CN113637191A - PMMA-based flame-retardant shading anti-aging master batch, preparation method and PC sheet - Google Patents
PMMA-based flame-retardant shading anti-aging master batch, preparation method and PC sheet Download PDFInfo
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- CN113637191A CN113637191A CN202111070723.5A CN202111070723A CN113637191A CN 113637191 A CN113637191 A CN 113637191A CN 202111070723 A CN202111070723 A CN 202111070723A CN 113637191 A CN113637191 A CN 113637191A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 79
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229920003229 poly(methyl methacrylate) Polymers 0.000 title claims abstract description 50
- 239000004926 polymethyl methacrylate Substances 0.000 title claims abstract description 50
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 44
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 23
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 230000002745 absorbent Effects 0.000 claims abstract description 20
- 239000002250 absorbent Substances 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 239000012745 toughening agent Substances 0.000 claims abstract description 15
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 abstract description 32
- 229920005989 resin Polymers 0.000 abstract description 32
- 238000002834 transmittance Methods 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 4
- 239000013538 functional additive Substances 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000004417 polycarbonate Substances 0.000 description 49
- 238000001125 extrusion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention discloses a PMMA-based flame-retardant shading and anti-aging master batch, a preparation method and a PC sheet, wherein the PMMA-based flame-retardant shading and anti-aging master batch comprises the following components in parts by weight: 15-30 parts of PMMA, 4-6 parts of sulfonate flame retardant, 1-2 parts of anti-dripping agent, 0.5-1.5 parts of antioxidant, 2-3 parts of ultraviolet absorbent, 51-57 parts of titanium dioxide, 6-7 parts of toughening agent and 5.5-8.5 parts of dispersing agent. According to the preparation method, the PMMA resin is used as the matrix resin, so that the master batch can better coat other functional additives, and the additives can be better dispersed in the PC resin; the PC resin has good flame retardant performance by adopting the sulfonate flame retardant and the anti-dripping agent for composite flame retardance, and simultaneously, the damage of harmful substances generated during high-temperature processing and burning to human bodies and the environment is greatly reduced; the light transmittance of the PC resin is reduced by adopting titanium dioxide; the PC resin is modified by adopting the antioxidant and the ultraviolet absorbent, so that the PC resin has good anti-aging performance.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a PMMA-based flame-retardant shading anti-aging master batch, a preparation method and a PC flame-retardant shading anti-aging sheet.
Background
Polycarbonate resins, which are PC resins, are widely used in the fields of LED lighting, electronic accessories, and the like because of their excellent mechanical properties, electrical properties, transparency, and dimensional stability. Although the PC material has many advantages, it still cannot meet some special requirements in the field of electronic lighting, for example, the light transmittance of ordinary PC resin is high, generally 89-92%, and cannot meet the requirement of high light-shielding property of some parts of LED lamp covers. Meanwhile, with the increasing safety awareness of people in recent years, plastic materials in the LED industry gradually have flame retardant requirements, and halogen flame retardants and phosphorus flame retardants are commonly used in the flame retardant modification of the current PC resin. The halogen flame retardant has high flame retardant efficiency, but has large smoke amount during combustion, can release harmful gas and is harmful to the environment and the health of human bodies. The phosphorus flame retardant has high volatility and poor heat resistance, and the temperature of the current-carrying part of the electronic and electric products is high, so that the phosphorus flame retardant cannot meet the use requirement of the electronic and electric products.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a PMMA-based flame-retardant shading anti-aging master batch, a preparation method and a PC sheet.
The invention discloses a PMMA-based flame-retardant shading anti-aging master batch which comprises the following components in parts by weight:
PMMA: 15-30 parts of
Sulfonate flame retardant: 4 to 6 portions of
Anti-dripping agent: 1-2 parts of
Antioxidant: 0.5 to 1.5 portions of
Ultraviolet absorber: 2-3 parts of
Titanium dioxide: 51 to 57 portions
6-7 parts of toughening agent
Dispersing agent: 5.5 to 8.5 portions.
According to one embodiment of the invention, the anti-dripping agent is a modified tetrafluoro anti-dripping agent.
According to one embodiment of the present invention, the antioxidant is antioxidant 627A.
According to an embodiment of the invention, the ultraviolet absorber is UV531 and/or UV 744.
According to an embodiment of the present invention, the toughening agent is MBS 2620.
According to one embodiment of the invention, the dispersant is the dispersant PETS.
The invention also discloses a preparation method of the PMMA-based flame-retardant shading anti-aging master batch, which comprises the following steps:
(1) weighing PMMA, a flame retardant, an anti-dripping agent, an antioxidant, an ultraviolet absorbent, titanium dioxide, a toughening agent and a dispersing agent, and pouring into a mixer for fully mixing to obtain a mixture for later use;
(2) melting, blending, extruding and granulating the mixture by using a screw extruder.
According to an embodiment of the invention, in the step (2), the screw extruder is a twin-screw extruder, and the rotation speed of the screw extruder is 370-390 r/min.
According to one embodiment of the present invention, in step (2), the temperatures of the zones of the screw extruder are: the temperature of the first zone is 200-210 ℃, the temperature of the second zone is 200-210 ℃, the temperature of the third zone is 210-220 ℃, the temperature of the fourth zone is 210-220 ℃, the temperature of the fifth zone is 210-220 ℃, the temperature of the sixth zone is 210-220 ℃, the temperature of the seventh zone is 220-230 ℃, the temperature of the eighth zone is 220-230 ℃ and the temperature of the head is 220-230 ℃.
The invention also discloses a PC flame-retardant shading anti-aging sheet which comprises the following components in parts by weight:
PMMA-based flame-retardant shading anti-aging master batch: 10-20 parts of
PC master batch: 80-90 parts.
The beneficial effect of this application lies in: by adopting PMMA resin as matrix resin, the master batch can better coat other functional additives, and simultaneously the additives can be better dispersed in PC resin; the PC resin has good flame retardant performance by adopting the sulfonate flame retardant and the anti-dripping agent for composite flame retardance, and simultaneously, the damage of harmful substances generated during high-temperature processing and burning to human bodies and the environment is greatly reduced; the light transmittance of the PC resin is reduced by adopting titanium dioxide; the PC resin is modified by adopting the antioxidant and the ultraviolet absorbent, so that the PC resin has good anti-aging performance.
Detailed Description
To further understand the contents, features and effects of the present invention, the following examples are illustrated:
the PMMA-based flame-retardant shading anti-aging master batch comprises the following components by weight: 15-30 parts of PMMA, 4-6 parts of sulfonate flame retardant, 1-2 parts of anti-dripping agent, 0.5-1.5 parts of antioxidant, 2-3 parts of ultraviolet absorbent, 51-57 parts of titanium dioxide, 6-7 parts of toughening agent and 5.5-8.5 parts of dispersing agent.
Preferably, the PMMA is soft PMMA, the sulfonate flame retardant is a flame retardant HES-FR of Arichem company, the anti-dripping agent is a modified tetrafluoro anti-dripping agent AD541, the antioxidant is an antioxidant 627A, the ultraviolet absorbent is UV531 and/or UV744, the flexibilizer is MBS2620 of Rohm and Haas company, and the dispersant is a dispersant PETS.
A preparation method of PMMA-based flame-retardant shading anti-aging master batch comprises the following steps:
(1) weighing PMMA, a flame retardant, an anti-dripping agent, an antioxidant, an ultraviolet absorbent, titanium dioxide, a toughening agent and a dispersing agent, and pouring into a mixer for fully mixing to obtain a mixture for later use;
(2) melting, blending, extruding and granulating the mixture by using a screw extruder.
Preferably, in the step (2), the screw extruder is a twin-screw extruder, the rotating speed of the screw extruder is 370-390 r/min, and the temperature of each zone of the screw extruder is as follows: the temperature of the first zone is 200-210 ℃, the temperature of the second zone is 200-210 ℃, the temperature of the third zone is 210-220 ℃, the temperature of the fourth zone is 210-220 ℃, the temperature of the fifth zone is 210-220 ℃, the temperature of the sixth zone is 210-220 ℃, the temperature of the seventh zone is 220-230 ℃, the temperature of the eighth zone is 220-230 ℃ and the temperature of the head is 220-230 ℃.
The PC flame-retardant shading anti-aging sheet comprises the following components in parts by weight:
10-20 parts of PMMA-based flame-retardant shading anti-aging master batch and 80-90 parts of PC master batch. And pouring the weighed PMMA-based flame-retardant shading anti-aging master batches and the weighed PC master batches into a mixer for fully mixing, and preparing the PC flame-retardant shading anti-aging sheet by adopting the prior art.
By adopting PMMA resin as matrix resin, the master batch can better coat other functional additives, and simultaneously the additives can be better dispersed in PC resin; the PC resin has good flame retardant performance by adopting the sulfonate flame retardant and the anti-dripping agent for composite flame retardance, and simultaneously, the damage of harmful substances generated during high-temperature processing and burning to human bodies and the environment is greatly reduced; the light transmittance of the PC resin is reduced by adopting titanium dioxide; the PC resin is modified by adopting the antioxidant and the ultraviolet absorbent, so that the PC resin has good anti-aging performance.
In order that the invention may be better understood, the invention will now be further described with reference to the following examples.
Example 1
Weighing 15 parts of soft PMMA, 6 parts of a flame retardant HES-FR, 2 parts of a modified tetrafluoro anti-dripping agent AD541, 1.5 parts of an antioxidant 627A, 3 parts of an ultraviolet absorbent UV531, 57 parts of titanium dioxide, 7 parts of a toughening agent MBS2620 and 8.5 parts of a dispersing agent PETS, pouring into a mixer for fully mixing to obtain a mixture, and melting, blending, extruding and granulating the mixture by using a double-screw extruder. The rotating speed of the double-screw extruder is 380r/min, and the temperature of each area of the double-screw extruder is as follows: the temperature of the first zone is 200 ℃, the temperature of the second zone is 200 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 210 ℃, the temperature of the fifth zone is 210 ℃, the temperature of the sixth zone is 210 ℃, the temperature of the seventh zone is 220 ℃, the temperature of the eighth zone is 220 ℃ and the temperature of the head is 220 ℃.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 1 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A1 is prepared by an extrusion molding method.
Example 2
Weighing 17 parts of soft PMMA, 6 parts of a flame retardant HES-FR, 2 parts of a modified tetrafluoro anti-dripping agent AD541, 1.5 parts of an antioxidant 627A, 3 parts of an ultraviolet absorbent UV744, 55 parts of titanium dioxide, 7 parts of a toughening agent MBS2620 and 8.5 parts of a dispersant PETS, and pouring the materials into a mixer for fully mixing to obtain a mixture, wherein the other conditions are the same as those in the example 1.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 2 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A2 is prepared by an extrusion molding method.
Example 3
Weighing 20 parts of soft PMMA, 5 parts of a flame retardant HES-FR, 1 part of a modified tetrafluoro anti-dripping agent AD541, 1.5 parts of an antioxidant 627A, 1.5 parts of an ultraviolet absorbent UV531, 1.5 parts of an ultraviolet absorbent UV744, 55 parts of titanium dioxide, 7 parts of a toughening agent MBS2620 and 7.5 parts of a dispersant PETS, and pouring into a mixer for fully mixing to obtain a mixture, wherein the other conditions are the same as those in the example 1.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 3 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A3 is prepared by an extrusion molding method.
Example 4
22 parts of soft PMMA, 5 parts of a flame retardant HES-FR, 1 part of a modified tetrafluoro anti-dripping agent AD541, 1.5 parts of an antioxidant 627A, 1.5 parts of an ultraviolet absorbent UV531, 1.5 parts of an ultraviolet absorbent UV744, 53 parts of titanium dioxide, 7 parts of a toughening agent MBS2620 and 7.5 parts of a dispersant PETS are weighed and poured into a mixer to be fully mixed to obtain a mixture, and other conditions are the same as those in the embodiment 1.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 4 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A4 is prepared by an extrusion molding method.
Example 5
25 parts of soft PMMA, 4 parts of flame retardant HES-FR, 1 part of modified tetrafluoro anti-dripping agent AD541, 1 part of antioxidant 627A, 1.5 parts of ultraviolet absorbent UV531, 1.5 parts of ultraviolet absorbent UV744, 53 parts of titanium dioxide, 6.5 parts of toughening agent MBS2620 and 6.5 parts of dispersant PETS are weighed and poured into a mixer to be fully mixed to obtain a mixture, and other conditions are the same as those in the embodiment 1.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 5 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A5 is prepared by an extrusion molding method.
Example 6
27 parts of soft PMMA, 4 parts of flame retardant HES-FR, 1 part of modified tetrafluoro anti-dripping agent AD541, 1 part of antioxidant 627A, 1.5 parts of ultraviolet absorbent UV531, 1.5 parts of ultraviolet absorbent UV744, 51 parts of titanium dioxide, 6.5 parts of toughening agent MBS2620 and 6.5 parts of dispersant PETS are weighed and poured into a mixer to be fully mixed to obtain a mixture, and other conditions are the same as those in the embodiment 1.
The PMMA-based flame-retardant shading and aging-resistant master batch obtained in the example 6 is blended with the PC master batch in a proportion of 14%, and then the PC flame-retardant shading and aging-resistant sheet A6 is prepared by an extrusion molding method.
Comparative example 1
The PC master batch is extruded to prepare a PC sheet D1.
The PC flame-retardant shading and ageing-resistant sheets A1-A6 prepared in examples 1-6 and the PC sheet D1 prepared in comparative example 1 are tested, xenon lamp exposure test is carried out according to GB/T16422.2-2014, and the yellow index is measured according to the standard GB/T2409-. The test results were as follows:
the experimental results in the table above show that, compared with the common PC sheet D1, the flame retardant grade of the PC flame-retardant shading aging-resistant sheet a1-a6 is significantly improved, and the light transmittance and the yellowing index Δ YI are significantly reduced, that is, the flame retardant property, the shading property and the aging resistance of the PC sheet added with the PMMA-based flame-retardant shading aging-resistant master batch are significantly improved, so that the PC flame-retardant shading aging-resistant sheet can meet the use requirements of the plastic material in the LED industry on the flame retardant property, the shading property and the aging resistance.
To sum up: when the PMMA-based flame-retardant shading anti-aging master batch is applied to PC resin, the PMMA resin is used as matrix resin, so that the master batch can better coat other functional additives and can also better disperse the additives in the PC resin; the PC resin has good flame retardant performance by adopting the sulfonate flame retardant and the anti-dripping agent for composite flame retardance, and simultaneously, the damage of harmful substances generated during high-temperature processing and burning to human bodies and the environment is greatly reduced; the light transmittance of the PC resin is reduced by adopting titanium dioxide; the PC resin is modified by adopting the antioxidant and the ultraviolet absorbent, so that the PC resin has good anti-aging performance.
The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The PMMA-based flame-retardant shading anti-aging master batch is characterized by comprising the following components in parts by weight:
PMMA: 15-30 parts of
Sulfonate flame retardant: 4 to 6 portions of
Anti-dripping agent: 1-2 parts of
Antioxidant: 0.5 to 1.5 portions of
Ultraviolet absorber: 2-3 parts of
Titanium dioxide: 51 to 57 portions
6-7 parts of toughening agent
Dispersing agent: 5.5 to 8.5 portions.
2. The PMMA-based flame-retardant, light-shielding and aging-resistant master batch of claim 1, wherein the anti-dripping agent is a modified tetrafluoro anti-dripping agent.
3. The PMMA-based flame-retardant light-shielding aging-resistant master batch of claim 1, wherein the antioxidant is antioxidant 627A.
4. The PMMA-based flame-retardant shading anti-aging master batch of claim 1, wherein the ultraviolet absorber is UV531 and/or UV 744.
5. The PMMA-based flame-retardant shading anti-aging master batch of claim 1, wherein the toughening agent is MBS 2620.
6. The PMMA-based flame-retardant shading anti-aging master batch of claim 1, wherein the dispersant is PETS.
7. The preparation method of the PMMA-based flame-retardant, light-shielding and anti-aging master batch according to any one of claims 1 to 6, which is characterized by comprising the following steps:
(1) weighing PMMA, a flame retardant, an anti-dripping agent, an antioxidant, an ultraviolet absorbent, titanium dioxide, a toughening agent and a dispersing agent, and pouring into a mixer for fully mixing to obtain a mixture for later use;
(2) melting, blending, extruding and granulating the mixture by using a screw extruder.
8. The preparation method of the PMMA-based flame-retardant shading anti-aging masterbatch according to claim 7, wherein in the step (2), the screw extruder is a twin-screw extruder, and the rotating speed of the screw extruder is 370-390 r/min.
9. The preparation method of the PMMA-based flame-retardant, light-shielding and anti-aging masterbatch according to claim 7, wherein in the step (2), the temperature of each zone of the screw extruder is as follows: the temperature of the first zone is 200-210 ℃, the temperature of the second zone is 200-210 ℃, the temperature of the third zone is 210-220 ℃, the temperature of the fourth zone is 210-220 ℃, the temperature of the fifth zone is 210-220 ℃, the temperature of the sixth zone is 210-220 ℃, the temperature of the seventh zone is 220-230 ℃, the temperature of the eighth zone is 220-230 ℃ and the temperature of the head is 220-230 ℃.
10. The PC flame-retardant shading and aging-resistant sheet material as claimed in any one of claims 1 to 9, which comprises the following components in parts by weight:
PMMA-based flame-retardant shading anti-aging master batch: 10-20 parts of
PC master batch: 80-90 parts.
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