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Low-corrosivity dialkyl phosphinate composition and application thereof

A technology of dialkyl phosphinate and alkyl phosphinate, which is applied in the field of flame retardants and can solve problems such as large negative effects and equipment corrosion

Active Publication Date: 2019-06-07
JIANGSU LISIDE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant mixture with aluminum diethylphosphinate as the main component synthesized by this method, due to the synthesis process and the physical properties of aluminum diethylphosphinate itself, aluminum diethylphosphinate is the main component. The dialkylphosphinate flame retardant mixture of the components still shows strong acidity, which will degrade the polymer and corrode the equipment, especially when the application system needs to undergo high temperature heating process, dialkylphosphinic acid The negative effects of the salt flame retardant mixture will be greater

Method used

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  • Low-corrosivity dialkyl phosphinate composition and application thereof
  • Low-corrosivity dialkyl phosphinate composition and application thereof
  • Low-corrosivity dialkyl phosphinate composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Mixing of halogen-free flame retardant systems

[0057] Add the pre-weighed components of the compound flame retardant system and other additives into the high mixer, start high-speed stirring, and stir for 10 minutes to complete the blending of the halogen-free flame retardant system and discharge.

[0058] (2) Extrusion granulation of materials

[0059] Set the temperature of each zone of the twin-screw extruder at a predetermined temperature. After the temperature stabilizes for 20 minutes, add the polymer substrate from the hopper, add the glass fiber through the glass fiber inlet, and feed the flame retardant powder through the powder feeding hole, and start The main machine and feeder complete the extrusion and granulation of materials. The granulated materials are sent to the silo through the air conveying system and dried.

[0060] (3) Application and testing of materials

[0061] The dried materials are injected into the injection molding machine to produce standar...

Embodiment 2

[0074] The implementation process is the same as in Example 1, except that aluminum sulfate is replaced with sodium sulfate. The ratio of the dialkyl phosphinate composition is shown in Table 1, and the components and test results of the flame retardant polymer are shown in Table 2.

Embodiment 3

[0076] The implementation process is the same as in Example 1, except that the sulfate is replaced with a mixed sulfate composed of two sulfates. The ratio of the dialkyl phosphinate composition is shown in Table 1, and the components and test results of the flame retardant polymer are shown in Table 2.

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Abstract

The invention discloses a low-corrosivity dialkyl phosphinate composition and application thereof. Raw materials of the corrosivity dialkyl phosphinate composition comprise, in percentage by weight, 99-99.999 wt% of dialkyl phosphinate mixture and 0.001-1 wt% of sulfate; the dialkyl phosphinate mixture at least comprises diethyl phosphinate; and the sulfate is selected from inorganic sulfate. Whenthe low-corrosivity dialkyl phosphinate composition is used individually or used in cooperation with other flame retardants, a polymer degrading effect can be reduced, and equipment corrosion is reduced.

Description

Technical field [0001] The invention relates to the technical field of flame retardants, in particular to a low-corrosive dialkylphosphinate composition and its application. Background technique [0002] Due to the high phosphorus content, the dialkyl phosphinate has good flame retardancy. At the same time, due to the introduction of alkyl groups in the molecular structure, its water repellency and thermal decomposition temperature are greatly improved compared to inorganic hypophosphites. Among the polymer materials, it will not migrate and absorb moisture, can withstand high processing temperatures, and will not cause the insulation performance of the material to decrease, and it has good compatibility with the matrix resin and can maintain the mechanical properties of the matrix material. Due to these characteristics as an excellent flame retardant, it has been widely used in high flame retardant, high processing temperature, high shear strength, high CTI value and other polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/5313C08K5/5317C08K3/30C08L77/06C08K13/04C08K7/14C08K3/38
Inventor 雷华李金忠曹燕
Owner JIANGSU LISIDE NEW MATERIAL
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