Predispersed master batch of multifunctional rubber ingredient PDM and preparation method thereof

A technology of pre-dispersing masterbatches and rubber additives, which is applied in the field of rubber additives and its preparation, which can solve problems such as skin allergies of operators, affect the health of workers, and uneven dispersion, so as to shorten the mixing time and facilitate The effect of mixing ingredients and improving the uniformity of dispersion

Inactive Publication Date: 2015-12-02
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if PDM is directly added in the rubber mixing process, there will be problems of uneven dispersion and flying dust. The flying dust will cause skin allergies of operators, affect the health of workers, and cause environmental pollution problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The composition of the pre-dispersed masterbatch of the multifunctional rubber additive PDM of Example 1 is: 75 parts of N, N'-m-phenylene bismaleimide, 12 parts of EPDM rubber, 3 parts of EVA resin, 3 parts of stearic acid, 3 parts of dioctyl adipate, 4 parts of industrial white oil, the preparation method of this master batch, comprises the following steps:

[0022] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0023] (2) Put the EPDM rubber into the internal mixer according to the proportion, and mix for 5 minutes under the conditions of temperature 78 ℃ and rotation speed 60r / min;

[0024] (3) Put N,N'-m-phenylene bismaleimide, EVA resin, stearic acid, dioctyl adipate and industrial white oil into the internal mixer in step (2), at temperature Continue kneading for 4 minutes under the conditions of 78°C and 60r / min to obtain the rubber compound;

[0025] (4) Feed the rubber material obtained after...

Embodiment 2

[0026] The composition of the pre-dispersed masterbatch of the multifunctional rubber additive PDM of Example 2 is: 76 parts of N, N'-m-phenylene bismaleimide, 13 parts of natural rubber, 3 parts of EVA resin, stearic acid 2 parts, 2 parts of dioctyl phthalate, 4 parts of industrial white oil, the preparation method of this master batch, comprises the following steps:

[0027] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0028] (2) Put the natural rubber into the internal mixer according to the proportion, and mix for 5 minutes at the temperature of 75°C and the speed of 55r / min;

[0029] (3) Put N,N'-m-phenylene bismaleimide, EVA resin, stearic acid, dioctyl phthalate and industrial white oil into the internal mixer in step (2), and Continue mixing for 6 minutes at a temperature of 75°C and a rotational speed of 55 r / min to obtain a rubber compound;

[0030] (4) Feed the compound obtained after mixing in s...

Embodiment 3

[0031] The composition of the pre-dispersed masterbatch of the multifunctional rubber additive PDM of Example 3 is: 74 parts of N,N'-m-phenylene bismaleimide, 15 parts of nitrile rubber, 4 parts of EVA resin, stearin 2 parts of acid, 2 parts of dioctyl phthalate, 3 parts of industrial white oil, the preparation method of this master batch, comprises the following steps:

[0032] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0033] (2) Put the nitrile rubber into the internal mixer according to the proportion, and mix for 4 minutes at the temperature of 70°C and the speed of 65r / min;

[0034] (3) Put N,N'-m-phenylene bismaleimide, EVA resin, stearic acid, dioctyl phthalate and industrial white oil into the internal mixer in step (2), and Continue to knead for 5 minutes under the condition of temperature of 70°C and rotation speed of 65r / min to obtain rubber compound;

[0035] (4) Feed the compound obtained af...

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Abstract

The invention discloses a predispersed master batch of a multifunctional rubber ingredient PDM, which is composed of the following components in parts by weight: 74-76 parts of N,N'-m-phenylenedimaleimide, 10-16 parts of rubber carrier, 3-5 parts of EVA (ethylene-vinyl acetate) resin, 1-6 parts of stearic acid, 1-5 parts of plasticizer and 1-10 parts of industrial white oil. By using the rubber base as the carrier, the preparation method of the predispersed master batch is simple and easy to operate. The prepared master batch can effectively maintain the original activity of PDM, does not aggregate at room temperature, is easy for proportioning and compounding, and thus, is convenient and accurate for proportioning. After being used in the rubber product, the master batch can not cause flying dust or cause the skin allergy of operating personnel and the environmental pollution phenomenon in the rubber production process. Besides, the master batch can greatly improve the dispersion speed and dispersion quality of the PDM in the rubber, lower the compounding temperature, shorten the compounding time, enhance the dispersion uniformity and ensure the production efficiency and production quality of the rubber product.

Description

technical field [0001] The invention relates to the technical field of rubber additives and their preparation, in particular to a pre-dispersed masterbatch of multifunctional rubber additives PDM and a preparation method thereof. Background technique [0002] PDM (i.e., N,N'-m-phenylene bismaleimide), also known as HVA-2, is a multifunctional rubber additive, and its appearance is yellow or brown powder. In the process of rubber processing, it can be used not only as a vulcanizing agent, but also as a co-vulcanizing agent for peroxide vulcanization systems, and can also be used as an anti-scorch agent and tackifier. PDM is not only suitable for natural rubber, but also for synthetic rubber and rubber-plastic combination system. The main applications of PDM include: [0003] Application of PDM in CSM: PDM can be used as a vulcanizing agent or vulcanization aid for CSM (chlorosulfonated polyethylene rubber). In the MgO / PER / TRA vulcanization system, PDM is an effective anti-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L7/00C08L23/34C08L23/16C08L23/08C08L91/00C08K5/09C08K5/3415C08J3/22
Inventor 连千荣
Owner NINGBO ACTMIX POLYMER
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