CN104962063A - Halogen-free flame-retardant PC (polycarbonate) modified plastic and preparation method thereof - Google Patents
Halogen-free flame-retardant PC (polycarbonate) modified plastic and preparation method thereof Download PDFInfo
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- CN104962063A CN104962063A CN201510455393.XA CN201510455393A CN104962063A CN 104962063 A CN104962063 A CN 104962063A CN 201510455393 A CN201510455393 A CN 201510455393A CN 104962063 A CN104962063 A CN 104962063A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a halogen-free flame-retardant PC (polycarbonate) modified plastic and a preparation method thereof. The halogen-free flame-retardant PC modified plastic comprises the following raw materials in parts by weight: 50-90 parts of PC, 10-20 parts of nano magnesium carbonate, 15-30 parts of phosphorus-nitrogen composite flame retardant, 0.5-3 parts of anti-dripping agent, 0.1-0.5 part of antioxidant, 0.1-0.5 part of lubricant, 0.1-0.5 part of dispersing agent and 0.1-0.8 part of compatilizer. The nano magnesium carbonate and phosphorus-nitrogen composite flame retardant are added as flame retardants to implement the flame retardancy of the halogen-free flame-retardant PC modified plastic; and the combination of the nano magnesium carbonate and phosphorus-nitrogen composite flame retardant can reduce the total consumption of the flame retardants. The halogen-free flame-retardant PC modified plastic has the advantages of environment friendliness and favorable flame retardancy.
Description
Technical field
The present invention relates to modified plastics technical field, particularly relate to a kind of halogen-free flame retardant PC modified plastics and preparation method thereof.
Background technology
Polycarbonate (PC) is a kind of thermoplastic engineering plastic of excellent combination property, has outstanding shock resistance, excellent mechanical property and flame retardant resistance.In UL94 standard, flame retardant rating is increased progressively to V-0 step by step by HB, V-2, V-1; Wherein the testing standard of V-2 grade is: after carrying out twice combustion testings of 10 seconds to sample, flame extinguished in 60 seconds; Combustionmaterial can be had to fall down.The testing standard of V-1 is: after carrying out twice combustion testings of 10 seconds to sample, flame extinguished in 60 seconds; Combustionmaterial can not be had to fall down.The testing standard of V-0 is: after carrying out twice combustion testings of 10 seconds to sample, flame extinguished in 30 seconds; Combustionmaterial can not be had to fall down.The flame retardant rating of PC is UL94-V-2, and flame retardant properties has much room for improvement, and has hot melts to drip during burning, easily causes neighbouring material to catch fire, is difficult to meet fire-retardant fireproof requirement.Therefore, fire-retardant finish to be carried out to PC in actual applications.But poisonous hydrogen halide and a large amount of smog during halogen containing flame-retardant material combustion, can be released, even produce some carcinogenic substances, have a strong impact on the safety of people's lives and properties.So, along with society to the environmental requirement of material and Application Areas to the particular requirement of material, PC flame retardant of plastic performance and the feature of environmental protection thereof, receive the concern of people day by day, PC flame retardant of plastic poor performance in prior art.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of halogen-free flame retardant PC modified plastics, and this halogen-free flame retardant PC modified plastics environmental protection, flame retardant properties are good.
For reaching this object, the present invention by the following technical solutions:
A kind of halogen-free flame retardant PC modified plastics, comprises following raw material by weight:
PC is 50-90 part, such as 50 parts, 60 parts, 70 parts, 80 parts, 90 parts;
Nano level magnesiumcarbonate is 10-20 part, such as 10 parts, 15 parts, 20 parts;
Phosphor nitrogen composite combustion inhibitor is 15-30 part, such as 15 parts, 20 parts, 25 parts, 30 parts;
Anti-dripping agent is 0.5-3 part, such as 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts;
Oxidation inhibitor is 0.1-0.5 part, such as 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part;
Lubricant is 0.1-0.5, such as 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part part;
Dispersion agent is 0.1-0.5, such as 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part part;
Compatilizer is 0.1-0.8, such as 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part part.
Preferably, halogen-free flame retardant PC modified plastics comprises following raw material by weight:
PC is 60-80 part, such as 60 parts, 65 parts, 70 parts, 75 parts, 80 parts;
Nano level magnesiumcarbonate is 12-18 part, such as 12 parts, 13 parts, 15 parts, 16 parts, 18 parts;
Phosphor nitrogen composite combustion inhibitor is 20-25 part, such as 20 parts, 21 parts, 22 parts, 23 parts, 25 parts;
Anti-dripping agent is 1-2 part, such as 1 part, 1.3 parts, 1.5 parts, 1.7 parts, 1.9 parts, 2 parts;
Oxidation inhibitor is 0.2-0.4 part, such as 0.2 part, 0.25 part, 0.3 part, 0.35 part, 0.4 part;
Lubricant is 0.2-0.3 part, such as 0.2 part, 0.25 part, 0.3 part;
Dispersion agent is 0.3-0.4, such as 0.3 part, 0.32 part, 0.35 part, 0.38 part, 0.39 part;
Compatilizer is 0.4-0.6 part, such as 0.4 part, 0.45 part, 0.5 part, 0.55 part, 0.6 part.
Wherein, the feature of magnesiumcarbonate fire retardant is, except having the larger feature of unit mass caloric receptivity, what its discharged is the carbon dioxide with fire extinguishing function.Use magnesiumcarbonate to make fire retardant, carry a carbon dioxide extinguisher as polymer matrix material, the carbonic acid gas discharged defines one " carbonic acid gas air film " in burning base material surrounding, has isolated combustion air.And nano level magnesiumcarbonate particulate is little, compare common magnesiumcarbonate when identical proportion, its distribution in the plastic wants uniform many, so its fire resistance can be significantly improved, under identical distribution situation, the consumption of nano level magnesiumcarbonate is also few than the consumption of common magnesiumcarbonate, nano level magnesiumcarbonate is joined fire-proof flame-retarded agent little to the mechanical impact of engineering plastics, and the nano level magnesiumcarbonate added can also improve rigidity and the thermotolerance of plastics.The preparation process of nano level magnesiumcarbonate is as follows: be placed in surface processing device by magnesiumcarbonate powder, add coupling agent and thinner to carry out temperature control, stir surface modification treatment, nano level anhydrous magnesium carbonate is sieved out finally by pulverizer-airflow shifting machine, wherein coupling agent and thinner are this area conventional reagent, do not repeat them here.Preferably, the median size of the nano level magnesiumcarbonate that the present invention is used is 10nm-100nm.
Wherein, described anti-dripping agent is tetrafluoroethylene class anti-dripping agent.
Wherein, described oxidation inhibitor is antioxidant 1010 and/or oxidation inhibitor 163.
Wherein, described lubricant is Zinic stearas and/or barium stearate.
Wherein, described dispersion agent is white oil.
Wherein, described compatilizer is acrylic ester modifier.
Two of object of the present invention is the preparation method providing a kind of halogen-free flame retardant PC modified plastics, comprises the following steps:
(1) by weight, take 50-90 part PC, 10-20 part nano level magnesiumcarbonate, 15-30 part phosphor nitrogen composite combustion inhibitor, 0.5-3 part anti-dripping agent, 0.1-0.5 part oxidation inhibitor, 0.1-0.5 part lubricant, 0.1-0.5 part dispersion agent, 0.1-0.8 part compatilizer add in stirrer and be uniformly mixed obtained mixture;
(2) mixture that step (1) is obtained is added twin screw extruder, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
Wherein, in step (2), the extrusion temperature of described twin screw extruder is 180-200 DEG C.
Compared with prior art, beneficial effect of the present invention is: a kind of halogen-free flame retardant PC modified plastics by weight, comprises following raw material: 50-90 part PC, 10-20 part nano level magnesiumcarbonate, 15-30 part phosphor nitrogen composite combustion inhibitor, 0.5-3 part anti-dripping agent, 0.1-0.5 part oxidation inhibitor, 0.1-0.5 part lubricant, 0.1-0.5 part dispersion agent, 0.1-0.8 part compatilizer; The flame retardant properties of halogen-free flame retardant PC modified plastics is realized as fire retardant by interpolation nano level magnesiumcarbonate and phosphor nitrogen composite combustion inhibitor, nano level magnesiumcarbonate particulate is little, being evenly distributed in the plastic, the fire resistance of plastics is significantly improved, and nano level magnesiumcarbonate is combined with phosphor nitrogen composite combustion inhibitor, total consumption of fire retardant can be reduced, and ensure flame retardant of plastic excellent property, and produce without obnoxious flavour during the burning of halogen-free flame retardant PC modified plastics, environment friendly is good.
In addition, adding the mechanical impact of PC plastics of nano level magnesiumcarbonate is little, and the nano level magnesiumcarbonate added can also improve rigidity and the thermotolerance of plastics.Preparation method of the present invention is simple, may be used for the parts preparing the industry such as electrical equipment, telecommunication.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.
As no specific instructions, various raw material of the present invention all can commercially availablely be buied, or prepares according to the ordinary method of this area.
Embodiment 1
By weight, take 60 parts of PC, 20 parts of median sizes are the nano level magnesiumcarbonate of 50nm, 20 parts of phosphor nitrogen composite combustion inhibitors, 3 parts of tetrafluoroethylene anti-dripping agents, 0.5 part of antioxidant 1010,0.2 part of Zinic stearas, 0.3 part of white oil, 0.8 part of acrylic ester modifier add in stirrer and be uniformly mixed obtained mixture, its medium speed is 400r/min, stirs 10min; Obtained mixture is added twin screw extruder, and wherein, the extrusion temperature controlling twin screw extruder is 180 DEG C, and screw speed is 250rpm, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
Embodiment 2
By weight, take 55 parts of PC, 15 parts of median sizes are the nano level magnesiumcarbonate of 20nm, 20 parts of phosphor nitrogen composite combustion inhibitors, 2 parts of tetrafluoroethylene anti-dripping agents, 0.4 part of antioxidant 1010,0.3 part of barium stearate, 0.5 part of white oil, 0.6 part of acrylic ester modifier add in stirrer and be uniformly mixed obtained mixture, its medium speed is 400r/min, stirs 15min; Obtained mixture is added twin screw extruder, and wherein, the extrusion temperature controlling twin screw extruder is 190 DEG C, and screw speed is 300rpm, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
Embodiment 3
By weight, take 70 parts of PC, 20 parts of median sizes are the nano level magnesiumcarbonate of 60nm, 25 parts of phosphor nitrogen composite combustion inhibitors, 1 part of tetrafluoroethylene anti-dripping agent, 0.3 part of oxidation inhibitor, 163,0.2 part of barium stearate, 0.3 part of white oil, 0.5 part of acrylic ester modifier add in stirrer and be uniformly mixed obtained mixture, its medium speed is 300-500r/min, stirs 10min; Obtained mixture is added twin screw extruder, and wherein, the extrusion temperature controlling twin screw extruder is 200 DEG C, and screw speed is 290rpm, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
Embodiment 4
By weight, take 90 parts of PC, 20 parts of median sizes are the nano level magnesiumcarbonate of 80nm, 30 parts of phosphor nitrogen composite combustion inhibitors, 2.5 parts of tetrafluoroethylene anti-dripping agents, 0.4 part of antioxidant 1010,0.4 part of Zinic stearas, 0.5 part of white oil, 0.7 part of acrylic ester modifier add in stirrer and be uniformly mixed obtained mixture, its medium speed is 500r/min, stirs 10min; Obtained mixture is added twin screw extruder, and wherein, the extrusion temperature controlling twin screw extruder is 190 DEG C, and screw speed is 300rpm, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
Flame retardant properties, tensile strength, the elongation at break of halogen-free flame retardant PC modified plastics prepared by testing example 1-4, test result is in table 1.
Table 1
| Embodiment | Flame retardant properties | Tensile strength (MPa) | Elongation at break (%) |
| Embodiment 1 | V-1 | 63 | 15 |
| Embodiment 2 | V-0 | 59 | 17 |
| Embodiment 3 | V-0 | 65 | 13 |
| Embodiment 4 | V-0 | 67 | 20 |
The flame retardant properties of halogen-free flame retardant PC modified plastics prepared by the present invention is good, can reach V-0 standard, good mechanical performance, produce without obnoxious flavour after burning, environment friendly is good, and preparation method of the present invention is simple, may be used for the parts preparing the industry such as electrical equipment, telecommunication.
Above embodiment is only used for method detailed of the present invention is described, the present invention is not limited to above-mentioned method detailed, does not namely mean that the present invention must rely on above-mentioned method detailed and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. a halogen-free flame retardant PC modified plastics, is characterized in that, comprises following raw material by weight:
2. a kind of halogen-free flame retardant PC modified plastics according to claim 1, is characterized in that, comprise following raw material by weight:
3. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, the median size of described nano level magnesiumcarbonate is 10nm-100nm.
4. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, described anti-dripping agent is tetrafluoroethylene class anti-dripping agent.
5. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, described oxidation inhibitor is antioxidant 1010 and/or oxidation inhibitor 163.
6. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, described lubricant is Zinic stearas and/or barium stearate.
7. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, described dispersion agent is white oil.
8. a kind of halogen-free flame retardant PC modified plastics according to claim 1 and 2, is characterized in that, described compatilizer is acrylic ester modifier.
9. a preparation method for halogen-free flame retardant PC modified plastics according to claim 1, is characterized in that, comprise the following steps:
(1) by weight, take 50-90 part PC, 10-20 part nano level magnesiumcarbonate, 15-30 part phosphor nitrogen composite combustion inhibitor, 0.5-3 part anti-dripping agent, 0.1-0.5 part oxidation inhibitor, 0.1-0.5 part lubricant, 0.1-0.5 part dispersion agent, 0.1-0.8 part compatilizer add in stirrer and be uniformly mixed obtained mixture;
(2) mixture that step (1) is obtained is added twin screw extruder, obtained halogen-free flame retardant PC modified plastics after extruding, cool, rolling.
10. preparation method according to claim 9, is characterized in that, in step (2), the extrusion temperature of described twin screw extruder is 180-200 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112375360A (en) * | 2020-10-29 | 2021-02-19 | 苏州欧邦塑胶有限公司 | Magnesium carbonate modified halogen-free fireproof engineering plastic and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101023133A (en) * | 2004-09-17 | 2007-08-22 | 东丽株式会社 | Resin composition and molding comprising the same |
| CN104725821A (en) * | 2013-12-24 | 2015-06-24 | 青岛万力科技有限公司 | Phosphorus-nitrogen halogen-free flame-retardant polycarbonate and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101023133A (en) * | 2004-09-17 | 2007-08-22 | 东丽株式会社 | Resin composition and molding comprising the same |
| CN104725821A (en) * | 2013-12-24 | 2015-06-24 | 青岛万力科技有限公司 | Phosphorus-nitrogen halogen-free flame-retardant polycarbonate and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112375360A (en) * | 2020-10-29 | 2021-02-19 | 苏州欧邦塑胶有限公司 | Magnesium carbonate modified halogen-free fireproof engineering plastic and preparation method thereof |
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