Hydrophobic polyolefin composition and preparation method thereof

A composition and polyolefin technology, applied in the field of modified plastics and their preparation, can solve problems such as loss of due effect, separation of hydrophobic components, attenuation of mechanical properties, etc., and achieve excellent hydrophobic performance, improved hydrophobic performance, and good rigidity. Effect

Pending Publication Date: 2021-03-19
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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AI-Extracted Technical Summary

Problems solved by technology

However, the hydrophobic additives used are all low-molecular polar compounds and are not fixed. Soaking in water or its solution will quickly cause its hydrophobic components to be extracted and lose its due effect.
On the other hand, its original intention is to introduce alkyl branches int...
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Abstract

The invention relates to a hydrophobic polyolefin composition and a preparation method thereof. The composition comprises the following components: polyolefin resin, an elastomer, mineral powder, organic fluoride, an antioxidant, other processing aids and functional aids. The hydrophobic property of a material is improved through a special system and structure, and meanwhile, the mechanical property of the material is maintained, so that the use requirements in the fields of automobiles, electronic appliances, household appliances, buildings, offshore power generation and the like are met.

Technology Topic

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  • Hydrophobic polyolefin composition and preparation method thereof
  • Hydrophobic polyolefin composition and preparation method thereof
  • Hydrophobic polyolefin composition and preparation method thereof

Examples

  • Experimental program(11)
  • Comparison scheme(6)

Example Embodiment

[0055] Example 1
[0056] Hydrophobic polyolefin composition, by weight percentage, its mineral powder treatment liquid composition is as follows:
[0057]
[0058] The preparation method of the emulsion is as follows: firstly add the monoalkoxy pyrophosphate type titanate coupling agent, the polypropylene wax emulsion grafted with maleic anhydride and methacrylate into the strong shear emulsification equipment, stir at a low speed of 100rpm Evenly, then add 1.0wt.% nano-calcium carbonate in proportion, first shear at a low speed of 100rpm, then slowly increase the speed to 3000rpm, stir at a high speed for 10 minutes, then stop slowly, and wait for standing without stratification, Then add 1.0wt.% nano-calcium carbonate, cut according to the method of the previous step, and wait for standing without delamination to complete the preparation of the treatment solution.
[0059] Mineral powder treatment method: first immerse the mica in the treatment solution twice the mass, and stir at a low speed of 100rpm for 30 minutes, so that the nano-mineral powder and other polymer substances in the emulsion are partially deposited on the surface of the mineral powder, and then stand still. Remove the impregnation solution, put the mineral powder in an oven at 100°C for 2-8 hours to remove small molecules and moisture on the surface of the mineral powder, use an infrared moisture meter to detect the moisture content, and stop drying when it is lower than 0.2%. (Note: The mass ratio of mineral powder and treatment liquid in the obtained hydrophobic mineral powder is about 5:1) The components and mass percentages of the hydrophobic polyolefin composition of the present embodiment are as follows:
[0060]
[0061]
[0062] Weigh each raw material according to the mass ratio, put all kinds of raw materials except the hydrophobic mineral powder in the high mixer and mix them, mix them evenly and add them through the main feeding port, the mineral powder is in the fifth section of the 48:1 machine The screw barrel is added, and the material is melted and blended by a twin-screw extruder, extruded and granulated to obtain the required material. The screw speed is 300 rpm, and the melting temperature of the extruder is set to 160°C, 180°C, 200°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 230°C, 230°C, 220°C.

Example Embodiment

[0063] Example 2
[0064] Hydrophobic polyolefin composition, its mineral powder treatment fluid composition is as follows:
[0065]
[0066] The preparation method of the emulsion is as follows: first, add the chelating titanate coupling agent, vinyl silane coupling agent, MMA-BA-AA emulsion and methacrylic acid into the strong shear emulsification equipment, and stir evenly at a low speed of 100rpm. Then add 1.0wt.% nano-silica in proportion, first shear at a low speed of 100rpm, then slowly increase the speed to 3000rpm, stir at high speed for 10 minutes, then stop slowly, wait until it is not stratified, and then add 1.0wt.% nano-calcium carbonate, cut according to the method of the previous step, after standing still without delamination, then add 1.0wt.% nano-calcium carbonate, cut according to the method of the previous step, after standing without delamination, complete the treatment liquid preparation.
[0067] Mineral powder treatment method: first impregnate calcium carbonate in the treatment solution twice its mass, stir at a low speed of 100rpm for 10 minutes, so that the nano-mineral powder and other polymer substances in the emulsion are partially deposited on the surface of the mineral powder, and then the soaking solution To remove, put the mineral powder in an oven at 100°C for 2-8 hours to remove small molecules and moisture on the surface of the mineral powder, use an infrared moisture meter to detect the moisture content, and stop drying when it is lower than 0.2%.
[0068] The components and mass percentages of the hydrophobic polyolefin composition are as follows:
[0069]
[0070] Weigh each raw material according to the mass ratio, put all kinds of raw materials except the hydrophobic mineral powder in the high mixer and mix them, mix them evenly and add them through the main feeding port, the mineral powder is in the 6th section of the 48:1 machine The screw barrel is added, and the material is melted and blended by a twin-screw extruder, extruded and granulated to obtain the required material. The screw speed is 200 rpm, and the melting temperature of the extruder is set to 100°C, 120°C, 140°C, 160°C, 170°C, 170°C, 170°C, 170°C, 180°C, 180°C, 180°C, 160°C.

Example Embodiment

[0071] Example 3
[0072] Hydrophobic polyolefin composition, its mineral powder treatment fluid composition is as follows:
[0073]
[0074] The preparation method of the emulsion is as follows: First, add epoxy silane coupling agent, polyethylene wax emulsion grafted with maleic anhydride and n-butyl methacrylate into the emulsification equipment with strong shear, stir evenly at a low speed of 100rpm, and then press Add 1.0wt.% nano-titanium dioxide in proportion, first shear at a low speed of 100rpm, then slowly increase the speed to 3000rpm, stir at a high speed for 10 minutes, then stop slowly, wait for standing without stratification, and then add 1.0wt.% Nano-titanium dioxide, cut according to the previous step, after standing still without delamination, then add 1.0wt.% nano-titanium dioxide, in this order, until all the nano-mineral powder is added, and the preparation of the treatment solution is completed.
[0075] Mineral powder treatment method: first immerse the talc powder in the treatment solution twice its mass, stir at a low speed of 100rpm for 40 minutes, so that the nano-mineral powder and other polymer substances in the emulsion are partially deposited on the surface of the mineral powder, and then the dipping solution To remove, put the mineral powder in an oven at 100°C for 2-8 hours to remove small molecules and moisture on the surface of the mineral powder, use an infrared moisture meter to detect the moisture content, and stop drying when it is lower than 0.2%.
[0076] The components and mass percentages of the hydrophobic polyolefin composition are as follows:
[0077]
[0078] Weigh each raw material according to the mass ratio, put all kinds of raw materials except the hydrophobic mineral powder in the high mixer and mix them, mix them evenly and add them through the main feeding port, the mineral powder is in the fifth section of the 48:1 machine The screw barrel is added, and the material is melted and blended by a twin-screw extruder, extruded and granulated to obtain the required material. The screw speed is 450 rpm, and the melting temperature of the extruder is set to 160°C, 180°C, 200°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 230°C, 230°C, 220°C.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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