Pre-dispersed master colloid for rubber vulcanization promotion, and preparation method thereof

A pre-dispersed masterbatch and rubber technology, which is applied in the field of pre-dispersed masterbatch accelerated by rubber vulcanization and its preparation, to achieve the effects of smooth particle surface, uniform discharge, and increased vulcanization speed

Active Publication Date: 2015-12-23
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above patents all involve the improvement of the formulation of pre-dispersed masterbatches to improve the efficiency of rubber vulcanization, but none of them involve the combination of dual active ingredients to improve the vulcanization performance of rubber compounds, nor can they use ultra-fine fillers to improve rubber vulcanization. Mechanical properties and can improve the viscous fluidity in the mixing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw materials are composed according to mass fraction: 20 parts of tellurium diethyldithiocarbamate (TDEC), 30 parts of bispentamethylenethiuram tetrasulfide (DPTT), 3 parts of inorganic filler, 5 parts of softening oil, processing aids 2 parts and rubber carrier 40 parts. Among them, the softening oil is composed of 2.5 parts of paraffin-based rubber oil and 2.5 parts of naphthenic rubber oil; the processing aid is composed of 1 part of sodium dodecylbenzene sulfonate and 1 part of sorbitan monolaurate; the rubber carrier is composed of 12 parts It is composed of EPDM rubber and 28 parts of nitrile rubber; the inorganic filler is composed of 1.5 parts of kaolin with a fineness of 300 mesh and 1.5 parts of talcum powder with a fineness of 2500 mesh.

[0028] Preparation method: put rubber carrier, inorganic filler and softened oil accounting for one-third of the total weight of the softened oil into an internal mixer, mix at 50°C for 10 minutes at a speed of 60r / min, an...

Embodiment 2

[0030] Raw materials are composed in parts by mass: 25 parts of tellurium diethyldithiocarbamate (TDEC), 40 parts of bispentamethylene thiuram tetrasulfide (DPTT), 5 parts of inorganic filler, 8 parts of softening oil, processing aid 4 parts of agent and 18 parts of rubber carrier. Wherein, the softening oil is composed of 4 parts of paraffin-based rubber oil and 4 parts of naphthenic rubber oil in parts by weight; the processing aid is composed of 2 parts of sodium dodecylbenzene sulfonate and 2 parts of sorbitan monolaurate ; The rubber carrier is composed of 5.4 parts of EPDM rubber and 12.6 parts of nitrile rubber; the inorganic filler is composed of 2.5 parts of kaolin with a fineness of 300 mesh and 2.5 parts of talcum powder with a fineness of 2500 mesh.

[0031] Preparation method: same as Example 1.

Embodiment 3

[0033] Raw materials are composed according to mass fraction: 30 parts of tellurium diethyldithiocarbamate (TDEC), 35 parts of bispentamethylene thiuram tetrasulfide (DPTT), 5 parts of inorganic filler, 8 parts of softening oil, processing aids 4 parts and rubber carrier 18 parts. Wherein, the softening oil is composed of 4 parts of paraffin-based rubber oil and 4 parts of naphthenic rubber oil in parts by weight; the processing aid is composed of 2 parts of sodium dodecylbenzene sulfonate and 2 parts of sorbitan monolaurate ; The rubber carrier is composed of 5.4 parts of EPDM rubber and 12.6 parts of nitrile rubber; the inorganic filler is composed of 2.5 parts of kaolin with a fineness of 300 mesh and 2.5 parts of talcum powder with a fineness of 2500 mesh.

[0034] Preparation method: same as Example 1.

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PUM

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Abstract

The invention discloses a pre-dispersed master colloid for rubber vulcanization promotion, and a preparation method thereof. The pre-dispersed master colloid comprises, by mass, 20-30 parts of tellurium diethyl dithiocarbamate (TDEC), 30-50 parts of dipentamethylenethiuram tetrasulfide (DPTT), 3-10 parts of an inorganic filler, 5-10 parts of softened oil, 2-5 parts of a processing assistant and 5-40 parts of a rubber carrier. The preparation method of the pre-dispersed master colloid improves the dispersion of active components, and makes the master colloid be uniformly discharged and have smooth particles and good processability; and the master colloid effectively improves the mechanical performances of vulcanized rubber when the master colloid is used in preparation of rubber compounds.

Description

technical field [0001] The invention relates to a rubber auxiliary agent and a preparation method thereof, in particular to a pre-dispersed masterbatch used for accelerating rubber vulcanization and a preparation method thereof. Background technique [0002] Rubber additives mainly include rubber accelerators, vulcanization activators, antioxidants, processing aids and other special functional rubber additives. In recent years, with the development of rubber additives industry, in order to eliminate the chemical smog and dust pollution problems in the rubber processing process, one of the important directions for the development of additives is product compounding and master batching. Pre-dispersed powdered chemical additives in a certain bonding system by special means, and then granulated, the additive masterbatch made can be used to replace traditional powdered additives, improve the operating environment, improve product quality, and thus help After the agent is granula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L23/16C08L91/06C08L91/00C08K13/02C08K5/39C08K5/40C08K3/34B29B7/00
Inventor 连千荣
Owner NINGBO ACTMIX POLYMER
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