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Preparation method of cylindrical octabromo ether particles

A technology of octabromoether and cylindrical shape, which is applied in the field of preparation of cylindrical octabromoether granules, which can solve the problems of granulation equipment blockage, screw sticking, low melting point of octabromoether, etc., to reduce production operation and maintenance costs and reduce production The effect of device operation and product quality stability

Active Publication Date: 2021-03-09
山东迈特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the low melting point of octabromoether products, it is easy to agglomerate under the action of external force, and has a certain viscosity, the conventional octabromoether granulation method is easy to chemicalize
The applicant found that during the granulation process of octabromoether, the adhesion between octabromoether and the screw in the extruder is an important reason for the blockage of its granulation equipment
At the same time, after the extruder equipment is blocked, manual cleaning is required, which is difficult; and impurities are easily mixed in during the cleaning process; because impurities cannot be melted and processed, the quality of octabromoether particles often decreases or even does not meet product quality standards , greatly increasing production operation and maintenance costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A preparation method of cylindrical octabromoether particles, comprising the steps of:

[0050] (1) Add a predetermined amount of water to the octabromoether product and mix evenly to obtain a mixed material;

[0051] (2) Send the conveying mixture into the extruder according to the predetermined feeding speed, and extrude and granulate;

[0052] (3) Air-cool the extruded octabromoether particles to shape the extruded octabromoether particles.

[0053] The moisture content of the mixed material is 30%wt.

[0054] The feed rate is 300Kg / h.

[0055] The air cooling, the air volume is 200M 3 / h.

[0056] The extruder is a twin-screw extruder.

[0057] The screw of the extruder includes a screw shaft and a helical blade.

[0058] Several helical blades arranged at equal intervals are arranged on the outside of the screw shaft.

[0059] Described screw rod is made of 45# steel.

[0060] The screw rod is obtained by firstly surface-treating the outer surface, then ult...

Embodiment 2

[0090] A preparation method of cylindrical octabromoether particles, comprising the steps of:

[0091] (1) Add a predetermined amount of water to the octabromoether product and mix evenly to obtain a mixed material;

[0092] (2) Send the conveying mixture into the extruder according to the predetermined feeding speed, and extrude and granulate;

[0093] (3) Air-cool the extruded octabromoether particles to shape the extruded octabromoether particles.

[0094] The moisture content of the mixed material is 32%wt.

[0095] The feed rate is 330Kg / h.

[0096] The air cooling, the air volume is 500M 3 / h.

[0097] The extruder is a twin-screw extruder.

[0098] The screw of the extruder includes a screw shaft and a helical blade.

[0099] Several helical blades arranged at equal intervals are arranged on the outside of the screw shaft.

[0100] Described screw rod is made of 45# steel.

[0101] The screw rod is obtained by firstly surface-treating the outer surface, then ult...

Embodiment 3

[0131] A preparation method of cylindrical octabromoether particles, comprising the steps of:

[0132] (1) Add a predetermined amount of water to the octabromoether product and mix evenly to obtain a mixed material;

[0133] (2) Send the conveying mixture into the extruder according to the predetermined feeding speed, and extrude and granulate;

[0134] (3) Air-cool the extruded octabromoether particles to shape the extruded octabromoether particles.

[0135] The moisture content of the mixed material is 35%wt.

[0136] The feed rate is 400Kg / h.

[0137] The air cooling, the air volume is 200M 3 / h.

[0138] The extruder is a twin-screw extruder.

[0139] The screw of the extruder includes a screw shaft and a helical blade.

[0140] Several helical blades arranged at equal intervals are arranged on the outside of the screw shaft.

[0141] Described screw rod is made of 45# steel.

[0142] The screw rod is obtained by firstly surface-treating the outer surface, then ult...

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Abstract

The invention relates to a preparation method of cylindrical octabromo ether particles. The method comprises the following steps: pretreating an octabromo ether product, carrying out extrusion granulation by a banded extruder at a preset feeding speed, and carrying out air-cooling molding on the extruded octabromo ether particles. The method has the beneficial effects that in the granulation process, the phenomenon that the octabromo ether is bonded with a screw rod in granulation equipment is avoided; the blockage phenomenon of the octabromo ether granulation equipment is effectively avoided;the operation and maintenance cost of a production device is effectively reduced, and large-scale continuous production can be adapted; the hardness of a screw rod of the banded extruder is 62-67 HRC, and the durability is high; and continuous granulation production is carried out for 10,000 hours, and the coating loss of the screw rod of the banded extruder is lower than 0.2%.

Description

technical field [0001] The invention relates to the field of octabromoether, in particular to a method for preparing cylindrical octabromoether particles. Background technique [0002] In recent years, with the rapid development of the modern synthetic industry and the improvement of fire safety awareness, the country has passed legislation to force the use of flame retardant materials in various industries. With the development of China's synthetic materials industry and the continuous expansion of application fields, flame retardants have been widely used in various fields such as construction, textiles, plastics, electronic appliances, transportation, aerospace, daily furniture, interior decoration, basic necessities of life, etc. applied and played a huge role. [0003] my country's plastics industry will undergo major structural adjustments. In the future, flame-retardant plastics will increase, and stricter flame-retardant requirements will be imposed on plastics. The...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29C48/05B29C48/505C08J3/12B05D5/08B05D7/24C21D1/09
CPCB29B9/06B29C48/05B29C48/509B29C48/507C08J3/128C08J3/126B05D7/24B05D5/083C21D1/09
Inventor 王盛海郭建树赵震
Owner 山东迈特新材料科技有限公司