Talcum powder master batch and preparation method thereof

A technology of talcum powder masterbatch and talc powder, which is applied in the field of talc powder masterbatch and its preparation, which can solve the problems of great impact on product toughness, unfavorable production and processing, environmental pollution, etc., achieve good rigidity, increase production capacity, and solve dust pollution Effect

Inactive Publication Date: 2013-09-18
SUZHOU HECHANG POLYMERIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional talcum powder is filled with PP, the dust will fly and cause environmental pollution; when the filling amount is large, the toughness of the product will be greatly affected, and it is not conducive to production and processing

Method used

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  • Talcum powder master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 83 parts of talcum powder, 16 parts of ethylene-octene copolymer (density 0.871g / cm 3 , melt index 0.7g / 10min), 0.5 parts of antioxidant, 0.5 parts of zinc stearate are added to the internal mixer to make it evenly mixed; then mixed in the twin-screw extruder, the temperature of each section of the twin-screw is : T 1 =150℃, T 2 =160°C, T 3 =170°C, T 4 =180°C, T 5 =190°C, T 6 =200°C, the total residence time of the reactants in the twin-screw extruder is 5min, and the speed of the twin-screw extruder is 320~350r.min -1 , extrude, cool, and pelletize to obtain talcum powder masterbatch.

[0022] According to the content of talcum powder is 15% to modify PP, talcum powder masterbatch filling formula is: 82 parts of PP, 18 parts of talcum powder masterbatch, that is, the direct filling formula of talc powder: 82 parts of PP, 15 parts of talc powder, 3 parts Ethylene-octene copolymer, antioxidant: 0.5%, lubricant: 0.5%, join in the high-speed mixing tank to make it m...

Embodiment 2

[0024] 78 parts of talcum powder, 21 parts of ethylene-octene copolymer (density 0.871g / cm 3 , melt index 0.7g / 10min), 0.5 parts of antioxidant, 0.5 parts of zinc stearate are added to the internal mixer to make it evenly mixed; then mixed in the twin-screw extruder, the temperature of each section of the twin-screw is : T 1 =150℃, T 2 =160°C, T 3 =170°C, T 4 =180°C, T 5 =190°C, T 6 =200°C, the total residence time of the reactants in the twin-screw extruder is 5min, and the speed of the twin-screw extruder is 320~350r.min -1 , extrude, cool, and pelletize to obtain talcum powder masterbatch.

[0025] Modified PP according to 15% talcum powder content, that is, 80.8 parts of PP, 19.2 parts of talc powder masterbatch, added to the high-speed mixing tank to make it evenly mixed; then mixed in the twin-screw extruder, the twin-screw The temperatures are: T 1 =150℃, T 2 =160°C, T 3 =170°C, T 4 =180°C, T 5 =190°C, T 6 =200°C, the total residence time of the reactants i...

Embodiment 3

[0027] 75 parts of talcum powder, 24 parts of ethylene-octene copolymer (density 0.871g / cm 3 , melt index 0.7g / 10min), 0.5 parts of antioxidant, 0.5 parts of zinc stearate are added to the internal mixer to make it evenly mixed; then mixed in the twin-screw extruder, the temperature of each section of the twin-screw is :T 1 =150℃, T 2 =160°C, T 3 =170°C, T 4 =180°C, T 5 =190°C, T 6 =200°C, the total residence time of the reactants in the twin-screw extruder is 5min, and the speed of the twin-screw extruder is 320~350r.min -1 , extrude, cool, and pelletize to obtain talcum powder masterbatch.

[0028] Modify PP according to 15% talcum powder content, that is, 80 parts of PP and 20 parts of talc powder masterbatch, add them into the high-speed mixing tank to make them evenly mixed; then knead in the twin-screw extruder, and the The temperatures are: T 1 =150℃, T 2 =160°C, T 3 =170°C, T 4 =180°C, T 5 =190°C, T 6 =200°C, the total residence time of the reactants in th...

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Abstract

The invention relates to a talcum powder master batch and a preparation method thereof. The talcum powder master batch comprises the following components: 75-84% of talcum powder, 15-25% of ethylene-octene copolymer, 0.3-0.6% of antioxidant and 0.3-0.6% of lubricant. The preparation method of the talcum powder master batch comprises the following steps of: adding all the components to a banbury mixer for banburying according to the proportion, wherein the banburying time ranges from 5 to 7 min and the temperature ranges from 110 to 130 DEG C; next, adding the mixture to a double-screw extruder for mixing, wherein the extrusion temperatures of the first section and the second section of the double-screw extruder range from 150 to 170 DEG C, and the extrusion temperatures of other several sections range from 170 to 200 DEG C; and the total stay time of the mixture in the double-screw extruder ranges from 3 to 8 min; and finally, extruding the obtained material, and then cooling and the material and performing grain-sized cutting, thereby obtaining the desired talcum powder master batch. As the talcum powder master batch is used, the dust pollution caused in the use of the traditional talcum powder is solved, and the tenacity of a modified polypropylene material can be improved so that the modified polypropylene material can keep excellent rigidity.

Description

technical field [0001] The invention relates to a talcum powder master batch material and a preparation method thereof. Background technique [0002] Talc powder has become an important inorganic mineral filler in plastic modification, and has been paid attention to in the research and application of filled modified polypropylene (PP) plastics. Talcum powder filled modified PP has huge market prospects in the fields of automobiles and electrical appliances. [0003] Talc powder is a commonly used mineral powder filler for PP, and has attracted widespread attention for its abundant resources, low price and excellent filling performance. Composite materials filled with talc powder have been widely used in the automotive industry and daily necessities. Compared with materials without talc powder, their products have good appearance quality, low shrinkage rate and high heat distortion temperature. The main development direction of automobiles is energy saving, environmental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/34C08J3/22B29C47/92B29C48/92
CPCB29C48/0022B29C48/022B29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 汪倩文潘进晶
Owner SUZHOU HECHANG POLYMERIC MATERIALS
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