High-concentration engineering plastic flame-retardant master batch and preparation method thereof

A technology of engineering plastics and flame-retardant masterbatches, which is applied in the field of high-concentration engineering plastics flame-retardant masterbatches and its preparation, and can solve the problems of insufficient continuity and stability of feeding materials, insufficient dispersion of flame-retardant masterbatches, and flame-retardant masterbatches. Unable to produce and other problems, to achieve the effect of maintaining production continuity, reducing powder settlement, and low cost

Inactive Publication Date: 2021-08-17
江苏艾泰柯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing flame retardant masterbatches use flame retardants, dispersants, carrier resins, etc., and are generally prepared by intermittent banbury mixing and screw extruder granulation. This production method is an intermittent production process, and the stability of product quality needs to be improved. , secondly, the dispersion of the flame retardant masterbatch in the application is insufficient, which affects the quality of the product to be applied
And flame retardant masterbatches of carrier resins with high glass transition temperature or melting point (such as ABS PA PBT, etc.) cannot be produced
[0003] Existing methods for preparing flame retardant masterbatches also include mixing and granulating through continuous twin-screw extruders. The powder concentration in the preparation process of this preparation method is high, and feeding continuity and stability are insufficient (easy to bridge); The particle concentration is not high (generally not higher than 80%), which limits the application in the industry that requires high-concentration flame retardant masterbatches

Method used

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  • High-concentration engineering plastic flame-retardant master batch and preparation method thereof
  • High-concentration engineering plastic flame-retardant master batch and preparation method thereof
  • High-concentration engineering plastic flame-retardant master batch and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0032] (1) Put the raw materials into the mixer according to the proportioning ratio, and mix them;

[0033] (2) The dispersant is heated to melt, and then in the process of stirring and mixing in the mixer of step (1), the molten dispersant is atomized and sprayed to the mixer, together with the materials in step (1) at 400r / m The composition was obtained after mixing for 160s at the rotating speed of min;

[0034] (3) Extrude the composition obtained in step (2) through a twin-screw extruder, wherein the length-to-diameter ratio of the twin-screw extruder is 40:1-60:1, and the temperature is controlled in sections: the conveying section is 240°C, and the melting Section 250°C, metering section 250°C for melt extrusion granulation to obtain high-concentration engineering plastic flame retardant masterbatch;

[0035] (4) The melt-extruded material is fed into the single-screw extruder by the cone double feeder and extruded. The temperature of the twin-screw extruder is contro...

Embodiment 3

[0045] The flame retardant concentration of embodiment 3 and embodiment 4 is all at 90%, and the content of the brominated flame retardant in embodiment 3 is higher than embodiment 4, two embodiments have added modified sodium antimonate and di Antimony oxide, as can be seen from the production stability, the embodiment 4 has produced trace bridging, and the embodiment 3 stability that has added modified sodium antimonate is better than the embodiment 4 that does not add modified sodium antimonate, has illustrated Modified sodium antimonate has obvious advantages in improving the dispersibility of materials and improving production stability.

[0046]Adopt twin-screw mixing and single-screw extrusion granulation continuous production technology, continuous production, stable feeding, can produce high glass transition temperature or high melting point carrier resin (such as PBT, PA6) flame retardant masterbatch. The flame retardant masterbatch produced by continuous production ...

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Abstract

The invention belongs to the field of functional master batches, and particularly relates to a high-concentration engineering plastic flame-retardant master batch and a preparation method thereof, and the flame-retardant master batch comprises the following components by mass: 60%-75% of a brominated flame retardant, 10%-25% of a synergistic flame retardant, 5%-15% of carrier resin, and 1%-6% of a dispersant. The concentration of the engineering plastic flame-retardant master batch prepared by the preparation method is far higher than that in the prior art, and stable and continuous production can be realized.

Description

technical field [0001] The invention belongs to the field of functional masterbatches, and in particular relates to a high-concentration engineering plastic flame-retardant masterbatch, a preparation method and a preparation system thereof. Background technique [0002] Existing flame retardant masterbatches use flame retardants, dispersants, carrier resins, etc., and are generally prepared by intermittent banbury mixing and screw extruder granulation. This production method is an intermittent production process, and the stability of product quality needs to be improved. , Secondly, the dispersibility of the flame retardant masterbatch in the application is insufficient, which affects the quality of the product to be applied. And the flame retardant masterbatch of carrier resin (such as ABS PA PBT etc.) that glass transition temperature or high melting point can't be produced. [0003] Existing methods for preparing flame retardant masterbatches also include mixing and gran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/12C08L77/02C08L67/02C08L25/06C08L63/00C08K5/03C08K5/3492C08K3/22C08K3/24C08K9/06C08J3/22
CPCC08J3/226B29B9/06B29B9/12C08J2425/12C08J2477/02C08J2467/02C08J2425/06C08J2463/00C08K5/03C08K5/3492C08K3/2279C08K9/06C08K2003/2282
Inventor 胡付余庞成友张松
Owner 江苏艾泰柯新材料科技有限公司
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