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Heat-resisting, scraping-resisting and high-transmittance PMMA alloy resin 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 simple preparation process, high transparency, and favorable mass production

Active Publication Date: 2015-10-07
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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-resisting, scraping-resisting and high-transmittance PMMA alloy resin and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 Preparation of a heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin of the present invention (1)

[0021] Raw materials: 95 parts of polymethyl methacrylate, 5 parts of special heat-resistant agent for PMMA. Wherein, the NPMI content of P(NPMI-St-MMA) in the special heat-resistant agent for PMMA is 5%.

[0022] Preparation process: Put the above-mentioned raw materials in a high-speed mixer according to the formula and mix them evenly, and then send them into the twin-screw extruder through a metering device. Under the conveying, shearing and mixing of the screws, the materials are melted and compounded, and then After the steps of extrusion, drawing, cooling and pelletizing, it can be obtained. Wherein the extrusion temperature is 200°C.

Embodiment 2

[0023] Embodiment 2 Preparation of a heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin of the present invention (2)

[0024] Raw materials: 10 parts of polymethyl methacrylate, 90 parts of special heat-resistant agent for PMMA. Wherein, the NPMI content of P(NPMI-St-MMA) in the special heat-resistant agent for PMMA is 20%.

[0025] Preparation process: Put the above-mentioned raw materials in a high-speed mixer according to the formula and mix them evenly, and then send them into the twin-screw extruder through a metering device. Under the conveying, shearing and mixing of the screws, the materials are melted and compounded, and then After the steps of extrusion, drawing, cooling and pelletizing, it can be obtained. Wherein the extrusion temperature is 240°C.

Embodiment 3

[0026] Example 3 Preparation of a heat-resistant, scratch-resistant, high-transmittance PMMA alloy resin of the present invention (3)

[0027] Raw materials: 70 parts of polymethyl methacrylate, 30 parts of special heat-resistant agent for PMMA, 20 parts of flow regulator, and 2 parts of lubricant. Wherein, the NPMI content of P(NPMI-St-MMA) in the special heat-resistant agent for PMMA is 40%.

[0028] Preparation process: Put the above-mentioned raw materials in a high-speed mixer according to the formula and mix them evenly, and then send them into the twin-screw extruder through a metering device. Under the conveying, shearing and mixing of the screws, the materials are melted and compounded, and then After the steps of extrusion, drawing, cooling and pelletizing, it can be obtained. Wherein the extrusion temperature is 270°C.

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Abstract

The invention relates to a heat-resisting, scraping-resisting and high-transmittance PMMA alloy resin composition. The PMMA alloy resin composition is prepared from the following raw materials in parts by weight: 10-95 parts of polymethyl methacrylate and 5-90 parts of a PMMA special heat-resisting agent, wherein the PMMA special heat-resisting agent is N-phenylmaleimide-styrene-methyl methacrylate terpolymer P (NPMI-St-MMA). The invention further provides a preparation method of the PMMA alloy resin composition. The preparation method has the advantages that the utilized N-phenylmaleimide-styrene-methyl methacrylate terpolymer has good compatibility with polymethyl methacrylate and is high in transparency after being blended, and the prepared alloy resin has the advantages of high transmittance, scraping resistance and heat resistance; the PMMA alloy resin composition can further contain processing aids including an impact modifier, a liquidity regulator, a lubricant and a demolding agent, and can be used for preparing PMMA alloy resin compositions for various purposes; the preparation process of the PMMA alloy resin is relatively simple and is beneficial to mass production.

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 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-methyl-styrene, N-...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L33/24C08L25/14
Inventor 刘星周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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