Heat-resistant ASA resin composition with tiger wrinkle defect eliminated and preparation method thereof
A technology of ASA resin and tiger skin pattern, which is applied in the field of polymer material processing, can solve the problems that the heat resistance level is difficult to meet the heat resistance requirements of automotive trim parts, it is difficult to be widely used in the automotive field, and the impact toughness of materials is difficult to achieve. , to achieve excellent anti-noise effect, good mechanical properties and low cost
Active Publication Date: 2016-03-23
SHANGHAI KUMHO SUNNY PLASTICS
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Problems solved by technology
This kind of ASA composite material without spraying metal texture, due to the addition of coated aluminum powder, the impact toughness of the material is difficult to meet the requirements of automotive trims, and its heat resistance level is also difficult to meet the heat resistance of automotive trims. Require
Therefore, it is difficult to be widely used in the automotive field
Method used
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preparation example Construction
[0033] Its preparation method comprises the following steps:
[0034] (1) prepare materials according to the described components and contents;
[0035] (2) Premix the materials prepared in the step (1) in a high-speed mixer;
[0036] (3) Pass the premixed material obtained in step (2) through a twin-screw extruder, melt and extrude it at an extrusion temperature of 180-250° C. and a screw speed of 200-500 rpm, and cool and granulate. An ultra-high melt strength blow molding ABS resin composition is obtained.
Embodiment 1
[0038] Raw material composition
[0039]
Embodiment 2
[0041] Raw material composition
[0042]
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Abstract
The invention relates to a heat-resistant ASA resin composition with tiger wrinkle defect eliminated and a preparation method thereof. The heat-resistant ASA resin composition is prepared from following raw materials, by weight: 30-50 parts of ASA rubber powder, 30-60 parts of SAN resin, 5-15 parts of a tiger wrinkle defect eliminating agent, 5-20 parts of a heat-resistant agent and 0.5-1.5 parts of a processing aid. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixing machine, feeding the mixture into a double-screw extruder through a metering device to melt and composite the mixture through transportation, shear and mixing by means of screw rods, and performing extrusion, bar drawing, cooling and granule cutting to prepare the heat-resistant ASA resin composition. The method is easy to carry out. The tiger wrinkle defect on a workpiece during an injection molding process can be completely avoided by means of the ASA resin composition. The resin composition also is excellent in anti-impact, heat-resistant and such comprehensive performance, and is very suitable for being used as automobile exteriors, such as automobile gratings, columns, empennage decorative plates and the like.
Description
technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a heat-resistant ASA resin composition for eliminating tiger stripes and a preparation method thereof. Background technique [0002] The chemical structure of acrylonitrile-styrene-acrylate (ASA) resin is similar to that of acrylonitrile-butadiene-styrene (ABS) resin, and it is a ternary graft copolymer of acrylate rubber, acrylonitrile and styrene. [0003] Since the acrylic rubber without unsaturated double bond structure replaces butadiene rubber, only light waves with a wavelength of less than 290nm can destroy its chemical structure, so the weather resistance of ASA resin is much higher than that of ABS resin. In addition, ASA has excellent mechanical properties, good thermal stability and colorability. ASA resin was first industrialized by BASF in Germany in 1962, followed by Hitachi Chemical in Japan, General Electric in the United States, and DOW in t...
Claims
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IPC IPC(8): C08L25/12C08L51/00C08L79/08
CPCC08L25/12C08L51/00C08L2201/08C08L2205/025C08L2205/035C08L79/08
Inventor 季得运周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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