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Hydrophobic scratch-resistant polypropylene composite material and preparation method thereof

A composite material and scratch-resistant technology, which is applied in the field of hydrophobic scratch-resistant polypropylene composite materials and its preparation, can solve the problems of large molecular weight of fluorine-containing silicone, difficulty in difficulty, and insignificant hydrophobic effect, and achieve high-priced effects

Active Publication Date: 2022-02-25
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular weight of the fluorine-containing silicone added to the polypropylene material prepared by this method is too large, making it difficult for it to migrate to the surface of the material, and finally the hydrophobic effect is not obvious

Method used

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  • Hydrophobic scratch-resistant polypropylene composite material and preparation method thereof
  • Hydrophobic scratch-resistant polypropylene composite material and preparation method thereof
  • Hydrophobic scratch-resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this example, a hydrophobic and scratch-resistant polypropylene composite material was prepared. The specific steps are as follows:

[0044] 1. The preparation method of functional hydrophobic particles is as follows:

[0045] (1) The preparation method of the hydrophobic functional particles is as follows: firstly, a silica sol is prepared by a sol-gel method. Then tridecafluorooctyltriethoxysilane with tetraethyl orthosilicate molar ratio of 1:0.02 is directly added to the silica sol, and the mass volume ratio to the silica sol is 0.1g / ml, and stirred for a further 12 hours at 50°C. The mixture is then centrifuged, washed and dried in the same manner, and the resulting product is called fluorinated silica. The prepared fluorinated silicon dioxide has a particle size of about 21nm and a specific surface area of ​​450m 2 / g.

[0046] (2) Dissolve the cellulose acetate and polyvinylpyrrolidone weighed according to the mass ratio of 0.5 in the mixed solution of ace...

Embodiment 2

[0050] In this example, a hydrophobic and scratch-resistant polypropylene composite material was prepared. The specific steps are as follows:

[0051] 1. The preparation method of functional hydrophobic particles is the same as that in Example 1.

[0052] 2. The preparation method of polypropylene composite material is as follows:

[0053] Weigh 77 parts of polypropylene resin, 8 parts of PTFE, 12 parts of calcium carbonate, 3 parts of functional hydrophobic masterbatch, 0.3 part of stabilizer and 0.5 part of auxiliary agent according to the weight ratio, stir and mix in the mixer for 5 minutes, put the mixed material Pellet into a twin-screw extruder to obtain a durable antibacterial hydrophobic self-cleaning polypropylene composite material. The rotational speed of the twin-screw extruder is 400 rpm, and the processing temperature is 210°C.

Embodiment 3

[0055] In this example, a hydrophobic and scratch-resistant polypropylene composite material was prepared. The specific steps are as follows:

[0056] 1. The preparation method of functional hydrophobic particles is the same as that in Example 1.

[0057] 2. The preparation method of polypropylene composite material is as follows:

[0058] Weigh 75 parts of polypropylene resin, 8 parts of PTFE, 12 parts of calcium carbonate, 5 parts of functional hydrophobic masterbatch, 0.3 part of stabilizer and 0.5 part of auxiliary agent according to the weight ratio, stir and mix in the mixer for 5 minutes, put the mixed material Pellet into a twin-screw extruder to obtain a durable antibacterial hydrophobic self-cleaning polypropylene composite material. The rotational speed of the twin-screw extruder is 400 rpm, and the processing temperature is 210°C.

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Abstract

The invention discloses a hydrophobic scratch-resistant polypropylene composite material and a preparation method thereof. The super-hydrophobic scratch-resistant composite material is prepared from the following components: 75 to 100 parts of resin matrix, 1 to 10 parts of PTFE, 0 to 15 parts of mineral filler, 1 to 8 parts of hydrophobic functional particles, 0.3 to 0.5 part of mass stabilizer and 0 to 0.5 part of mass processing aid. The hydrophobic scratch-resistant resin disclosed by the invention has excellent hydrophobic performance, especially in the application field of shell materials, and the excellent hydrophobic characteristic of the hydrophobic scratch-resistant resin can endow the material with durability and easiness in cleaning, so that the excellent scratch-resistant characteristic not only protects the appearance color of the material, but also is beneficial for people not to damage a hydrophobic layer on the surface of the material in the contact use process.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a hydrophobic scratch-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polypropylene has been widely used as a material in various fields, and it is characterized by a wide range of applications in fields such as home appliances and automotive interiors. However, with the upgrading of current products and the improvement of customer requirements, many home appliance manufacturers and automotive interior materials, such as dishwasher liners, home appliance shells, and automotive interiors, will hang water droplets or residual water on parts that are in contact with water. It is easy to pollute and breed bacteria, and even cause short circuits and other hazards in severe cases. Therefore, it is of great significance to improve the hydrophobicity and scratch resistance of polypropylene ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L27/18C08L1/12C08L39/06C08K9/06C08K3/36
CPCC08L23/12C08L27/18C08L1/12C08L39/06C08K9/06C08K3/36
Inventor 侯江松杨涛张浩石景丽岳同健
Owner 上海日之升科技有限公司