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Methyl methacrylate resin with excellent thermal stability and copolymer thereof

A technology of methyl methacrylate and thermal stability, applied in the field of thermoplastic polymers, can solve the problems of impairing the performance of PMMA resin, limited improvement of thermal stability of PMMA, etc., achieving a simple implementation method, easy industrialization and promotion, and widening the molding window. Effect

Active Publication Date: 2014-10-08
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on improving the thermal stability of commercialized PMMA resins, and they mainly rely on adding about 2%-10% of metal oxides, silicon compounds and other inorganic substances, which will seriously damage the original excellent properties of PMMA resins. performance
It is worth noting that the improvement of the thermal stability of PMMA by traditional antioxidants is very limited

Method used

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  • Methyl methacrylate resin with excellent thermal stability and copolymer thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of methyl methacrylate resin and its copolymer with excellent thermal stability, the preparation method comprises the following steps:

[0030] (1) Prepare materials according to the following components and parts by weight:

[0031] PMMA resin 100;

[0032] Antioxidant B900 0.5;

[0033] Sesamol 0.1;

[0034] (2) Stir the resin, antioxidant and sesamol in the high-speed mixer and mix them thoroughly, then send them into the twin-screw extruder through the metering device, control the temperature of the twin-screw extruder at 180-230°C, Under the conditions of conveying, shearing and mixing, the materials are melted and compounded, and finally through the steps of extrusion, drawing, cooling and pelletizing, the methyl methacrylate resin and its copolymer resin with excellent thermal stability are obtained.

Embodiment 2

[0036] A kind of methyl methacrylate resin and its copolymer with excellent thermal stability, the preparation method comprises the following steps:

[0037] (1) Prepare materials according to the following components and parts by weight:

[0038] PMMA resin 100;

[0039] Antioxidant B900 0.3;

[0040] Sesamol 0.5;

[0041] (2) The preparation method is the same as in Example 1.

Embodiment 3

[0043] A kind of methyl methacrylate resin and its copolymer with excellent thermal stability, the preparation method comprises the following steps:

[0044] (1) Prepare materials according to the following components and parts by weight:

[0045] PMMA resin 100;

[0046] Antioxidant B900 0.3;

[0047] Sesamol 1.0;

[0048] (2) The preparation method is the same as in Example 1.

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Abstract

The invention relates to a methyl methacrylate resin with excellent thermal stability and a copolymer thereof. The methyl methacrylate resin comprises the following raw materials in parts by weight: 100 parts of thermoplastic resin, 0.1-0.5 part of antioxidant and 0.1-2.0 parts of sesamol. The methyl methacrylate resin and the copolymer thereof disclosed by the invention have the advantages that the thermal stability of the methyl methacrylate resin and the copolymer of the methyl methacrylate resin can be greatly improved, so that the molding window of the methyl methacrylate resin and the copolymer of the methyl methacrylate resin is greatly widened; the implementation method is simple and low in cost, and can be put into industrial popularization easily.

Description

technical field [0001] The invention relates to the field of thermoplastic polymers, in particular to a methyl methacrylate resin with excellent thermal stability and a copolymer thereof. Background technique [0002] PMMA resin has the advantages of extremely high surface hardness and mechanical strength, strong UV resistance, excellent appearance performance, light transmittance of more than 92, etc., so it is widely used in automobiles in daily life. Lamps, display panels, building materials and decorative materials and other fields. [0003] However, due to the defective structure of the PMMA resin itself, such as the "head-to-head bond" generated by the coupling termination and the unsaturated end group generated by the disproportionation termination during the polymerization process, its thermal stability is poor, and it is easy to generate heat during the molding process. Depolymerization phenomenon, leading to the failure of the use of materials. Therefore, there i...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L25/14C08L51/04C08K5/1565
Inventor 周霆邱卫美罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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