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High-rigidity and high-toughness modified PMMA material and preparation method thereof

A high-toughness, high-rigidity technology, applied in the field of high-rigidity and high-toughness modified PMMA materials and its preparation, can solve problems such as blackness, weather resistance, scratch resistance evaluation, weather resistance decline, coloring decline, etc., to improve durability Effects of light and scratch resistance, improved impact toughness, and improved entanglement

Inactive Publication Date: 2020-01-14
中广核俊尔(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because it is difficult to increase the toughening of PMMA resin. Even if the toughening effect of butadiene rubber tougheners such as MBS and ABS high-grade rubber powder is used for toughening modification, the notched impact strength is difficult to reach. 7KJ / m2 or more, it will also easily lead to problems such as weather resistance decline, glossiness decline, coloring decline, etc.
[0004] Patent document CN105255084A adopts the method of ethylene-methyl methacrylate-butyl acrylate copolymer to toughen PMMA resin and can obtain higher impact toughness; The impact is relatively large, and there is still a certain gap in the preparation of PMMA resins with excellent comprehensive properties
Patent document CN105885320A uses PVAC resin blended with acrylate core-shell toughening agent; although the rigidity and toughness are all acceptable, it does not evaluate the properties of blackness, weather resistance, and scratch resistance

Method used

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  • High-rigidity and high-toughness modified PMMA material and preparation method thereof
  • High-rigidity and high-toughness modified PMMA material and preparation method thereof
  • High-rigidity and high-toughness modified PMMA material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) By weighing parts by weight of each raw material listed in Table 1, take PMMA resin (CM207), toughening agent (M210), compatibilizer (KL-E4370), antioxidant (antioxidant 168), Add the 6 raw materials of weather resistance agent (2-(2'-hydroxy-5'-octylphenyl)-benzotriazole) and lubricant (pentaerythritol stearate) into the high mixer and stir for 3 minutes at a speed of 50rpm ;

[0029] (2) Add to the main feeder of the twin-screw extruder, adjust the main feed and the main engine speed, and finally enter the twin-screw extruder for extrusion and granulation; the twin-screw extruder has 11 barrels , the vacuum ports are located in the sixth and ninth sections of the barrel; the temperature distribution of the twin-screw extruder is as follows: from the feed section to the head: 200°C, 210°C, 220°C, 220°C, 225°C, 225°C, 220°C, 220°C, 220°C, 220°C, 225°C, the screw speed is 400rpm;

[0030] (3) The extruded material is cut into pellets after water cooling, and the pe...

Embodiment 2

[0032] (1) By weighing parts by weight of each raw material listed in Table 1, take PMMA resin (CM207), toughening agent (M210), compatibilizer (KL-E4370), antioxidant (oxidant inhibitor 1010), The six raw materials of weathering agent (2-(2'-hydroxyl-5'-octylphenyl)-benzotriazole), lubricant (barium stearate, magnesium stearate) are added to the high-speed mixer at a high speed Stir at 100rpm for 5 minutes;

[0033] (2) Add to the main feeder of the twin-screw extruder, adjust the main feed and the main engine speed, and finally enter the twin-screw extruder for extrusion and granulation; the twin-screw extruder has 11 barrels , the vacuum ports are located in the sixth and ninth sections of the barrel; the temperature distribution of the twin-screw extruder is as follows: from the feed section to the head: 200°C, 215°C, 215°C, 218°C, 220°C, 225°C, 230°C, 220°C, 220°C, 220°C, 225°C, the screw speed is 450rpm;

[0034] (3) The extruded material is cut into pellets after wate...

Embodiment 3

[0036] (1) By weighing the parts by weight of each raw material listed in Table 1, take PMMA resin (CM207), toughening agent (M210), compatibilizer (KL-E4370), antioxidant (oxidant inhibitor 618), Add the 6 raw materials of weather resistance agent (2-hydroxy-4-n-octyloxy-benzophenone) and lubricant (fatty acid amide, pentaerythritol stearate) into the high mixer and stir at a speed of 100rpm for 10 minutes;

[0037] (2) Add to the main feeder of the twin-screw extruder, adjust the main feed and the main engine speed, and finally enter the twin-screw extruder for extrusion and granulation; the twin-screw extruder has 11 barrels , the vacuum port is located in the sixth and ninth sections of the barrel; the temperature distribution of the twin-screw extruder is as follows: from the feed section to the head: 205°C, 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, 220°C, 218°C, 215°C, 220°C, the screw speed is 400rpm;

[0038] (3) The extruded material is cut into pellets after water c...

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Abstract

The invention provides a high-rigidity and high-toughness modified PMMA material, which comprises, by mass, 52-90% of a PMMA resin, 5-40% of a toughening agent, 1-5% of a compatilizer, 0.1-1% of a weather-resistant agent, 0.1-1% of an antioxidant, and 0.1-1% of a lubricant. According to the invention, the SGMA and the PMMA side chain are subjected to a transesterification reaction, so that the molecular entanglement degree of the PMMA base material can be improved, and the light resistance and the scratch resistance of the product are improved; and toughening and compatibilizing are performedby using the terpolymer to achieve the bidirectional action, so that the efficient toughening agent does not need to be added excessively while the toughening is performed so as to achieve the purposeof less addition.

Description

technical field [0001] The invention discloses a high-rigidity and high-toughness modified PMMA material and a preparation method thereof. Background technique [0002] Polymethyl methacrylate resin (abbreviated as PMMA, commonly known as plexiglass, acrylic or acrylic), has crystal-like transparency, light transmittance of more than 92%, and has a good color development effect when dyed with dyes; in addition, PMMA has excellent weather resistance, high surface hardness and surface gloss, and good high temperature performance. Due to environmental pressure and cost pressure, major automobile OEMs plan to develop spray-free materials. Piano black PMMA has attracted widespread attention due to its excellent weather resistance and scratch resistance. [0003] However, PMMA resin has the fatal defect of insufficient impact toughness, so it often has the problems of high brittleness and easy cracking, especially the application of thin products will be more restricted. In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L33/08C08L25/14C08K5/3475C08K5/00C08K5/132
CPCC08L33/12C08L2201/08C08L2205/03C08L33/08C08L25/14C08K5/3475C08K5/00C08K5/132
Inventor 刘艺王海华陈晓敏沈岳新杨仓先
Owner 中广核俊尔(上海)新材料有限公司
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