CN102863772A - Ultrathin halogen-free flame retardant polycarbonate film and preparation method thereof - Google Patents
Ultrathin halogen-free flame retardant polycarbonate film and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an ultrathin halogen-free flame retardant polycarbonate film and a preparation method thereof. Materials of the ultrathin halogen-free flame retardant polycarbonate film comprise 45% to 99% of polycarbonate resins, 0.5% to 40% of halogen-free flame retardant, 0.1% to 2% of anti-drip agents, 0.2% to 10% of modifying agents and 0.2% to 3% of auxiliaries, the materials are fully and uniformly mixed through a high-speed mixer, the mixed materials enter into a twin-screw extruder from a feeding machine to be subjected to melt extrusion granulation, and granular materials enter into the extruder from the feeding machine to prepare the film. According to the developed ultrathin halogen-free flame retardant polycarbonate film, the flame retardant rating can reach to UL94 VTM-0 grade in a thickness range from 0.025mm to 0.100mm, the relative heat resistance index can reach to 80 DEG C to 130 DEG C, and the ultrathin halogen-free flame retardant polycarbonate film is stable in performances and environment-friendly.
Description
Technical field
The present invention relates to a kind of poly-carbonic acid film and preparation method thereof, be specifically related to a kind of ultra-thin halogen-free and flame-retardant polycarbonate film and preparation method thereof.
Background technology
Polycarbonate (PC) has mechanical property, dimensional stability and the resistance toheat of aggregative equilibrium, and resistance to impact shock and the creep resistant with excellence is celebrated especially.The visible light transmissivity of PC resin is more than 90%, and heat decomposition temperature is high, has good electrical insulating property, is widely used in the numerous areas such as machinery, automobile, space flight and aviation, building, electronics, electric, office and household supplies.
In order to satisfy some Application Areas to the high request of polycarbonate film flame retardant resistance, must carry out fire-retardant finish to it, what traditional fire retardant often adopted is halogen containing flame-retardant, although most of halogen containing flame-retardant addition in the fire retardation PC material is few, flame retardant effect is remarkable, but when burning, produce more smog and poisonous, corrosive gases (such as hydrogen bromide), this gas is abnormally dangerous in fire, because its velocity of diffusion is exceedingly fast, the people is choked to death, its hazardness is even more serious than big fire itself, has caused great harm to the people's lives and property, causes serious environmental pollution.Therefore, no matter be from the security of the lives and property, or from the angle of environmental requirement, the high and low poison of flame retarding efficiency, the halogen-free flame retardants that presses down cigarette and environmental protection replace the main flow that halogen containing flame-retardant will become fire retardant material future development gradually.
At present, for flame-retardant polycarbonate material, sheet material and the moulding of thickness more than 0.5mm has preferably flame retardant effect, and flame retardant rating can reach the UL94VTM-0 level.But for slim polycarbonate film, its flame retardant resistance just obviously reduces, and is just larger with the specific surface of contact with air because film is thinner, and simultaneously, its supportive is also just poorer, easier drippage.Fast development along with science and technology; mobile phone, computer, TV, air-conditioning, power supply unit, the more and more slimmings of electronic component such as MP 3, MP4; this has just proposed Secretary to the insulating material that some key components and parts wherein shields; announce a kind of anti-flaming polycarbonate ester film such as 201110184527.0 and can reach the UL94VTM-0 level at the flame retardant rating of 0.25mm to 0.76mm thickness range; but can not reach UL94 VTM-0 level for the polycarbonate film flame retardant rating below the 0.25mm, it can not satisfy the demand of prior art fully.
Therefore, how to develop the thinner halogen-free and flame-retardant polycarbonate film of thickness and become one of technical problem that the research worker endeavours to solve.
Summary of the invention
Thickness is lower than the flame retardant resistance of 0.100mm polycarbonate film and the film forming difficulty of ultrathin film in the prior art in order to overcome, and the invention provides that a kind of thickness flame retardant rating in 0.025mm to 0.100mm scope can reach UL94 VTM-0 grade, relatively the heatproof index can reach 80 ℃ to ultra-thin halogen-free and flame-retardant polycarbonate film of 130 ℃ of scopes, environmental protection and stable performances and preparation method thereof.
The present invention adopts following technical scheme:
Ultra-thin halogen-free and flame-retardant polycarbonate film is made by the raw material of following weight proportion: 45% ~ 99% polycarbonate resin, 0.5% ~ 40% halogen-free flame retardants, 0.1% ~ 2% anti-dripping agent, 0.2% ~ 10% properties-correcting agent, 0.2% ~ 3% auxiliary agent.
Described halogen-free flame retardants is inorganic combustion inhibitor, phosphonium flame retardant, contain silicon-series five-retardant, contain nitrogen combustion inhibitor, in the sulfur-bearing fire retardant, expansion type flame retardant, organic aromatic sulfonic acid salt fire retardant one or more.
Described properties-correcting agent be toughner, retardant synergist, anti-flaming smoke-inhibiting agent, impact modifier, UV light absorber and static inhibitor in one or more.
Described auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material.
Ultra-thin halogen-free and flame-retardant polycarbonate thin film technology method may further comprise the steps:
A) preparation of fire-retardant polycarbonate masterbatch
Polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent etc. are predrying for subsequent use; By a certain percentage polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent are entered from feeding machine after the full and uniform mixing of high speed mixer and melt extrude granulation in the twin screw extruder, the temperature in each district of forcing machine is controlled between 230 ℃ to 320 ℃; Melt blended material through extrude, after the pelletizing, drying for standby.
B) ultra-thin halogen-free and flame-retardant polycarbonate thin film technology
The fire-retardant pellet of abundant dried polycarbonate is entered into forcing machine from feeding machine to be filmed.The temperature in each district of forcing machine is controlled between 220 ℃ to 320 ℃, and under certain pressure, melt blended material through T-shaped mould, is melt extruded; After the melt that T-shaped mould flows out prolongs, finalizes the design through three roll-ins, draw out ultra-thin Halogen polycarbonate film by certain membrane speed, membrane speed is 10-50m/min.
Among the preparation method of polycarbonate film, by the improvement to extruder screw curve design and T-shaped die head, assurance ultrathin fire-resistant film thickness is extruded homogeneity, and the tolerance variations scope is little.
Compared with prior art, the fire retardant systems that the present invention adopts does not contain halogen element, has realized the exploitation of Halogen polycarbonate film, and beneficial effect is:
1. polycarbonate film of the present invention is when thickness is 0.025mm to 0.100mm, flame retardant resistance has reached UL94 VTM-0 level, can be used for the insulation protection of the ultrathin electronic components such as mobile phone, computer, TV, air-conditioning, power supply unit, MP3, MP4, overcome the following poor technological deficiency of polycarbonate film flame retardant effect of 0.100mm, satisfied the demands such as product lightweight, ultrathin typeization, narrow frame;
2. the consistency of each composition is good, and the surface is without precipitate, and each composition can be dispersed in well and form homogeneous system in the base material;
3. this film possesses excellent outward appearance, physicals, mechanical property, electrical property, weather resistance etc.;
4. nontoxic, harmless, pollution-free, meet the RoHS of European Union, REACH, TCO ﹠amp; The strict environmental protection standards such as Blue Angel;
5. flame retarding efficiency is high, can give the flame retardant resistance of polycarbonate film excellence.
Embodiment
Below in conjunction with embodiment the present invention is further described, but embodiments of the present invention are not limited to this.
Flame retardant resistance is judged according to UL94 testing evaluation method.
Embodiment 1:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is inorganic combustion inhibitor, and its shared mass percent is 0.5% to 40%, and preferable range is 15% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and shared mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
Preparation method's step of ultra-thin Halogen polycarbonate film is as follows in the present embodiment:
A) preparation of fire-retardant polycarbonate masterbatch
Polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent etc. are predrying for subsequent use; By a certain percentage polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent are entered from feeding machine after the full and uniform mixing of high speed mixer and melt extrude granulation in the twin screw extruder, the temperature in each district of forcing machine is controlled between 230 ℃ to 320 ℃; Melt blended material through extrude, after the pelletizing, drying for standby.
B) ultra-thin halogen-free and flame-retardant polycarbonate thin film technology
The fire-retardant pellet of abundant dried polycarbonate is entered into forcing machine from feeding machine to be filmed.The temperature in each district of forcing machine is controlled between 220 ℃ to 320 ℃, and under certain pressure, melt blended material through T-shaped mould, is melt extruded; After the melt that T-shaped mould flows out prolongs, finalizes the design through three roll-ins, draw out ultra-thin Halogen polycarbonate film by certain speed, membrane speed is 10-50m/min.
Fire retardant is inorganic combustion inhibitor, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table one, the content of each component and the relation of flame retardant resistance as shown in Table 1:
The content of each component of table one and the relation of flame retardant resistance (fire retardant is inorganic combustion inhibitor)
Embodiment 2:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is phosphonium flame retardant, and its shared mass percent is 0.5% to 40%, and preferable range is 5% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and shared mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is phosphonium flame retardant, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table two, the content of each component and the relation of flame retardant resistance as shown in Table 2:
The content of each component of table two and the relation of flame retardant resistance (fire retardant is phosphonium flame retardant)
Embodiment 3:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is Silicone-containing Flame Retardant, and its shared mass percent is 0.5% to 40%, and preferable range is 2% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and shared mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is Silicone-containing Flame Retardant, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table three, the relation of each component concentration and flame retardant resistance as shown in Table 3:
The relation of each component concentration of table three and flame retardant resistance (fire retardant is Silicone-containing Flame Retardant)
Embodiment 4:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is for containing nitrogen combustion inhibitor, and its shared mass percent is 0.5% to 40%, and preferable range is 10% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and shared mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is for containing nitrogen combustion inhibitor, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table four, the relation of each component concentration and flame retardant resistance as shown in Table 4:
The relation of each component concentration of table four and flame retardant resistance (fire retardant is for containing nitrogen combustion inhibitor)
Embodiment 5:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is organic aromatic sulfonic acid salt fire retardant, and its shared mass percent is 0.5% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent be toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and static inhibitor in one or more, shared mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is organic aromatic sulfonic acid salt fire retardant, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table five, the relation of each component concentration and flame retardant resistance as shown in Table 5:
The relation of each component concentration of table five and flame retardant resistance (fire retardant is organic aromatic sulfonic acid salt fire retardant)
Embodiment 6:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is the sulfur-bearing fire retardant, and its shared mass percent is 0.5% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is the sulfur-bearing fire retardant, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table six, the relation of each component concentration and flame retardant resistance as shown in Table 6:
The relation of each component concentration of table six and flame retardant resistance (fire retardant is the sulfur-bearing fire retardant)
Embodiment 7:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is the swelling property composite flame-retardant agent, and its shared mass percent is 0.5% to 40%, and preferable range is 4% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is the swelling property composite flame-retardant agent, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table seven, the relation of each component concentration and flame retardant resistance as shown in Table 7:
The relation of each component concentration of table seven and flame retardant resistance (fire retardant is the swelling property composite flame-retardant agent)
Embodiment 8:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is silicon-phosphorus-sulphur composite flame-retardant agent, and its shared mass percent is 0.5% to 40%, and preferable range is 3% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is siliceous, phosphorous, sulfur-bearing composite flame-retardant agent, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table eight, the relation of each component concentration and flame retardant resistance as shown in Table 8:
The relation of each component concentration of table eight and flame retardant resistance (fire retardant is siliceous, phosphorous, sulfur-bearing composite flame-retardant agent)
Embodiment 9:
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is nitrogenous and phosphorous composite flame-retardant agent, and its shared mass percent is 0.5% to 40%, and preferable range is 4% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is nitrogenous and phosphorous composite flame-retardant agent, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table nine, the relation of each component concentration and flame retardant resistance as shown in Table 9:
The relation of each component concentration of table nine and flame retardant resistance (fire retardant is nitrogenous and phosphorous composite flame-retardant agent)
Embodiment 10
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is two or more inorganic composite flame retardants, and its shared mass percent is 0.5% to 40%, and preferable range is 10% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is two or more inorganic composite flame retardants, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table nine, the relation of each component concentration and flame retardant resistance as shown in Table 10:
The relation of each component concentration of table ten and flame retardant resistance (fire retardant is two or more inorganic composite flame retardants)
Embodiment 11
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is siliceous and phosphorous composite flame-retardant agent, and its shared mass percent is 0.5% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is siliceous and phosphorous composite flame-retardant agent, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table ten one, and the relation of each component concentration and flame retardant resistance is shown in table ten one:
The relation of table ten each component concentration and flame retardant resistance (fire retardant is siliceous and phosphorous composite flame-retardant agent)
Embodiment 12
The shared mass percent of polycarbonate resin is 45% to 99%.
The used fire retardant of halogen-free flame-retardant system is the composite flame-retardant agent of phosphonium flame retardant and inorganic combustion inhibitor, and its shared mass percent is 0.5% to 40%, and preferable range is 6% to 40%.
The shared mass percent of anti-dripping agent is 0.1% to 2%.
Properties-correcting agent is one or more in toughner, retardant synergist, anti-flaming smoke-inhibiting agent, UV light absorber, impact modifier and the static inhibitor, and accounting for mass percent is 0.2% to 10%.
Auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material, and shared mass percent is 0.2% to 3%.
The preparation method of ultra-thin Halogen polycarbonate film is with embodiment 1 in the present embodiment.
Fire retardant is the composite flame-retardant agent of phosphonium flame retardant and inorganic combustion inhibitor, prepares ultra-thin Halogen polycarbonate film by the content of each component in the table ten two, and the relation of each component concentration and flame retardant resistance is shown in table ten two:
The relation of table ten two each component concentrations and flame retardant resistance (fire retardant is the composite flame-retardant agent of phosphonium flame retardant and inorganic combustion inhibitor)
As mentioned above, by certain prescription, proportioning and simple, ripe technique, resulting materials of the present invention all can reach UL94 VTM-0 level at the flame retardant rating of thickness during in 0.025mm to 0.100mm scope, has realized the exploitation of ultra-thin halogen-free and flame-retardant polycarbonate film.
Although invention has been described with reference to explanatory embodiment of the present invention here, but not in order to limit the present invention, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of and claim open in the application, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.For example, the described formulating of recipe in above-described embodiment and the combination of flame-retardant system etc.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, purposes of the present invention and composition also will be obvious.
Claims (6)
1. ultra-thin halogen-free and flame-retardant polycarbonate film, it is characterized in that being made by the raw material of following weight proportion: 45% ~ 99% polycarbonate resin, 0.5% ~ 40% halogen-free flame retardants, 0.1% ~ 2% anti-dripping agent, 0.2% ~ 10% properties-correcting agent, 0.2% ~ 3% auxiliary agent.
2. ultra-thin halogen-free and flame-retardant polycarbonate film according to claim 1, it is characterized in that described halogen-free flame retardants be inorganic combustion inhibitor, phosphonium flame retardant, contain silicon-series five-retardant, contain nitrogen combustion inhibitor, in the sulfur-bearing fire retardant, expansion type flame retardant, organic aromatic sulfonic acid salt fire retardant one or more.
3. ultra-thin halogen-free and flame-retardant polycarbonate film according to claim 1, it is characterized in that described properties-correcting agent be toughner, retardant synergist, anti-flaming smoke-inhibiting agent, impact modifier, UV light absorber and static inhibitor in one or more.
4. ultra-thin halogen-free and flame-retardant polycarbonate film according to claim 1 is characterized in that described auxiliary agent is one or more in thermal oxidation stabilizer, photostabilizer, dispersion agent, compatilizer, the tinting material.
5. ultra-thin halogen-free and flame-retardant polycarbonate thin film technology method is characterized in that may further comprise the steps:
A) preparation of fire-retardant polycarbonate masterbatch
Polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent etc. are predrying for subsequent use; By a certain percentage polycarbonate, halogen-free flame retardants, anti-dripping agent, properties-correcting agent and auxiliary agent are entered from feeding machine after the full and uniform mixing of high speed mixer and melt extrude granulation in the twin screw extruder, the temperature in each district of forcing machine is controlled between 230 ℃ to 320 ℃; Melt blended material through extrude, after the pelletizing, drying for standby;
B) ultra-thin halogen-free and flame-retardant polycarbonate thin film technology
The fire-retardant pellet of abundant dried polycarbonate is entered into forcing machine from feeding machine to be filmed.The temperature in each district of forcing machine is controlled between 220 ℃ to 320 ℃, and under certain pressure, melt blended material through T-shaped mould, is melt extruded; After the melt that T-shaped mould flows out prolongs, finalizes the design through three roll-ins, draw out ultra-thin Halogen polycarbonate film by certain membrane speed.
6. ultra-thin halogen-free and flame-retardant polycarbonate thin film technology method according to claim 5 is characterized in that membrane speed is 10-50m/min.
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| EP3015494B1 (en) | 2013-06-26 | 2018-05-02 | Mitsubishi Gas Chemical Company, Inc. | Flame-retardant sheet or film, products comprising the same and process for production thereof |
| US10263225B2 (en) | 2013-06-26 | 2019-04-16 | Mitsubishi Gas Chemical Company, Inc. | Flame-retardant sheet or film, products comprising the same and process for production thereof |
| CN104212147A (en) * | 2014-08-25 | 2014-12-17 | 安徽嘉木橡塑工业有限公司 | Polycarbonate film |
| CN104804389A (en) * | 2015-03-20 | 2015-07-29 | 江苏瀚阳新材料科技有限公司 | Black halogen-free flame-retardant PC (polycarbonate) film and preparation method thereof |
| CN106147191A (en) * | 2016-08-29 | 2016-11-23 | 四川潽鑫科技有限公司 | A kind of high fire-retardance rank Halogen polycarbonate film material and preparation method thereof |
| CN107418179A (en) * | 2017-06-06 | 2017-12-01 | 四川安费尔高分子材料科技有限公司 | A kind of halogen-free flame retardant polycarbonate film PP Pipe Compound and preparation method thereof |
| CN110373013A (en) * | 2019-08-08 | 2019-10-25 | 广东聚邦兴材科技有限公司 | A kind of high-strength PC |
| CN111662528A (en) * | 2020-07-13 | 2020-09-15 | 西南科技大学 | PMMA/PC-based ultrathin composite optical film and preparation method and application thereof |
| CN111662528B (en) * | 2020-07-13 | 2022-07-15 | 西南科技大学 | PMMA/PC-based ultrathin composite optical film and preparation method and application thereof |
| CN112521742A (en) * | 2020-12-07 | 2021-03-19 | 苏州奥美材料科技有限公司 | High-deformation flame-retardant polycarbonate film and preparation method thereof |
| CN113524818A (en) * | 2021-08-05 | 2021-10-22 | 揭西鑫昌顺电子科技有限公司 | Mute black mobile phone internal explosion-proof membrane material and preparation method thereof |
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