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Hypoallergenic and high-whiteness natural latex foamed sponge product and preparation method thereof

A natural latex, hypoallergenic technology, applied in the field of latex product research, can solve problems such as adverse effects of natural latex stability, processing performance, deterioration of mechanical properties, aging performance, shortened service life of latex sponge products, etc., to reduce the impact on the human body Possibility of allergies, improvement of anti-oxidant and anti-aging properties, effect of reducing the possibility of allergies

Pending Publication Date: 2017-06-13
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various disadvantages in the method for purifying natural rubber latex by the above-mentioned method, either the treatment process is complicated, the production cost is high, and it is difficult to realize industrialized production; Adverse effects, resulting in deterioration of processability, mechanical properties, and aging properties
[0006] Due to the existence of unsaturated double bonds in the molecular structure of natural latex, it is easy to cause it to age under the influence of light, oxygen, heat and other environmental factors, and various properties will deteriorate
Hypoallergenic, high whiteness natural latex foam sponge products such as pillows or mattresses will inevitably turn yellow and black during long-term use, which will seriously affect the appearance whiteness of latex sponge products and the use of sponge products The psychological pleasure of time may be discarded prematurely, and the service life of latex sponge products will be greatly shortened

Method used

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preparation example Construction

[0059] The present invention also provides a kind of preparation method of the natural rubber latex foaming sponge product of hypoallergenicity, high whiteness, comprises the following steps:

[0060] Mix the natural rubber latex, vulcanizing agent, accelerator and anti-aging agent evenly, and leave it at room temperature to obtain the mixed natural rubber latex;

[0061] Adding a stabilizer and a foaming agent to the mixed natural rubber latex, stirring and foaming, then adding a retarded gelling agent and zinc oxide to obtain a foamed latex;

[0062] And the foamed latex is injection molded, gelled, vulcanized, demolded, cleaned and dried to prepare a natural latex foamed sponge product with low allergies and high whiteness.

[0063] It should be noted that the total concentration of the above-mentioned latex must be controlled at not less than 52%, preferably more than 55%.

[0064] It should be understood that the cleaning is water washing, which can be listed as multiple...

Embodiment 1

[0076] A kind of preparation method of hypoallergenic, high whiteness natural rubber latex foamed sponge pillow, comprises the following steps:

[0077] (1) Dilute the concentrated natural rubber latex with water until the dry rubber content is 20%, add 1% latex stabilizer to ensure the stability of the latex properties; add 1% aluminum hydroxide latex solution, after stirring for 0.5h at a stirring speed of 200rpm , standing for 10h; then placed in a latex disc centrifuge with a conventional natural latex centrifugal operation process (rotating speed is 1000rpm) centrifugal concentration, to obtain high-purity purified natural latex.

[0078] (2) Mix 0.5 parts of potassium hydroxide and 70 parts of purified natural rubber latex evenly, add 0.5 parts of sulfur, 0.5 parts of accelerator ZDC and 0.5 parts of anti-aging agent Wingstay~L respectively, stir well and let it stand and mature at room temperature for 2 days, Obtain mixed natural rubber latex, stand-by.

[0079] (3) Ad...

Embodiment 2

[0082] A kind of preparation method of hypoallergenic, high whiteness natural rubber latex foamed sponge pillow, comprises the following steps:

[0083](1) Dilute the concentrated natural rubber latex with water until the dry rubber content is 25%, add 2% latex stabilizer to ensure the stability of the latex properties; add 3% aluminum hydroxide latex solution, after stirring for 1h at a stirring speed of 220rpm, Stand still for 11 hours; then place it in a latex disc centrifuge and centrifuge and concentrate with the conventional natural latex centrifugation process (1200 rpm), to obtain high-purity purified natural latex.

[0084] (2) Mix 1 part of potassium hydroxide and 80 parts of purified natural rubber latex evenly, add 1 part of sulfur, 1 part of accelerator ZDC and 0.8 part of antiaging agent Wingstay~L respectively, stir well and let it stand and mature at room temperature for 3 days, Obtain mixed natural rubber latex, stand-by.

[0085] (3) Add 1 part of potassium ...

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Abstract

The invention discloses a hypoallergenic and high-whiteness natural latex foamed sponge product and a preparation method thereof. The natural latex foam sponge product is prepared from the following raw material components in parts by weight: 70-100 parts of natural latex, 0.5-5 parts of a vulcanizing agent, 1-5 parts of zinc oxide, 0.5-2.5 parts of an accelerator, 0.5-1.5 parts of an anti-aging agent, 0.5-3 parts of a delayed-action gelling agent, 1-5 parts of a foam stabilizer and 0.5-3 parts of a foaming agent. The natural latex foamed sponge product disclosed by the invention has the advantages that appearance whiteness and antioxidant and anti-ageing properties of the natural latex foam sponge product are improved, a period that the natural latex foam sponge product does not turn yellow or is blackened is prolonged, grade and quality of the natural latex foam sponge product are improved, and a probability that the natural latex foam sponge product develops an allergy on human body is reduced.

Description

technical field [0001] The invention relates to the technical field of latex product research, in particular to a hypoallergenic, high-whiteness natural latex foam sponge product and a preparation method thereof. Background technique [0002] Natural rubber latex sponge is a low-density porous open material. It is widely used because of its light weight, excellent cushioning performance, high elasticity, special comfortable touch, creep resistance and permanent deformation resistance, and antibacterial properties. It is used in many aspects such as furniture industry, automobile industry, hygiene and sporting goods. With the enhancement of people's awareness of health, the requirements for the latex sponge products used are getting higher and higher. For example, latex sponge pillows / mattresses that are frequently used are required to be free of toxic substances, natural and environmentally friendly, and durable to protect people's health . [0003] Natural latex, a thermo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/02C08L89/06C08K13/02C08K3/34C08K3/22C08C1/04C08J9/04
CPCC08C1/04C08J9/04C08J2307/02C08J2489/00C08L7/02C08L2203/14C08L2205/03C08L89/06C08K13/02C08K3/34C08K2003/2296
Inventor 吕明哲方蕾李普旺李永振杨春亮杨子明余和平张帆
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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