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 c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] Weigh 35 kg of polypropylene, 5 kg of activated nano-calcium carbonate, ethylene-octene copolymer refers to poly(ethylene-1-octene), poly(ethylene-1-octene) grafted maleic anhydride 10 kg The plastic processing aids are antioxidant 1010, antioxidant 168, etc. and lubricant white oil, the added amount is 350 grams, and the above raw materials and processing aids are mixed uniformly in a high-speed mixer. Using twin-screw melt blending process, the temperature of each section of the extruder body: 190℃, 200℃, 220℃, 220℃, 220℃, die temperature 220℃, melt temperature 225℃. After the melt blending process, the melt is extruded and cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard specimens on the injection molding machine. After the specimens are injected, the temperature is 23±2℃. Equilibrate for 24 hours for mechanical performance test. The test results of the mechanical properties of the above...

Example Embodiment

[0033] Example 2:

[0034] Weigh 35 kilograms of polypropylene, 7.5 kilograms of activated nano-calcium carbonate, and 7.5 kilograms of poly(ethylene-1-octene) grafted maleic anhydride. Add appropriate amount of antioxidants and other additives, and combine the above raw materials and processing aids. The agent is 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 temperature 190℃, 200℃, 220℃, 220℃, 220℃, die temperature 220℃, melt temperature 225℃. After the melt blending process, the melt is extruded and cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard specimens on the injection molding machine. After the specimens are injected, they are balanced for 24 hours for mechanical performance testing. The mechanical performance test results of the above-mentioned nano calcium carbonate filled modified polypropylene automotiv...

Example Embodiment

[0035] Example 3:

[0036] Weigh 30 kilograms of polypropylene, 10 kilograms of activated nano-calcium carbonate, and 10 kilograms of poly(ethylene-1-octene) grafted maleic anhydride. Add appropriate amount of antioxidants and other additives, and combine the above raw materials and processing aids. The agent is 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 temperature 190℃, 200℃, 220℃, 220℃, 220℃, die temperature 220℃, melt temperature 225℃. After the melt blending process, the melt is extruded and cooled by water, and then pelletized by a pelletizer. After the pellets are dried, they are made into standard specimens on the injection molding machine. After the specimens are injected, they are balanced for 24 hours for mechanical performance testing. The mechanical performance test results of the above-mentioned nano calcium carbonate filled modified polypropylene automotive ...

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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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