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A high heat distortion temperature polypropylene nanocomposite composition and its preparation method

A deformation temperature and nanocomposite technology, applied in the field of high heat deformation temperature polypropylene nanocomposite composition and its preparation, can solve the problems of agglomeration, the filling is not easy to disperse uniformly, the mechanical properties of materials are decreased, etc., and the effect of high heat deformation temperature can be achieved.

Active Publication Date: 2016-03-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filling a large amount of inorganic substances can effectively improve the heat resistance of polypropylene, but often in the highly filled polypropylene composite system, the filler is not easy to disperse evenly, and it is easy to produce local agglomeration, resulting in a decline in the mechanical properties of the material, making it difficult to play the role of the material

Method used

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  • A high heat distortion temperature polypropylene nanocomposite composition and its preparation method
  • A high heat distortion temperature polypropylene nanocomposite composition and its preparation method
  • A high heat distortion temperature polypropylene nanocomposite composition and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] With 100 parts of polypropylene (same as comparative example 1), 0.04 part of eight (N-cyclohexyl) benzamido polysilsesquioxane (self-made), 0.04 part of nucleating agent TMB-5, 0.3 part of antioxidant 1010 ( Same as comparative example 1) mix uniformly in a high-speed mixer for 3 minutes, melt and blend the resulting mixture in a twin-screw extruder, and set the temperature of each section of the twin-screw extruder to T 1 =175°C, T 2 =185°C, T 3 =195°C, T 4 =205°C, T 5 =215°C, T 6 =220°C, T 7 =220°C, T 8 = 220° C., rotating speed 300 r / min, cooling and cutting into pellets, and making a standard sample by injection molding. The properties of the polypropylene composition obtained through testing are shown in Table 1.

Embodiment 2

[0026] Except changing the consumption of eight (N-cyclohexyl) benzamido polysilsesquioxane described in embodiment 1 into 0.1 part and the consumption of nucleating agent TMB-5 into 0.1 part, all the other conditions are the same as in embodiment 1 same. The polypropylene composition was made into a standard sample by injection molding, and the properties of the polypropylene composition obtained through testing are shown in Table 1.

Embodiment 3

[0028] Except changing the consumption of eight (N-cyclohexyl) benzamido polysilsesquioxane described in embodiment 1 into 0.4 part and the consumption of nucleating agent TMB-5 into 0.1 part, all the other conditions are the same as in embodiment 1 same. The polypropylene composition was made into a standard sample by injection molding, and the properties of the polypropylene composition obtained through testing are shown in Table 1.

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Abstract

The invention provides a high heat deflection temperature type polypropylene nano-composite composition and a preparation method thereof, and belongs to the technical field of modification of high polymer materials. The polypropylene nano-composite composition comprises the following raw materials in percentage by weight: 100 parts of polypropylene, 0.1 to 5 parts of octa(N-cyclohexyl) benzamido polysilsesquioxane, 0.001 to 1 part of nucleating agent, and 0.1 to 3 parts of antioxidant. The preparation method of the polypropylene composition comprises the following steps of: pre-mixing polypropylene, octa(N-cyclohexyl) benzamido polysilsesquioxane, the nucleating agent and the antioxidant through a high-speed mixer; performing melt blending and extruding on the mixture through a twin-screw extruder; and cooling and pelletizing to obtain the polypropylene composition. The polypropylene nano-composite composition has high heat deflection temperature, high strength as well as high rigidity.

Description

technical field [0001] The invention relates to a high heat distortion temperature polypropylene nanocomposite composition and a preparation method thereof, belonging to the technical field of composite modification of polymer materials. Background technique [0002] Polypropylene (PP) has the characteristics of low density, good mechanical properties, good chemical properties, non-toxicity, good electrical insulation, and good transparency. It is a thermoplastic with excellent comprehensive properties and is widely used in packaging, building materials, electrical appliances, furniture, cars, etc. However, polypropylene also has some defects, such as poor cold resistance, poor colorability, low low temperature impact strength, poor toughness, and low heat distortion temperature. These deficiencies will limit the application of polypropylene, such as medical devices used for steam sterilization, engines, etc., which have higher requirements for the heat resistance of polypr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/549
CPCC08K5/20C08K5/549C08L2201/08C08L23/12
Inventor 东为富黄池光陈明清马丕明周正毅倪忠斌
Owner JIANGNAN UNIV