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Flame-resistant modified nylon 56 polymer and preparation method thereof

A technology for modifying nylon and polymers, which is applied in the field of flame-retardant modified nylon 56 polymers and its preparation. It can solve the problems of affecting the physical properties of polymers, the addition of large amounts, and the inability to solve the problems of nylon 56 melting and dripping, and achieve high resistance. Flammability, ease of modification and processing

Active Publication Date: 2016-11-09
优纤科技(丹东)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the flame retardant modification of nylon 56 is mostly obtained by mixing and kneading bromine-based, phosphorus-based, nitrogen-based or inorganic additive flame retardants using a twin-screw extruder. The addition of a large amount often affects the physical properties of the polymer. , easy to precipitate, and basically unable to solve the problem of molten dripping of nylon 56

Method used

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  • Flame-resistant modified nylon 56 polymer and preparation method thereof
  • Flame-resistant modified nylon 56 polymer and preparation method thereof
  • Flame-resistant modified nylon 56 polymer and preparation method thereof

Examples

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Embodiment 1

[0054] Embodiment 1, prepare flame-retardant modified nylon 56 polymer

[0055] Under the protection of nitrogen atmosphere, bio-based pentamethylenediamine was dissolved in deionized water, adipic acid was gradually added, and the molar ratio of bio-based pentamethylenediamine to adipic acid was controlled to be 1.05:1, and a mass concentration of 50% was prepared. Nylon 56 salt solution with a pH of 7.2. Prepared nylon 56 saline solution 5kg, the acetic acid solution of bio-based pentamethylenediamine (the mass percentage of bio-based pentamethylenediamine is 24%, its addition is the sum of bio-based pentamethylenediamine and adipic acid added mass 0.07%) 1.75g, flame retardant TL-A2 50g, flame retardant TL-B1 50g (((the amount of flame retardant added is 4% of the sum of the mass of bio-based pentamethylenediamine and adipic acid added)) and modified 125g of permanent melamine cyanurate (the addition amount is 5% of the sum of the mass of bio-based pentamethylenediamine an...

Embodiment 2

[0058] Embodiment 2, prepare flame-retardant modified nylon 56 polymer

[0059] Under the protection of nitrogen atmosphere, bio-based pentamethylenediamine was dissolved in deionized water, adipic acid was gradually added, and the molar ratio of bio-based pentamethylenediamine to adipic acid was controlled to be 1.2:1, and a mass concentration of 60% was prepared. Nylon 56 salt solution with a pH of 7.8. Prepared nylon 56 saline solution 10kg, acetic acid solution of bio-based pentamethylenediamine (the mass percentage of bio-based pentamethylenediamine is 24%, its addition is the sum of bio-based pentamethylenediamine and adipic acid) 0.08%) 5g, flame retardant TL-C1 480g (the addition is 8% of the sum of bio-based pentamethylenediamine and adipic acid) and modified melamine cyanurate 180g (the addition is bio-based Pentamethylenediamine and adipic acid (3% of the sum of the mass added) were added together into the reactor, and the temperature was kept at 235° C. and the pr...

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Abstract

The invention discloses a flame-resistant modified nylon 56 polymer and a preparation method thereof. The method comprises the following steps that 1, bio-based pentane diamine reacts with adipic acid in water under protection of nitrogen to obtain a nylon 56 saline solution, wherein bio-based pentane diamine is obtained by removing two carboxyl-terminated groups from lysine or lysinate under the action of lysine decarboxylase; 2, the nylon 56 saline solution, a molecular weight regulator and a flame retardant are added into a reaction vessel, pressure maintaining is conducted at the temperature of 210 DEG C to 240 DEG C under the pressure of 1.7 MPa to 1.85 MPa, the pressure in the reaction vessel is released, the temperature is increased to 265 DEG C to 275 DEG C, vacuumizing and stirring are conducted, and then the flame-resistant modified nylon 56 polymer is obtained. Compared with products such as common nylon 66 and nylon 6, the flame-resistant modified bio-based nylon 56 prepared through the method has the greatest advantages of achieving the flame retarding and melting drop resisting characteristics and being suitable for being used at high-temperature, high-humidity and high-voltage places, safe and environmentally friendly; in addition, due to the fact that the physical property is not obviously reduced in the modification process, so that subsequent further modifying, processing and manufacturing are conveniently conducted.

Description

technical field [0001] The invention relates to a flame-retardant modified nylon 56 polymer and a preparation method thereof. Background technique [0002] With the continuous increase of oil price, and in the environment of increasing energy crisis, it is particularly important to develop a new type of basic energy. Among the new energy sources, bio-energy has its unique advantages. The bio-based energy prepared by microbial technology has many advantages such as cleanness, cheapness, high stability, convenient cultivation, and rapid reproduction. Therefore, it has become the development direction of many chemical raw materials. [0003] Polyamide, commonly known as nylon, is an important product in chemical production, which can be widely used in clothing, medicine, military, industry, machinery and other fields. Among nylon chemical products, nylon 66 is a high-strength, high-temperature-resistant, and stable variety. It is a product synthesized from adipic acid and hex...

Claims

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Application Information

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IPC IPC(8): C08G69/42C08G69/44C08K9/00C08K5/3492
CPCC08G69/42C08G69/44C08K5/34928C08K9/00
Inventor 郝新敏鞠景堂赵鹏程樊丽君于广慧孙庆智陈晓
Owner 优纤科技(丹东)有限公司
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