Natural latex composite slurry and preparation method thereof, protective gloves and preparation method thereof

A technology of natural latex and composite slurry, applied in gloves, other household utensils, clothing, etc., can solve comprehensive performance damage such as tear resistance, abrasion resistance, cut resistance and puncture resistance, relatively large impact of aging performance, rubber hydrocarbon The binding ability is weakened and other problems, and the effect of high industrial application value, soft texture and low production cost is achieved.

Active Publication Date: 2020-03-31
SHANDONG XINGYU GLOVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current latex protective gloves mainly use chemical wrinkling or physical salt spraying to achieve anti-slip function. Most of these protective gloves use methanol and calcium salt as coagulants, organic solvents as wrinkling agents, and thenardite or sodium chloride. Salt is used as salt spray particles, and through these processing techniques, gloves will penetrate the rubber during the dipping process, and the protective gloves produced not only pollute the environment, but also affect the tear resistance, wear resistance, cut resistance and resistance of the latex film. The comprehensive performance such as puncture will cause damage, and some chemical reagents will remain on the gloves, causing serious injury to the user
In addition to this method, the invention patents with patent numbers 201310536861.7 and 201510366002.7 respectively use zinc ammonium complexes as heat-sensitive agents, and zinc oxide in the zinc ammonium complexes is an active agent in natural latex vulcanization, which acts as an activation accelerator. The effect of rubber vulcanization speeds up, which also causes the vulcanization speed of the product to speed up in the later stage, resulting in faster aging of the product, thus affecting the aging performance; Sulfur, accelerators, zinc oxide, etc. in the vulcanization system migrate to the surface of the rubber, causing blooming. Therefore, this method has a greater impact on the later aging performance of the product, and will also cause blooming

Method used

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  • Natural latex composite slurry and preparation method thereof, protective gloves and preparation method thereof

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preparation example Construction

[0029] The specific embodiment part of the present invention provides a kind of preparation method of natural latex composite slurry, and this method comprises the following steps:

[0030] (1) Adopt cold water dilution to prepare the thermosensitizer of required mass concentration (hereinafter referred to as the thermosensitizer diluted by cold water), and adopt vulcanization system to carry out pre-vulcanization treatment to natural latex to obtain pre-vulcanized natural latex.

[0031] In the present invention, the heat-sensitive agent (hereinafter referred to as heat-sensitive agent) before cold water dilution is selected from one or more combinations of polyvinyl methyl ether, polyether polyoxymethylene acetal, and polypropylene glycol. The sensitizer acts as a stabilizer when the temperature of the latex is low, and when the temperature is high, it will solidify rapidly when it reaches the cloud point of the thermal sensitizer, causing the latex to solidify, so that the l...

Embodiment 1

[0050] A preparation method for natural latex composite slurry, comprising the following steps:

[0051] (1) Dilute with cold water to prepare polyvinyl methyl ether with a mass concentration of 20%, and use a sulfur vulcanization system to pre-vulcanize the natural latex to obtain pre-vulcanized natural latex.

[0052] Among them, the pre-vulcanized natural rubber latex is a concentrated natural rubber latex with a dry rubber content of 60% and an ammonia content of 0.7% as a raw material. It is composed of sulfur, zinc diethyldithiocarbamate and zinc oxide. The sulfur vulcanization system of 0.8%, 0.4% and 0.4% of the dry milk content of natural rubber latex is made by vulcanizing at 60°C for 2 hours.

[0053] (2) The pre-vulcanized natural rubber latex in the step (1) is subjected to constant temperature treatment, and after the temperature is constant at 20° C., in the stirring process, slowly add polyvinyl methyl ether diluted with cold water in the step (1), The added w...

Embodiment 2

[0055] A preparation method for natural latex composite slurry, comprising the following steps:

[0056] (1) Dilute with cold water to prepare polyvinyl methyl ether with a mass concentration of 20%, and use a sulfur vulcanization system to pre-vulcanize the natural latex to obtain pre-vulcanized natural latex.

[0057] Among them, the pre-vulcanized natural rubber latex is a concentrated natural rubber latex with a dry rubber content of 60% and an ammonia content of 0.7% as a raw material. It is composed of sulfur, zinc diethyldithiocarbamate and zinc oxide. The sulfur vulcanization system of 0.8%, 0.4% and 0.4% of the dry milk content of natural rubber latex is made by vulcanizing at 60°C for 2 hours.

[0058] (2) The pre-vulcanized natural rubber latex in the step (1) is subjected to constant temperature treatment, and after the temperature is constant at 20° C., in the stirring process, slowly add polyvinyl methyl ether diluted with cold water in the step (1), The added w...

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Abstract

The invention relates to a natural latex composite slurry, which is made of prevulcanized natural latex and a heat-sensitive agent diluted with cold water, and the heat-sensitive agent is selected from polyvinyl methyl ether, polyether polyoxymethylene acetal One or more combinations of diol and polypropylene glycol. The invention also relates to a natural latex heat-sensitive embossed protective glove prepared by using the natural latex composite slurry. The natural latex composite slurry of the present invention can not only prevent glue penetration when the gloves are dipped, avoid harm to the human body, save energy and protect the environment, but also prevent liquid from entering the gloves, so that the prepared gloves are soft, light and sensitive, and have good air permeability It is not easy to fatigue after wearing for a long time. It is especially suitable for mechanical operations. It can also make the gloves have good comprehensive properties such as wear resistance, cut resistance, tear resistance, puncture resistance, and aging resistance. affect the aging performance of the product and cause blooming.

Description

technical field [0001] The invention belongs to the technical field of labor protection products, relates to a natural latex composite slurry and a preparation method thereof, and also relates to a natural latex heat-sensitive embossed protective glove prepared from the natural latex composite slurry and a preparation method thereof. Background technique [0002] The current latex protective gloves mainly use chemical wrinkling or physical salt spraying to achieve anti-slip function. Most of these protective gloves use methanol and calcium salt as coagulants, organic solvents as wrinkling agents, and thenardite or sodium chloride. Salt is used as salt spray particles, and through these processing techniques, gloves will penetrate the rubber during the dipping process, and the protective gloves produced not only pollute the environment, but also affect the tear resistance, wear resistance, cut resistance and resistance of the latex film. The comprehensive properties such as p...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L7/02C08L29/10C08L33/20C08L67/02C08L77/00C08L71/02C08L1/02C08L59/00C08K3/22B29D99/00A41D19/00
CPCA41D19/0068C08L7/02B29D99/0067C08K2003/2296C08L2205/03A41D19/01505C08L29/10C08K3/22C08K3/06C08K5/39C08L71/02C08L59/00
Inventor周星余王垂文
OwnerSHANDONG XINGYU GLOVES