CN110373011A - Fire-retardant light diffusion PC material of a kind of thin-walled and preparation method thereof - Google Patents
Fire-retardant light diffusion PC material of a kind of thin-walled and preparation method thereof Download PDFInfo
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
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- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract
The invention discloses fire-retardant light diffusion PC materials of a kind of thin-walled and preparation method thereof.The fire-retardant light diffusion PC material of thin-walled includes the raw material of following parts by weight: 70-90 parts of polycarbonate, polycarbonate -0-30 parts of polysiloxane copolymer 1,0.5-2 parts of light diffusing agent, 1-3 parts of fire retardant, 0.2 part of antioxidant, 0.3 part of lubricant；Preparation method are as follows: dry polycarbonate, by polycarbonate-poly organo alkyl copolymer, light diffusing agent, fire retardant, antioxidant and mix lubricant, premix is made, polycarbonate and premix are granulated from different spouts investment double screw extruder.The fire-retardant light diffusion PC material of thin-walled of the invention can be used for requiring flame retardant property stringent lighting area, have good optical property and flame retardant property, excellent combination property；In addition, preparation method of the invention have the advantages that it is simple to operation.
Description
Technical field
The present invention relates to polycarbonate composite material technical fields, more specifically, it relates to which a kind of fire-retardant light of thin-walled expands
Dissipate PC material and preparation method thereof.
Background technique
It is by adding light diffusing agent in PC resin that light, which spreads PC, and light diffusing agent is spherical in shape, is dispersed in PC resin
In, island structure is formed, since PC resin is different with the index of refraction of light diffusing agent, light is anti-similar to mirror surface on light diffusing agent surface
It penetrates, by multiple reflections, reaches light diffusion effect.Additive amount, particle size and the distribution of light diffusing agent, index of refraction determine material
The optical property of material.Although polycarbonate resin has certain flame retardancy, only UL94V-2 grades, common light spreads PC, nothing
Method meets the thinner fire-retardant demand of optical goods, it is therefore desirable to further increase its flame retardant property.At present by spreading PC in light
Middle addition fire retardant, the research to improve fire-retardant rank is existing very much, but the addition of the fire retardant of most of types, hinders improving
While combustion property, the characteristics of sacrificing light diffusion PC high transparency, haze, using being very limited.
In addition, light diffusion PC is higher to the light transmittance requirement of material, usually it is added in thin-walled fire retardation PC material fluorine-containing anti-
Low dose, to enhance the flame retardant property of PC material, but after this auxiliary agent is added, can be such that the light transmittance of product substantially reduces, because
This, researches and develops that a kind of flame retardant property is good, and has the advantages that the light diffusion PC material of high light transmission and haze is problem to be solved.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of fire-retardant light diffusion PC of thin-walled
Material is added polycarbonate-poly organo alkyl copolymer as substrate, improves the anti-flammability and impact resistance of PC resin
Can, while substrate being made to still maintain higher transparency.
Second object of the present invention is to provide a kind of preparation method of fire-retardant light diffusion PC material of thin-walled have system
Make simple process, easily operated advantage.
To realize above-mentioned first purpose, the present invention provides a kind of fire-retardant light of thin-walled of following technical solution to spread PC material
Material, the raw material including following parts by weight:
By using above-mentioned technical proposal, due to using polycarbonate-poly organo alkyl copolymer, with transparent
Property, heat resistance and the characteristics of excellent impact resistance, improve the flame retardant property of PC material, provide possibility, light for thin-walled is fire-retardant
Diffusant keeps the rate of light excessively of PC material high, and mist degree is big, plays the role of even light and light transmission, the addition of fire retardant is so that PC material has
There is excellent flame retardant property, each raw material cooperates, and makes PC material while having compared with high flame retardant and impact resistance, tool
There are more preferable light transmission rate and transparency.
Further, the polycarbonate-poly organo alkyl copolymer contains 1,1 that mass percent is 6-20%,
5,5- tetramethyl -3,3- diphenyl trisiloxanes block structures.
By using above-mentioned technical proposal, due to containing a certain amount of 1 in polycarbonate-poly organo alkyl copolymer,
1,5,5,-tetramethyl -3,3- diphenyl trisiloxanes block structure, so that polycarbonate-poly organo alkyl copolymer is opposite
The problem of for common polycarbonate, light transmittance is higher, and light transmittance declines caused by can making up because of addition fire retardant, thus
While making PC material that there is excellent fire-retardancy, there is stronger light transmittance and transparency.
Further, the polycarbonate-poly organo alkyl copolymer by following parts by weight raw material after mixing by
Draw ratio is 40, screw diameter 35mm, and the twin-screw extrusion that temperature is 210-250 DEG C:
By using above-mentioned technical proposal, tetrahydrofuran-propylene oxide copolyether glycol and polyglycol type epoxy resins are made
To improve polycarbonate-poly organo alkyl copolymer light transmittance auxiliary agent, while the viscosity of PC matrix is controlled, poly- carbon can be promoted
Acid esters and 1, the extent of reaction of 1,5,5- tetramethyl -3,3- diphenyl trisiloxanes make 1,1,5,5- tetramethyl-in polycarbonate
The content of 3,3- diphenyl trisiloxanes is between 6-20%.
Further, the antioxidant is the antioxidant 245 and antioxidant 421S that mass ratio is 1:2.
By using above-mentioned technical proposal, by the mutual cooperation of two kinds of antioxidant, make PC material high temperature resistant and resistance to Huang
Denaturation can get a promotion.
Further, the polycarbonate is bisphenol A polycarbonate, using Mitsubishi S2000, strong wind PC02-10L, section
Think one of wound 2805 and Wan Hua 2100, the terminal hydroxy group content of Mitsubishi S20000 is 320ppm, the hydroxyl end of strong wind PC02-10L
Base content is 500ppm, and the terminal hydroxy group content of Cohan wound 2805 is 450ppm, and the terminal hydroxy group content of Wan Hua 2100 is 100ppm.
Further, the fire retardant is KFBS fire retardant that mass ratio is 1:4 and silicone flame retardant, lubricant are
One of PETS or EBS.
By using above-mentioned technical proposal, two kinds of fire retardants are mutually used in compounding, and make the fire-retardant light diffusion PC material of thin-walled
Flame retardant property is strengthened.
Further, the light diffusing agent is poly- first silicon systems spherical particle, and partial size is 1-2 μm, refractive index 1.4-1.5.
By using above-mentioned technical proposal, by the refraction of light diffusing agent microballoon make to become by the light of sample it is soft not
It is dazzling, while having both high light transmission and haze.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of -7 any according to claim 1
The preparation method of the fire-retardant light diffusion PC material of thin-walled described in, which comprises the following steps:
S1, polycarbonate is placed in in 120 DEG C of baking oven dry 4h；
S2, polycarbonate-poly organo alkyl copolymer, light diffusing agent, fire retardant, antioxidant and lubricant is weighed, mixes 5-
Premix is made in 10min；
S3, premix obtained by step S2 and the resulting polycarbonate of step S1 are put into double screw extruder from different spouts
Blending extrusion, through tie rod, cooling, pelletizing finished product.
In the step S3 area's temperature of double screw extruder be 180~240 DEG C, two area's temperature be 240~260 DEG C,
Three area's temperature are 240~260 DEG C, four area's temperature are 240~260 DEG C, five area's temperature are 250~260 DEG C, six area's temperature are 250
~260 DEG C, seven area's temperature are 250~260 DEG C, and eight area's temperature are 250~260 DEG C, and head temperature is 230~250 DEG C.
The draw ratio of double screw extruder is 40:1 in the step S2, and engine speed is 200~300r/min, production capacity
30-35kg/h, vacuum degree -0.6~-0.4MPa.
In conclusion the invention has the following advantages:
The first, poly- carbon is obtained using 1,1,5,5- tetramethyl -3,3- diphenyl trisiloxanes modified polycarbonate due to the present invention
Acid esters-poly organo alkyl copolymer, while using the light diffusing agent for improving light transmittance and improving the fire retardant of flame retardant property, from
And excellent fireproof performance is obtained, and light transmittance and the higher PC material of transparency.
The second, preferably using the moderate polycarbonate of terminal hydroxyl content as substrate in the present invention, due to thermal stability compared with
It is good, so that PC material be made to obtain the effect of excellent fireproof performance.
By using double screw extruder Reaction extrusion in third, the present invention, polycarbonate-polysiloxane is made
Copolymer, then the substances such as itself and polycarbonate, fire retardant, light diffusing agent are subjected to blending extrusion, it is good to be made flame retardant property, thoroughly
Light rate is high, and the fire-retardant light of thin-walled of excellent combination property spreads PC material.
Specific embodiment
Invention is further described in detail with reference to embodiments.
Polycarbonate-poly organo alkyl copolymer preparation example 1-3
1,1,5,5- tetramethyl -3,3 in preparation example 1-3,-diphenyl trisiloxanes are selected from the KR-511 of SHIN-ETSU HANTOTAI's chemistry, tetrahydro furan
Mutter-DCB-2000 of the propylene oxide copolyether glycol selected from NOF Corp, and polyglycol type epoxy resins are selected from the U.S.
The DER732 of DOW Chemical.
Preparation: 1: by 100kg polycarbonate, 0.05 part of tetramethyl -3,3 1,1,5,5-,-diphenyl trisiloxanes,
After 0.25kg tetrahydrofuran-propylene oxide copolyether glycol, 0.06kg polyglycol type epoxy resins and 0.3 part of antioxidant mixing,
Reaction extrusion is carried out by double screw extruder, the draw ratio of double screw extruder is 40, screw diameter 35mm, squeezes out temperature
Degree is 210 DEG C, and 1,1,5,5- tetramethyl -3,3, it is total that-diphenyl trisiloxanes block structure accounts for polycarbonate-polysiloxane
The 6% of polymers, polycarbonate are bisphenol A polycarbonate, and the article No. sold selected from Wanhua Chemical Group Co., Ltd. is
2220 polycarbonate, antioxidant are made of antioxidant 245 and antioxidant 421S according to the mass ratio of 1:2.
Preparation example 2: by 100kg polycarbonate, 0.05 part of tetramethyl -3,3 1,1,5,5-,-diphenyl trisiloxanes,
After 0.25kg tetrahydrofuran-propylene oxide copolyether glycol, 0.06kg polyglycol type epoxy resins and 0.3 part of antioxidant mixing,
Reaction extrusion is carried out by double screw extruder, the draw ratio of double screw extruder is 40, screw diameter 35mm, squeezes out temperature
Degree is 230 DEG C, and 1,1,5,5- tetramethyl -3,3, it is total that-diphenyl trisiloxanes block structure accounts for polycarbonate-polysiloxane
The 13% of polymers, polycarbonate are bisphenol A polycarbonate, and the article No. sold selected from Wanhua Chemical Group Co., Ltd. is
2100 polycarbonate, antioxidant are made of antioxidant 245 and antioxidant 421S according to the mass ratio of 1:2.
Preparation example 3: by 100kg polycarbonate, 0.05 part of tetramethyl -3,3 1,1,5,5-,-diphenyl trisiloxanes,
After 0.25kg tetrahydrofuran-propylene oxide copolyether glycol, 0.06kg polyglycol type epoxy resins and 0.3 part of antioxidant mixing,
Reaction extrusion is carried out by double screw extruder, the draw ratio of double screw extruder is 40, screw diameter 35mm, squeezes out temperature
Degree is 210 DEG C, and 1,1,5,5- tetramethyl -3,3, it is total that-diphenyl trisiloxanes block structure accounts for polycarbonate-polysiloxane
The 20% of polymers, polycarbonate are bisphenol A polycarbonate, are selected from Mitsubishi S-2000F, and antioxidant is 245 He of antioxidant
Antioxidant 421S is made according to the mass ratio of 1:2.
Embodiment
Silicone flame retardant is selected from the SIFR-871F of Guangdong Quan Sheng Chemical Co., Ltd., KFBS resistance in embodiment 1-10
It fires agent and is selected from the FR390 that upper Haikang Rui Si Chemical Co., Ltd. sells, light diffusing agent is selected from the carefree SL200M of South Korea, antioxidant
245 and antioxidant 421S is selected from Rianlon Corporation, and PETS is selected from Dongguan Long Su Science and Technology Ltd.
The brand of sale is the PETS of Clariant, and it is EB-FF that EBS, which is selected from the article No. that Dongguan City Kang Jin new material Science and Technology Ltd. sells,
EBS.
Embodiment 1: a kind of fire-retardant light diffusion PC material of thin-walled, raw material proportioning is as shown in table 1, the fire-retardant light diffusion of the thin-walled
The preparation method of PC material the following steps are included:
S1, polycarbonate is placed in in 120 DEG C of baking oven dry 4h, polycarbonate is selected from Ningbo Zhe Tie strong wind Chemical Co., Ltd.
The PC02-10L of sale, the content of polycarbonate terminal hydroxy group are 500ppm；
S2, claim 30kg polycarbonate-poly organo alkyl copolymer, 0.6kg light diffusing agent, 2kg fire retardant, 0.2kg antioxidant
With 0.3kg lubricant, 5min is mixed, premix is made；
Wherein polycarbonate-poly organo alkyl copolymer is made of preparation example 1, and light diffusing agent is poly- first silicon systems spheroidal particle,
Partial size is 2 μm, and refractive index 1.4, fire retardant is mixed by KFBS fire retardant and silicone flame retardant according to 1:4, antioxygen
Agent is made of antioxidant 245 and antioxidant 421S according to the mass ratio of 1:2, lubricant PETS；
S3, premix obtained by step S2 and the resulting 70kg polycarbonate of step S1 there is into investment twin-screw from different spouts
Blending extrusion in extruder, through tie rod, cooling, pelletizing finished product, area's temperature of double screw extruder is 180 DEG C, 2nd area
Temperature is 240 DEG C, three area's temperature are 240 DEG C, four area's temperature are 240 DEG C, five area's temperature are 250 DEG C, six area's temperature are 250 DEG C,
Seven area's temperature are 250 DEG C, and eight area's temperature are 250 DEG C, and head temperature is 230 DEG C, and the draw ratio of double screw extruder is 40:1, main
Machine revolving speed is 200r/min, production capacity 30kg/h, vacuum degree -0.6MPa.
The raw material proportioning of the fire-retardant light diffusion PC material of thin-walled in 1 embodiment 1-5 of table
Embodiment 2: a kind of fire-retardant light diffusion PC material of thin-walled, raw material proportioning is as shown in table 1, the difference from embodiment 1 is that, gather
Carbonic ester, polycarbonate-poly organo alkyl copolymer additive amount variation, polycarbonate-poly organo alkyl copolymer is by making
Standby example 2 is made, and light diffusing agent is poly- first silicon systems spheroidal particle, and partial size is 1.5 μm, refractive index 1.45, lubricant EBS, system
The incorporation time of premix is 8min in Preparation Method, and area's temperature of double screw extruder is 210 DEG C, two area's temperature are 250 DEG C,
Three area's temperature are 250 DEG C, four area's temperature are 250 DEG C, five area's temperature are 255 DEG C, six area's temperature are 255 DEG C, and seven area's temperature are 255
DEG C, eight area's temperature are 255 DEG C, and head temperature is 240 DEG C, and the draw ratio of double screw extruder is 40:1, engine speed 250r/
Min, production capacity 33kg/h, vacuum degree -0.5MPa.
Embodiment 3: a kind of fire-retardant light diffusion PC material of thin-walled, raw material proportioning is as shown in table 1, and the difference with embodiment 1 exists
In, polycarbonate, polycarbonate-poly organo alkyl copolymer additive amount variation, polycarbonate-poly organo alkyl copolymer
It is made of preparation example 3, light diffusing agent is poly- first silicon systems spheroidal particle, and partial size is 1 μm, refractive index 1.5, is premixed in preparation method
The incorporation time of material is 10min, and area's temperature of double screw extruder is 240 DEG C, and two area's temperature are 260 DEG C, three area's temperature are
260 DEG C, four area's temperature be 260 DEG C, five area's temperature are 260 DEG C, six area's temperature are 260 DEG C, seven area's temperature be 260 DEG C, eight area's temperature
Degree is 260 DEG C, and head temperature is 250 DEG C, and the draw ratio of double screw extruder is 40:1, engine speed 300r/min, production capacity
35kg/h, vacuum degree -0.4MPa.
Embodiment 4-7: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, polycarbonate, poly- carbon
Acid esters-poly organo alkyl copolymer additive amount variation, light diffusing agent is different with fire retardant additive amount, raw material proportioning such as table 1
It is shown.
Embodiment 8: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, polycarbonate is Cohan wound
2805, the terminal hydroxy group content of polycarbonate is 450ppm.
Embodiment 9: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, polycarbonate Wan Hua
2100, the terminal hydroxy group content of polycarbonate is 100ppm.
Embodiment 10: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, polycarbonate is Mitsubishi
S20000, the terminal hydroxy group content of polycarbonate are 320ppm.
Comparative example
Comparative example 1: a kind of fire-retardant light of thin-walled spreads PC material, the difference from embodiment 1 is that, it is not added with that polycarbonate-is poly- to be had
Organic siloxane copolymer.
Comparative example 2: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, it is not added with fire retardant.
Comparative example 3: a kind of fire-retardant light diffusion PC material of thin-walled, the difference from embodiment 1 is that, it is not added with light diffusing agent.
Performance detection test
The fire-retardant light diffusion PC material of thin-walled is prepared according to the method in embodiment 1-10 and comparative example 1-3, according to the detection in table 2
Method and testing conditions carry out performance detection to thin-walled fire-retardant light diffusion PC material, and testing result is reported in Table 3 below.
The performance test conditions and testing standard of the fire-retardant light diffusion PC material of 2 thin-walled of table
The performance test results of each embodiment of table 3 and the fire-retardant light diffusion PC material of the thin-walled of each comparative example preparation
By the high S2000 type polycarbonate ratio of terminal hydroxy group content is implemented in embodiment 10 it can be seen from testing result comparison in table 3
Flame retardant rating is high when magnificent 2100 polycarbonate of hydroxy radical content is low in example 9 ten thousand do substrate, creates simultaneously above Cohan in embodiment 8
Flame retardant rating when strong wind PC02-10L type polycarbonate does substrate in 2805 type polycarbonate and embodiment 1, i.e. terminal hydroxy group contain
Amount has certain positive acting to the flame retardant property of product in a certain range, while can be seen that and pass through addition fire retardant,
In the case where anti-dripping agent, light diffusion PC material reaches V0 grades, and does not influence the light transmission rate and mist degree of PC material.
Comparative example 1 is because being not added with polycarbonate-poly organo alkyl copolymer, although PC material light transmittance and mist degree and reality
Example 1 is applied to be not much different, but the mechanical property of PC material reduces, flame retardant rating is deteriorated, and illustrates to add polycarbonate-poly-organosilicon
Siloxane copolymers can increase the mechanical property of PC material, reinforce its resistance under the premise of improving PC material transmissivity and mist degree
Fire performance.
Comparative example 2 is because being not added with fire retardant, although the light transmission rate of PC material and transparency are preferable, mechanical property is stronger,
But flame retardant property is poor, illustrates that the flame retardant property of PC material can be enhanced by adding fire retardant, has PC material preferable saturating
When lightness, fire retardancy is also relatively strong.
For comparative example 3 because being not added with light diffusing agent, the light transmission rate of PC material is poor, and mist degree reduces, and dispersion degree becomes smaller, and is added
Light diffusing agent can make PC material having preferable transparency with preferable mechanical property and under the premise of flame retardant property.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of fire-retardant light of thin-walled spreads PC material, which is characterized in that the raw material including following parts by weight:
70-90 parts of polycarbonate
Polycarbonate -0-30 parts of polysiloxane copolymer 1
0.5-2 parts of light diffusing agent
1-3 parts of fire retardant
0.2 part of antioxidant
0.3 part of lubricant.
2. the fire-retardant light of thin-walled according to claim 1 spreads PC material, which is characterized in that the polycarbonate-gathers organic
Silicone copolymers contain 1,1,5,5- tetramethyl -3,3- diphenyl trisiloxanes block structure that mass percent is 6-20%.
3. the fire-retardant light of thin-walled according to claim 1 spreads PC material, which is characterized in that the polycarbonate-gathers organic
Silicone copolymers are after mixing 40, screw diameter 35mm by draw ratio by the raw material of following parts by weight, and temperature is
210-250 DEG C of double screw extruder squeezes out:
100 parts of polycarbonate
0.05 part of trisiloxanes of 1,1,5,5- tetramethyl -3,3- diphenyl
Tetrahydrofuran -0.25 part of propylene oxide copolyether glycol
0.06 part of polyglycol type epoxy resins
0.3 part of antioxidant.
4. according to claim 1 or 3 described in any item fire-retardant light of thin-walled spread PC material, which is characterized in that the antioxidant
The antioxidant 245 and antioxidant 421S for being 1:2 for mass ratio.
5. the fire-retardant light of thin-walled according to claim 1 spreads PC material, which is characterized in that the polycarbonate is bisphenol-A
Type polycarbonate, using one of Mitsubishi S2000, strong wind PC02-10L, Cohan wound 2805 and Wan Hua 2100, Mitsubishi S20000
Terminal hydroxy group content be 320ppm, the terminal hydroxy group content of strong wind PC02-10L is 500ppm, the terminal hydroxy group content of Cohan wound 2805
For 450ppm, the terminal hydroxy group content of Wan Hua 2100 is 100ppm.
6. the fire-retardant light of thin-walled according to claim 1 spreads PC material, which is characterized in that the fire retardant is that mass ratio is
The KFBS fire retardant and silicone flame retardant of 1:4, lubricant are one of PETS or EBS.
7. the fire-retardant light of thin-walled according to claim 1 spreads PC material, which is characterized in that the light diffusing agent is poly- first silicon
It is spherical particle, partial size is 1-2 μm, refractive index 1.4-1.5.
8. a kind of preparation method of the fire-retardant light diffusion PC material of thin-walled according to claim 1-7, feature exist
In, comprising the following steps:
S1, polycarbonate is placed in in 120 DEG C of baking oven dry 4h；
S2, polycarbonate-poly organo alkyl copolymer, light diffusing agent, fire retardant, antioxidant and lubricant is weighed, mixes 5-
Premix is made in 10min；
S3, premix obtained by step S2 and the resulting polycarbonate of step S1 are put into double screw extruder from different spouts
Blending extrusion, through tie rod, cooling, pelletizing finished product.
9. the preparation method of the fire-retardant light diffusion PC material of thin-walled according to claim 8, which is characterized in that the step S3
One area's temperature of middle double screw extruder is 180~240 DEG C, and two area's temperature are 240~260 DEG C, three area's temperature are 240~260
DEG C, four area's temperature be 240~260 DEG C, five area's temperature are 250~260 DEG C, six area's temperature are 250~260 DEG C, seven area's temperature are
250~260 DEG C, eight area's temperature are 250~260 DEG C, and head temperature is 230~250 DEG C.
10. the preparation method of the fire-retardant light diffusion PC material of thin-walled according to claim 8, which is characterized in that the step
The draw ratio of double screw extruder is 40:1 in S2, and engine speed is 200~300r/min, production capacity 30-35kg/h, vacuum degree-
0.6~-0.4MPa.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940477A (en) * | 2020-12-21 | 2021-06-11 | 胡梦蝶 | Scratch-resistant UV-resistant flame-retardant photodiffusion polycarbonate composition and preparation method thereof |
| CN114085512A (en) * | 2021-11-11 | 2022-02-25 | 上海金山锦湖日丽塑料有限公司 | Light diffusion flame-retardant PC with excellent humidity-heat aging resistance and preparation method thereof |
| CN116120728A (en) * | 2022-12-13 | 2023-05-16 | 江苏金发科技新材料有限公司 | High-permeability PC composition and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724972A (en) * | 2013-12-31 | 2014-04-16 | 上海长伟锦磁工程塑料有限公司 | Low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103724972A (en) * | 2013-12-31 | 2014-04-16 | 上海长伟锦磁工程塑料有限公司 | Low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940477A (en) * | 2020-12-21 | 2021-06-11 | 胡梦蝶 | Scratch-resistant UV-resistant flame-retardant photodiffusion polycarbonate composition and preparation method thereof |
| CN114085512A (en) * | 2021-11-11 | 2022-02-25 | 上海金山锦湖日丽塑料有限公司 | Light diffusion flame-retardant PC with excellent humidity-heat aging resistance and preparation method thereof |
| CN116120728A (en) * | 2022-12-13 | 2023-05-16 | 江苏金发科技新材料有限公司 | High-permeability PC composition and preparation method and application thereof |
| CN116120728B (en) * | 2022-12-13 | 2024-06-21 | 江苏金发科技新材料有限公司 | High-permeability PC composition and preparation method and application thereof |
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Application publication date: 20191025 |