CN113388070B - Chlorosulfonated polyethylene emulsion for gloves and preparation method thereof - Google Patents

Abstract

The invention discloses chlorosulfonated polyethylene emulsion for gloves and a preparation method thereof, wherein the chlorosulfonated polyethylene emulsion comprises the following components: 100 parts of chlorosulfonated polyethylene resin, 200-400 parts of solvent, 10-30 parts of modifier, 0.1-0.5 part of catalyst, 1-5 parts of emulsifier, 1 part of dispersant and 300 parts of deionized water. According to the invention, under the action of the catalyst, the hydrophilic modifier is grafted to the chlorosulfonated polyethylene resin, so that the problems of large particle size and wide dispersion caused by low polarity in the traditional chlorosulfonated polyethylene emulsion preparation process are solved, the particle size of the prepared emulsion is below 500nm, the prepared emulsion can be uniformly spread on the surface of a glove mold, the compactness and surface uniformity of the finished glove are improved, and the barrier property of the finished glove is improved.

Description

Chlorosulfonated polyethylene emulsion for gloves and preparation method thereof

Technical Field

The invention relates to the technical field of glove raw material preparation, in particular to chlorosulfonated polyethylene emulsion for gloves and a preparation method thereof.

Background

Chlorosulfonated polyethylene resin (CSM) is a special synthetic rubber prepared by chlorinating and chlorosulfonating high-density polyethylene, and is classified into various types according to the difference in molecular weight, chlorine mass fraction, and sulfur mass fraction. CSM has excellent heat resistance, ozone resistance, oxidation resistance, weathering resistance, corrosion resistance and the like, and is widely applied to the fields of coatings, wire outer covers, gaskets, gloves and the like at present. However, CSM has very low solubility in organic solvents, typically only 15-20%, resulting in volatilization of large amounts of organic solvents during use, increasing product cost, and bringing about risks of environmental pollution and fire. The CSM is prepared into emulsion in a water-based manner, is applied to the fields of coatings, gloves and the like, and has important significance for reducing the emission of solvents and realizing green production.

At present, the research on chlorosulfonated polyethylene emulsion in China is very little, zhang Chang of the research institute of ocean and sea materials of Qingdao, 1994 and the like published articles, and the research on the method of directly adding chlorosulfonated polyethylene solution into water for emulsification and extraction is carried out to obtain the emulsion.

Disclosure of Invention

The invention discloses chlorosulfonated polyethylene emulsion for gloves and a preparation method thereof.

In order to solve the technical problems, the invention provides the following technical scheme:

a chlorosulfonated polyethylene emulsion for gloves is composed of the following components: 100 parts of chlorosulfonated polyethylene resin, 200-400 parts of solvent, 10-30 parts of modifier, 0.1-0.5 part of catalyst, 1-5 parts of emulsifier, 1 part of dispersant and 300 parts of deionized water.

The glove is prepared by chlorosulfonating polyethylene emulsion, and the solvent is one or a combination of more than two of 120 solvent oil, cyclohexanone, xylene and cyclohexane.

The glove is prepared from chlorosulfonated polyethylene emulsion, and the modifier is one or a combination of more than two of acrylic acid, maleic anhydride, hydroxyethyl acrylate and hydroxypropyl acrylate.

The gloves are prepared by chlorosulfonating polyethylene emulsion, and the catalyst is benzoyl peroxide or azobisisobutyronitrile.

The gloves are prepared from chlorosulfonated polyethylene emulsion, and the emulsifier is one or a combination of more than two of sodium dodecyl sulfate, alkyl polyoxyethylene ether and ammonium nonylphenol polyoxyethylene ether sulfate.

The gloves are prepared by chlorosulfonating polyethylene emulsion, and the dispersing agent is one or the combination of polyvinyl alcohol and sodium polyacrylate.

The preparation method of the chlorosulfonated polyethylene emulsion for the gloves comprises the following steps:

i) Adding chlorosulfonated polyethylene resin and a solvent into a reaction kettle, heating, stirring and dissolving;

II) adding a catalyst and a modifier, and reacting for 2 hours at the temperature of 80 ℃;

III) adding an emulsifier and a dispersant, slowly dropwise adding deionized water for 1-3h, carrying out vacuum dehydration and cooling the solvent, and discharging.

The invention has the beneficial technical effects that:

1. under the action of a catalyst, hydrophilic modification groups are grafted to chlorosulfonated polyethylene resin, so that the polarity of the surface of the chlorosulfonated polyethylene resin is improved, the chlorosulfonated polyethylene resin is favorable for being compounded with different anionic and nonionic emulsifiers in water dispersion emulsification, the particle size of the prepared emulsion is less than 500nm, a small amount of dispersing agent is used for assisting, the dispersion suspension of emulsion particles in water is improved, the stability of the emulsion is improved, and the later-stage application and popularization of products are favorable.

2. The emulsion prepared by the preparation method of the invention has the particle size of below 500nm, can be uniformly spread on the surface of a glove mold, increases the compactness and surface uniformity of finished gloves, and improves the barrier property of the finished gloves

Detailed Description

Example 1

In this example, the chlorosulfonated polyethylene emulsion for gloves was composed of 100 parts by weight of chlorosulfonated polyethylene resin, 200 parts by weight of solvent 120 solvent oil, 10 parts by weight of modifier acrylic acid, 0.1 part by weight of catalyst benzoyl peroxide, 1 part by weight of emulsifier sodium dodecyl sulfate, 1 part by weight of dispersant polyvinyl alcohol, and 300 parts by weight of deionized water. The preparation method comprises the following steps

1) Adding chlorosulfonated polyethylene resin and a solvent into a reaction bottle, and heating, stirring and dissolving;

2) After adding a catalyst and a modifier, carrying out heat preservation reaction at 80 ℃ for 2 hours;

3) Adding an emulsifier and a dispersant, slowly dropwise adding deionized water for 1h, carrying out vacuum dehydration and cooling and discharging after a solvent.

Example 2

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the solvent is cyclohexanone.

Example 3

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the solvent is xylene.

Example 4

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the solvent is cyclohexane.

Example 5

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the amount of the solvent added was 300 parts by weight.

Example 6

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the amount of the solvent added was 400 parts by weight.

Example 7

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the modifier is maleic anhydride.

Example 8

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the modifier is hydroxyethyl acrylate.

Example 9

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the modifier is hydroxypropyl acrylate.

Example 10

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the amount of the modifier added was 20 parts by weight.

Example 11

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the amount of the modifier added was 30 parts by weight.

Example 12

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the catalyst is azobisisobutyronitrile.

Example 13

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the amount of the catalyst added was 0.3 part by weight.

Example 14

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the amount of the catalyst added was 0.5 part by weight.

Example 15

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the emulsifier is alkyl polyoxyethylene ether.

Example 16

In this example, the difference between chlorosulfonated polyethylene emulsion for gloves and example 1 is: the emulsifier is nonylphenol polyoxyethylene ether ammonium sulfate.

Example 17

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the amount of the emulsifier added was 3 parts by weight.

Example 18

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the amount of the emulsifier added was 5 parts by weight.

Example 19

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the dispersant is sodium polyacrylate.

Example 20

In this example, the chlorosulfonated polyethylene emulsion for gloves differs from example 1 in that: the dropping time of the deionized water is 2h.

Example 21

In this example, gloves were differentiated from example 1 by chlorosulfonated polyethylene emulsion: the dropping time of the deionized water is 3h.

The test method comprises the following steps:

and (3) a stabilization period: taking 50g of the emulsion in a closed plastic sample bottle, placing the bottle in a 50-degree oven for storage for a certain time, and observing whether precipitation or delamination occurs.

Particle size and particle size distribution: detection was carried out using a malvern particle size analyzer.

TABLE 1 performance index testing of emulsions

	Stability/day	Particle size/nm	Particle size distribution PDI index
				Example 1	15	514	0.35
Example 2	15	470	0.32
				Example 3	9	542	0.45
Example 4	20	422	0.23
				Example 5	16	434	0.27
Example 6	30	385	0.2
				Example 7	30	436	0.18
Example 8	40	357	0.17
				Example 9	8	410	0.21
Example 10	25	382	0.23
				Example 11	40	327	0.15
Example 12	20	438	0.25
				Example 13	20	425	0.32
Example 14	25	414	0.28
				Example 15	30	410	0.16
Example 16	40	392	0.14
				Example 17	35	427	0.17
Example 18	60	303	0.08
				Example 19	20	430	0.2
Example 20	20	448	0.18
				Example 21	25	425	0.23

Claims (6)

1. The chlorosulfonated polyethylene emulsion for gloves is characterized by consisting of the following components: 100 parts of chlorosulfonated polyethylene resin, 200-400 parts of solvent, 10-30 parts of modifier, 0.1-0.5 part of catalyst, 1-5 parts of emulsifier, 1 part of dispersant and 300 parts of deionized water;

the glove is prepared by using chlorosulfonated polyethylene emulsion through the following steps:

i) Adding chlorosulfonated polyethylene resin and a solvent into a reaction kettle, heating, stirring and dissolving;

II) adding a catalyst and a modifier, and reacting for 2 hours at a temperature of 80 ℃;

III) adding an emulsifier and a dispersant, slowly dropwise adding deionized water for 1-3h, carrying out vacuum dehydration and cooling and discharging after a solvent;

the modifier is one or the combination of more than two of acrylic acid, maleic anhydride, hydroxyethyl acrylate and hydroxypropyl acrylate;

the glove has chlorosulfonated polyethylene emulsion with particle size below 500 nm.

2. The chlorosulfonated polyethylene emulsion for gloves of claim 1, wherein the solvent is one or a combination of two or more of 120 mineral spirits, cyclohexanone, and cyclohexane.

3. The chlorosulfonated polyethylene emulsion for gloves of claim 1, wherein the catalyst is benzoyl peroxide or azobisisobutyronitrile.

4. The chlorosulfonated polyethylene emulsion for gloves according to claim 1, wherein the emulsifier is one or a combination of two or more of sodium dodecyl sulfate, alkyl polyoxyethylene ether, and ammonium nonylphenol polyoxyethylene ether sulfate.

5. The chlorosulfonated polyethylene emulsion for gloves of claim 1, wherein the dispersant is one or a combination of polyvinyl alcohol and sodium polyacrylate.

6. A method of preparing chlorosulfonated polyethylene emulsion for gloves as described in any of claims 1 to 5, comprising the steps of:

i) Adding chlorosulfonated polyethylene resin and a solvent into a reaction kettle, heating, stirring and dissolving;

II) adding a catalyst and a modifier, and reacting for 2 hours at the temperature of 80 ℃;

III) adding an emulsifier and a dispersant, slowly dropwise adding deionized water for 1-3h, carrying out vacuum dehydration and cooling the solvent, and discharging.