Modified white graphene composite polypropylene tubular product, and preparation method thereof

A technology of compounding polypropylene and white graphene, which is applied in chemical instruments and methods, heat exchange materials, and other chemical processes, can solve the problems of easy agglomeration, poor compatibility of matrix materials, and affecting the performance of polypropylene, and achieve good results. Effects of gas barrier property, heat-resistant temperature improvement, and tensile breaking strength improvement

Inactive Publication Date: 2017-12-08
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, patent CN104086887A uses a new type of micro-nano-scale nucleating agent to modify polypropylene for weather resistance and impact resistance. However, due to the high surface energy of the nucleating agent, it is easy to agglomerate and has poor compatibility with the matrix material, thus affecting the polymerization. Properties of propylene

Method used

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  • Modified white graphene composite polypropylene tubular product, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1) Preparation of modified white graphene: select 5-10 layers of white graphene to soak in 0.1% polyvinyl alcohol aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0030] Step 2) Blending: Weigh 100 parts of pipe-grade random copolymerized polypropylene resin, 0.1 part of modified white graphene, 0.1 part of hindered phenol antioxidant 1010 and 0.1 part of stearic acid by weight parts respectively through a high-speed mixer Mix evenly for 10 minutes;

[0031] Step 3) Preparation of masterbatch: Melt and extrude the uniformly mixed raw materials in step 2) through a twin-screw extruder. Modified white graphene polypropylene masterbatch;

[0032] Step 4) Extrusion molding: Extrude the modified white graphene polypropylene masterbatch obtained in step 3) through a pipe extruder at a temperature of 150°C to obtain a finished product of modified white graphene composite polypropylene pipe .

Embodiment 2

[0034] Step 1) Preparation of modified white graphene: select 5-10 layers of white graphene to soak in 0.1% oleylamine aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0035] Step 2) Blending: Weigh 100 parts of pipe grade random copolymerized polypropylene resin, 1 part of modified white graphene, 0.3 part of hindered phenol antioxidant 1010 and 0.3 part of polyethylene wax by high-speed mixer Mix evenly for 10 minutes;

[0036] Step 3) Preparation of masterbatch: Melt and extrude the uniformly mixed raw materials in step 2) through a twin-screw extruder. Modified white graphene polypropylene masterbatch;

[0037] Step 4) Extrusion molding: Extrude the modified white graphene polypropylene masterbatch obtained in step 3) through a pipe extruder at a temperature of 155°C to obtain a finished product of modified white graphene composite polypropylene pipe .

Embodiment 3

[0039] Step 1) Preparation of modified white graphene: select 5-10 layers of white graphene to soak in 0.4% oleylamine aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0040] Step 2) Blending: Weigh 100 parts of pipe grade homopolypropylene resin, 3 parts of modified white graphene, 0.5 part of phosphite antioxidant 168 and 0.5 part of stearic acid by weight parts respectively through a high-speed mixer Mix evenly for 15 minutes;

[0041] Step 3) Preparation of masterbatch: Melt and extrude the uniformly mixed raw materials in step 2) through a twin-screw extruder. Modified white graphene polypropylene masterbatch;

[0042] Step 4) Extrusion molding: Extrude the modified white graphene polypropylene masterbatch obtained in step 3) through a pipe extruder at a temperature of 160°C to obtain a finished product of modified white graphene composite polypropylene pipe .

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Abstract

The invention belongs to the technical field of plastic tube, and more specifically discloses a modified white graphene composite polypropylene tubular product. The modified white graphene composite polypropylene tubular product is composed of, by weight, 100 parts of polypropylene resin, 0.1 to 10 parts of modified white graphene, 0.05 to 1 part of an anti-oxidant, 0.05 to 1 part of a dispersant. The invention also discloses a preparation method of the modified white graphene composite polypropylene tubular product. The preparation method comprises following steps: preparation of modified white graphene, blending of modified white graphene and polypropylene resin, preparation of modified white graphene polypropylene master batch, and extrusion moulding. Compared with conventional polypropylene tubular product, the modified white graphene composite polypropylene tubular product possesses following advantages: 0 DEG C low temperature impact resistance is improved by 350% or higher, tensile break strength is increased by 30%, Vicat softening point is increased by 5 DEG C, oxygen permeability is reduced by 40%, both thermal conductivity and corrosion resistance are excellent, processing is convenient, cost is relatively low, and practicality is high.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a modified white graphene composite polypropylene pipe and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin produced by the polymerization of propylene. It is one of the five general-purpose plastics and is widely used in various high-performance pipes. Polypropylene has the advantages of low density, fatigue resistance, chemical corrosion resistance, stress crack resistance and easy molding and processing. The disadvantage is that it has poor low temperature impact resistance and is easy to age. [0003] As polypropylene pipes are more and more used in industrial piping systems such as cold and hot water systems, heating systems, transportation or discharge of chemical media in buildings, the pressure resistance and low temperature impact resistance, oxygen resistance, thermal The requirements for specific properties such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L53/00C08L23/06C08K9/04C08K7/00C08K3/38C08K5/134C08K5/09C08K5/526C09K5/14
CPCC09J11/04C09J183/06C08K3/38C08K9/04C08K13/06C08L23/06C08L27/06C08L23/12C08K5/09C08K5/1345C08K5/526C08K7/00C08K9/08C08L23/14C08L53/00C09K5/14C08K2003/385C08K2201/003C08K2201/006C08K2201/008C08K2201/011C08L2205/02C08L2205/025C08L2203/18C08L2201/08C08L2201/14C08L83/04C08K3/04C08K3/36C08K2003/265C08K5/544C08K5/5425C08L91/06C08L55/02C09J183/04C09K3/10
Inventor 段曦东赵涛楠
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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