Natural latex sponge product as well as preparation method and application thereof

A technology for natural latex and sponge products, applied in the field of natural latex, can solve the problems affecting the product quality and consumer experience of natural latex sponge products, the latex sponge is easy to age, and the contact area is large, so as to achieve suitable large-scale production, excellent mechanical properties and Anti-aging performance, easy operation effect

Active Publication Date: 2019-12-06
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The natural latex of Hevea brasiliensis is a natural latex raw material commonly used to prepare latex sponge products. It contains non-glue components such as protein, and the protein will ferment under the action of bacteria to produce odor, which will affect the quality and quality of natural latex sponge products. consumer experience
Generally adopt low-protein natural latex (nitrogen content to be lower than 0.01%) in order to reduce the bad smell in the natural latex sponge product to prepare natural latex sponge product, but the nitrogen content in the natural latex sponge product is reduced to the cost below 0.01% Very high; and because the natural latex sponge products have a large contact area with the air, the natural latex sponge products do not contain protein or the protein content is extremely low, which will cause problems such as aging and collapse of the latex sponge during the drying process

Method used

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  • Natural latex sponge product as well as preparation method and application thereof
  • Natural latex sponge product as well as preparation method and application thereof
  • Natural latex sponge product as well as preparation method and application thereof

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preparation example Construction

[0051] The present invention provides the preparation method of natural rubber latex sponge product described in above-mentioned technical scheme, comprises the following steps:

[0052] Mix low-protein natural rubber latex, coconut shell activated carbon, compound vulcanization accelerator, and anti-aging agent and then mature to obtain pre-mixed latex;

[0053] Mixing the premixed latex, foaming agent, zinc oxide and gelling agent to obtain foamed latex;

[0054] The foamed latex is sequentially subjected to injection molding, shaping, bactericide treatment and vulcanization to obtain a natural latex sponge product.

[0055] The invention mixes low-protein natural rubber latex, coconut shell activated carbon, composite vulcanization accelerator and anti-aging agent and then matures to obtain premixed latex.

[0056] In the present invention, the composite vulcanization accelerator is preferably used in the form of a composite vulcanization accelerator aqueous solution; the ...

Embodiment 1

[0071] (1) 1kg each of the ZDC accelerator, the MBT accelerator and the DPG accelerator is placed in a ball mill to grind, and deionized water is added to make a 20% aqueous solution of the composite vulcanization accelerator;

[0072] Mix low-protein natural rubber latex (nitrogen content: 0.15wt%, 100kg), composite vulcanization accelerator aqueous solution, and tocopherol (0.5kg), and leave to mature at 35°C for 48 hours to obtain premixed latex;

[0073] (2) Add foaming agent (1kg) and coconut shell activated carbon (0.5kg, particle diameter is 50~200nm, specific surface area is 1500~3000m2) in described premixed latex 2 / g), stirring at a rotating speed of 1200r / min for 90min foaming, stirring for 30min at a rotating speed of 250r / min for uniform foaming, adding zinc oxide (2kg) and gelling agent (0.5kg) at a rotating speed of Stir 45min under the condition of 400r / min, obtain foamed latex;

[0074] (3) Immediately inject the foamed latex when it reaches the gelation poi...

Embodiment 2

[0076] (1) 0.5 kg of the ZDC accelerator, the MBT accelerator and the DPG accelerator are placed in a ball mill for grinding, and deionized water is added to make a 20% aqueous solution of the composite vulcanization accelerator;

[0077] Mix low-protein natural rubber latex (nitrogen content: 0.10wt%, 100kg), composite vulcanization accelerator aqueous solution, and tocopherol (2kg), and leave to mature at 35°C for 24 hours to obtain premixed latex;

[0078] (2) Add foaming agent (1kg) and coconut shell activated carbon (2kg, particle diameter is 50~200nm, specific surface area is 1500~3000m2) in described premixed latex 2 / g), stirring at a rotating speed of 1200r / min for 90min to foam, stirring at a rotating speed of 350r / min for 40min to evenly foam, adding zinc oxide (3kg) and gelling agent (1kg) at a rotating speed of 500r Stir 60min under the condition of / min, obtain foamed latex;

[0079] (3) Immediately inject the foamed latex when it reaches the gelation point, tak...

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Abstract

The invention provides a natural latex sponge product as well as a preparation method and application thereof, and belongs to the technical field of natural latex. The natural latex sponge product provided by the invention is prepared from the following components in parts by weight: 100 parts of low-protein natural latex; 0.5 to 2 parts of coconut shell activated carbon; 0.5 to 2 parts of a composite vulcanization accelerator; 0.5 to 2 parts of an antioxidant; 1 to 2 parts of a foaming agent; 2 to 3 parts of zinc oxide; 0.5 to 1 part of a gelling agent; and 0.1 to 0.3 part of a bactericide. The natural rubber latex sponge product provided by the invention uses the low-protein natural rubber latex as a raw material and uses the foaming agent, the gelling agent, the antioxidant and the zincoxide in a cooperation mode to obtain the natural latex sponge product under the combined action of the coconut shell activated carbon, the composite vulcanization accelerator and the bactericide, and the natural latex sponge product has high porosity, excellent mechanical properties, aging resistance, and no odor, and is suitable for promotion and application in latex sheets, latex sponge mattresses, latex sponge pillows or latex sponge cushions.

Description

technical field [0001] The invention relates to the technical field of natural latex, in particular to a natural latex sponge product and its preparation method and application. Background technique [0002] Natural rubber latex sponge product is a sponge product with multi-cellular structure prepared from natural latex as the main raw material. It has the characteristics of light weight, good buffer performance, comfortable touch, and environmental protection. It is widely used in bedding, automobile industry and Sporting goods, etc. [0003] The natural latex of Hevea brasiliensis is a natural latex raw material commonly used to prepare latex sponge products. It contains non-glue components such as protein, and the protein will ferment under the action of bacteria to produce odor, which will affect the quality and quality of natural latex sponge products. consumption experience. Generally adopt low-protein natural latex (nitrogen content to be lower than 0.01%) in order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/02C08K13/04C08K7/24C08K3/22C08K5/13C08K3/34C08K3/24C08K5/42C08J9/04
CPCC08J9/0023C08J9/0033C08J9/0066C08J9/04C08J2205/052C08J2205/06C08J2307/02
Inventor 张志扬廖禄生张炼辉张福全王兵兵李高荣汪月琼彭政
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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