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A kind of halogen-free flame-retardant PA6 nano-composite material and preparation method thereof

A nano-composite material and nano-flame retardant technology, applied in the field of halogen-free flame-retardant PA6 nano-composite materials and its preparation, can solve the problem of discounted flame-retardant effect, unsatisfactory mechanical properties and flame-retardant properties of PA6 modified materials And other problems, to achieve the effect of good mechanical properties, good flame retardant performance

Active Publication Date: 2016-02-03
广东奇德新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the usual flame retardant modification method is to add various flame retardant modifiers to the matrix. The general flame retardants are: halogen-based, phosphorus-based, phosphorus-nitrogen-based and inorganic flame retardants. However, due to The existence of glass fiber in PA6 causes the "candle wick" effect, and the flame retardant effect will be discounted
At the same time, due to various problems such as formula and process, the existing PA6 modified materials are not satisfactory in many aspects such as mechanical properties and flame retardancy.

Method used

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  • A kind of halogen-free flame-retardant PA6 nano-composite material and preparation method thereof
  • A kind of halogen-free flame-retardant PA6 nano-composite material and preparation method thereof
  • A kind of halogen-free flame-retardant PA6 nano-composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A halogen-free flame-retardant PA6 nano-composite material, the formula of which consists of:

[0022] Table 1:

[0023]

[0024] The halogen-free phosphorus nitrogen compound nano-flame retardant is prepared in the following way: 1) put urea, formaldehyde, nano-montmorillonite, and sodium hydroxide in a reaction kettle, heat and stir for 1-3 hours, 2) put Step 1) The prepared product is fully mixed with melamine cyanurate and silane coupling agent.

[0025] The molar ratio of urea and formaldehyde is 1:1.2; the mass ratio of nano-montmorillonite to (urea+formaldehyde) is 1:0.2; the amount of sodium hydroxide is 2% of the mass sum of urea and formaldehyde; step 2) Among them, the mass ratio of the product prepared in step 1), melamine cyanurate, and silane coupling agent KH550 is 0.5:3:0.1.

Embodiment 2

[0027] A halogen-free flame-retardant PA6 nano-composite material, the formula of which consists of:

[0028] Table 2:

[0029]

[0030] The halogen-free phosphorus nitrogen compound nano-flame retardant is prepared in the following way: 1) put urea, formaldehyde, nano-montmorillonite, and sodium hydroxide in a reaction kettle, heat and stir for 1-3 hours, 2) put Step 1) The prepared product is fully mixed with melamine cyanurate and silane coupling agent.

[0031] The molar ratio of urea and formaldehyde is 1:1.5; the mass ratio of nano-montmorillonite to (urea+formaldehyde) is 1:0.5; the amount of sodium hydroxide is 2% of the mass sum of urea and formaldehyde; step 2) Among them, the mass ratio of the product prepared in step 1), melamine cyanurate, and silane coupling agent KH550 is 0.8:3:0.2.

Embodiment 3

[0033] A halogen-free flame-retardant PA6 nano-composite material, the formula of which consists of:

[0034] table 3:

[0035]

[0036] The halogen-free phosphorus nitrogen compound nano-flame retardant is prepared as follows: 1) put urea, formaldehyde, nano-montmorillonite, and sodium hydroxide in a reaction kettle, heat and stir for 1-3 hours, 2) put Step 1) The prepared product is fully mixed with melamine cyanurate and silane coupling agent.

[0037] The molar ratio of urea and formaldehyde is 1:1.5; the mass ratio of nano-montmorillonite to (urea+formaldehyde) is 1:0.3; the amount of sodium hydroxide is 3% of the mass sum of urea and formaldehyde; step 2) Among them, the mass ratio of the product prepared in step 1), melamine cyanurate, and silane coupling agent KH550 is 1:3:0.3.

[0038] The method for preparing the compound material from the formula of the embodiment is as follows: mixing each raw material uniformly, then melt extruding and granulating.

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Abstract

The invention discloses a halogen-free flame-retardant PA6 nanocomposite material, which is composed of the following raw materials in parts by mass: 40-60 parts of PA6, 25-35 parts of glass fiber, and 15-20 parts of halogen-free phosphorus nitrogen It is a composite nano-flame retardant, 2-4 parts of a toughening agent, 0.1-0.3 parts of an antioxidant, and 0.5-2 parts of a processing aid; wherein, the halogen-free phosphorus nitrogen-based composite nano-flame retardant It is prepared in this way: 1) Put urea, formaldehyde, nano-montmorillonite, and sodium hydroxide in a reaction kettle, heat and stir for 1-3 hours, 2) Coupling the product prepared in step 1) with melamine salt and silane The agent can be mixed thoroughly. The PA6 composite material prepared by the invention has better flame-retardant performance, the flame-retardant level reaches the V0 level, and also has better mechanical properties.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant PA6 nanocomposite material and a preparation method thereof. Background technique [0002] Nylon is the general name of polyamide, and it is the extrusion resin with the largest output, the most varieties, the widest application and the best comprehensive performance among the five general-purpose engineering plastics. Among polyamide resins, nylon 6 and nylon 66 have the largest output and consumption, accounting for about 90% of the total polyamide. Nylon has outstanding characteristics in terms of mechanical, chemical, and thermal properties. [0003] Nano-montmorillonite is considered to be the best nano-product in the 20th century. It is easy to peel off into a sheet structure with a large specific surface area, but it is not obvious to use in the market. First, only a small part is peeled off in a general twin-screw. Not obvious; the second is to combine with substances that can play a syne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08K7/14C08K9/04C08K3/34C08K5/3492
CPCC08L77/02C08L2201/02C08L2201/22C08L23/0884C08K13/06C08K9/08C08K3/346C08K5/34928C08K7/14
Inventor 马元好饶德生陈云峰陈若垠
Owner 广东奇德新材料股份有限公司