Antistatic polypropylene foam material and preparation method thereof

A foaming material, polypropylene technology, applied in the field of polymers, can solve the problems of difficult blending of polypropylene base resin, no mention of polypropylene blending and compounding, and low apparent density

Active Publication Date: 2013-01-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 200710192215.8 reports the preparation method of antistatic and conductive polypropylene, and the surface intrinsic resistivity of the obtained polypropylene sheet is 10 0 -10 11 Ωcm, the addition amount of carbon black is 5-40%. Due to the low apparent density of carbon black, the addition amount is relatively large, and it is difficult to blend with polypropylene base resin, which increases the complexity of the process and product cost
[0006] Chinese patent 200880124342.7 discloses a system comprising a solar receiving device and at least one component in thermal communication with the solar receiving device, the at least one component is formed from a composite material which may comprise a matrix of carbon-based fibers, the multiple Carbon-based fibers contain one or more of the following: mesophase carbon, carbon nanotubes, graphite, graphene and polyacrylonitrile carbon, but this method uses weaving and sintering to obtain composite materials, and the process is complicated (non-blending, no blending components)
[0007] Chinese patent 201010104549.7 relates to a preparation method of a graphene film tape with a cross-sectional shape of "one" shape. In the p

Method used

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  • Antistatic polypropylene foam material and preparation method thereof
  • Antistatic polypropylene foam material and preparation method thereof
  • Antistatic polypropylene foam material and preparation method thereof

Examples

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preparation example Construction

[0110] Preparation of High Melt Strength Polypropylene:

[0111] The polymerization reaction was carried out on a polypropylene pilot plant. Its main equipment includes prepolymerization reactor, first loop reactor and second loop reactor. Polymerization method and steps are as follows:

[0112] HMSPP101

[0113] (1) Prepolymerization reaction:

[0114] The main catalyst (titanium-containing solid catalyst active component) is obtained by the method described in Example 1 of Chinese Patent CN93102795, its Ti content: 2.4wt%, Mg content 18.0wt%, di-n-butyl phthalate content: 13wt %.

[0115] The main catalyst, co-catalyst (triethylaluminum), and the first external electron donor (dicyclopentyldimethoxysilane, DCPMS) were pre-contacted at 10°C for 20 minutes, and then continuously added to the pre-polymerization reactor for pre-polymerization. In the polymerization reactor, the pre-polymerization is carried out in the environment of the propylene liquid phase body, the temp...

Embodiment 1

[0129] 1. Preparation of graphene by chemical exfoliation

[0130] A: Weigh 5.5g artificial graphite (industrial grade, particle distribution is 10-20μm, specific surface area is 4m 2 / g), join 95mL, in the mixed solution of the vitriol oil (concentration 98%) of 4 ℃ and the concentrated nitric acid (concentration is 65-67%) of 47.5mL, add 5 gram potassium chlorate subsequently every 5 minutes, add up to 55 grams, Control the reaction temperature at 0-4°C. After the reaction lasts for 90 hours, wash with 0.1mol / L dilute hydrochloric acid and then deionized water repeatedly until no chlorine ions are detected and the pH value reaches neutral. Graphite oxide powder was obtained after vacuum drying at 40°C.

[0131] B: put the graphite oxide powder into the crucible and put it into a muffle furnace with an air atmosphere at 1000°C for rapid heat treatment for 20 seconds (that is, leave it for 20 seconds) to obtain exfoliatable graphite.

[0132] C: Using an ultrasonic cleaning ...

Embodiment 2

[0143] Preparation method as described in embodiment 1, process parameter changes as follows:

[0144] The composition of the masterbatch is changed to: PP: GNSs: compatibilizer: coupling agent = 100: 1.0: 1.5: 1.5

[0145] Coupling agent: vinyl silane;

[0146] Foaming agent: AC foaming agent;

[0147] Using a high-speed stirrer, the above self-made high melt strength polypropylene HMSPP101, graphene / polypropylene masterbatch, AC foaming agent, cell control agent (talcum powder), and lubricant (MB50-002) were mixed at a ratio of 100:10 : 8: 10: 2 for mixing to obtain the premix of polypropylene foam board, put the premix into the hopper of the extruder, the temperature of the extruder rises to 150-220°C, and the temperature is controlled at the die mouth At 170°C, extrude the foamed sheet.

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Abstract

The invention discloses an antistatic polypropylene foam material and a preparation method thereof. The foam material comprises the following blended components in parts by weight: 100 parts of high-melt-strength polypropylene, 0.1-2 parts of grapheme, 5-15 parts of a foaming agent, 0.125-0.25 parts of a compatilizer and 0.05-0.15 parts of a coupling agent. The method for preparing the antistatic polypropylene foam material comprises the following steps of: melting and blending according to the using amounts; molding and foaming.

Description

technical field [0001] The invention relates to the field of macromolecules, in particular to an antistatic polypropylene foam material and a preparation method thereof. Background technique [0002] Foam plastic is a new type of material. It uses plastic as the basic component and contains a lot of air bubbles. Therefore, foam plastic can also be said to be a composite plastic filled with gas. There are many kinds of foam plastics, but because they all contain a large number of bubbles, they have common characteristics, such as light weight, material saving, low thermal conductivity, good heat insulation performance, shock load absorption, excellent cushioning performance, good sound insulation performance, Good performance such as high specific strength. [0003] Although foam plastic has many special properties, its absolute strength is lower than that of non-foam plastic. Among many foam plastics, non-cross-linked polypropylene (PP) foam materials are widely used for t...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/02C08K3/04C08J9/10
Inventor 郭鹏吕明福张师军徐萌吕芸高达利徐凯杨庆泉陈力
Owner CHINA PETROLEUM & CHEM CORP
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