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Heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition and preparation method thereof

A high transmittance, alloy resin technology, applied in the field of polymer materials, can solve the problems of complex equipment, strict process requirements, unfavorable mass production, etc., and achieve the effect of high transmittance

Active Publication Date: 2015-04-08
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to introduce high-pressure inert gas after the methyl acrylate resin is melted, use a high-pressure injection pump to inject from the side feeding port of the extruder, control the gas pressure to be higher than 7.4MPa, and use an extruder with a relatively large length and diameter. The process requirements are extremely strict and the equipment is complex, which is not conducive to mass production

Method used

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  • Heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition and preparation method thereof
  • Heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1 Preparation of heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin of the present invention (1)

[0025] (1) Prepare materials according to the following components and parts by weight:

[0026] 35 parts of polymethyl methacrylate, 30 parts of special heat-resistant agent for PMMA, 20 parts of toughening agent, 15 parts of fluidity regulator, 0.3 parts of antioxidant, 1.5 parts of lubricant; 0.001 parts of coloring agent, 0.5 parts of UV absorber .

[0027] (2) Put the above-mentioned (1) raw materials into the high-speed mixer according to the formula and stir them, and then send them into the twin-screw extruder through the metering device after mixing evenly. Under the conveying, shearing and mixing of materials, the materials are melted and compounded, and then go through the steps of extrusion, drawing, cooling and pelletizing. Among them, the content of maleic anhydride MAH in the PMMA special heat-resistant agent is 20%; the poly...

Embodiment 2

[0028] Embodiment 2 Preparation of heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin of the present invention (two)

[0029] (1) Prepare materials according to the following components and parts by weight:

[0030] 30 parts of polymethyl methacrylate, 60 parts of special heat-resistant agent for PMMA, 10 parts of toughening agent, 0.3 part of antioxidant, 1.5 parts of lubricant; 0.01 part of colorant, 0.5 part of UV absorber.

[0031] (2) Put the above-mentioned (1) raw materials into the high-speed mixer according to the formula and stir them, and then send them into the twin-screw extruder through the metering device after mixing evenly. Under the conveying, shearing and mixing of materials, the materials are melted and compounded, and then go through the steps of extrusion, drawing, cooling and pelletizing. Among them, the content of maleic anhydride MAH in the special heat-resistant agent for PMMA is 5%; the polymethyl methacrylate is Chimei's CM211; ...

Embodiment 3

[0032] Embodiment 3 Preparation of heat-resistant, scratch-resistant and high-transmittance PMMA alloy resin of the present invention (3)

[0033] (1) Prepare materials according to the following components and parts by weight:

[0034] 40 parts of polymethyl methacrylate, 20 parts of special heat-resistant agent for PMMA, 10 parts of toughening agent, 30 parts of fluidity regulator, 0.1 part of antioxidant, 2 parts of lubricant; 0.3 part of free radical scavenger; heat stabilizer 0.2 parts.

[0035] (2) Put the above-mentioned (1) raw materials into the high-speed mixer according to the formula and stir them, and then send them into the twin-screw extruder through the metering device after mixing evenly. Under the conveying, shearing and mixing of materials, the materials are melted and compounded, and then go through the steps of extrusion, drawing, cooling and pelletizing. Among them, the content of maleic anhydride MAH in PMMA special heat-resistant agent is 15%; polymet...

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Abstract

The invention relates to a heat-resistant scratch-resistant high-transmittance PMMA alloy resin composition. The composition is prepared from the following raw materials in parts by weight: 10-94 parts of polymethyl methacrylate, 5-70 parts of special heat-retardant agent for PMMA, 1-45 parts of a flexibilizer, 0-80 parts of a fluidity regulator, 0.1-1 part of an antioxidant, 0.1-2 parts of a lubricating agent and 0.001-1.0 part of an additive, wherein the special heat-retardant agent for PMMA refers to a maleic anhydride-styrene-methyl acrylate terpolymer MAH-St-MMA. The maleic anhydride-styrene-methyl acrylate terpolymer, polymethyl methacrylate and fluidity regulator used in the invention have good compatibility, and high transparency is achieved after blending; and moreover, the flexibilizer with refractive index consistent with that of a blended matrix resin is selected, and by virtue of the conventional double screw molding, the prepared alloy resin has the advantages of high transmittance, scratch resistance and heat resistance.

Description

【Technical field】 [0001] The invention relates to the field of polymer materials, in particular to a heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin composition and a preparation method thereof. 【Background technique】 [0002] Polymethyl methacrylate has excellent scratch resistance and transparency, high dimensional stability, good creep resistance, and can be used as a good optical material. However, its poor impact resistance and heat resistance limit its application in the fields of automobiles, electronic appliances, glass lenses and medical devices. In order to improve the impact and heat resistance of PMMA while maintaining its transparency, researchers have made a lot of attempts. Toughening PMMA directly with acrylate rubber can improve its toughness while retaining transparency, but the heat resistance will be significantly reduced. The result is the same by toughening PMMA / AS, MS, MSAN alloys. Adding conventional heat-resistant agent α-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L35/06C08L25/12C08L83/04C08K5/20C08K5/01C08K5/098
Inventor 刘星周霆毛迪
Owner SHANGHAI KUMHO SUNNY PLASTICS
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