High-dispersity high-concentration nylon-based halogen-free flame-retardant master batch and preparation method thereof

A flame-retardant masterbatch, high-concentration technology, applied in the field of polymer material preparation, can solve the problems of difficult processing, rough surface, poor fluidity, etc., and achieve the effects of good dispersion, smooth surface and good compatibility

Pending Publication Date: 2021-04-06
ZHEJIANG XUSEN NON HALOGEN SMOKE FLAME RETARDANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a high-concentration and highly dispersible nylon-based halogen-free flame-retardant masterbatch and its preparation method, and further solve the problem of poor fluidity and processing difficulties when the effective concentration of the flame-retardant masterbatch is above 65%. , surface roughness and problems such as degradation and yellowing in production

Method used

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  • High-dispersity high-concentration nylon-based halogen-free flame-retardant master batch and preparation method thereof
  • High-dispersity high-concentration nylon-based halogen-free flame-retardant master batch and preparation method thereof
  • High-dispersity high-concentration nylon-based halogen-free flame-retardant master batch and preparation method thereof

Examples

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preparation example Construction

[0034] The present invention also provides a method for preparing a high-concentration and highly dispersible nylon-based halogen-free flame-retardant masterbatch, which includes the following steps:

[0035] Step S1: Provide a nylon resin carrier, an organic hypophosphite, and a melamine derivative, wherein the mass percent content of the nylon resin carrier is 20% to 45%, and the mass percent content of the organic hypophosphite is 25% to 60% , the mass percent content of the melamine derivative is 15% to 40%;

[0036] Step S2: compound the organic hypophosphite and melamine derivatives in proportion to form a halogen-free flame retardant, and fully mix them in a mixing device;

[0037] Step S3: providing a lubricating dispersant and an anti-yellowing agent, the mass percentage content of the lubricating dispersant is 1%-5%, and the mass percentage content of the anti-yellowing agent is 0.5%-3%;

[0038] Step S4: Premix the granulated nylon resin carrier, lubricating disper...

Embodiment A1-A8 and comparative example 1-3

[0057] Examples A1-A8 and Comparative Examples 1-3 were prepared according to the mass ratio of each component in Table 1, and according to the following processing and preparation methods to prepare nylon-based halogen-free flame-retardant masterbatches. The preparation method is as follows:

[0058] (1) compound organic hypophosphite and melamine derivatives or metal oxides in proportion to form a halogen-free flame retardant, and fully mix them in a mixing device;

[0059] (2) Premix nylon carrier particles, lubricating dispersant, and anti-yellowing agent in a mixer in proportion, then add halogen-free flame retardant and mix evenly;

[0060] (3) Add the nylon premix into a twin-screw extruder, melt and blend, and extrude to obtain a halogen-free flame-retardant masterbatch.

[0061] Table 1 Formula and processing performance of nylon carrier flame retardant masterbatch

[0062]

[0063]

[0064] From the comparison of flame retardant masterbatch processing and perf...

Embodiment B1-B8

[0066] Add the nylon-based flame-retardant masterbatches with different concentrations of flame retardants processed in the above-mentioned examples A1-A8 to the glass fiber reinforced PA6 system to obtain flame-retardant glass fiber-reinforced nylon materials B1-B8, and the masterbatches in each embodiment , Nylon resin and glass fiber consumption and performance tests are listed in Table 2.

[0067] Table 2 Masterbatch Flame Retardant Glass Fiber Reinforced PA6 Material Formula and Properties

[0068]

[0069]

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Abstract

The invention discloses a high-dispersity high-concentration nylon-based halogen-free flame-retardant master batch and a preparation method thereof. The high-dispersity high-concentration nylon-based halogen-free flame-retardant master batch comprises the following components in parts by mass: 20%-45% of a nylon resin carrier and 25%-60% of organic hypophosphite, wherein the mass percentage content of the melamine derivative is 15%-40%, the relative viscosity of the nylon resin carrier is 1.8-3.0, and the effective concentration of the flame-retardant masterbatch is 50%-75%. By screening nylon resin, a lubricating dispersant and an anti-yellowing agent, high filling performance of the nylon carrier is achieved, the organic hypophosphite and melamine derivative compound flame retardant masterbatch is prepared, the effective concentration is 50%-75%, and the flame retardant efficiency is high. The invention also provides a preparation method of the halogen-free flame-retardant master batch.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a highly dispersible and high-concentration nylon-based halogen-free flame-retardant masterbatch and a preparation method thereof. Background technique [0002] Halogen-free flame-retardant nylon and glass fiber-reinforced nylon products have excellent mechanical and heat resistance properties, excellent electrical insulation properties, high flame-retardant efficiency, low smoke toxicity, etc., making them widely used in electrical appliances, electronic appliances, rails Widely used in transportation and other fields. Phosphorus nitrogen flame retardants are widely used in nylon and glass fiber reinforced nylon flame retardant modified materials due to their high flame retardant efficiency, halogen-free, and good electrical properties. The flame retardant mechanism of phosphorus nitrogen-based halogen-free flame retardants is the synergistic flame retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K5/00C08K5/5313C08K5/3492C08K5/20C08K5/103C08K5/134C08K5/526C08K5/3435C08J3/22C08J5/04
CPCC08J3/226C08J5/043C08J2477/02C08J2477/06C08K5/00C08K5/5313C08K5/34928C08K5/20C08K5/103C08K5/1345C08K5/526C08K5/3435C08J2377/02
Inventor 庄严李金玉朱顺吉李四新
Owner ZHEJIANG XUSEN NON HALOGEN SMOKE FLAME RETARDANT CO LTD
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