Core-shell type emulsion particle emulsion for enhancing rubber and preparation method thereof

A technology of rubber reinforcement and latex particles, which is applied in the field of core-shell latex particle emulsion and its preparation, can solve the problems of increasing the density of rubber materials and losing light weight of polymer materials, reducing the density, eliminating friction and hysteresis in the interface area, light color effect

Inactive Publication Date: 2007-09-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the density of the rubber material filled with reinforcing agent significantly inc

Method used

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  • Core-shell type emulsion particle emulsion for enhancing rubber and preparation method thereof
  • Core-shell type emulsion particle emulsion for enhancing rubber and preparation method thereof
  • Core-shell type emulsion particle emulsion for enhancing rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Preparation of nuclear emulsion

[0026] According to the formula in Table 1, add emulsifier sodium dodecylsulfonate (SDS) / alkylphenol polyoxyethylene ether series (OP-10) and deionized water into the reaction kettle, stir to make the emulsifier mix evenly, add Styrene monomer (St) and divinylbenzene (DVB), stir to emulsify the monomer, heat up to 70°C and stabilize for 10 minutes, dissolve the initiator potassium persulfate (KPS) in deionized water and add. Maintain the temperature while adding the pH regulator sodium bicarbonate (NaHCO 3 ), adjust the pH=7; react for 8 hours, at this time, the residual odor of the monomer basically disappears, and the polymerization is stopped.

[0027] raw material

mass (g)

Monomer: St

Polyene crosslinking monomer: DVB

Initiator: KPS

Emulsifier: OP-10

SDS

h 2 o

52.5

10.5

0.53

1.75

3.5

210

[0028] The second step: preparation of core-shell latex part...

Embodiment 2

[0039] Step 1: Preparation of nuclear emulsion

[0040] The preparation method is the same as in Example 1, and the raw materials are fed according to the ratio of raw materials in Table 4.

[0041] raw material

[0042] The second step: preparation of core-shell latex particle emulsion

[0043] The preparation method is the same as in Example 1, and the raw materials are fed according to the ratio of raw materials in Table 5.

[0044] raw material

[0045] The core-shell latex particles with a particle size of 60-90nm and a solid content of 21% were prepared through the above two steps. The ratio of the core layer to the shell layer monomer is 5:2.

[0046] Addition of core-shell latex filler to styrene butadiene rubber

[0047] Adding method is the same as embodiment 1.

[0048] Table 6 Comparison of mechanical properties of styrene-butadiene rubber obtained by different fillers and filling methods

[0049]

[0050]

[0051] It can be se...

Embodiment 3

[0053] Step 1: Preparation of nuclear emulsion

[0054] According to the formula of table 7, add emulsifier MS-1 and deionized water (H 2 O), stirring to make the emulsifier mix evenly, adding monomers α-methylstyrene (α-MS) and acrylonitrile (AN) and cross-linking agent DVB in a certain proportion, stirring to emulsify the monomers, and stabilize after heating to 85°C After 10 minutes, the initiator ammonium persulfate (APS) was dissolved in deionized water and then added. Maintain the temperature while adding the pH regulator sodium bicarbonate (NaHCO 3 ), adjust the pH=7; react for 6 hours, at this time, the residual odor of the monomer basically disappears, and the polymerization is stopped.

[0055] name

mass (g)

Monomer: α-MS

AN

Polyene crosslinking monomer: DVB

Initiator: APS

Emulsifier: MS-1

h 2 o

30

20

10

0.6

4.5

110

[0056] The second step: preparation of core-shell latex particle emulsion...

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PUM

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Abstract

A kind of core-shell rubber latex particles emulsion for increasing rubber and its preparation is through emulsion polymerization obtaining monodisperse latex particles, then using seed emulsion polymerization to get the core-shell rubber particles emulsion. The core-shell latex particles has spherical inspection and nano-scale, ensures reinforcement capability, and at the same time, makes rubber reduced density, good mobility, small high-stress concentration, and uniform stress distribution, and because of good interface, it can improve the mechanical properties effectively.

Description

Technical field: [0001] The invention relates to a core-shell latex particle emulsion for rubber reinforcement and a preparation method thereof. Background technique: [0002] The widely used filling reinforcing agents for rubber materials are carbon black, white carbon black, calcium carbonate, clay, talcum powder, clay, silica, clay and so on. Among them, carbon black is a reinforcing agent dependent on petroleum resources, and other types of fillers are basically derived from nature. Carbon black and silica are the most important reinforcing agents for rubber due to their fine particle size (primary particle size of some grades is less than 20 nanometers). Other types of reinforcing agents are often regarded as fillers because of their coarse particles, to improve the processing performance of rubber materials, reduce costs and assist reinforcement to a certain extent (commonly known as reinforcing agents). Although the above reinforcing agents play an important role in...

Claims

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Application Information

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IPC IPC(8): C08F2/44C08F2/22C08F4/30C08F12/08C08F20/14C08F20/44
Inventor 张立群刘亚康吴友平周建军赵蔚
Owner BEIJING UNIV OF CHEM TECH
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