Application of graphene in natural latex preservation and latex product
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A technology of natural latex and latex products, applied in the field of natural latex, can solve problems such as vulcanization difficulties, damage, and impact on product exports, and achieve the effects of benefiting human health, reducing production steps, and promoting microcirculation
Active Publication Date: 2016-04-20
JINAN SHENGQUAN GROUP SHARE HLDG
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However, there are two major problems in the product after adding ammonia: one is the odor problem, the human body is unacceptable to the smell of ammonia volatilized in the product or it may cause skin allergies, which is irritating and harmful to human health, and may also affect the export of the product; The other is a chemical problem. The vulcanization process of natural latex is a chemical cross-linking process. The presence of ammonia will cause harmful side reactions in this process, resulting in difficulty in vulcanization. It has a certain impact on the application of natural latex and the development of modification technology. limits
However, the existing technology is still difficult to ensure that the shelf life of natural latex storage is not affected
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Embodiment 1
[0065] Embodiment 1: the specific preparation technology of biomass graphene
[0066] (1) Under the action of a catalyst, the biomass carbon source is subjected to catalytic treatment to obtain a precursor;
[0067] (2) Under the condition of protective gas, the precursor is kept at 150° C. for 2 hours to obtain the first intermediate;
[0068] (3) under the condition of protective gas, the temperature of the first intermediate is raised to 400° C. for 3.5 hours to obtain the second intermediate;
[0069] (4) under the condition of protective gas, the temperature of the second intermediate is raised to 1200° C. for 3 hours to obtain the third intermediate;
[0070] (5) washing the third intermediate with alkali, pickling, and water successively to obtain graphene;
[0071] The heating rate in the steps (3) and (4) is 15° C. / min˜16° C. / min.
[0072] The biomass graphene contains a sheet structure of graphene with less than 10 layers, an SP3 hybrid structure of carbon and min...
Embodiment 2～11
[0074] In fresh latex, add the graphene that the embodiment 1 of different quality makes and preserve. Relevant data and results refer to Table 1, and Table 1 is the relevant data and results of Examples 2-17 preserved natural latex and natural latex products (natural raw rubber) and comparative examples.
Embodiment 12～13
[0076] In fresh latex, add 0.5% the graphene that the embodiment 1 makes, add dispersing agent simultaneously, make graphene reach better dispersion effect, be beneficial to natural latex preservation.
[0077] See Table 1 for relevant data and results.
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Abstract
The invention relates to the technical field of natural latex, and provides application of graphene in natural latex preservation and a latex product. The natural latex is preserved by adopting graphene, therefore, an ammonia stabilizer does not need to be additionally added in the natural latex or the few ammonia stabilizer is added into the natural latex, the natural latex has little pungent odor or even has no pungent odor, and the preservation quality guarantee period is not influenced. The latex product is prepared from the natural latex obtained through preservation; the latex product has the antibacterial and bacteriostatic functions and is little in pungent odor and long in preservation quality guarantee period. In addition, the latex product further has the far infrared function, and therefore microcirculation of a human body can be promoted; the latex product has the excellent mechanical property, adsorption function, moisture absorbing and sweat releasing functions and the like and is good in application property.
Description
technical field [0001] The invention relates to the technical field of natural latex, in particular to an application of graphene in preserving natural latex and latex products. Background technique [0002] Natural latex generally refers to natural latex, a thermoplastic synthetic resin belonging to the rubber category, which has the characteristics of high elasticity, good film-forming performance during bonding, and flexible film. In order to improve the heat resistance, durability and aging resistance of natural latex, natural latex is often vulcanized and then used as a base material. The fresh latex flowing out from the gum tree has good fluidity and a special sweet smell. Natural latex generally contains ingredients such as protein and sugar, which will solidify natural latex under the action of microorganisms or enzymes. If fresh latex is not treated in any way, it will usually undergo obvious corruption or deterioration after 6 to 12 hours. When the temperature is...
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