Preparation method of antioxidant masterbatch based on mbz

A technology of antioxidant and masterbatch, which is applied in the field of preparation of antioxidant masterbatch, can solve the problems of cable breakdown appearance, defects, poor long-term thermal aging resistance of cable materials, etc., to facilitate transportation and storage, The effect of reducing dust generation

Active Publication Date: 2021-08-24
中广核高新核材科技(苏州)有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

[0005] In short, the following problems exist in the current production process of antioxidant masterbatch: the dispersibility of MBZ antioxidant in the masterbatch needs to be improved, impurity particles cause cable breakdown or appearance defects, and cables prepared by using antioxidant masterbatch The material has poor long-term thermal aging resistance

Method used

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  • Preparation method of antioxidant masterbatch based on mbz
  • Preparation method of antioxidant masterbatch based on mbz
  • Preparation method of antioxidant masterbatch based on mbz

Examples

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Embodiment 1

[0036] A preparation method of the antioxidant masterbatch based on MBZ of the present invention, by weight, the antioxidant masterbatch includes the following components in mass ratio: 30-40 parts of MBZ, 30-40 parts of industrial ethanol, base material 100 parts of resin, 20-30 parts of nanometer calcium carbonate. Antioxidant masterbatch is plasticized and granulated by Buss granulator, which specifically includes the following steps:

[0037] (1) MBZ (with a fineness of about 600 mesh) and industrial ethanol are dissolved in a 5L large round bottom flask according to the mass ratio of MBZ: ethanol = 1:1, and the dissolution process is heated while stirring on the constant temperature electric heating mantle, controlled Stir for 8-10 minutes at a temperature of 70-80°C until a uniform viscous solution is formed, and inject it into the 2# liquid feeding tank of the Booth granulator for use.

[0038] (2) Put substrate resin linear low density polyethylene LLDPE7042 (melt ind...

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Abstract

The invention relates to a preparation method of MBZ-based antioxidant masterbatch, which comprises the following steps: dissolving MBZ in an organic solvent to obtain MBZ solution; mixing resin and nano-calcium carbonate to obtain a mixture; adopting plasticizing granulation The process plasticizes and granulates the MBZ solution and the mixture. The mixture is fed in the front section, and the MBZ solution is fed in the middle section. The plasticization and granulation process includes a feeding section, a plasticizing section, a homogenization section, section, exhaust section and conveying section; the processing temperature of each area is as follows: feeding section: 110-120°C, plasticizing section: 135-170°C, homogenizing section: 170-180°C, exhaust section: 180-185°C , Conveyor section: 180-180°C; granulation is performed after granulation is completed, and the MBZ-based antioxidant masterbatch is obtained after drying.

Description

technical field [0001] The invention relates to a production process of an antioxidant masterbatch, in particular to a preparation method of an MBZ-based antioxidant masterbatch. Background technique [0002] Antioxidant masterbatch is an anti-aging masterbatch used in flame-retardant polyolefin cable materials to improve product resistance to thermal oxygen aging and copper aging. At present, the antioxidant components of some commonly used antioxidant masterbatches are compounded Antioxidant, which contains antioxidant MBZ (2-mercaptobenzimidazole zinc salt) component. [0003] The commonly used antioxidant masterbatch production method in this industry is to mix the antioxidant with resin, flame retardant, crosslinking agent, filler and other additives, and then enter the twin-screw plastic granulation. Although the cost of this method is low and the process steps are simple, it is unavoidable for the anti-aging agent MBZ to often appear non-melting white spots, resultin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/378C08K3/26C08J3/22B29C48/395B29C48/92
CPCB29C48/397B29C48/92B29C2948/92704C08J3/226C08J2323/08C08K5/378C08K2003/265C08K2201/003C08K2201/011
Inventor 曾光新费楚然单永东李凤彪
Owner 中广核高新核材科技(苏州)有限公司
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