Plastic master batch and preparation method and application thereof

A plastic masterbatch and antioxidant technology, applied in the field of plastic masterbatch and its preparation, can solve the problems of large density difference of polymer matrix, high thermal conductivity, high oxygen resistance performance, product safety risk, etc., and achieve melt strength And the effect of improving the gel quality and good oxygen barrier performance

Pending Publication Date: 2020-06-05
新奥(内蒙古)石墨烯材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The layer-to-layer interaction of graphene nanosheets is strong, easy to stack and agglomerate together, it is difficult to fully peel off and evenly disperse in the polymer matrix, and cannot effectively build a uniform and stable network. The main obstacle to exert high thermal conductivity and high oxygen resistance performance in the capillary network air conditioning system;
[0005] (2) The density of graphene powder is low, and the density difference between the polymer matrix and the polymer matrix is ​​large. It is difficult to achieve high-concentration filling in the process of blending and granulation, which makes the processing of masterbatch difficult, and it is easy to have some high or low concentrations. However, it is difficult to stably realize high-content filling of graphene;
[0006] (3) The traditional capillary network uses PPR, PE, PB and other materials, the thermal conductivity is 0.2-0.3W/mK, and the thermal conductivity is poor, resulting in low heating or cooling efficiency, and cannot quickly transfer the cold and heat in the system to the outside world , resulting in low-efficiency circulation of media and waste of energy, which limits the popularization and application of

Method used

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  • Plastic master batch and preparation method and application thereof
  • Plastic master batch and preparation method and application thereof
  • Plastic master batch and preparation method and application thereof

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preparation example Construction

[0052] According to the method for preparing plastic master batches according to the embodiments of the present invention, at a first predetermined temperature, by mixing graphene, fillers, coating agents, dispersants, antioxidants, crosslinking agents, and auxiliary crosslinking agents for the first predetermined temperature time, and then at a second predetermined temperature, melt-blending the mixed filler with the polymer matrix for a second predetermined time, and finally at a third predetermined temperature, the initial graphene-modified plastic mass or masterbatch Melt-blending again for a third predetermined time, and extruding and pelletizing to obtain plastic masterbatches, that is, graphene and other fillers and polymer matrix are pre-dispersed-melt-blended-secondary melt-blended granulated three The step-by-step route enables graphene and other fillers to achieve sufficient exfoliation and uniform dispersion in the polymer matrix, thereby obtaining a plastic masterb...

Embodiment 1

[0063] The method for preparing plastic masterbatch, comprises the following steps:

[0064] (1) 20 parts of graphene prepared by mechanical exfoliation (radial size is 2-5 μm, thickness is 2-4 nm), 5 parts of micropowder graphite, 10 parts of styrene-ethylene-butylene-styrene block copolymer (SEBS), 5 parts of vinyl bis stearamide (EBS), 0.5 parts of antioxidant 1010, 0.1 part of dicumyl peroxide (DCP), 1 part of triallyl isocyanurate (TAIC) Add it into a high-speed mixer, mix at 60°C for 20 minutes, and rotate at 500 rpm to obtain a mixed filler that has been pre-dispersed and coated;

[0065] (2) The mixed filler obtained above and 58.4 parts of random copolymerized polypropylene resin (PPR) particles were added to an overturning internal mixer, and mixed for 20 minutes at 200 ° C to obtain an initial graphene-modified plastic mass;

[0066] (3) The initial graphene-modified plastic obtained above was granulated through a twin-screw extruder, the extrusion temperature was ...

Embodiment 2

[0068] The method for preparing plastic masterbatch, comprises the following steps:

[0069] (1) 40 parts of graphene prepared by mechanical exfoliation (radial size is 2-5 μm, thickness is 2-4 nm), 10 parts of micropowder graphite, 20 parts of styrene-ethylene-butylene-styrene block copolymer (SEBS), 10 parts of vinyl bis stearamide (EBS), 0.3 parts of antioxidant 1010, 0.2 parts of dicumyl peroxide (DCP), 2 parts of triallyl isocyanurate (TAIC) Add it into a high-speed mixer, mix at 60°C for 20 minutes, and rotate at 500 rpm to obtain a mixed filler that has been pre-dispersed and coated;

[0070] (2) The mixed filler obtained above and 17.5 parts of random copolymerized polypropylene resin (PPR) particles were added to an overturning internal mixer, and mixed for 20 minutes at 200 ° C to obtain an initial graphene-modified plastic mass;

[0071] (3) The initial graphene-modified plastic mass obtained above was granulated through a twin-screw extruder at an extrusion temper...

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Abstract

The invention discloses a plastic master batch, and a preparation method and application thereof. The plastic master batch comprises a polymer matrix, graphene, a filling material, a coating agent, adispersant, an antioxidant, a crosslinking agent and an assistant crosslinking agent. Therefore, the plastic master batch has the characteristics of high thermal conductivity, high oxygen resistance,easiness in welding and uniform dispersion of graphene; and therefore, a capillary network prepared from the plastic master batch has the advantages of high thermal conductivity, high oxygen resistance and easiness in welding, so that cold and heat in a system are quickly transferred to the outside, efficient circulation of a medium is realized, energy waste is avoided, and popularization and application of a capillary network air conditioning system are facilitated.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and in particular relates to a plastic masterbatch and a preparation method and application thereof. Background technique [0002] The capillary network air conditioning system is a water-carrying medium. The capillary network (generally 4.3mm in diameter) or the cooling and heating module is used as the main heat transfer device to change the temperature of the building wall or maintain the temperature of the structure, so as to achieve the purpose of indoor cooling and heating. air conditioning system. The air-conditioning system is an invisible air-conditioning system that can be laid on ceilings, walls and floors, and mainly uses surface heat transfer to change the indoor temperature. It is currently the most advanced and most comfortable air-conditioning technology. Compared with metal tubes, plastic capillary products have a lower cost under the same radiation capacity, and at the...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/06C08L23/20C08K13/06C08K9/10C08K3/04C08K7/24C08J3/22F25B41/06F25B41/37
CPCC08J3/226C08J2423/14C08J2423/06C08J2423/20C08K13/06C08K9/10C08K3/042C08K3/04C08K2201/003C08K3/041C08K2201/011C08K7/24F25B41/37
Inventor 朱亚坤翟乐樊振兴段春丽徐欢李金来
Owner 新奥(内蒙古)石墨烯材料有限公司
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