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Scratch resistant polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene, can solve the problems of surface whitening, oily substance precipitation, surface precipitation and other problems, and achieve the effect of improved scratch resistance, remarkable scratch resistance and simple operation

Inactive Publication Date: 2017-01-04
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, adding anti-scratch additives or fillers to improve scratch performance is the most economical and effective method, but the addition of anti-scratch additives is likely to cause surface precipitation of the material during later use, resulting in whitening and oily parts on the surface. The precipitation of substances will affect the use; in addition, if the material is used as an automotive interior part, there will be disadvantages such as VOC and odor.
The method of filler modification has little effect, and usually requires a large amount of filler with a special structure to obtain the desired effect.

Method used

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  • Scratch resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] SiO with a particle size of 50 nm 2 and Fe 3 o 4 After the nanomaterials are weighed according to the mass ratio of 8:2, the two materials are evenly dispersed in pure water with an ultrasonic material emulsification disperser, and then put into an ultrasonic cell pulverizer for ultrasonic peeling. After 2 hours, let stand 4 minutes; then take it out for high-speed centrifugation, wash with ethanol to the center, and dry in a vacuum drying oven at 60°C for 30 hours to obtain SiO 2 Loaded nano-Fe 3 o 4 Composite SiO 2 / Fe 3 O4.

[0038] Mix 95 kg polypropylene, 0.5 kg phenolic heat stabilizer 1010, 0.5 kg lubricant EBS, 5 kg SiO prepared above 2 / Fe 3 O4, 0.2 kg of titanate coupling agent NDZ109, 0.2 kg of white oil 36# are melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and all raw materials are blended and extruded to obtain this product Examples of polypropylene composites. The processing temperature during prepa...

Embodiment 2

[0040] SiO with a particle size of 80 nm 2 and Fe 3 o 4 After the nanomaterials are weighed at a mass ratio of 9:1, the two materials are evenly dispersed in pure water using an ultrasonic material emulsifying disperser, and then placed in an ultrasonic cell pulverizer for ultrasonic peeling for 1 hour, and then left to stand for 3 minutes , taken out for high-speed centrifugation, and washed with ethanol to the center, and dried in a vacuum drying oven at 40°C for 24 hours to obtain SiO 2 Loaded nano-Fe 3 o 4 Composite SiO 2 / Fe 3 O4.

[0041] 97 kg of polypropylene, 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of lubricant zinc stearate, 0.3 kg of lubricant calcium stearate, 3 kg of SiO prepared above 2 / Fe 3 O4, 0.4 kg of silane coupling agent KH-550, 0.3 kg of white oil 32# are melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 56:1, and all raw materials are blended and extruded to obtain the product Examples of polypropyle...

Embodiment 3

[0043] SiO with a particle size of 10 nm 2 and Fe 3 o 4 After the nanomaterials are weighed according to the mass ratio of 7:3, the two materials are evenly dispersed in pure water with an ultrasonic material emulsification disperser, and then placed in an ultrasonic cell pulverizer for ultrasonic peeling for 3 hours, and then let stand for 5 minutes , taken out for high-speed centrifugation, washed with ethanol to the center, and dried in a vacuum drying oven at 70°C for 40 hours to obtain SiO 2 Loaded nano-Fe 3 o 4 Composite SiO 2 / Fe 3 O4.

[0044] With 93 kilograms of polypropylene, 0.1 kilogram of phenolic heat stabilizer 1010 and 0.1 kilogram of heat stabilizer 168, 0.2 kilogram of silane coupling agent KH-570, 0.2 kilogram of white oil 15#, 7 kilograms of SiO prepared above 2 / Fe 3 O4 was melt-mixed and dispersed in a twin-screw extruder with an aspect ratio of 35:1, and all raw materials were blended, extruded and granulated to obtain the polypropylene compound...

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Abstract

The invention provides a scratch resistant polypropylene composite material and a preparation method thereof. The scratch resistant polypropylene composite material is prepared by mixing the following raw materials in parts by weight: 90-98 parts of polypropylene, 2-10 parts of SiO2 / Fe3O4, 0.1-0.5 part of a coupling agent, 0.1-1 part of a heat stabilizer, 0-1 part of a lubricant and 0-0.5 part of white oil, and carrying out extruding granulation, wherein the weight of polypropylene and SiO2 / Fe3O4 is 100 parts, and SiO2 / Fe3O4 is prepared by loading nano Fe3O4 on the surface of nano SiO2, in which the mass percentage of nano SiO2 is 70-90% and the nano Fe3O4 is the balance. In the scratch resistant polypropylene composite material provided by the invention, SiO2 / Fe3O4 with good scratch resistance is added in the polypropylene material, so that the surface scratch resistance of the polypropylene material can be greatly improved, the addition amount is small, and has little effect on the other mechanical properties of the material is generated.

Description

technical field [0001] The invention relates to a polypropylene, in particular to a scratch-resistant polypropylene composite material and a preparation method thereof. [0002] technical background [0003] Polypropylene (PP) material is widely used in automobiles, electronic products and other fields due to its advantages of low price and light weight. However, the surface scratch resistance of polypropylene material is very poor, which greatly reduces the appearance of the product, and the scratches on the surface of the product will also lead to its stress concentration, which limits its performance. [0004] At present, the methods to improve the surface scratch resistance of polypropylene materials mainly include adding different fillers and additives to modify or change the molecular structure of PP or blending with other polymers. Among them, adding anti-scratch additives or fillers to improve scratch performance is the most economical and effective method, but the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L91/00C08K13/06C08K9/00C08K3/22C08K3/36C08K5/134
CPCC08L23/12C08L91/00C08K13/06C08K9/00C08K3/36C08K2003/2275C08K5/1345C08K5/526
Inventor 杨桂生计娉婷
Owner HEFEI GENIUS NEW MATERIALS