Natural emulsion composite slurry and preparation method thereof, protection gloves and preparation method thereof

A technology of natural latex and composite slurry, which is applied in gloves, other household utensils, clothing, etc., can solve the comprehensive performance damage of tear resistance, wear resistance, cut resistance and puncture resistance, weakening of rubber hydrocarbon binding ability, aging performance Relatively large impact and other issues, to achieve the effect of high industrial application value, soft texture, and low production cost

Active Publication Date: 2018-07-20
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 emulsion composite slurry and preparation method thereof, protection 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 natural emulsion composite slurry. The natural emulsion composite slurry is prepared from natural emulsion and a heat sensitizing agent, wherein the natural emulsion is subjected to pre-sulfurization, and the heat sensitizing agent is diluted by cold water and is a composition comprising one or more of polyvinylmethyl ether, polyether polyformaldehyde dimethyl acetal and polypropylene glycol. The invention further relates to natural emulsion thermosensitive embossed protection gloves prepared from the natural emulsion composite slurry. The natural emulsion composite slurry can not only prevent the gloves from glue penetration during impregnation, avoid damage 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 in texture, light, sensitive and good in breathability, people does not easily feel tired when wearing the gloves for a long time, and therefore the prepared gloves are particularly suitable for mechanical operation; besides, the prepared gloves can have good composite performance of abrasion resistance, cutting resistance, tearing resistance, stabbing resistance, aging resistance and the like, so that influence on the latter aging resistance performance of glove products and blooming are avoided.

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 & Authority Applications(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
Owner SHANDONG XINGYU GLOVES
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