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Halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high-fluidity high-oxygen-index glass fiber reinforced halogen-free flame-retardant polyamide

A technology of flame retardant polyamide and flame retardant, which is applied in the field of halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high flow high oxygen index glass fiber reinforced halogen-free flame retardant polyamide, which can solve the problem of flame retardant Low combustion efficiency, unable to meet the application requirements of high flame retardancy, etc., to achieve the effect of excellent mechanical properties

Active Publication Date: 2020-04-28
SUZHOU HSM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above three polyphosphoramides contain phosphorus, nitrogen and benzene rings in the main chain, their flame retardant efficiency is slightly low and cannot meet the application requirements of high flame retardant properties.

Method used

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  • Halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high-fluidity high-oxygen-index glass fiber reinforced halogen-free flame-retardant polyamide
  • Halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high-fluidity high-oxygen-index glass fiber reinforced halogen-free flame-retardant polyamide
  • Halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high-fluidity high-oxygen-index glass fiber reinforced halogen-free flame-retardant polyamide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] 70% by weight of sulfone-based polyphosphoramide (n=300), 25% by weight of triphenyl phosphate, and 5% by weight of zinc borate are uniformly mixed by a high-speed mixer to obtain a flame retardant composition powder. The above-mentioned flame-retardant composition powder agent is added to PA6 (M2500) resin at a concentration of 60 wt%, and the flame-retardant masterbatch is obtained by extruding and granulating through a twin-screw extruder at 220-250°C.

[0068] Based on the total weight of raw materials, 15wt% of the flame retardant masterbatch prepared in this implementation, 30wt% of glass fiber (GF), 55wt% of PA6 (M2500) and antioxidant 1098 / 168

[0069] (0.2wt% / 0.2wt%) blended, extruded and pelletized by a twin-screw extruder to obtain a halogen-free flame-retardant polyamide with high flow and high oxygen index.

[0070] After testing, the mechanical properties, melt index and limiting oxygen index data of the halogen-free flame-retardant polyamide prepared in this exa...

Embodiment 2

[0100] The raw material ratio and preparation process of the flame retardant composition, flame retardant masterbatch and halogen-free flame-retardant polyamide are exactly the same as in Example 1, except that the sulfone-based polyphosphoramide is used as the raw material, and n is selected from 500.

[0101] After testing, the mechanical properties, melt index and limiting oxygen index data of the halogen-free flame-retardant polyamide prepared in this example are listed in Table 4 below.

Embodiment 3

[0103] The raw material ratio and preparation process of the flame retardant composition, flame retardant masterbatch and halogen-free flame retardant polyamide are exactly the same as those in Example 1, except that the sulfone-based polyphosphoramide used as the raw material is replaced with alkyl polyphosphorus Amide (n is selected from 300).

[0104] After testing, the mechanical properties, melt index and limiting oxygen index data of the halogen-free flame-retardant polyamide prepared in this example are listed in Table 4 below.

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Abstract

The invention discloses a halogen-free flame retardant composition, halogen-free flame retardant masterbatch and high-fluidity high-oxygen-index glass fiber reinforced halogen-free flame retardant polyamide. The halogen-free flame retardant composition comprises the following raw materials in percentage by weight: 50-80% of polyphosphamide; 10-40% of phosphate ester; and 5%-20% of borate, whereinthe general structural formula of the polyphosphamide is shown as the following formula (I). The halogen-free flame retardant composition disclosed by the invention is used for preparing the flame-retardant masterbatch, then the flame-retardant masterbatch is further processed into a special material for the glass fiber reinforced halogen-free flame-retardant polyamide, and tests show that the special material has a limit oxygen index of more than or equal to 30, a melt index of more than or equal to 35 and excellent mechanical properties, has excellent mechanical properties, flame retardancyand flowability, and meets the requirements of customers. In the formula, R is selected from -CH2- or -O-; n is selected from 300 to 500.

Description

Technical field [0001] The invention belongs to the technical field of halogen-free flame retardants and their applications, and specifically relates to a halogen-free flame retardant composition, a halogen-free flame retardant masterbatch and a high-flow high oxygen index glass fiber reinforced halogen-free flame-retardant polyamide. Background technique [0002] Polyamide (PA), commonly known as nylon, is a general term for polymers containing amide groups in the repeating units of the macromolecular backbone. Polyamide, as a large amount of engineering plastic, has excellent mechanical properties, heat resistance, weather resistance and electrical insulation, and has good self-lubricating and abrasion resistance; therefore, it is widely used in machinery, automobiles, electrical appliances, and textile equipment , Chemical equipment, aviation, metallurgy and other fields. [0003] Polyphosphoramide is a polymer containing a phosphoramide structure. The structural formula not on...

Claims

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Application Information

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IPC IPC(8): C08L85/02C08K5/523C08K3/38C08L77/02C08K13/04C08K7/14C08J3/22C08J5/04
CPCC08J3/226C08J5/043C08J2377/02C08J2477/02C08J2485/02C08K3/38C08K5/523C08K2003/387C08L2201/02C08L2201/22C08L85/02
Inventor 台启龙赵进文陈丽娟
Owner SUZHOU HSM TECH CO LTD
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