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Zinc dimethyldithiocarbamate pre-dispersed mother colloidal particle and preparation method thereof

A technology of zinc dimethyl dithiocarbamate and pre-dispersed master batch is applied in the field of zinc dimethyl dithiocarbamate pre-dispersed master batch and its preparation, and can solve the problems of easy flying, easy agglomeration, etc. Difficult to disperse and other problems, to achieve the effect of weakening static electricity, ensuring activity, and reducing surface tension

Inactive Publication Date: 2015-10-21
SHANDONG YANGGU HUATAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that powder zinc dimethyl dithiocarbamate is easy to fly, easy to agglomerate and difficult to disperse during mixing, the present invention provides a zinc dimethyl dithiocarbamate pre-dispersed masterbatch and Its preparation method uses zinc dimethyl dithiocarbamate pre-dispersed masterbatch particles instead of powdered zinc dimethyl dithiocarbamate as an accelerator in rubber, which can improve the dispersion of the accelerator in the rubber compound stability, but also improve storage stability, improve operational safety and product quality

Method used

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  • Zinc dimethyldithiocarbamate pre-dispersed mother colloidal particle and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A zinc dimethyl dithiocarbamate pre-dispersed masterbatch, comprising the following raw materials in parts by weight: 70 parts of zinc dimethyl dithiocarbamate powder, 10 parts of binary ethylene propylene rubber, EPDM 10 parts of rubber, 5 parts of dioctyl adipate, 5 parts of paraffin oil.

[0036] The preparation method is as follows:

[0037] (1) Put the EPDM rubber and EPDM rubber into the internal mixer and mix for 30 seconds, then put in zinc dimethyl dithiocarbamate powder, dioctyl adipate, and paraffin oil for mixing After 100 seconds, lift the upper bolt of the internal mixer to turn over the material once, and then continue to mix with the weight. The total time reaches 300 seconds, the temperature rises to above 80°C, and the glue is removed; Zinc dithiocarbamate pre-dispersed masterbatch;

[0038] (2) Put the mixed zinc dimethyl dithiocarbamate pre-dispersed masterbatch into the extruder with 80 mesh stainless steel filter screen to extrude and granulate. ...

Embodiment 2

[0040] A zinc dimethyl dithiocarbamate pre-dispersed masterbatch, comprising the following raw materials in parts by weight: 74 parts of zinc dimethyl dithiocarbamate powder, 8 parts of binary ethylene propylene rubber, EPDM 8 parts of rubber, 5 parts of dioctyl adipate, 5 parts of paraffin oil.

[0041] The preparation method is the same as in Example 1.

Embodiment 3

[0043] A zinc dimethyl dithiocarbamate pre-dispersed masterbatch, comprising the following raw materials in parts by weight: 76 parts of zinc dimethyl dithiocarbamate powder, 8 parts of binary ethylene propylene rubber, EPDM 8 parts of rubber, 4 parts of dioctyl adipate, 4 parts of paraffin oil.

[0044] The preparation method is the same as in Example 1.

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Abstract

The invention relates to a zinc dimethyldithiocarbamate pre-dispersed mother colloidal particle and a preparation method thereof. The pre-dispersed mother colloidal particle comprises, by weight, 70-85 parts of zinc dimethyldithiocarbamate powder, 5-20 parts of ethylene propylene rubber, 1-10 parts of a wetting agent and 1-10 parts of a softener. The invention also provides the preparation method of the pre-dispersed mother colloidal particle. The unique wetting agent is used in the invention to weaken static electricity of the zinc dimethyldithiocarbamate powder and reduce surface tension between the zinc dimethyldithiocarbamate powder and the rubber, so zinc dimethyldithiocarbamate and the ethylene propylene rubber compose a uniform compound, and the compound has good compatibility and excellent dispersibility in the rubber processing process, and can greatly shorten the mixing time in the use process.

Description

technical field [0001] The invention relates to a zinc dimethyl dithiocarbamate pre-dispersed masterbatch and a preparation method thereof, in particular to a zinc dimethyldithiocarbamate pre-dispersed masterbatch with rubber as a carrier and its preparation method. This predispersed masterbatch can replace traditional zinc dimethyldithiocarbamate (ZDMC) powder. Background technique [0002] Zinc dimethyl dithiocarbamate, referred to as ZDMC or PZ, can be used as an accelerator for synthetic rubber and latex, especially suitable for the synthesis of butyl rubber that requires compression deformation and nitrile rubber with excellent aging resistance. It is also suitable for the synthesis of EPDM rubber. Due to its tasteless, non-polluting and non-discoloration properties, zinc dimethyl dithiocarbamate is especially suitable for the preparation of adhesive tape, food and medical rubber products, especially in EPDM rubber, butyl rubber and other products. , in the United St...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K5/39C08K5/11
CPCC08L23/16C08L2205/025C08L2205/03C08L91/06C08K5/39C08K5/11
Inventor 杨振林陈宝喜李云峰王才朋
Owner SHANDONG YANGGU HUATAI CHEM
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