High-performance rotational moulding type urea box and preparation method thereof

A rotomolding, high-performance technology, applied in the field of high-performance rotomolding urea tank and its preparation, can solve the problems of burning, restricting the use of linear low-density polyethylene composite materials, human injury, etc., to increase compatibility, The effect of improving electrical conductivity and reducing surface energy

Inactive Publication Date: 2018-07-06
刘俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the invention patent of application number CN201110144432.6, a modified linear low density polyethylene composite material is introduced, which is composed of corn starch, linear low density polyethylene (LLDPE), inorganic filler and plasticizer, and is biodegradable. It can reduce environmental pollution, has good water resistance, dimensional stability and good mechanical properties, but it is only suitable for the packaging industry, which greatly limits the use of linear low density polyethylene composite materials
In the invention patent of application number CN201010604648.1, a high-strength and durable rotomolded automotive urea tank is introduced, which is composed of masterbatch and linear low-density polyethylene. The masterbatch components are linear low-density polyethylene, high-density polyethylene, POE , calcium stearate, antioxidant 1010, antioxidant 168, and antistatic agent—hydroxyethyl alkylamine, which has a long service life and is suitable for use in high temperature and severe cold regions, and the preparation method is simple and easy. Mass production, however, most of the hydroxyethyl alkylamines are flammable, and there is a danger of burning when exposed to open flames and high temperatures, and at the same time have certain harm to the human body

Method used

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  • High-performance rotational moulding type urea box and preparation method thereof
  • High-performance rotational moulding type urea box and preparation method thereof
  • High-performance rotational moulding type urea box and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the high-performance rotomolded urea tank is as follows:

[0036] The masterbatch and linear low density polyethylene are mixed in a mixer at a ratio of 1:10, and then they are ground into powder by a grinder and then rotomolded.

[0037] The concrete preparation method of masterbatch is as follows:

[0038] (1) Put 120 parts by weight of linear low-density polyethylene resin, 2 parts by weight of functional additives and 1 part by weight of filler into the internal mixer of the torque rheometer and blend for 0.5 h, the blending temperature is 150 ° C, and then sequentially Add 0.5 parts by weight of antioxidant, 0.5 parts by weight of flame retardant and 0.2 parts by weight of lubricant, blend for 1 hour and discharge;

[0039] (2) Extrude in a twin-screw extruder and pelletize to obtain a master batch. The extrusion process conditions are: screw temperature 90°C in the first zone, 130°C in the second zone, 150°C in the third zone, 150°C in t...

Embodiment 2

[0051] A kind of preparation method of high-performance rotomoulding type urea tank is as follows:

[0052] The masterbatch and linear low density polyethylene are mixed in a mixer at a ratio of 1:3, and then ground into a powder of 30-40 mesh by a grinder, and then rotomolded.

[0053] The concrete preparation method of masterbatch is as follows:

[0054] (1) Put 100 parts by weight of linear low density polyethylene resin, 10 parts by weight of functional additives and 3 parts by weight of filler into the internal mixer of the torque rheometer and blend for 1 hour at a blending temperature of 150°C, and then add 2 parts by weight of antioxidant, 2 parts by weight of flame retardant and 1 part by weight of lubricant are blended for 2 hours and discharged;

[0055] (2) Extrude in a twin-screw extruder and pelletize to obtain a master batch. The extrusion process conditions are: screw temperature 100°C in zone 1, 130°C in zone 2, 155°C in zone 3, 155°C in zone 4, and zone 5 1...

Embodiment 3

[0067] A kind of preparation method of high-performance rotomoulding type urea tank is as follows:

[0068] The masterbatch and linear low density polyethylene are mixed in a mixer at a ratio of 1:3, and then they are ground into powder by a grinder and then rotomolded.

[0069] The concrete preparation method of masterbatch is as follows:

[0070] (1) Put 100 parts by weight of linear low-density polyethylene resin, 15 parts by weight of functional additives and 3 parts by weight of filler into the internal mixer of the torque rheometer and blend for 2 hours at a blending temperature of 130°C, and then add 5 parts by weight of antioxidant, 2 parts by weight of flame retardant and 1 part by weight of lubricant are blended for 2 hours and discharged;

[0071] (2) Extrude in a twin-screw extruder and pelletize to obtain a master batch. The extrusion process conditions are: screw temperature 110°C in zone 1, 145°C in zone 2, 160°C in zone 3, 160°C in zone 4, and zone 5 170°C. ...

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Abstract

The invention provides a high-performance rotational moulding type urea box and a preparation method thereof. The high-performance rotational moulding type urea box is prepared from the raw materialsof a master batch and linear low density polyethylene resin, wherein the master batch is prepared from the components of, in parts by weight, 100-120 parts of linear low density polyethylene resin, 2-15 parts of functional assistants, 1-3 parts of fillers, 0.5-5 parts of antioxidants, 0.5-2 parts of flame retardants and 0.2-1 part of lubricating agent. The high-performance rotational moulding typeurea box has the characteristics of being long in service life, good in anti-static effect and excellent in mechanical performance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-performance rotationally molded urea tank and a preparation method thereof. Background technique [0002] Rotational molding is to add resin into the mold, then heat the mold and make it rotate continuously along two mutually perpendicular axes. The resin in the mold is gradually and evenly coated and melted and adhered to the inner surface of the mold under the action of gravity and heat. Form the desired shape, then cool the mold and demould to obtain the product. As an auto part, the urea tank is often prepared by rotational molding, and the performance of the resin often determines the overall performance of the urea tank. [0003] In the invention patent of application number CN201110144432.6, a modified linear low density polyethylene composite material is introduced, which is composed of corn starch, linear low density polyethylene (LLDPE), inorganic fill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L79/04C08K13/06C08K9/06C08K7/06C08K3/22C08K3/26C08J3/22
CPCC08J3/226C08J2323/08C08J2423/08C08K7/06C08K9/06C08K13/06C08K2003/2224C08K2003/2227C08K2003/265C08K2201/011
Inventor 谢贤德
Owner 刘俊
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