Plastic alloy and preparation thereof
A technology for plastic alloys and mixtures, applied in the field of plastic alloys and their preparation, can solve problems such as poor mechanical properties of plastic alloys, and achieve the effects of excellent low-temperature impact resistance, good melt fluidity, and excellent mechanical properties
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[0021] The preparation method of the plastic alloy described in the present invention comprises melt extruding a kind of mixture, and this mixture contains polycarbonate, polybutylene terephthalate, inorganic toughening agent and flame retardant, wherein, this mixture also Contains polyalkyl acrylates and / or polyalkyl methacrylates.
[0022] In the mixture of the present invention, based on 100 parts by weight of polycarbonate, the content of the polybutylene terephthalate is preferably 1-60 parts by weight, and the content of the flame retardant is preferably 4- 10 parts by weight, the content of the inorganic toughening agent is preferably 1-5 parts by weight; based on 100 parts by weight of the inorganic toughening agent, the total content of the polyalkyl acrylate and polyalkyl methacrylate Preferably it is 1-5 parts by weight. Further preferably, based on 100 parts by weight of the inorganic toughening agent, the content of the polyalkyl acrylate and the polyalkyl methac...
Embodiment 1
[0031] This example illustrates the plastic alloy of the present invention and its method of preparation.
[0032] Put 100 grams of silicon dioxide (average particle diameter of 10 nm), 1 liter of distilled water and 10 grams of isobutanol in a strong disperser (Wuxi Nanquan Chemical Equipment Factory) and disperse at a speed of 500 r / min for 3 minutes. Then the dispersed mixture was transferred to a three-necked flask, and 2.5 grams of methyl methacrylate was added as a polymerized monomer, heated to 70 ° C, and then 10 ml of ammonium persulfate aqueous solution with a concentration of 0.5 g / ml was added dropwise To the above mixed solution, the dropwise addition was completed after 1 hour. After the dropwise addition was complete, stirring was continued for 3 hours. Then the mixture was filtered, washed and dried at 80°C to obtain a polymer product. The weight of the polymerization product was 101.5 g. In the polymer product, the weight of the polymethyl methacrylate is 1...
Embodiment 2
[0038] Prepare the plastic alloy according to the method of Example 1, the difference is that the silicon dioxide is alkylated silicon dioxide through the following alkylation treatment: 100 parts by weight of silicon dioxide (average particle diameter is 10nm), The coupling agent (KH-750 produced by Qufu Huarong Chemical New Material Co., Ltd.) of 5 parts by weight is mixed with 400 parts by weight xylene in a strong disperser (Nanquan Chemical Equipment Plant, Wuxi City) to obtain a mixture, and The mixture was transferred to a three-necked flask, and the alkylation reaction was carried out under magnetic stirring, the reaction was carried out under nitrogen atmosphere, the temperature was 150° C., and the reaction time was 4 hours. Then the material in the three-necked flask was transferred to a beaker and allowed to stand for stratification, and the lower layer of precipitate was taken out, then washed with acetone and dried. Finally, plastic alloy A2 was obtained.
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Abstract
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