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A kind of PE nanocomposite material and preparation method thereof

A nano-composite material and nano-material technology, applied in the field of PE nano-composite materials and preparation, can solve the problems of limited product performance improvement, short twin-screw processing section, complicated process, etc., and achieve low production cost, reduced environmental pollution, and simple process. Effect

Active Publication Date: 2021-05-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method is simple and the production cost is low, but this method is to add montmorillonite mud after the polyamide is melted, which will cause the montmorillonite mud to be completely mixed with the copolymer in the future, and the water between the layers will be gasified due to high temperature. Furthermore, montmorillonite cannot be well dispersed into polyamide, so that the product performance is limited; in addition, the montmorillonite slurry needs to increase a certain pressure in the feeding method to inject the slurry into the twin-screw, and because the processing section of the twin-screw is short, halfway Increasing the feeding interval of montmorillonite slurry requires increasing the length of twin-screw, resulting in more complicated process and higher cost

Method used

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  • A kind of PE nanocomposite material and preparation method thereof
  • A kind of PE nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] PE / graphene nanocomposite

[0097] Raw materials: 100 parts PE, 40 parts water, 10 parts graphene, 1 part glue

[0098] Preparation:

[0099] 1. Stir the above-mentioned water by weight under 1000HZ, 200W ultrasonic conditions, slowly add graphene powder, add gelatin after 30 minutes of ultrasonication, continue ultrasonication for 60 minutes, and finally form a paste-like graphene mixed material. The consistency of this mixed material is 36mm;

[0100] 2. Mix PE and paste graphene mixed materials well, and put them into the feed port of the twin-screw extruder;

[0101] 3. PE and graphene are further melted and mixed, extruded and granulated, and dried to obtain PE graphene nanocomposite material.

[0102] The main engine speed of the extrusion equipment is 30Hz, the main feeding hopper speed is 10Hz, the extrusion temperature is 160°C in the first zone, 190°C in the second zone, 190°C in the third zone, 200°C in the fourth zone, and 200°C in the fifth zone. The li...

Embodiment 2

[0104] PE / vanadium pentoxide nanocomposite

[0105] Raw materials: 100 parts of PE, 100 parts of water, 20 parts of vanadium pentoxide, 0.2 parts of water-soluble epoxy resin, 0.2 parts of anti-aging agent RD

[0106] 1. Stir the above-mentioned water by weight under ultrasonic conditions of 1000HZ and 1000W, slowly add vanadium pentoxide powder, add water-soluble epoxy resin after ultrasonication for 30 minutes, and continue ultrasonication for 60 minutes to obtain a paste-like vanadium pentoxide mixed material , the consistency of this mixed material is 75mm;

[0107] 2. Mix PE and paste-like vanadium pentoxide mixed material well, and put it into the feed port of the twin-screw extruder;

[0108] 3. PE and vanadium pentoxide are further melted and mixed, extruded and granulated, and dried to obtain PE / vanadium pentoxide nanocomposite material.

[0109] The speed of the main engine of the extrusion equipment is 80Hz, the speed of the main feeding hopper is 30Hz, the extrus...

Embodiment 3

[0111] PE / montmorillonite nanocomposite

[0112] Raw materials: 100 parts of PE, 100 parts of trimethylpentane, 0.5 parts of montmorillonite, 2.5 parts of lecithin, 0.3 parts of anti-aging agent AW

[0113] Preparation:

[0114] 1. Stir the above-mentioned trimethylpentane by weight under 800HZ, 1000W ultrasonic conditions, then slowly add montmorillonite powder into trimethylpentane, add lecithin after ultrasonication for 30min, and continue ultrasonication for 60min to obtain Paste montmorillonite mixed material, the consistency of this mixed material is 68mm;

[0115] 2. Mix PE, paste montmorillonite mixed material, anti-aging agent RD, mix well, and add to internal mixer;

[0116] 3. Melt and blend PE and montmorillonite in a mixer at 300°C for 3 hours, then granulate and dry to obtain PE / montmorillonite nanocomposites.

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Abstract

A PE nano-composite material is prepared by melting and blending the mixture including PE particles, nanomaterials and liquid media connecting the PE particles. The invention also discloses a preparation method of the PE nanocomposite material. The specific steps include A. mixing and stirring the nanomaterial with a liquid medium to form a paste-like nanomaterial mixture; B. mixing and stirring the nanomaterial mixture in step A with PE particles Forming a blend; C. Melt blending the blend in step B to obtain the PE nanocomposite material. The tensile strength and impact strength of the nanocomposite material are both improved on the basis of the PE base material, and the preparation method is simple, the production cost is low, and it is easy to popularize.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials and their preparation, and in particular relates to a PE nanocomposite material and a preparation method. Background technique [0002] Polyethylene (PE) has excellent physical and mechanical properties, electrical insulation properties and flexible and diverse processing properties. Its comprehensive properties are unmatched by most other thermoplastic resins, and it is one of the most widely used thermoplastics. Although polyethylene has been widely used in the field of engineering technology, some inherent defects and deficiencies limit its deeper application. At this time, the special performance of nanocomposites different from that of general composites points out a new way for the research of polyethylene modification. A large number of studies have confirmed that the combination of polyethylene and layered nanomaterials to make nanocomposites can significantly improve its comprehens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L89/00C08K3/04C08L63/00C08K3/22C08K3/34C08L5/04C08L33/02C08L39/02C08K3/02C08L5/08C08L61/22B82Y30/00
CPCB82Y30/00C08K3/346C08K2003/026C08K2201/011C08L23/06C08L89/00C08K3/042C08L63/00C08K3/22C08L5/04C08L33/02C08K3/34C08L39/02C08K3/02C08L5/08C08L61/22
Inventor 马永梅庄亚芳郑鲲张京楠曹新宇尚欣欣
Owner INST OF CHEM CHINESE ACAD OF SCI