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Calcium chloride desiccant and preparation method thereof

A calcium chloride and desiccant technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of desiccant's inability to absorb water, lag in water absorption and expansion capacity, and excessive customer consumption, so as to avoid moisture The effect of leakage, deliquescence and water absorption, and low leakage risk

Pending Publication Date: 2021-04-02
SUPER DRY DESICCANT SHENZHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, calcium chloride desiccant also has its own defects, such as the super deliquescence ability of calcium chloride, while the water absorption and swelling ability of starch is relatively lagging behind, which makes the desiccant unable to absorb and swell into a gel state in the early stage. After a period of time, when the desiccant absorbs water, it will overflow in liquid form and there is a risk of leakage. The leaked brine containing calcium chloride will have a strong corrosive effect on the items and easily cause damage to the items.
At the same time, because some transportation industries have strict requirements on liquid items, it will cause customers to spend too much on product liquid description and quarantine

Method used

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  • Calcium chloride desiccant and preparation method thereof

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preparation example Construction

[0043] Another aspect of the present invention is to protect the preparation method of above-mentioned calcium chloride desiccant, comprising the following steps:

[0044] (1) Raw material premixing: take the starch, polyphosphate, solid alkali and initiator in the mass ratio and stir in pure water to form a paste, then continue to stir for 30-60 minutes to make the mixture completely uniform and then let it stand for 30-60 minutes minute;

[0045] (2) Drying and ball milling: place the above mixture in an oven at 120°C±5°C for drying, and then place it in a planetary ball mill and pulverize it into powder;

[0046] (3) Stirring and mixing: add calcium chloride, superabsorbent resin, silicon dioxide powder and powder obtained by drying and ball milling in a mass ratio, and stir evenly in a mixer to obtain the final calcium chloride desiccant.

Embodiment 1

[0048] The invention discloses a calcium chloride desiccant, which comprises the following components by mass: calcium chloride: 10-80 parts; superabsorbent resin: 10-50 parts; starch: 10-60 parts; polyphosphate: 1 -10 parts; solid base: 0.1-1 part; initiator: 0.1-1 part; nano silicon dioxide: 0.1-1 part. .

[0049] In this embodiment, the polyphosphate is sodium trimetaphosphate or sodium hexametaphosphate; the solid base is solid base AOP-KF; the initiator is potassium persulfate and / or ammonium persulfate. Calcium chloride is technical grade anhydrous calcium chloride and / or dihydrate calcium chloride. The super absorbent resin is one or more of polyacrylic acid, sodium polyacrylate and / or polyacrylamide. The starch is one or more of tapioca starch, sweet potato starch, sweet potato starch, potato starch, wheat starch and / or corn starch. The sieve aperture of silica powder is about 100 mesh.

[0050] The preparation method of present embodiment calcium chloride desiccan...

Embodiment 2

[0055] The invention discloses a calcium chloride desiccant, which comprises the following components by mass: calcium chloride: 10-80 parts; superabsorbent resin: 10-50 parts; starch: 10-60 parts; polyphosphate: 1 -10 parts; solid base: 0.1-1 part; initiator: 0.1-1 part; nano silicon dioxide: 0.1-1 part. .

[0056] In this embodiment, the polyphosphate is sodium trimetaphosphate or sodium hexametaphosphate; the solid base is solid base AOP-KF; the initiator is potassium persulfate and / or ammonium persulfate. Calcium chloride is technical grade anhydrous calcium chloride and / or dihydrate calcium chloride. The super absorbent resin is one or more of polyacrylic acid, sodium polyacrylate and / or polyacrylamide. The starch is one or more of tapioca starch, sweet potato starch, sweet potato starch, potato starch, wheat starch and / or corn starch. The sieve aperture of silica powder is about 100 mesh.

[0057]The preparation method of present embodiment calcium chloride desiccant...

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Abstract

The invention discloses a calcium chloride desiccant and a preparation method thereof. The calcium chloride desiccant comprises the following components in parts by mass: 10-80 parts of calcium chloride; 10-50 parts of super absorbent resin; 10-60 parts of starch; 1-10 parts of polyphosphate; 0.1-1 part of solid alkali; 0.1-1 part of an initiator; and 0.1-1 part of nano silicon dioxide. The preparation method comprises the steps of pre-mixing, drying and ball-milling, stirring and mixing and the like. The calcium chloride desiccant and the preparation method thereof have the characteristics ofhigh moisture absorption rate, high water absorption expansion rate, low leakage risk and convenience in processing and use.

Description

technical field [0001] The invention relates to the technical field of desiccants, in particular to a calcium chloride desiccant and a preparation method thereof. Background technique [0002] Desiccant is a substance that can remove part of the moisture in the wet material. The control of moisture is closely related to the quality of the product. If the product cannot control the humidity, the bacteria and mold in the product will reproduce at an alarming rate under high temperature and high humidity. , making the product damaged and deteriorated. [0003] The current moisture-proof solutions for products are inseparable from the use of desiccants. There are many types of desiccants currently in use, including silica gel desiccants, montmorillonite desiccants, molecular sieve desiccants, and calcium chloride desiccants. The main component of silica gel desiccant is silica, which is purified and processed from natural minerals into particles, which belongs to physical water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28
CPCB01D53/28B01D53/263
Inventor 廖小亮苏卓欣吴丽华
Owner SUPER DRY DESICCANT SHENZHEN
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