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Light diffusion PMMA-MABS composite material and preparation method thereof

A technology of composite materials and light diffusing agents, applied in the field of engineering composite materials

Active Publication Date: 2012-04-18
句容市育达实业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the toughness and molding fluidity are poor
There is no report on the combination of PMMA and MABS to form a new composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing light-diffusing PMMA-MABS composite material, the method includes the following steps:

[0028] First bake MABS at 80°C for 2h, PMMA at 80°C for 4h; weigh and mix PMMA resin with MABS resin, compatibilizer, light diffuser, stabilizer, ultraviolet absorber and auxiliaries. Place it in a high-speed mixer for high-speed blending for 3-10 minutes, melt and mix through a twin-screw extruder at 160-230°C, cool the extruded bar to room temperature through a circulating water tank, dry it with a blower, and granulate to obtain PMMA-MABS Composite materials.

[0029] Its components and parts by weight are:

[0030] PMMA resin 80

[0031] MABS resin 16

[0032] Compatibilizer (SAN) 6

[0033] Light diffuser (nano SiO 2 ) 1.5

[0034] Stabilizer (calcium zinc stearate) 3

[0035] Ultraviolet absorber (benzotriazole type) 0.5

[0036] Auxiliary (coupling agent) 0.5

[0037] The weight ratio of each component in MABS is 40% methyl methacrylate, 20% butadiene, 30% styren...

Embodiment 2

[0040] Another method for preparing light-diffusing PMMA-MABS composite material, the method includes the following steps:

[0041] First, bake MABS at 80℃ for 2h, PMMA at 80℃ for 4h; weigh and mix PMMA resin with MABS resin, compatibilizer, light diffuser, stabilizer, ultraviolet absorber and other raw materials in proportion, and place High-speed blending in a high-speed mixer for 3~10 minutes, melting and mixing by a twin-screw extruder at 160~230℃, the extruded bar is cooled to room temperature through a circulating water tank, dried by a blower, and then pelletized to obtain PMMA-MABS composite material .

[0042] Its components and parts by weight are:

[0043] PMMA resin 70

[0044] MABS resin 50

[0045] Compatibilizer (core-shell acrylic copolymer) 8

[0046] Light diffuser (silicone resin particles) 2

[0047] Stabilizer (organic tin) 2

[0048] Ultraviolet absorber (benzotriazole type) 0.5

[0049] The weight ratio of each component in MABS is: methyl methacrylate content 35%, ...

Embodiment 3

[0052] Another method for preparing light-diffusing PMMA-MABS composite material, the method includes the following steps:

[0053] First, bake MABS at 80℃ for 2h, PMMA at 80℃ for 4h; weigh and mix PMMA resin with MABS resin, compatibilizer, light diffuser, stabilizer, ultraviolet absorber and other raw materials in proportion, and place High-speed blending in a high-speed mixer for 3~10 minutes, melting and mixing by a twin-screw extruder at 160~230℃, the extruded bar is cooled to room temperature through a circulating water tank, dried by a blower, and then pelletized to obtain PMMA-MABS composite material .

[0054] Its components and parts by weight are:

[0055] PMMA resin 45

[0056] MABS resin 25

[0057] Compatibilizer (core-shell acrylic copolymer) 8

[0058] Light diffuser (silicone resin particles) 2

[0059] Stabilizer (organic tin) 2

[0060] Ultraviolet absorber (benzotriazole type) 0.5

[0061] The weight ratio of each component in MABS is: methyl methacrylate content 50%, ...

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Abstract

The invention discloses a light diffusion PMMA-MABS composite material and a preparation method thereof. The composite material comprises PMMA resin, MABS resin, compatilizer, light diffusant, stabilizing agent, ultraviolet ray absorber, and auxiliary agents. The preparation method comprises the following steps: baking MABS and PMMA, then mixing PMMA resin, MABS resin, auxiliary agents and other raw materials in proportion, melting and mixing through a double screw extruder at a temperature of 160-230 DEG C, cooling the extruded strips through a circulating water tank to normal temperature, carrying out air drying on the cooled extruded strips, and carrying out granulation. The prepared composite material product has high light transmittance, strong ultraviolet resistance, good dimensional stability and heat stability, and can be widely applied in inner-illuminated billboards, resin window glass, light diffusion plates for display devices, cold light source light diffusion plates and the like.

Description

[0001] technical field [0002] The invention belongs to the field of engineering composite materials, in particular to a light-diffusing PMMA-MABS composite material and a preparation method thereof. Background technique [0003] The light-diffusing composite material has a certain degree of transparency and strong light-scattering properties. It is a very good backlight composite material. It has a large scattering angle, good light guiding performance, and uniform light transmission. It has been widely used as a surface light source in advertising. Signboards, directional signs, display windows, projection walls, wall-mounted uniform light sources and micro-readers, etc. It can also be combined with liquid crystal components to prepare polymer dispersed scattering components, and can be used as a composite material for the backlight source of liquid crystal displays. [0004] Polymethyl methacrylate (PMMA), commonly known as plexiglass, has excellent optical properties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L25/12C08K13/02C08K3/36C08K3/22C08K3/26C08K3/30C08K5/3475
Inventor 鲁平才梁勇
Owner 句容市育达实业投资有限公司
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