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Pre-dispersing masterbatch for rubber accelerator ETU (N,N-ethylene thiourea) and preparation method of pre-dispersing masterbatch

A technology for pre-dispersing master batches and rubber accelerators, applied in the field of rubber accelerators and their preparation, can solve the problems of easy agglomeration, dust pollution, uneven dispersion, etc., achieves easy agglomeration, avoids misfeeding, and has a simple and convenient preparation method. Effect

Inactive Publication Date: 2016-12-07
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a rubber accelerator ETU pre-dispersed masterbatch and its preparation method in view of the deficiencies in the prior art. The rubber accelerator ETU pre-dispersed masterbatch is convenient for storage, transportation and weighing , can ensure the original activity of ETU, and solve the problems of easy agglomeration and uneven dispersion of ETU directly put into rubber for mixing, and at the same time, it can solve the problem of ETU dust pollution and avoid the health problems of operators caused by inhaling ETU dust ; and the masterbatch is colored, which is convenient for material identification and management, and avoids misfeeding by operators during the subsequent mixing and feeding of rubber products, and the use of color masterbatches does not affect the color of the subsequent prepared rubber products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The composition of the rubber accelerator ETU pre-dispersed masterbatch of Example 1 is: 80 parts of N, N-ethylene thiourea, 5 parts of EPDM rubber, 5 parts of ethylene-vinyl acetate rubber, and 3 parts of EVA resin , 2 parts of methyl epoxy acetyl ricinoleate, 2 parts of saturated fatty acid zinc, 2 parts of naphthenic oil, 1 part of color masterbatch, the preparation method of this masterbatch, comprises the following steps:

[0021] 1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0022] 2) Put EPDM rubber, ethylene-vinyl acetate rubber and EVA resin into the internal mixer, and mix for 8 minutes at a temperature of 80 °C and a speed of 55 r / min;

[0023] 3) Put epoxyacetyl ricinoleic acid methyl ester and saturated fatty acid zinc into the internal mixer, and continue mixing for 5 min at the temperature of 80 °C and the speed of 55 r / min;

[0024] 4) Put N,N-ethylenethiourea, naphthenic oil and color m...

Embodiment 2

[0026] The composition of the rubber accelerator ETU pre-dispersed masterbatch of embodiment two is: N,N-ethylene thiourea 75 parts, EPDM rubber 8 parts, ethylene-vinyl acetate rubber 5 parts, EVA resin 2 parts , 1 part of methyl epoxyacetyl ricinoleate, 3 parts of saturated fatty acid zinc, 4 parts of naphthenic oil, 2 parts of color masterbatch, the preparation method of this masterbatch, comprises the following steps:

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

[0028] 2) Put EPDM rubber, ethylene-vinyl acetate rubber and EVA resin into the internal mixer, and mix for 6 minutes at a temperature of 78 °C and a speed of 50 r / min;

[0029] 3) Put epoxyacetyl ricinoleic acid methyl ester and saturated fatty acid zinc into the internal mixer, and continue mixing for 5 minutes at a temperature of 78 °C and a speed of 50 r / min;

[0030] 4) Put N,N-ethylenethiourea, naphthenic oil and color masterbatch in...

Embodiment 3

[0032] The composition of the rubber accelerator ETU predispersed masterbatch of embodiment three is: 75 parts of N, N-ethylene thiourea, 7 parts of nitrile rubber, 3 parts of EVA resin, 3 parts of epoxyacetyl ricinoleic acid methyl ester , 4 parts of saturated fatty acid zinc, 5 parts of naphthenic oil, 3 parts of color masterbatch, the preparation method of this masterbatch, comprises the following steps:

[0033] 1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0034] 2) Put nitrile rubber and EVA resin into the internal mixer, and mix for 9 minutes at the temperature of 75 °C and the speed of 52 r / min;

[0035]3) Put epoxyacetyl ricinoleic acid methyl ester and saturated fatty acid zinc into the internal mixer, and continue mixing for 4 minutes at a temperature of 75 °C and a speed of 52 r / min;

[0036] 4) Put N,N-ethylene thiourea, naphthenic oil and color masterbatch into the internal mixer, and mix for 6 m...

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Abstract

The invention discloses pre-dispersing masterbatch for an rubber accelerator ETU (N,N-ethylene thiourea) and a preparation method of the pre-dispersing masterbatch. The pre-dispersing masterbatch comprises components in parts by weight as follows: 72-82 parts of ETU, 8-16 parts of rubber carriers, 2-4 parts of EVA (ethylene vinyl acetate copolymer) resin, 1-3 parts of epoxidized methyl acetorieinoleate, 2-4 parts of saturated fatty acid zinc, 1-8 parts of naphthenic oil and 1-3 parts of color masterbatch. The pre-dispersing masterbatch for the rubber accelerator ETU is convenient to store, transport and weigh, the preparation method of the pre-dispersing masterbatch is simple and high in operability, original activity of ETU can be guaranteed, the problems that ETU is prone to agglomeration and is non-uniform in dispersion when directly put into rubber for mixing are solved, the problem of ETU dust pollution can be solved, and the health problem of an operator caused by inhalation of ETU dust is solved; besides, the masterbatch is colored, so that material identification and management are facilitated, mistaken charging caused by the operator during feeding for follow-up rubber product mixing is avoided, and the application of the color masterbatch has no influence on colors of follow-up prepared rubber products.

Description

technical field [0001] The invention relates to the technical field of rubber accelerators and their preparation, in particular to a rubber accelerator ETU pre-dispersed masterbatch and a preparation method thereof. Background technique [0002] ETU, namely N, N-ethylene thiourea, is a white powder with a relative density of 1.42 to 1.43, soluble in ethanol, methanol, ethylene glycol and pyridine, slightly soluble in water, insoluble in acetone, toluene and gasoline, odorless Bitter, moderately toxic, often carcinogenic, with a melting point of 190-204 °C, flammable, and the mixture of dust and air is explosive. ETU can be used as an accelerator for various rubbers such as chloroprene rubber, CSM rubber, and CPE rubber to improve the aging resistance and mechanical properties of vulcanized rubber. ETU can quickly vulcanize chloroprene rubber without scorch safety, and can be used as an activator and secondary accelerator for low-sulfur or sulfur-free vulcanization of other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/16C08L9/02C08L91/00C08K5/405C08K5/098C08K5/1515C08J3/22B29C47/92B29C48/92
CPCC08L23/16B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2409/02C08J2423/08C08J2423/16C08L9/02C08L23/0853C08L2205/025C08L2205/03C08L2205/035C08L2310/00C08L91/00C08K5/405C08K5/098C08K5/1515
Inventor 连千荣
Owner NINGBO ACTMIX POLYMER
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