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Preparation method of nanometer calcium carbonate filling modified polypropylene automotive interior material

A technology for nano-calcium carbonate and automotive interiors, applied in the field of preparation of nano-calcium carbonate-filled modified polypropylene materials, which can solve problems such as uneven dispersion, poor processing performance, and poor finish

Inactive Publication Date: 2010-06-30
辽阳市宏伟区康达塑胶树脂厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of filling polypropylene with ordinary calcium carbonate in the past, due to the large particle size of ordinary calcium carbonate, it is unevenly dispersed in polypropylene, resulting in poor stability, poor finish, and poor processability of the modified material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take by weighing 35 kilograms of polypropylene, 5 kilograms of nano calcium carbonate through activation treatment, ethylene-octene copolymer refers to poly(ethylene-1-octene), poly(ethylene-1-octene) graft maleic anhydride 10 kilograms , the plastic processing aids are antioxidant 1010, antioxidant 168, etc. and lubricant white oil, the amount added is 350 grams, and the above-mentioned raw materials and processing aids are mixed uniformly in a high-speed mixer. The process route of twin-screw melt blending is adopted. The temperature of each section of the extruder body: 190°C, 200°C, 220°C, 220°C, 220°C, the temperature of the head is 220°C, and the melt temperature is 225°C. Through the melt blending process route, the melt is extruded and cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard samples on an injection molding machine. Equilibrate for 24 hours for mechanical performance testing. The mechanical p...

Embodiment 2

[0034] Take by weighing 35 kilograms of polypropylene, 7.5 kilograms of nano-calcium carbonate through activation treatment, 7.5 kilograms of poly(ethylene-1-octene) grafted maleic anhydride, add appropriate antioxidant and other auxiliary agents, and above-mentioned raw material and processing aid The agent is mixed evenly in a high-speed mixer. The process route of twin-screw melt blending is adopted. The temperature of each section of the extruder: body temperature 190°C, 200°C, 220°C, 220°C, 220°C, head temperature 220°C, melt temperature 225°C. Through the melt blending process route, the melt is extruded, cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard samples on an injection molding machine. After the samples are injected, they are equilibrated for 24 hours for mechanical performance testing. The mechanical performance test results of the above-mentioned nano-calcium carbonate filled modified polypropylene a...

Embodiment 3

[0036] Take by weighing 30 kilograms of polypropylene, 10 kilograms of nano-calcium carbonate through activation treatment, 10 kilograms of poly(ethylene-1-octene) grafted maleic anhydride, add an amount of antioxidant and other auxiliary agents, mix above-mentioned raw material and processing aid The agent is mixed evenly in a high-speed mixer. The process route of twin-screw melt blending is adopted. The temperature of each section of the extruder: body temperature 190°C, 200°C, 220°C, 220°C, 220°C, head temperature 220°C, melt temperature 225°C. Through the melt blending process route, the melt is extruded, cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard samples on an injection molding machine. After the samples are injected, they are equilibrated for 24 hours for mechanical performance testing. The mechanical performance test results of the above-mentioned nano-calcium carbonate filled modified polypropylene au...

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PUM

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Abstract

The invention relates to a preparation method of a nanometer calcium carbonate filling modified polypropylene automotive interior material, aiming at solve the problem of poor stability, poor fineness and the like of the modified material by filling the common calcium carbonate into polypropylene. Polypropylene granules serve as base stocks, and polypropylene is obtained by homopolymerization or copolymerization; nanometer calcium carbonate serves as a inorganic filler, and activating treatment needs to be carried out on the surface thereof; polyolefin grafting materials and other plastics processing aids are chosen to serve as accessory materials; a double-screw melt blending process route is adopted to control proper blending process conditions; titanate coupling agent is adopted to activate the surface of the nanometer calcium carbonate; and ethylene-octene copolymer grafted maleic anhydride is adopted for grafting polyolefin. The method of the invention has the advantage of obtaining the purposes of enhancement and toughening modification for polymer. The polypropylene composite material obtained by the invention can satisfy the requirements of auto industry on polypropylene automotive interior material.

Description

Technical field: [0001] The invention belongs to the preparation technology of polymer nanocomposite materials in the modification of polymer materials, and in particular relates to a preparation method of nano calcium carbonate filled modified polypropylene materials. Background technique: [0002] Polypropylene has the advantages of low density, good mechanical balance, chemical corrosion resistance, easy processing, high heat distortion temperature, and low price. In recent years, the method of preparing new engineered polypropylene materials by polymerization modification, blending modification and both technologies has been widely recognized. Among them, blending modification requires less investment and quick results, and has become one of the most active fields in polymer material science and engineering. [0003] Physical modification is to add other inorganic fillers, organic fillers, other plastics, rubber, thermoplastic elastomers or some additives with special f...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08K9/04C08L51/06
Inventor 郭铭高辉徐祥明王忠军关冲
Owner 辽阳市宏伟区康达塑胶树脂厂
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