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Polymethyl methacrylate composite material and preparation method thereof

A technology of polymethyl methacrylate and composite material, applied in the field of polymethyl methacrylate composite material and its preparation, can solve problems such as photocorrosion, improve dispersibility, avoid photocorrosion phenomenon, and inhibit photooxidative degradation Effect

Inactive Publication Date: 2020-11-20
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a polymethyl methacrylate composite material and its preparation method, aiming to improve the problem that the current polymethyl methacrylate composite material is prone to photocorrosion after adding a toughening agent

Method used

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Examples

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Effect test

preparation example Construction

[0025] In addition, the present invention also provides a method for preparing the above-mentioned polymethyl methacrylate composite material, comprising the following steps: mixing the raw materials and then feeding them into a twin-screw extruder, the twin-screw extruder includes sequentially arranged Eight temperature zones, the temperature of the first zone is 190-200°C, the temperature of the second zone is 210-220°C, the temperature of the third zone is 190-230°C, the temperature of the fourth zone is 220-230°C, the temperature of the fifth zone is 220-230°C, The temperature in the sixth zone is 220-230°C, the temperature in the seventh zone is 215-225°C, the head temperature of the twin-screw extruder is 210-220°C, and the screw speed is 250-450r / min; after melting, extrusion, water cooling, Air-dried and pelletized to obtain a polymethyl methacrylate composite material. The preparation method of the invention is simple, and the prepared composite material has high toug...

Embodiment 1

[0032] The composite material of polymethyl methacrylate of the present embodiment comprises following raw material: 60g polymethyl methacrylate resin, the copolymer of 20g styrene and acrylonitrile, 20g toughening agent, 2g light shielding agent, 0.3g light quenching agent Killing agent, 0.2g ultraviolet absorber, 0.2g antioxidant, 0.2g lubricant. Among them, the toughening agent has a core-shell structure, the core material is butadiene rubber, and the shell material is a copolymer of styrene and acrylonitrile; the light shielding agent includes a shielding layer and a cladding layer coated on the outer surface of the shielding layer. The layer is made of rutile titanium dioxide surface modified by aluminate coupling agent, the coating layer is polymethyl methacrylate; the light quencher is bis(3,5-di-tert-butyl-4-hydroxybenzyl monoethyl phosphonate) nickel, the UV absorber is UV-P (2-(2'-hydroxy-5'-methylphenyl) benzotriazole), the antioxidant is antioxidant 1076 and antiox...

Embodiment 2

[0038] The composite material of polymethyl methacrylate of the present embodiment comprises following raw material: 50g polymethyl methacrylate resin, the copolymer of 25g styrene and acrylonitrile, 25g toughening agent, 1.5g light shielding agent, 0.4g light Quencher, 0.2g UV absorber, 0.2g antioxidant, 0.2g lubricant. Among them, the toughening agent has a core-shell structure, the core material is polysiloxane, and the shell material is polystyrene; the light shielding agent is a mixture of two light shielding agents with a mass ratio of 1:1, the first light shielding agent The shielding layer of the first light shielding agent is made of rutile titanium dioxide surface modified by aluminate coupling agent, and the coating layer is polymethyl methacrylate; the shielding layer of the second light shielding agent is zinc oxide coupled by aluminate Agent surface modified material, the coating layer is polymethacrylate. The photoquencher is bis(3,5-di-tert-butyl-4-hydroxybenz...

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Abstract

The invention discloses a polymethyl methacrylate composite material which comprises the following raw materials in parts by weight; 30 to 80 parts by weight of polymethyl methacrylate resin; 15 to 35parts by weight of a toughening agent; 0.1 to 0.4 part by weight of a light quenching agent; and 0.8 to 2.5 parts by weight of a light shielding agent; the light shielding agent comprises a shieldinglayer and a coating layer coated on the outer surface of the shielding layer, the shielding layer is made of any one of zinc oxide, zinc sulfide, titanium dioxide or barium sulfate which is subjectedto surface modification by a coupling agent, and the coating layer is made of polymethyl methacrylate. The light shielding agent in the composite material provided by the invention enables light notto directly radiate to the interior of the polymer, and enables the interior of the polymer not to be damaged by ultraviolet rays, so that photooxidative degradation is effectively inhibited, and theproblem of photocorrosion after the flexibilizer is added is avoided.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polymethyl methacrylate composite material and a preparation method thereof. Background technique [0002] Polymethyl methacrylate (polymethyl methacrylate, polymethyl methacrylate) is a widely used polymer resin, it has good transparency, molding performance and other characteristics, it is one of the plastics with the best weather resistance, As a decorative material, it is widely used in the fields of household appliances and automobiles; however, its notched impact strength is low and its toughness is poor, and it usually needs to be toughened. The trace chromophore contained in the toughening agent is used in some fields (such as for The hidden window of the air conditioner), there will be a problem of photocorrosion under the illumination of the LED lamp, which affects the performance of the polymethyl methacrylate composite material. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L25/12C08L51/04C08L51/08C08K13/06C08K9/10C08K9/04C08K3/22C08K3/30C08K5/5333C08K5/3475C08K5/132
CPCC08K2003/2241C08K2003/2296C08K2003/3036C08K2003/3045C08L33/12C08L2201/08C08L2205/03C08L2205/06C08L2207/53C08L25/12C08L51/04C08K13/06C08K9/10C08K9/04C08K3/22C08K3/30C08K5/5333C08K5/3475C08L51/08C08K5/132
Inventor 姚其海许明春胡隽隽洪丽
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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