Plastic mineral silica flaky dessicant and preparation method thereof

A technology of silica and desiccant, which is applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve problems such as inability to pack tightly, drop of bagged silica gel desiccant, and low absorption capacity, achieving huge Application prospect and economic value, effective space saving, high moisture absorption effect

Active Publication Date: 2014-01-15
昆山威胜干燥剂研发中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, bagged silica gel and other desiccants have been widely used. The main defect is that silica gel and other desiccants must be repacked with air-permeable non-woven fabrics or paper, and cannot be directly attached to the product packaging that requires desiccant. , and the bagged silica gel desiccant will fall and break, which may cause secondary pollution of the product; and the traditional bagged silica gel desiccant placement process can only be placed manually, and continuous automatic delivery cannot be realized, thus limiting its automation. industry process
[0005] The disadvantages of the above technical content are: the desiccant must be repacked with breathable non-woven fabric or paper before it can be used in various moisture-proof fields; and the amount of space is small, and the total absorption is bound to be low

Method used

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  • Plastic mineral silica flaky dessicant and preparation method thereof
  • Plastic mineral silica flaky dessicant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation of mineral silica powder

[0040] Step 1: Natural Mineral Purification

[0041] Stir and soak 5 parts of montmorillonite ore soil with 80 parts of purified water for more than 50 hours, wait for it to fully expand, and sieve through 200 mesh or more to separate large particles of impurity ore soil.

[0042] Step Two: Wrap

[0043] Put 8 parts of the above-mentioned purified minerals and fine-pored (type A) silica powder (particle size above 400 mesh) into the flake machine, grind for more than 60 hours, and centrifuge the mixed material in a high-speed centrifuge (rotating speed of 2000 rpm above), remove the particles, and prepare the coating solution.

[0044] Step Three: Dry

[0045] Concentrate the prepared coating solution and dry it in vacuum to obtain mineral silica desiccant powder.

Embodiment 2

[0046] Embodiment 2: the preparation of mineral silica powder

[0047] Step 1: Natural Mineral Purification

[0048] Stir and soak 2 parts of montmorillonite ore soil and 3 parts of attapulgite clay with 100 parts of purified water for more than 50 hours, wait for them to fully expand, and then sieve through 200 mesh or more to separate large particles of impurity ore soil.

[0049] Step Two: Wrap

[0050] Put the above-mentioned purified minerals together with 3 parts of fine-pore (type A) silica gel powder (particle size: more than 400 mesh) and 2 parts of coarse-pore (type B) silica gel powder into the peeling machine, grind for more than 60 hours, and put The mixed material is centrifuged in a high-speed centrifuge (with a speed of more than 2000 rpm) to remove particulate matter and obtain a coating solution.

[0051] Step Three: Dry

[0052] Concentrate the obtained coating solution and dry it in a drying box to obtain mineral silica desiccant powder.

Embodiment 3

[0053] Embodiment 3: Preparation of Plastic Mineral Silica Flake Desiccant

[0054] The first step: material mixing

[0055] Mix 3 parts of natural mineral silica desiccant powder obtained in Example 1 with 1 part of low-density polyethylene (LDPE) plastic powder and 0.1 part of carboxymethylcellulose (CMC).

[0056] Step 2: Compression molding

[0057] The material mixed in the previous step is heated in a mold of corresponding specifications and sizes by a mechanical tablet press (at a temperature of 60 degrees), and pressed into blocks to obtain blocks;

[0058] Step Three: Dry

[0059] The aforesaid blocks are vacuum-dried to obtain a plastic mineral silicon dioxide flaky desiccant.

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Abstract

The invention relates to a plastic mineral silica flaky dessicant and a preparation method thereof. The plastic mineral silica flaky dessicant comprises the following components by weight percentage: 70-90% of mineral silica dessicant powder, 10-30% of high-molecule plastic, and 0-5% of auxiliary material. Compared with the prior art, the plastic mineral silica flaky dessicant can be more consistent with a space for placing the dessicant, can be directly used without packing, and is safe and environment-friendly; the quantity of dessicant placement in the space is increased greatly; in the same volume, the hygroscopic capacity is higher; automatic production can be achieved; and the dessicant has huge application prospect and economic value.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a plastic mineral silicon dioxide flake desiccant and a preparation method thereof. Background technique [0002] With the widespread use of desiccants, it is required that the desiccant be smaller in size and better fit the packaging container; it is also required that the desiccant is safe and reliable during use, has stable hygroscopic performance, and can be regenerated and used repeatedly. [0003] In recent years, bagged silica gel and other desiccants have been widely used. The main defect is that silica gel and other desiccants must be repacked with air-permeable non-woven fabrics or paper, and cannot be directly attached to the product packaging that requires desiccant. , and the bagged silica gel desiccant will fall and break, which may cause secondary pollution of the product; and the traditional bagged silica gel desiccant placement process can only be placed manuall...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/10B01J20/30B01D53/28
Inventor 沈飞
Owner 昆山威胜干燥剂研发中心有限公司
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