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A modified plastic technology, applied in the field of anti-wear and scratch AS modified plastics, can solve the problems of high cost, unsuitable for industrial application, etc., and achieve the effect of improving toughness and anti-scratch performance
Inactive Publication Date: 2013-12-18
广州市番禺区好友实业有限公司
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Fang Jianbo of Jiangsu Institute of Technology prepared a styrene-acrylonitrile copolymer (SAN)/high rubber powder/organic silicon blend by me...
Method used
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preparation example Construction
[0023] The following is the preparation method of the present invention
[0024] 1. Preparation of AS rubber powder by mechanochemical reactor
[0025] AS is usually a granular material, and the modified additive of AS, such as rubber powder or CPE powder, in order to improve the dispersion and compatibility of AS and rubber powder or CPE powder, the granular AS is prepared into AS by grinding mechanochemical method. Powder.
[0026] 2. Preparation of AS modified material
[0027] Select a toughening agent that has a certain compatibility with AS, melt and blend different compatibilizers, toughening agents and AS powder with a twin-screw extruder to prepare AS modified materials, use the toughening agent to toughen, and use the corresponding The compatibilizer is compatibilized, so that the toughener and the compatibilizer are synergistically strengthened.
[0028] Prepare AS modified material by melt blending and granulating AS, modifier and processing aid with twin-screw ...
Embodiment 1
[0037] Grind 5kg of AS pellets into powder, add 2kg of ABS, 1kg of maleic anhydride graft, and 0.5kg of anti-scratch agent-treated nano-calcium carbonate into a high-speed mixer for 15 minutes, and discharge; extrude with a twin-screw The machine extrudes and granulates at 200°C, and injects it into a fuel tank with an injection molding machine.
Embodiment 2
[0039] Grind 10kgAS pellets into powder, add 2kgPOE, 1kg maleic anhydride graft, 10kgCPE, 0.5kg anti-scratch agent-treated nano-calcium carbonate, add high-speed mixer for 15min, and discharge; use twin-screw The extruder extruded and granulated at 200°C, and was injection-molded into electric fan blades with an injection molding machine.
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Abstract
The invention discloses an abrasion-scratch resistant AS modified plastic. The abrasion-scratch resistant AS modified plastic comprises the following components: AS resin, a toughening agent, a compatibilizer, and an inorganic particle packing. Inorganic particles having a scratch resistant function are selected, an scratch resistant chemical agent is employed to modify the inorganic particles, the synergistic effect of the scratch resistance of the inorganic particles and the scratch resistant chemical agent is exerted, and thus the scratch resistant performance is improved; the toughening agent having a certain compatibility with AS is selected, melt blending of the compatibilizer, the toughening agent and AS powder which are different is carried out to prepare an AS modified material with a double-screw extrusion machine, the toughening agent is combined for toughening, and thus the plastic toughness is improved; and at the same time, the dispersion problem of a modifying agent is effectively solved.
Description
technical field [0001] The invention relates to the technical field of modified plastics, in particular to a scratch-resistant AS modified plastic. Background technique [0002] AS is a styrene-acrylonitrile copolymer, which has the advantages of good processability, high modulus, good dimensional stability, oil resistance and chemical resistance, and is widely used in household appliances and chemical industries, just like PC, ABS, PS, and PMMA. And daily necessities, such as fuel tanks, battery casings, fan blades. However, AS has poor impact toughness and high notch sensitivity, so it needs to be modified. [0003] AS molecules contain side phenyl groups and cyano groups, and have good compatibility with many polymers, which creates favorable conditions for the blending modification of AS. By blending, the impact strength, toughness and surface properties of AS can be improved. [0004] At present, rubber toughened and modified AS is commonly used to form alloys. The c...
Claims
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