CN104341747A - Novel PET composite material and its preparation method - Google Patents

Abstract

The inveniton discloses a novel PET composite material and its preparation method. The novel PET composite material comprises, by mass, 50-80% of PET, 5-15% of inorganic particles, 0.5-2% of diisocyanate, 1-4% of polycarbonate diol, 10-20% of a flame retardant, 3-8% of a compatibilizer, 0.5-2% of a nucleating agent, 0.1-2% of a dispersant and 0.1-1% of an antioxidant. Diisocyanate and polycarbonate diol are stirred in a mixer, and undergo addition polymerization to form a polyurethane rubber elastomer, the surfaces of the inorganic particles are coated with the polyurethane rubber elastomer to form a core-shell structure with the inorganic particles as the core and the elastomer as the shell, and the core-shell structure has good synergetic reinforcing and toughening effects on the PET, so compared with materials in the prior art, the composite material disclosed in the invention has the advantages of good processability and low cost; and the flame retardation modification of PET has the characteristics of good effect, good thermal stability, permanent flame retardation, no decomposition or dialysis phenomena, and the like.

Description

A kind of Novel PET matrix material and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of Novel PET matrix material and preparation method thereof.

Background technology

Polyethylene terephthalate (PET) has the features such as intensity is high, wear resistance good, rebound resilience is good, cost is low, in textiles, therefore occupy sizable proportion, and PET is again the broad-spectrum engineering plastics of excellent property simultaneously.But the mechanical property of pure PET material, thermotolerance and impact property are poor, and crystallization rate is slow, and forming process difficulty, flame retardant resistance is poor.Therefore, PET usually need by toughness reinforcing, strengthen, fire-retardant and crystallization is facilitated etc., and method improves its processibility and physical property etc.

Summary of the invention

The object of the present invention is to provide and a kind of there is elastomer coated inorganic particle toughening and flame-retardant modified Novel PET matrix material and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of Novel PET matrix material, and its component by mass percent proportioning is: PET 50% ~ 80%, inorganic particulate 5% ~ 15%, vulcabond 0.5% ~ 2%, PCDL 1% ~ 4%, fire retardant 10% ~ 20%, expanding material 3% ~ 8%, nucleator 0.5% ~ 2%, dispersion agent 0.1% ~ 2%, oxidation inhibitor 0.1% ~ 1%.

Described inorganic particulate is particle diameter calcium carbonate, talcum powder, zinc sulfide white, barium sulfate, the one in kaolin and diatomite of 0.01 μm ~ 5 μm.

Described fire retardant is that heat decomposition temperature is greater than decabromodiphynly oxide fire retardant (DBDPO), tetrabromo-bisphenol double hydroxyethyl ether fire retardant (TBA-EO), the polyphenylene phosphonic acids sulfobenzide ester oligomer fire retardant of 300 DEG C, gathers the one in sulfobenzide phenyl phosphate ester fire retardant, 3-phenyl-phosphonic acid third carboxylic acid fire retardant, alkyl-carboxylic acid phosphonic acids fire retardant, 2-carboxyethylphenylphacidinic acidinic flame-proof agent.

Described expanding material is maleic anhydride graft SIS/SEBS (SEBS-g-MAH).

Described nucleator is ethylene-methyl methacrylate sodium ion polymkeric substance.

Described dispersion agent is the one in pentaerythritol stearate, TAS-2A dispersion agent, ethylene bis stearic amide (EBS).

Described oxidation inhibitor is the compound of hindered phenol antioxygen 1010 and phosphite ester kind antioxidant 168.

The preparation method of above-mentioned a kind of Novel PET matrix material, comprises the following steps:

(1) by PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, fire retardant at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, inorganic particulate at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by;

(2) taking dried inorganic particulate by weight ratio, to add barrel temperature be in 40 DEG C ~ 80 DEG C mixing machines, then take PCDL and to add in mixing machine stirring at low speed 0.5 ~ 15 minute, add vulcabond high-speed stirring again 10 ~ 60 minutes, make abundant addition polymerization and coated;

(3) then add the PET after taking drying treatment by weight ratio, fire retardant and expanding material, nucleator, dispersion agent and oxidation inhibitor, and stir 5 ~ 60 minutes in mixing machine high speed, discharging;

(4) more above-mentioned compound is added in twin screw extruder, control screw speed at 150 ~ 600 revs/min, barrel zone temperature, at 270 DEG C ~ 290 DEG C, namely obtains a kind of Novel PET matrix material of the present invention by the extruded material of twin screw extruder after cooling, air-dry, pelletizing, drying.

The invention has the beneficial effects as follows, compared with prior art, the present invention adopts vulcabond and PCDL to stir in mixing machine and addition polymerization generates urethanes elastomerics and coated at surface of inorganic particles, the nucleocapsid structure that formation is core with inorganic particulate, elastomerics is shell, make to play good collaborative activeness and quietness effect to PET, and good processability, cost is low; The fire retardant simultaneously 300 DEG C being greater than to PET flame-retardant modified employing heat decomposition temperature have effective, thermostability is good and fire-retardant permanent in decomposing and the characteristic such as osmotic phenomena.

Embodiment

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

Embodiment 1:

A kind of Novel PET matrix material, its component by mass percent proportioning is: PET 60%, particle diameter calcium carbonate 10%, vulcabond 1.5%, PCDL 3%, the heat decomposition temperature of 0.01 μm ~ 5 μm be greater than 300 DEG C decabromodiphynly oxide fire retardant (DBDPO) 18%, maleic anhydride graft SIS/SEBS (SEBS-g-MAH) 5%, ethylene-methyl methacrylate sodium ion polymkeric substance 1%, pentaerythritol stearate 1%, hindered phenol antioxygen 1010 and phosphite ester kind antioxidant 168 compound 0.5%.

Preparation method: (1) was by PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, decabromodiphynly oxide fire retardant (DBDPO) at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, particle diameter was in the calcium carbonate of 0.01 μm ~ 5 μm at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by; (2) taking dried calcium carbonate by weight ratio, to add barrel temperature be in 40 DEG C ~ 80 DEG C mixing machines, then take PCDL and to add in mixing machine stirring at low speed 0.5 ~ 15 minute, add vulcabond high-speed stirring again 10 ~ 60 minutes, make abundant addition polymerization and coated; (3) compound of the PET after taking drying treatment by weight ratio, decabromodiphynly oxide fire retardant (DBDPO) and maleic anhydride graft SIS/SEBS (SEBS-g-MAH), ethylene-methyl methacrylate sodium ion polymkeric substance, pentaerythritol stearate and hindered phenol antioxygen 1010 and phosphite ester kind antioxidant 168 is then added, and stir 5 ~ 60 minutes in mixing machine high speed, discharging; (4) more above-mentioned compound is added in twin screw extruder, control screw speed at 150 ~ 600 revs/min, barrel zone temperature, at 270 DEG C ~ 290 DEG C, namely obtains a kind of Novel PET matrix material of the present invention by the extruded material of twin screw extruder after cooling, air-dry, pelletizing, drying.

Embodiment 2:

A kind of Novel PET matrix material, its component by mass percent proportioning is: PET 58%, particle diameter talcum powder 15%, vulcabond 2%, PCDL 4%, the heat decomposition temperature of 0.01 μm ~ 5 μm be greater than 300 DEG C polyphenylene phosphonic acids sulfobenzide ester oligomer fire retardant 12%, maleic anhydride graft SIS/SEBS (SEBS-g-MAH) 6%, ethylene-methyl methacrylate sodium ion polymkeric substance 1.5%, TAS-2A dispersion agent 1%, hindered phenol antioxygen 1010 and phosphite ester kind antioxidant 168 compound 0.5%.

Preparation method: (1) was by PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, polyphenylene phosphonic acids sulfobenzide ester oligomer fire retardant at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, particle diameter was the talcum powder of 0.01 μm ~ 5 μm at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by; (2) taking dried talcum powder by weight ratio, to add barrel temperature be in 40 DEG C ~ 80 DEG C mixing machines, then take PCDL and to add in mixing machine stirring at low speed 0.5 ~ 15 minute, add vulcabond high-speed stirring again 10 ~ 60 minutes, make abundant addition polymerization and coated; (3) compound of the PET after taking drying treatment by weight ratio, polyphenylene phosphonic acids sulfobenzide ester oligomer fire retardant and maleic anhydride graft SIS/SEBS (SEBS-g-MAH), ethylene-methyl methacrylate sodium ion polymkeric substance, TAS-2A dispersion agent and hindered phenol antioxygen 1010 and phosphite ester kind antioxidant 168 is then added, and stir 5 ~ 60 minutes in mixing machine high speed, discharging; (4) more above-mentioned compound is added in twin screw extruder, control screw speed at 150 ~ 600 revs/min, barrel zone temperature, at 270 DEG C ~ 290 DEG C, namely obtains a kind of Novel PET matrix material of the present invention by the extruded material of twin screw extruder after cooling, air-dry, pelletizing, drying.

Claims (6)

1. a Novel PET matrix material, it is characterized in that, its component by mass percent proportioning is: PET 50% ~ 80%, inorganic particulate 5% ~ 15%, vulcabond 0.5% ~ 2%, PCDL 1% ~ 4%, fire retardant 10% ~ 20%, expanding material 3% ~ 8%, nucleator 0.5% ~ 2%, dispersion agent 0.1% ~ 2%, oxidation inhibitor 0.1% ~ 1%.

2. a kind of Novel PET matrix material according to claim 1, is characterized in that, described inorganic particulate is particle diameter calcium carbonate, talcum powder, zinc sulfide white, barium sulfate, the one in kaolin and diatomite of 0.01 μm ~ 5 μm.

3. a kind of Novel PET matrix material according to claim 1, it is characterized in that, described fire retardant is that heat decomposition temperature is greater than decabromodiphynly oxide fire retardant (DBDPO), tetrabromo-bisphenol double hydroxyethyl ether fire retardant (TBA-EO), the polyphenylene phosphonic acids sulfobenzide ester oligomer fire retardant of 300 DEG C, gathers the one in sulfobenzide phenyl phosphate ester fire retardant, 3-phenyl-phosphonic acid third carboxylic acid fire retardant, alkyl-carboxylic acid phosphonic acids fire retardant, 2-carboxyethylphenylphacidinic acidinic flame-proof agent.

4. a kind of Novel PET matrix material according to claim 1, is characterized in that, described expanding material is maleic anhydride graft SIS/SEBS (SEBS-g-MAH).

5. a kind of Novel PET matrix material according to claim 1, is characterized in that, described nucleator is ethylene-methyl methacrylate sodium ion polymkeric substance.

6. the preparation method of a kind of Novel PET matrix material according to claim 1, is characterized in that, comprise the following steps:

(1) by PET at 130 DEG C ~ 150 DEG C dry 3 ~ 4 hours, fire retardant at 80 DEG C ~ 85 DEG C dry 30 ~ 45 minutes, inorganic particulate at 60 DEG C ~ 120 DEG C dry 1 ~ 2 hour, stand-by;

(2) taking dried inorganic particulate by weight ratio, to add barrel temperature be in 40 DEG C ~ 80 DEG C mixing machines, then take PCDL and to add in mixing machine stirring at low speed 0.5 ~ 15 minute, add vulcabond high-speed stirring again 10 ~ 60 minutes, make abundant addition polymerization and coated;

(3) then add the PET after taking drying treatment by weight ratio, fire retardant and expanding material, nucleator, dispersion agent and oxidation inhibitor, and stir 5 ~ 60 minutes in mixing machine high speed, discharging;

(4) more above-mentioned compound is added in twin screw extruder, control screw speed at 150 ~ 600 revs/min, barrel zone temperature, at 270 DEG C ~ 290 DEG C, namely obtains a kind of Novel PET matrix material of the present invention by the extruded material of twin screw extruder after cooling, air-dry, pelletizing, drying.