Diurea-based wax aggregates and preparation method thereof

A diurea-based, collective technology, applied in the field of phase change energy storage, can solve problems such as use restrictions, achieve the effects of increasing the dropping point, solving the high temperature flow and melting out, and being easy to promote

Inactive Publication Date: 2020-03-24
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the wax aggregates prepared by the existing wax non-flowing technology have changed the state of the wax, and some have increased the melting point of the wax, but in some special cases, their use is still limited

Method used

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  • Diurea-based wax aggregates and preparation method thereof
  • Diurea-based wax aggregates and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Heat 25.5g of 50# paraffin and 2.8g of base oil HVIH 150BSM to 85°C, add 8.07g of octadecylamine to it, stir well to dissolve completely, and obtain an organic amine system;

[0043] Heat 22.28g of 50# paraffin and 2.5g of base oil HVIH 150BSM to 79°C, add 3.75g of MDI into it, stir it evenly to dissolve it, and obtain the MDI system;

[0044] Add the MDI system to the organic amine system, stir evenly, and raise the temperature to 99°C for 30 minutes. Continue to stir and raise the temperature to 190°C, react for 3 hours, stop heating, and stand to cool to obtain the product.

Embodiment 2

[0046] Heat 64g of 50# paraffin and 16g of base oil HVIH 150BSM to 79°C, add 17.7g of octadecylamine and 7g of p-toluidine, stir evenly to dissolve completely, and obtain an organic amine system;

[0047] Heat 63g of 50# paraffin and 16g of base oil HVIH 150BSM to 79°C, add 18g of MDI into it, stir evenly to dissolve completely, and obtain the MDI system;

[0048] Add the MDI system to the organic amine system, stir evenly, and raise the temperature to 99°C for 30 minutes. Continue to stir and heat up to 190°C, react for 3 hours, stop heating, cool down to 100°C, add 0.3g polymethacrylate, stir evenly, let stand and cool to obtain the product.

Embodiment 3

[0050] Heat 14g of 60# paraffin and 14g of base oil HVI400 to 65°C, add 5.6g of dodecylamine, stir evenly to dissolve completely, and obtain an organic amine system;

[0051] Heat 12g of 60# paraffin and 12g of base oil HVI400 to 65°C, add 2.6g of TDI to it, stir evenly to dissolve completely, and obtain the TDI system;

[0052] Add the TDI system to the organic amine system, stir evenly, and raise the temperature to 85°C for 30 minutes. Continue to stir and raise the temperature to 180°C, react for 2 hours, stop heating, and stand to cool to obtain the product.

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Abstract

The invention discloses a diurea-based wax aggregate and a preparation method thereof. The diurea-based wax aggregate comprises the following raw materials in parts by mass: 0-90 parts of lubricant base oil, 5-95 parts of wax, 0-10 parts of additive and 5-35 parts of diurea-based thickener. The preparation method of the diurea-based wax aggregate comprises the step of thickening a wax-base oil system via the diurea-based thickener obtained by reaction of diisocyanate and organic monamine. The prepared diurea-based wax aggregate has high dropping point and small oil separation quantity, is non-flowing semi-fluid within the range above the melting point of the wax to 250 DEG C, improves the dropping point of the wax, and can effectively solve the problem of high-temperature flowing melting of wax in many fields.

Description

technical field [0001] The invention relates to the technical field of phase change energy storage, in particular to a diurea-based wax aggregate and a preparation method thereof. Background technique [0002] Nowadays, waxes are widely used in various fields, but the inherently low melting point of wax limits its application in some variable and extreme environments. It is easy to separate from the system and high temperature above the melting point of wax The phenomenon of flowing and melting will destroy the uniformity and performance of the inherent system. [0003] People have done a lot of work to solve the problem of wax flowing and melting at high temperature. Qinglong Zhang et al. (Systematic investigation on shape stability of high-efficiency SEBS / paraffinform-stable phase change materials [J]. Solar Energy Materials & Solar Cells, 2013, 118:54–60) used styrene-B-(ethylene-co-butylene (ene)-block-styrene triblock copolymer (SEBS) was used as a support material, a...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor赵天波李红宇罗观郑保辉丁洪晶王丽丽
OwnerINST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS