CN104861566A - Halogen-free flame retardation toughening enhanced PTT composite material and preparation method therefor - Google Patents

Abstract

The invention discloses a halogen-free flame retardation toughening enhanced PTT composite material and a preparation method therefor. The PTT composite material comprises the following ingredients, by weight, 60%-80% of PTT, 8%-15% of halogen-free flame retardants, 5%-10% of flexibilizers, 0.5%-2% of light stabilizing agents, 0.1%-0.5% of anti-oxidants, 0.1%-1% of lubricants and 8%-12% of glass fibers. The beneficial effects are that the PTT composite material has characteristics of high intensity, high flame retardation, high heat resistance, good impact resistance, small warping deformation, good dimension stability, excellent processability and the like, the flame retardation performances meet halogen free, low smoke, environmental protection and UL94V-0-level requirements, and relative usage needs can be met.

Description

A kind of halogen-free flame-proof toughening strengthens PTT matrix material and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of halogen-free flame-proof toughening strengthens PTT matrix material and preparation method thereof.

Background technology

Poly(Trimethylene Terephthalate) (PTT) is as a kind of new polyester macromolecular material of excellent combination property, the fields such as fiber, film, engineering plastics are widely used at present, but the defect that unmodified PTT exists, and notched Izod impact strength is low, notch sensitivity large, poor fire, thermotolerance are bad, easily aging, this greatly limits PTT and applies widely in every field.

Summary of the invention

A kind of halogen-free flame-proof toughening is the object of the present invention is to provide to strengthen PTT matrix material and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of halogen-free flame-proof toughening strengthens PTT matrix material, and its component by mass percent proportioning is: PTT 60% ~ 80%, halogen-free flame retardants 8% ~ 15%, toughner 5% ~ 10%, photostabilizer 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g.

Described halogen-free flame retardants is the compound mixed by polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt% three.

Described toughner is ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer.

Described photostabilizer is the compound of hindered amine as light stabilizer HS-944 and the HS-622 of mass ratio 1:1.

Described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

Described lubricant is one or more in calcium stearate, modification ethylene bis stearamide, pentaerythritol stearate.

Described glass fibre be surface through silane coupler modified process and mean length at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

Above-mentioned a kind of halogen-free flame-proof toughening strengthens the preparation method of PTT matrix material, comprises the following steps:

(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2) polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt%, is taken by weight ratio, make to mix, obtain described halogen-free flame retardants, then at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(3), taking dry PTT by weight ratio adds in high-speed mixer, add the toughner, photostabilizer, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained halogen-free flame retardants of step (2) by weight ratio, make to stir 3 ~ 5 minutes together, discharging after fully mixing;

(4), the compound of step (3) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 400r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of halogen-free flame-proof toughening of the present invention and strengthens PTT matrix material.

The invention has the beneficial effects as follows, the present invention has high strength, high flame retardant, high heat resistance and good shock resistance, and buckling deformation is little, the feature such as good stability of the dimension and excellent processability, and its flame retardant properties meets Halogen, low cigarette, environmental protection and UL94 V-0 class requirement completely, can meet the use needs of the parties concerned.

Embodiment

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

Embodiment 1:

A kind of halogen-free flame-proof toughening strengthens PTT matrix material, its component by mass percent proportioning is: PTT 63%, halogen-free flame retardants 15%, ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer 10%, photostabilizer 1.5%, oxidation inhibitor 0.2%, modification ethylene bis stearamide 0.3%, glass fibre 10%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, described halogen-free flame retardants is by polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, the compound that polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt% three mix, described photostabilizer is the compound of hindered amine as light stabilizer HS-944 and the HS-622 of mass ratio 1:1, described oxidation inhibitor is the Hinered phenols antioxidant 1010 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168, described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by; (2) polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt%, is taken by weight ratio, make to mix, obtain described halogen-free flame retardants, then at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by; (3), taking dry PTT by weight ratio adds in high-speed mixer, add the ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer, photostabilizer, oxidation inhibitor and the modification ethylene bis stearamide that take by weight ratio simultaneously, and add the obtained halogen-free flame retardants of step (2) by weight ratio, make to stir 3 ~ 5 minutes together, discharging after fully mixing; (4), the compound of step (3) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 400r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of halogen-free flame-proof toughening of the present invention and strengthens PTT matrix material.

Embodiment 2:

A kind of halogen-free flame-proof toughening strengthens PTT matrix material, its component by mass percent proportioning is: PTT 78%, halogen-free flame retardants 8%, ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer 5%, photostabilizer 0.5%, oxidation inhibitor 0.1%, modification ethylene bis stearamide 0.4%, glass fibre 8%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, described halogen-free flame retardants is by polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, the compound that polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt% three mix, described photostabilizer is the compound of hindered amine as light stabilizer HS-944 and the HS-622 of mass ratio 1:1, described oxidation inhibitor is the Hinered phenols antioxidant 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168, described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by; (2) polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt%, is taken by weight ratio, make to mix, obtain described halogen-free flame retardants, then at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by; (3), taking dry PTT by weight ratio adds in high-speed mixer, add the ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer, photostabilizer, oxidation inhibitor and the modification ethylene bis stearamide that take by weight ratio simultaneously, and add the obtained halogen-free flame retardants of step (2) by weight ratio, make to stir 3 ~ 5 minutes together, discharging after fully mixing; (4), the compound of step (3) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 400r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of halogen-free flame-proof toughening of the present invention and strengthens PTT matrix material.

Claims (8)

1. a halogen-free flame-proof toughening strengthens PTT matrix material, it is characterized in that, its component by mass percent proportioning is: PTT 60% ~ 80%, halogen-free flame retardants 8% ~ 15%, toughner 5% ~ 10%, photostabilizer 0.5% ~ 2%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%, glass fibre 8% ~ 12%.

2. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, it is characterized in that, described halogen-free flame retardants is the compound mixed by polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt% three.

3. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, and it is characterized in that, described toughner is ethylene-acrylate grafted methacrylic acid Racemic glycidol resin copolymer.

4. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, and it is characterized in that, described photostabilizer is the compound of hindered amine as light stabilizer HS-944 and the HS-622 of mass ratio 1:1.

5. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, and it is characterized in that, described oxidation inhibitor is the Hinered phenols antioxidant 1010 or 1076 of mass ratio 1:1 and the compound of phosphite ester kind antioxidant 168.

6. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, and it is characterized in that, described lubricant is one or more in calcium stearate, modification ethylene bis stearamide, pentaerythritol stearate.

7. a kind of halogen-free flame-proof toughening according to claim 1 strengthens PTT matrix material, it is characterized in that, described glass fibre be surface through silane coupler modified process and mean length at 50 ~ 200 μm, the alkali free glass fibre of mean diameter 5 ~ 25 μm and length-to-diameter ratio 10 ~ 30.

8. a kind of halogen-free flame-proof toughening according to claim 1 strengthens the preparation method of PTT matrix material, it is characterized in that, comprises the following steps:

(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, stand-by;

(2) polyphenylene phosphonic acids sulfobenzide ester fire retardant 30wt%, polydimethylsiloxane fire retardant 30wt% and nano-magnesium hydrate fire retardant 40wt%, is taken by weight ratio, make to mix, obtain described halogen-free flame retardants, then at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, stand-by;

(3), taking dry PTT by weight ratio adds in high-speed mixer, add the toughner, photostabilizer, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained halogen-free flame retardants of step (2) by weight ratio, make to stir 3 ~ 5 minutes together, discharging after fully mixing;

(4), the compound of step (3) is added the main spout of twin screw extruder, add from the side spout of twin screw extruder the glass fibre taken by weight ratio simultaneously, by twin screw extruder melting mixing 1 ~ 2 minute, screw speed controls at 150 ~ 400r/min, processing temperature is 200 DEG C ~ 280 DEG C scopes, then extruding pelletization, obtains a kind of halogen-free flame-proof toughening of the present invention and strengthens PTT matrix material.