CN104861515A - Toughening reinforced flame retardation modified composition based on PTT polyesters - Google Patents

Abstract

The invention discloses a toughening reinforced flame retardation modified composition based on PTT polyesters. The composition comprises the following ingredients, by weight, 60%-80% of PTT, 8%-12% of glass fibers, 5%-15% of flame retardants, 5%-10% of flexibilizers, 0.1%-0.5% of nucleating agents, 0.1%-0.5% of anti-oxidants and 0.1%-1% of lubricants. The compound flame retardants are a mixture composed of 32wt% of phosphorus-based flame retardant polysulfonyldiphenylene phenyl phosphonate, 32wt% of silicon-based flame retardant polydimethylsiloxane, 32wt% of inorganic flame retardant magnesium hydroxide and 4wt% of anti-droplet agent polytetrafluoroethylene after uniform mixing. The beneficial effects are that the composition has characteristics of high intensity, high flame retardation, high heat resistance and excellent impact resistance, small warping deformation, good dimension stability, excellent processability and the like, and the flame retardation performance can meet halogen free, smoke inhibition, environmental protection, droplet resistance and UL94V-0 level requirements completely.

Description

Based on the toughen and intensify flame-proof modified composition of PTT polyester

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of toughen and intensify flame-proof modified composition based on PTT polyester.

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, this greatly limits PTT and applies widely in every field.

Summary of the invention

The object of the present invention is to provide a kind of toughen and intensify flame-proof modified composition based on PTT polyester.

The technical solution adopted for the present invention to solve the technical problems is: based on the toughen and intensify flame-proof modified composition of PTT polyester, its component by mass percent proportioning is: PTT 60% ~ 80%, glass fibre 8% ~ 12%, fire retardant 5% ~ 15%, toughner 5% ~ 10%, nucleator 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

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

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

Described fire retardant is the compound mixed by phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%.

Described toughner is ethylene-methyl acrylate-glyceryl methacrylate (E-MA-GMA).

Described nucleator is the compound of the talcum powder of mass ratio 8:1:1, Sodium Benzoate and polyoxyethylene glycol.

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

Described lubricant is modification ethylene bis stearamide.

The preparation method of the above-mentioned toughen and intensify flame-proof modified composition based on PTT polyester, 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) phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%, is taken by weight ratio, make to mix, 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, nucleator, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained fire retardant of step (2) by weight ratio, make to stir 3 ~ 15 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 the toughen and intensify flame-proof modified composition based on PTT polyester of the present invention.

The invention has the beneficial effects as follows, the present invention has high strength, high flame retardant, high heat resistance and excellent impact resistance, and the feature such as buckling deformation is little, good stability of the dimension and excellent processability, and its flame retardant properties meets Halogen completely, presses down cigarette, environmental protection, resistance to molten drop and UL94 V-0 class requirement.

Embodiment

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

Embodiment 1:

A kind of toughen and intensify flame-proof modified composition based on PTT polyester, its component by mass percent proportioning is: PTT 67%, glass fibre 12%, fire retardant 10%, ethylene-methyl acrylate-glyceryl methacrylate (E-MA-GMA) 10%, nucleator 0.2%, antioxidant 1010 0.1%, modification ethylene bis stearamide 0.7%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, mean diameter is at 5 ~ 25 μm and the alkali free glass fibre of length-to-diameter ratio in 10 ~ 30 scopes, described fire retardant is by phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, the compound that inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt% mixes, described nucleator is the talcum powder of mass ratio 8:1:1, the compound of Sodium Benzoate and polyoxyethylene glycol.

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) phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%, is taken by weight ratio, make to mix, 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-methyl acrylate-glyceryl methacrylate (E-MA-GMA), nucleator, antioxidant 1010, the modification ethylene bis stearamide that take by weight ratio simultaneously, and add the obtained fire retardant of step (2) by weight ratio, make to stir 3 ~ 15 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 the toughen and intensify flame-proof modified composition based on PTT polyester of the present invention.

Embodiment 2:

Based on a toughen and intensify flame-proof modified composition for PTT polyester, its component by mass percent proportioning is: PTT 76%, glass fibre 10%, fire retardant 8%, ethylene-methyl acrylate-glyceryl methacrylate (E-MA-GMA) 5%, nucleator 0.1%, the compound 0.1% of antioxidant 1076 and irgasfos 168, modification ethylene bis stearamide 0.8%, described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g, and described glass fibre is that surface is through silane coupler modified process, and mean length is at 50 ~ 200 μm, mean diameter is at 5 ~ 25 μm and the alkali free glass fibre of length-to-diameter ratio in 10 ~ 30 scopes, and described fire retardant is by phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, the compound that inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt% mixes, described nucleator is the talcum powder of mass ratio 8:1:1, the compound of Sodium Benzoate and polyoxyethylene glycol.

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) phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%, is taken by weight ratio, make to mix, 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 compound, the modification ethylene bis stearamide of ethylene-methyl acrylate-glyceryl methacrylate (E-MA-GMA), nucleator, antioxidant 1076 and the irgasfos 168 taken by weight ratio simultaneously, and add the obtained fire retardant of step (2) by weight ratio, make to stir 3 ~ 15 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 the toughen and intensify flame-proof modified composition based on PTT polyester of the present invention.

Claims (6)

1. the toughen and intensify flame-proof modified composition based on PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 60% ~ 80%, glass fibre 8% ~ 12%, fire retardant 5% ~ 15%, toughner 5% ~ 10%, nucleator 0.1% ~ 0.5%, oxidation inhibitor 0.1% ~ 0.5%, lubricant 0.1% ~ 1%.

2. the toughen and intensify flame-proof modified composition based on PTT polyester according to claim 1, it is characterized in that, described glass fibre be surface through silane coupler modified process and mean length 50 ~ 200 μm, mean diameter is at 5 ~ 25 μm and the alkali free glass fibre of length-to-diameter ratio in 10 ~ 30 scopes.

3. the toughen and intensify flame-proof modified composition based on PTT polyester according to claim 1, it is characterized in that, described fire retardant is the compound mixed by phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%.

4. the toughen and intensify flame-proof modified composition based on PTT polyester according to claim 1, is characterized in that, described toughner is ethylene-methyl acrylate-glyceryl methacrylate.

5. the toughen and intensify flame-proof modified composition based on PTT polyester according to claim 1, is characterized in that, described nucleator is the compound of the talcum powder of mass ratio 8:1:1, Sodium Benzoate and polyoxyethylene glycol.

6. the preparation method of the toughen and intensify flame-proof modified composition based on PTT polyester according to claim 1, is characterized in that, comprise 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) phosphorus flame retardant polyphenylene phosphonic acids sulfobenzide ester 32wt%, silicon-series five-retardant polydimethylsiloxane 32wt%, inorganic combustion inhibitor magnesium hydroxide 32wt% and anti-dropping agent tetrafluoroethylene 4wt%, is taken by weight ratio, make to mix, 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, nucleator, oxidation inhibitor and the lubricant that take by weight ratio simultaneously, and add the obtained fire retardant of step (2) by weight ratio, make to stir 3 ~ 15 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 the toughen and intensify flame-proof modified composition based on PTT polyester of the present invention.