CN104962022B - A kind of heat-resisting scratch-resistant high transmittance PMMA alloy resin and preparation method thereof - Google Patents
A kind of heat-resisting scratch-resistant high transmittance PMMA alloy resin and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of heat-resisting scratch-resistant high transmittance PMMA alloy resin combination, described PMMA alloy resin is made up of the raw material of following weight portion：10 95 parts of polymethyl methacrylate, 5 90 parts of the special heat-resistant agents of PMMA, the special heat-resistant agents of described PMMA are N phenyl maleimide styrene methyl methacrylate terpolymers P (NPMI St MMA)；The present invention also provides the preparation method of above-mentioned composition.The advantage is that：N phenyl maleimide styrene methyl methacrylate terpolymers that the present invention is used have good compatibility with polymethyl methacrylate, and transparency is high after blending, and obtained alloy resin has the advantages that transmitance high, scratch-resistant, heat-resisting；The PMMA alloy resin combination can further include the processing aids such as impact modifier, fluidity regulator, lubricant, releasing agent, can prepare the PMMA alloy resin combination of various uses；The preparation technology of PMMA alloy resin of the present invention is relatively easy, is conducive to a large amount of productions.
Description
Technical field
It is a kind of heat-resisting scratch-resistant high transmittance PMMA alloy tree specifically the present invention relates to polymeric material field
Fat and preparation method thereof.
Background technology
Polymethyl methacrylate has excellent scraping and wiping resistance performance and transparency, and dimensional stability is high, and creep resistant is good,
Can be as good optical material.But its impact resistance and heat resistance be not good limit its automobile, electronic apparatus,
The application in the field such as glass lens and medical apparatus.In order to simultaneously improve PMMA impact and resistance to heat energy and keep its transparency,
Researchers have done substantial amounts of trial.Can directly be improved on the basis of the transparency is retained with ACM toughened polymethyl methacrylate (PMMA)
Its toughness, but heat resistance can be decreased obviously.It is also same by toughened polymethyl methacrylate (PMMA)/AS, MS, MSAN alloy result.Addition is conventional
Heat-resistant agent α methyl-styrenes, N-phenylmaleimide-styrol copolymer, N-phenylmaleimide-styrene-propene
Lonitrile copolymer can have a strong impact on its transparency.The impact and heat-resisting raising of PMMA are realized by adding PC can simultaneously keep its transparency
Although causing extensive concern, when current problems faced is high-temperature blending, both poor compatibilities mix uneven, cause
Final product is opaque.The PC/PMMA alloys that conventional blending technology is made, when PMMA additions exceed certain proportion (
As more than 3%) when, product surface is the effect that hair mist pearly-lustre occurs, if PMMA contents continue to increase, product is opaque.
It is still material circle a great problem to prepare transparent PMMA/PC alloys.
A kind of method for preparing transparent PMMA/PC alloys is provided in Chinese patent literature CN201410328787.4.But
The method need to be passed through high-pressure inert gas after methacrylate resin melting, feed mouth from the side of extruder using high pressure syringe pump and note
Enter, control gas pressure is higher than 7.4MPa, and using the larger extruder of draw ratio, in technological requirement and its strictly, equipment is multiple
It is miscellaneous, it is unfavorable for a large amount of productions.
The content of the invention
The purpose of the present invention is directed to deficiency of the prior art, there is provided a kind of heat-resisting scratch-resistant high transmittance PMMA alloy
Resin combination.
The another purpose of the present invention is to provide the preparation method of above-mentioned composition.
To achieve the above object, the present invention is adopted the technical scheme that：
A kind of heat-resisting scratch-resistant high transmittance PMMA alloy resin combination, described composition by following weight portion original
Material is made：Polymethyl methacrylate 10-95 parts, special heat-resistant agent 5-90 parts of PMMA.
Described polymethyl methacrylate weight average molecular weight Mw is 40000-100000g/mol；Described PMMA is special
Heat-resistant agent is N-phenylmaleimide-styrene methyl methacrylate terpolymer P (NPMI-St-MMA), wherein N-
The content of phenyl maleimide is 5~40%, and weight average molecular weight is 40000-300000g/mol.
Described heat-resisting scratch-resistant high transmittance PMMA alloy resin combination is described also including processing aid 0.1-50 parts
Processing aid be selected from impact modifier, fluidity regulator, antioxidant, lubricant, light stabilizer, heat stabilizer, coloring
One or more in agent, releasing agent, antistatic additive.
Described anti-impact modifier is selected from one kind or its mixture in line style toughener or core-shell type toughener；It is described
Fluidity regulator be selected from acrylonitritrile-styrene resin AS, acrylic ester-acrylonitrile-styrol copolymer MSAN, propylene
One or more of acid esters-styrol copolymer MS；Described antioxidant is selected from aromatic amine antioxidant, Hinered phenols antioxygen
One kind in agent, auxiliary antioxidant；Described lubricant is selected from silicone oil, White Mineral Oil, fatty acid amide, barium stearate, stearic acid
Magnesium, paraffin, Tissuemat E, ethylene bis stearic acid amide, ethylene-vinyl acetate copolymer, pentaerythritol stearate, ethene-
One or more in acrylic copolymer, aromatic phosphate acid ester；Described light stabilizer is selected from benzophenone UV absorbents, benzene
And one or more in triazole type UV absorbents, triazines UV absorbents, hindered amine light stabilizer；Described heat stabilizer
Selected from metal soap thermal stabilizerses, organic tin heat stabilizer, rare-earth stabilizer, phosphite ester stabilizer, epoxide
One or more；Described colouring agent is selected from dyestuff based colorant, organic pigment, inorganic pigment, fluorescent whitening agent
Plant or several.
The line style toughener is selected from butadiene rubber, EP rubbers, EPDM, SB, benzene second
Alkene-BS, styrene-isoprene copolymer, styrene-isoprene-styrene copolymer and its
One kind or its mixture in selective hydration product, or acrylic acid-silicone rubber kinds toughener, ethylene-methyl acrylate, second
Alkene-butyl acrylate, acrylonitrile-butadiene-styrene copolymer toughener, acrylonitrile-butadiene-acrylate copolymer or
One kind or its mixture in MBS；Described core-shell type toughener core part
It is polybutadiene rubber and its copolymer, or lactoprene and its copolymer, described core-shell type toughener shell portion
It is divided into polyacrylate and its copolymer or SAN, described core-shell type toughener also includes above-mentioned increasing
Tough dose of various function dough products.
To realize above-mentioned second purpose, the present invention is adopted the technical scheme that：
A kind of preparation method of heat-resisting scratch-resistant high transmittance PMMA alloy resin combination, it is characterised in that including with
Lower step：
(1) got the raw materials ready according to the component and weight portion；
(2) above-mentioned raw materials are placed in high-speed mixer by formula and are stirred, through the double spiral shells of metering device feeding after being well mixed
In bar extruder, under conveying in screw rod, shearing and mixing, by material melting, compound, then extruded, tie rod, cool down, cut
Grain step, obtains final product；Wherein extrusion temperature is 200 DEG C -270 DEG C.
The invention has the advantages that：
1. the present invention is used N-phenylmaleimide-styrene methyl methacrylate terpolymer and poly- first
Base methyl acrylate has good compatibility, and transparency is high after blending, and obtained alloy resin has that transmitance is high, scratch resistance
Wiping, heat-resisting advantage.
2. PMMA alloy resin combination of the invention can further include impact modifier, fluidity regulator, lubrication
The processing aids such as agent, releasing agent, can prepare the PMMA alloy resin combination of various uses.
3. the preparation technology of PMMA alloy resin of the present invention is relatively easy, is conducive to a large amount of productions.
Specific embodiment
A kind of preparation () of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 1
Raw material：95 parts of polymethyl methacrylate, 5 parts of the special heat-resistant agents of PMMA.Wherein, the special heat-resistant agents of described PMMA
The NPMI contents of middle P (NPMI-St-MMA) are 5%.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 200 DEG C.
A kind of preparation (two) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 2
Raw material：10 parts of polymethyl methacrylate, 90 parts of the special heat-resistant agents of PMMA.Wherein, described PMMA is special heat-resisting
The NPMI contents of P (NPMI-St-MMA) are 20% in agent.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
A kind of preparation (three) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 3
Raw material：70 parts of polymethyl methacrylate, 30 parts of the special heat-resistant agents of PMMA, 20 parts of flowing regulator, lubricant 2
Part.Wherein, the NPMI contents of P (NPMI-St-MMA) are 40% in the special heat-resistant agents of described PMMA.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 270 DEG C.
A kind of preparation (four) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 4
Raw material：70 parts of polymethyl methacrylate, 20 parts of the special heat-resistant agents of PMMA, 20 parts of impact modifier, lubricant 2
Part, 0.5 part of heat stabilizer.Wherein, the NPMI contents of P (NPMI-St-MMA) are 20% in the special heat-resistant agents of described PMMA.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 250 DEG C.
A kind of preparation (five) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 5
Raw material：65 parts of polymethyl methacrylate, 25 parts of the special heat-resistant agents of PMMA, 2 parts of lubricant, 1 part of antioxidant, light is steady
Determine 0.5 part of agent, 0.5 part of colouring agent.Wherein, the NPMI contents of P (NPMI-St-MMA) are in the special heat-resistant agents of described PMMA
20%.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 220 DEG C.
A kind of preparation (six) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 6
Raw material：35 parts of polymethyl methacrylate, 65 parts of the special heat-resistant agents of PMMA, 10 parts of impact modifier, lubricant 0.5
Part, 0.5 part of antioxidant.Wherein, the NPMI contents of P (NPMI-St-MMA) are 10% in the special heat-resistant agents of described PMMA.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 250 DEG C.
A kind of preparation (seven) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 7
Raw material：80 parts of polymethyl methacrylate, 20 parts of the special heat-resistant agents of PMMA, 2 parts of lubricant, 0.5 part of light stabilizer,
0.5 part of heat stabilizer, 0.1 part of colouring agent.Wherein, in the special heat-resistant agents of described PMMA P (NPMI-St-MMA) NPMI contents
It is 20%.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
A kind of preparation (eight) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 8
Raw material：80 parts of polymethyl methacrylate, 20 parts of the special heat-resistant agents of PMMA, 10 parts of fluidity regulator, light stabilization
2 parts of agent, 0.5 part of colouring agent.Wherein, the NPMI contents of P (NPMI-St-MMA) are 30% in the special heat-resistant agents of described PMMA.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
A kind of preparation (nine) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 9
Raw material：50 parts of polymethyl methacrylate, 30 parts of the special heat-resistant agents of PMMA, 10 parts of impact modifier, antioxidant 1
Part, 0.5 part of heat stabilizer.Wherein, the NPMI contents of P (NPMI-St-MMA) are 25% in the special heat-resistant agents of described PMMA.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
A kind of preparation (ten) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 10
Raw material：60 parts of polymethyl methacrylate, 20 parts of the special heat-resistant agents of PMMA, 10 parts of fluidity regulator, lubricant 2
Part, 1 part of antioxidant, 0.5 part of light stabilizer, 0.5 part of heat stabilizer, 0.1 part of colouring agent.Wherein, described PMMA is special heat-resisting
The NPMI contents of P (NPMI-St-MMA) are 20% in agent.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
A kind of preparation (11) of heat-resisting scratch-resistant high transmittance PMMA alloy resin of the present invention of embodiment 11
Raw material：65 parts of polymethyl methacrylate, 15 parts of the special heat-resistant agents of PMMA, 20 parts of fluidity regulator, lubricant 1
Part, 1 part of antioxidant, 0.5 part of light stabilizer, 0.5 part of heat stabilizer, 0.1 part of colouring agent.Wherein, described PMMA is special heat-resisting
The NPMI contents of P (NPMI-St-MMA) are 10% in agent.
Preparation technology：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, sent through metering device after being well mixed
It is then extruded, tie rod, cold by material melting, compound under the conveying, shearing and mixing in screw rod in entering double screw extruder
But, pelletizing step, obtains final product.Wherein extrusion temperature is 240 DEG C.
It should be noted that in embodiment 1-11, the raw material of use：PMMA is the strange beautiful CM207G in Taiwan；PMMA is special
It is N-phenylmaleimide-styrene methyl methacrylate terpolymer P (NPMI-St-MMA) with heat-resistant agent, its
In, the content of NPMI is 5~40% in P (NPMI-St-MMA), and weight average molecular weight is 40000-300000g/mol；What is used is anti-
Impact modifier is the EM500 of LG；Described fluidity regulator is the acrylonitritrile-styrene resin of South Korea's brocade lake petrochemical industry
SAN320 resins；The antioxidant for using is antioxidant 1010 and the mixture of irgasfos 168；Described lubricant is pentaerythrite
Stearate series lubricant agent；Described light stabilizer is benzotriazole uv absorbers UV234；Described heat stabilizer is gold
Category soaps；Described colouring agent is fluorescent whitening agent 184.
The performance test of the PMMA alloy resin of the invention of embodiment 12
First, experiment packet
This test is divided into 8 groups, wherein 5 groups of test group, 3 groups of control group.
Test group is respectively adopted the PMMA alloy resin obtained by embodiment 1,3,6,9,10.
Control group 1：Following raw material are weighed by weight：PMMA95 parts, 5 parts of PC；It is subsequently placed in high-speed mixer and mixes
Close, after being well mixed through metering device feeding double screw extruder in, under conveying in screw rod, shearing and mixing, material is melted
Change, compound, then extruded, tie rod, cooling, pelletizing step, PMMA alloy resin as a control group 1 is obtained.
Control group 2：Following raw material are weighed by weight：PMMA95 parts, 5 parts of MS-NI；It is subsequently placed in high-speed mixer
Middle mixing, after being well mixed through metering device feeding double screw extruder in, under conveying in screw rod, shearing and mixing, by thing
Material fusing, compound, then extruded, tie rod, cooling, pelletizing step, are obtained PMMA alloy resin as a control group 2.
Control group 3：PMMA100 parts is weighed by weight, mixing in high-speed mixer is subsequently placed in, through meter after being well mixed
In amount device feeding double screw extruder, under the conveying, shearing and mixing in screw rod, by material melting, it is combined, then through squeezing
Go out, tie rod, cooling, pelletizing step, PMMA alloy resin as a control group 3 is obtained.
It should be noted that the PC that control group 1-3 is used is Supreme Being people L1225WS, N-phenylmaleimide-styrene is common
Polymers is electrochemical MS-NI.
2nd, method of testing
The alloy resin of each group is vacuum dried more than 12h at 80 DEG C, its physical property is then tested.
1. transmission measurement
The particle that will be prepared be molded at a temperature of 250 DEG C thickness be 3mm bloom colour table, carry out transmission measurement and
Hardness test.The specific method of testing of transmitance is shown in ASTM D1003-2007 transparent plastics light transmittances and haze test method.
2. pencil hardness test
The particle that will be prepared is molded the bloom colour table that thickness is 3mm at a temperature of 250 DEG C, carries out hardness test.Lead
Hardness test is tested according to GB/T 6739-1996, counterweight weight 500g.
3. heat resisting temperature test
Heat resisting temperature is tested according to the method for testing of ASTMD1525-09 plastics dimension card (vicat) softening temperature, is surveyed
Strip part is 5kg, 50 DEG C/h.
3rd, test result
The test group 1-5 and test result of the physical property of resin is shown in Table 1 prepared by control group 1-3.
The test group 1-5 of table 1 and control group 1-3 the performance test results
As shown in Table 1, the present invention uses the special heat-resistant agent N-phenylmaleimide-styrene-methyls of PMMA
Methyl acrylate terpolymer P (NPMI-St-MMA) can prepare the PMMA alloy resin of the high grade of transparency, while also having outstanding
Scratch resistance, heat resisting temperature is higher.The PMMA alloy resin prepared using PMMA and PC or MS-NI then has obvious pearly-lustre
Phenomenon, although single resin prepared using PMMA has high transmission rate, its heat resisting temperature is relatively low.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, on the premise of the inventive method is not departed from, can also make some improvement and supplement, and these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (2)
1. a kind of heat-resisting scratch-resistant high transmittance PMMA alloy resin combination, it is characterised in that described composition is by following
The raw material of weight portion is made：
70 parts of polymethyl methacrylate,
30 parts of the special heat-resistant agents of PMMA,
20 parts of fluidity regulator,
2 parts of lubricant；
Described polymethyl methacrylate is the strange beautiful CM207G in Taiwan；
The special heat-resistant agents of described PMMA are N-phenylmaleimide-styrene methyl methacrylate terpolymer P
(NPMI-St-MMA), wherein the content of N-phenylmaleimide is 40%, the Weight-average molecular of the special heat-resistant agents of described PMMA
It is 40000-300000g/mol to measure；
Described fluidity regulator is the acrylonitritrile-styrene resin SAN320 resins of South Korea's brocade lake petrochemical industry；
Described lubricant is pentaerythritol stearate series lubricant agent；
The preparation method of described composition is：Above-mentioned raw materials are placed in high-speed mixer by formula and are mixed, after being well mixed
In through metering device feeding double screw extruder, under the conveying, shearing and mixing in screw rod, by material melting, compound, Ran Houjing
Extrusion, tie rod, cooling, pelletizing step, obtain final product, and wherein extrusion temperature is 270 DEG C.
2. the preparation method of heat-resisting scratch-resistant high transmittance PMMA alloy resin according to claim 1, it is characterised in that
Comprise the following steps：
(1) got the raw materials ready according to the component and weight portion；
(2) above-mentioned raw materials are placed in high-speed mixer by formula and are stirred, squeezed through metering device feeding twin-screw after being well mixed
Go out in machine, under the conveying, shearing and mixing in screw rod, by material melting, compound, then extruded, tie rod, cooling, pelletizing step
Suddenly, obtain final product；Wherein extrusion temperature is 270 DEG C.
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| CN106009453A (en) * | 2016-08-16 | 2016-10-12 | 苏州市云林电子有限公司 | Thermal-stability modified PMMA rubber |
| CN107118482A (en) * | 2017-05-03 | 2017-09-01 | 阜南县邰氏宇崴运动器材有限公司 | It is a kind of for elastomeric material of roller-skates pulley and preparation method thereof |
| RO132922B1 (en) | 2017-10-23 | 2022-06-30 | Institutul Naţional De Cercetare- Dezvoltare Pentru Chimie Şi Petrochimie - Icechim | Concentrate for enhancing polymethylmethacrylate resistance to scratching and process for preparing the same |
| CN107936436A (en) * | 2017-12-22 | 2018-04-20 | 鄢海军 | A kind of PMMA materials of scratch-resistant and preparation method thereof |
| CN108822498A (en) * | 2018-07-11 | 2018-11-16 | 望江县天长光学仪器有限公司 | A kind of polymethyl methacrylate lens material |
| CN109942977A (en) * | 2019-04-18 | 2019-06-28 | 金旸（厦门）新材料科技有限公司 | A kind of scratch-resistant transparent composite and preparation method thereof |
| KR102417772B1 (en) * | 2019-10-31 | 2022-07-05 | 롯데케미칼 주식회사 | Thermoplastic resin composition and article manufactured using the same |
| CN111592730A (en) * | 2020-06-17 | 2020-08-28 | 湖北合聚高分子材料有限公司 | High-gloss heat-resistant scratch-resistant weather-resistant PMMA/ASA alloy resin material and preparation method thereof |
| CN111690222B (en) * | 2020-07-09 | 2022-05-10 | 东莞市奥能工程塑料有限公司 | High-heat-resistance high-brightness PMMA/ASA alloy material and preparation method and application thereof |
| CN113943469A (en) * | 2020-07-17 | 2022-01-18 | 中国石油天然气股份有限公司 | Modified polymethyl methacrylate resin, preparation method thereof and composition for preparation |
| CN112778674B (en) * | 2020-12-29 | 2023-05-09 | 成都金发科技新材料有限公司 | Toughened high-hardness PMMA composite material and preparation method and application thereof |
| CN113337109B (en) * | 2021-06-07 | 2022-07-08 | 上海锦湖日丽塑料有限公司 | Reinforced polyamide composition with high laser transmittance and low water absorption performance as well as preparation method and application thereof |
| CN113480686A (en) * | 2021-07-15 | 2021-10-08 | 滁州杰事杰新材料有限公司 | Polymethyl methacrylate composite material and preparation method thereof |
| CN113683852B (en) * | 2021-08-23 | 2022-08-19 | 金发科技股份有限公司 | PMMA resin material, optical product, preparation method of optical product and application of optical product |
| CN114927279B (en) * | 2022-06-01 | 2023-03-31 | 湖南湘江电缆有限公司 | High-temperature-resistant waterproof environment-friendly cable |
| CN117445507A (en) * | 2023-10-25 | 2024-01-26 | 佛山市达孚新材料有限公司 | Heat-resistant toughened PMMA film and preparation method thereof |
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| CN104497461A (en) * | 2014-12-15 | 2015-04-08 | 上海锦湖日丽塑料有限公司 | Heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition and preparation method thereof |
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| CN104497461A (en) * | 2014-12-15 | 2015-04-08 | 上海锦湖日丽塑料有限公司 | Heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition and preparation method thereof |
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