temperature, stir 20～100 minutes, make dispersedly, be then cooled to lower than 40 ℃ and make expectation; (4) take by weight ratio the PBT, poly-2 after drying treatment, the compound of 6-dibromo phenylene ether, HBS-510 static inhibitor, antioxidant 1010 and irgasfos 168, EVA wax and benzophoenone light stabiliziers, add high-speed mixer, and fully mix 3～5 minutes with together with the expectation of step (3); (5) mixture of step (4) is dropped in twin screw extruder again, control screw speed at 150～500 revs/min, barrel zone temperature, at 205 ℃～240 ℃, through twin screw extruder extruding pelletization, obtains a kind of permanent anti-static nano level PBT matrix material.

Embodiment 3:

A kind of permanent anti-static nano level PBT matrix material, its component by mass percent proportioning is: PBT 76%, poly-2, the compound 0.6% of 6-dibromo phenylene ether 12%, nanometer grade calcium carbonate 5%, silane coupling agent 0.1%, HDC-102 static inhibitor 5%, antioxidant 1076 and oxidation inhibitor JC-242, ethylene bis stearic amide 1%, hindered amine as light stabilizer 0.3%, wherein, the median size of nanometer grade calcium carbonate is between 20nm～80nm.

Preparation method: (1) is dried 3～5 hours by PBT at 130 ℃～140 ℃, and moisture control is below 0.03%, stand-by; (2) will gather 2,6-dibromo phenylene ether and be dried 30～45 minutes at 85 ℃～110 ℃, stand-by; (3) after nanometer grade calcium carbonate and silane coupling agent are taken by weight ratio, add sonic oscillation producer or be not less than in the high-speed mixer of 3000 revs/min, at 100 ℃～200 ℃ temperature, stir 20～100 minutes, make dispersedly, be then cooled to lower than 40 ℃ and make expectation; (4) take by weight ratio the PBT, poly-2 after drying treatment, compound, ethylene bis stearic amide and the hindered amine as light stabilizer of 6-dibromo phenylene ether, HDC-102 static inhibitor, antioxidant 1076 and oxidation inhibitor JC-242, add high-speed mixer, and fully mix 3～5 minutes with together with the expectation of step (3); (5) mixture of step (4) is dropped in twin screw extruder again, control screw speed at 150～500 revs/min, barrel zone temperature, at 205 ℃～240 ℃, through twin screw extruder extruding pelletization, obtains a kind of permanent anti-static nano level PBT matrix material.

Claims (9)

1. a permanent anti-static nano level PBT matrix material, it is characterized in that, its component by mass percent proportioning is: PBT 60%～80%, fire retardant 12%～20%, nanometer grade calcium carbonate 5%～15%, surface treatment agent 0.1%～0.3%, static inhibitor 3%～5%, oxidation inhibitor 0.1%～1%, lubricant 0.2%～1.5%, photostabilizer 0～0.5%.

2. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, described fire retardant is poly-2,6-dibromo phenylene ether, and relative molecular weight is 5500～6500.

3. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, the median size of described nanometer grade calcium carbonate is between 20nm～80nm.

4. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, described surface treatment agent is a kind of in stearic acid, calcium stearate, sodium stearate, Magnesium Stearate and silane coupling agent.

5. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, described static inhibitor is commercially available HBS-510 static inhibitor or HDC-102 static inhibitor.

6. a kind of permanent anti-static nano level PBT matrix material according to claim 1, it is characterized in that, described oxidation inhibitor is a kind of in compound, antioxidant 1010 or the antioxidant 1076 of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168 and the compound of oxidation inhibitor JC-242.

7. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, described lubricant is one or more the mixture in polysiloxane, EVA wax, TAS-2A, ethylene bis stearic amide.

8. a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, described photostabilizer is one or more the compound in benzotriazole light stabilizer, benzophoenone light stabiliziers, hindered amine as light stabilizer.

9. the preparation method of a kind of permanent anti-static nano level PBT matrix material according to claim 1, is characterized in that, comprises the following steps:

(1) PBT is dried to 3～5 hours at 130 ℃～140 ℃, moisture control is below 0.03%, stand-by;

(2) fire retardant is dried to 30～45 minutes at 85 ℃～110 ℃, stand-by;

(3) after nanometer grade calcium carbonate and surface treatment agent are taken by weight ratio, add sonic oscillation producer or be not less than in the high-speed mixer of 3000 revs/min, at 100 ℃～200 ℃ temperature, stir 20～100 minutes, make dispersedly, be then cooled to lower than 40 ℃ and make expectation;

(4) take by weight ratio PBT, fire retardant, static inhibitor, oxidation inhibitor, lubricant and the photostabilizer after drying treatment, add high-speed mixer, and fully mix 3～5 minutes with together with the expectation of step (3);

(5) mixture of step (4) is dropped in twin screw extruder again, control screw speed at 150～500 revs/min, barrel zone temperature, at 205 ℃～240 ℃, through twin screw extruder extruding pelletization, obtains a kind of permanent anti-static nano level PBT matrix material.