PMMA resin composition improving wear resistance and preparation method thereof
A technology of resin composition and wear resistance, which is applied in the field of PMMA resin composition improving wear resistance and its preparation, can solve the problem of not being able to improve the wear resistance of PMMA well, unfavorable high-gloss spray-free materials, and loss of wear-resisting improvement effect and other issues, to achieve the effect of reduced surface friction coefficient, simple process and low cost
Active Publication Date: 2019-04-26
SHANGHAI KUMHO SUNNY PLASTICS
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- Claims
- Application Information
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Problems solved by technology
The former can be added by adding fillers, but generally fillers will affect the transparency of the material and thus affect the coloring performance of the material, which is not conducive to obtaining high-gloss spray-free materials; while the latter is generally added by adding liquid lubricants, but liquid lubricants can only Temporarily play the role of improving wear resistance, with the friction during use, the liquid lubricant on the surface will be gradually wiped off and lose the effect of improving wear resistance
Neither of the above two methods can improve the wear resistance of PMMA very well.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-4
[0034] Examples 1-4 provide a PMMA resin composition with improved wear resistance, and its components and parts by weight are shown in Table 2.
[0035] The preparation method of the PMMA resin composition improving wear resistance may further comprise the steps:
[0036] (1) get the raw materials ready by each component and parts by weight in table 1;
[0037] (2) Premix the materials prepared in the step (1) in a high-speed mixer;
[0038] (3) Pass the premixed material obtained in step (2) through a twin-screw extruder, melt and extrude it at an extrusion temperature of 200-210° C. and a screw speed of 200-500 rpm, and cool and granulate. A PMMA resin composition was obtained.
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Abstract
The invention provides a PMMA (polymethyl methacrylate) resin composition with improved wear resistance and a preparation method of the composition. The composition comprises, by weight, 80-93 parts of PMMA resin, 5-15 parts of nano-silicon dioxide, 1-5 parts of tridecafluorooctyl triethoxy siloxane, 0.3-1.0 part of lubricants, 0.3-1.0 part of antioxidants and 0.3-1.0 part of weather-proof agents. The raw materials are premixed in a high-speed mixer for 3-10 minutes, and then premix is extruded and granulated by a double-screw extruder to obtain the PMMA resin composition with the improved wear resistance. The PMMA resin composition has the advantages that the wear resistance of the prepared PMMA resin composition is obviously improved as compared with that of pure PMMA, and the PMMA resin composition has excellent comprehensive performances such as rigidity and heat resistance and is quite suitable for automobile exterior trimming parts such as automobile outer column decorating plates.
Description
technical field [0001] The invention relates to a PMMA blending modification method, in particular to a PMMA resin composition with improved wear resistance and a preparation method thereof. Background technique [0002] PMMA is a resin with high surface hardness and excellent wear resistance. Due to its excellent weather resistance, mechanical strength, scratch resistance, etc., it is also easy to be dyed, so PMMA is widely used as a high-gloss spray-free material in When the impact performance is not high, pure PMMA can be used for direct injection molding on the decorative panel of the outer pillar of the car; if the position requires higher impact strength, it is generally molded by two-color injection molding of PMMA and ABS. Both types of column panels have pure PMMA exterior surfaces. Since its high-gloss surface is easily scratched or worn, the wear resistance of pure PMMA cannot fully meet the wear resistance test of automobile OEMs. [0003] For pure PMMA materia...
Claims
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IPC IPC(8): C08L33/12C08K13/02C08K3/36C08K5/5419B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08K3/36C08K5/5419C08K13/02C08K2201/003C08K2201/011C08L33/12
Inventor 查超周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS