Unlock instant, AI-driven research and patent intelligence for your innovation.

Formula of raw materials for producing sulfur microcapsule capable of being used as rubber vulcanizing agent

A technology of vulcanizing agent and microcapsules, which is applied in the field of raw material formulation of sulfur microcapsules, can solve problems such as inability to produce rubber products, inflammability and explosion, and expensive insoluble sulfur, so as to prevent "blooming", simple and feasible process, and avoid early stage Effects of vulcanization problems

Inactive Publication Date: 2010-04-28
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, insoluble sulfur is leached by carbon disulfide in production, which makes the operation very dangerous, flammable and explosive. In addition, insoluble sulfur is very expensive, so it cannot be widely used in the production of various rubber products.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare the quality of each component of single-shell sulfur microcapsules as follows:

[0018] Sublimed sulfur 14.9g

[0019] Urea 15.1g

[0020] 37% formaldehyde solution 30.1g

[0021] Sodium dodecyl sulfonate 0.15g

[0022] Gelatin 1.5g

[0023] Water 43.6g

[0024] Triethanolamine 0.5g

[0025] Formic acid 0.71g

[0026] The preparation method of single-shell sulfur microcapsules is as follows:

[0027] (1) Add 15.1 g of urea and 30.1 g of 37% formaldehyde solution to a four-necked flask, dropwise add triethanolamine, adjust the pH value to 8-9, and stir and react at 70° C. for 1 hour to prepare a urea-formaldehyde resin prepolymer;

[0028] (2) Prepare an aqueous solution containing 1.5 g of gelatin, add 0.15 g of sodium dodecylsulfonate surfactant, heat and stir to prepare an aqueous phase solution;

[0029] (3) Add the sublimed sulfur into the aqueous phase solution, and shear and disperse it with a shear emulsifier at a speed of 10,000 rpm for 5 minutes...

Embodiment 2

[0034] Prepare the quality of each component of single-shell sulfur microcapsules as follows:

[0035] Sublimed sulfur 14.9g

[0036] Urea 10.1g

[0037] 37% formaldehyde solution 20.2g

[0038] Sodium dodecyl sulfonate 0.1g

[0039] Gelatin 1.5g

[0040] Water 43.6g

[0041] Triethanolamine 0.5g

[0042] Formic acid 0.71g

[0043] The preparation method of single-shell sulfur microcapsules is as follows:

[0044] (1) Add 10.1 g of urea and 20.2 g of 37% formaldehyde solution to a four-neck flask, dropwise add 0.5 g of triethanolamine, adjust the pH value to 8-9, and stir and react at 70° C. for 1 hour to prepare a urea-formaldehyde resin prepolymer;

[0045] (2) Prepare an aqueous solution containing 1.5 g of gelatin, add 0.1 g of sodium dodecylsulfonate surfactant, heat and stir to prepare an aqueous phase solution;

[0046] (3) Add the sublimed sulfur into the aqueous phase solution, and shear and disperse it with a shear emulsifier at a speed of 10,000 rpm for 5 mi...

Embodiment 3

[0051] Prepare the quality of each component of single-shell sulfur microcapsules as follows:

[0052] Sublimated Sulfur 15g

[0053] Urea 5.0g

[0054] 37% formaldehyde solution 9.9g

[0055] Sodium dodecyl sulfonate 0.15g

[0056] Gelatin 1.5g

[0057] water 45g

[0058] Triethanolamine 0.5g

[0059] Formic acid 0.71g

[0060] The preparation method of single-shell sulfur microcapsules is as follows:

[0061] (1) Add 5 g of urea and 9.9 g of 37% formaldehyde solution into a four-necked flask, dropwise add 0.5 g of triethanolamine, adjust the pH value to 8-9, and stir and react at 70° C. for 1 hour to prepare a urea-formaldehyde resin prepolymer;

[0062] (2) Prepare an aqueous solution containing 1.5 g of gelatin, add 0.15 g of sodium dodecylsulfonate surfactant, heat and stir to prepare an aqueous phase solution;

[0063] (3) Add the sublimed sulfur into the aqueous phase solution, and shear and disperse it with a shear emulsifier at a speed of 10,000 rpm for 5 minute...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a formula of raw materials for producing a sulfur microcapsule capable of being used as a rubber vulcanizing agent, which consists of sublimed sulfur, urea, 37% of formaldehyde solution, gelatin or polyvinyl alcohol, formic acid, triethanolamine and water. The formula can be used for preparing a sulfur microcapsule product by the in-situ polymerization method, and sulfur can be released by melting a coating layer at certain temperature, thereby playing the role of vulcanizing rubber.

Description

technical field [0001] The invention belongs to a raw material formula for producing sulfur microcapsules which can be used as rubber vulcanizing agent. Background technique [0002] Sulfur is the most commonly used vulcanizing agent for rubber. The solubility of sulfur in different rubbers is different. At the same time, temperature has a great influence on the solubility of sulfur. As a result, sulfur is easily ejected during the rubber mixing process, which affects the quality of rubber products. [0003] Insoluble sulfur is an important rubber vulcanizing agent to solve the "spray box" phenomenon on the surface of the rubber compound. It is chemically inert and physically inert. Early scorch phenomenon occurs, it can be widely used in the tire carcass compound and the bonding compound of the skeleton material, without polluting the mold, improving the appearance quality of light-colored products and the adhesion between layers of multi-layer rubber products fit. Howeve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08G12/12C08K3/06C08L21/00
Inventor 汪树军李杰刘红研熊文峰张莉莉徐艳武
Owner CHINA UNIV OF PETROLEUM (BEIJING)