CN100525898C - High hydroscopicity drier - Google Patents
High hydroscopicity drier Download PDFInfo
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- CN100525898C CN100525898C CNB2007100685723A CN200710068572A CN100525898C CN 100525898 C CN100525898 C CN 100525898C CN B2007100685723 A CNB2007100685723 A CN B2007100685723A CN 200710068572 A CN200710068572 A CN 200710068572A CN 100525898 C CN100525898 C CN 100525898C
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Abstract
The invention discloses a high-hydroscopicity dryer containing by mass percent: magnesia 18-58%, anhydrous magnesium chloride 40-80%, and silicon dioxide 0.1-8%. The dryer has high hygroscopic capacity, and a maximum hygroscopic capacity of 200% weight by itself under a humidity of 90% at 40 DEG C. After moisture absorption, the dryer becomes slightly loose lump without forming hard lump or viscose paste, has good appearance, and is applicable on various occasions.
Description
Technical field
The present invention relates to a kind of drier, especially a kind of desiccant composition of mineral substance.
Background technology
Drier is industry and the most frequently used material of civilian damp-prrof packing, and existing drier commodity have (1) silica-gel desiccant: main component is a silica, processes granular or pearl by natural minerals through purifying.(2) the ore deposit drier of living: face shaping is the grey bead, and adds calcium chloride improve moisture absorption, optimum moisture absorption in the environment below 50 ℃ in clay.When temperature is higher than 50 ℃, the ＂ of clay discharges water the ＂ degree just greater than ＂ suction ＂ degree.(3) molecular sieve desiccant: it is the artificial desiccant product that synthesizes and hydrone is had strong adsorptivity.The pore size of molecular sieve can be controlled by the difference of processing technology, and except the absorption aqueous vapor, it can also adsorb other gas.But hydroscopicity is low, environmental protection poor (non-degradable).(4) montmorillonite drier: claim bentonite, amargosite again, through the clay of the oven dry of heating, pulverizing, main feature is nontoxic, degradable, but moisture pick-up properties is lower than silica-gel desiccant.(5) fiber drying agent: first fiber drying agent of weighing is to be formed through the special process exquisiteness by pure natural plant fiber, though the Product Safety height, the processed complex cost is higher.
In the prior art, it is primary raw material with the clay to disclose a kind of drier as Chinese invention patent 03116717.9, it is 10-50% that the drier main body contains calcium-base bentonite, attapulgite 90-50%, except that main body, also contain polyvinyl alcohol 0.2-0.6%, polyacrylamide 0.6-0.2%, calcium chloride 10-30%.
Chinese invention patent application 92108509.5 discloses a kind of highly effective drying agent and preparation method thereof, the solid absorbent that belongs to dry gas, it is carrier with the expanded perlite, combine with magnesium perchlorate and can add metallo-chelate as colored indicator, the weight ratio of perlite, magnesium perchlorate and metallo-chelate is 1: 1: 0.001 to 1: 5: 0.05, makes by thermal dehydration in mixing and normal pressure and the vacuum.
But the lower problem of ubiquity hydroscopicity in the present widely used drier all below 40%, adds a certain amount of calcium chloride hydroscopicity also only below 100% as the hydroscopicity of silica gel, montmorillonite, calcium oxide in montmorillonite, concavo-convex rod.Though it can reach about 100% at fiber drying agent hydroscopicity, cost is than higher.
Summary of the invention
The invention provides a kind of hydroscopicity height, processing, drier easy to use.
A kind of drier of high hydroscopicity, its mass percent consists of:
Magnesia 18～58%
Magnesium chloride 40～80%
Silica 0.1～8%
The mass percent composition of described drier is preferably:
Magnesia 25～35%
Magnesium chloride 63～73%
Silica 1 .5～3%
The mass percent composition of described drier most preferably is:
Magnesia 30%
Magnesium chloride 68%
Silica 2%
Described magnesia is the mixture of light calcined magnesia, activated magnesia or light calcined magnesia and activated magnesia.
Described magnesia preferably uses the mixture of light calcined magnesia and activated magnesia, wherein the mass ratio of light calcined magnesia and activated magnesia is 3:1～3, the mass ratio of light calcined magnesia and activated magnesia is preferably 3:1.5～2.5, and most preferably mass ratio is 3:2.
Described light calcined magnesia light calcined magnesia particle diameter is generally less than 8mm, and is light-burned through high temperature by magnesite, pulverize and get.The light calcined magnesia particle diameter that the present invention adopts is distributed in that existing granule has thinner powder again between 0～8mm.Commercially available light calcined magnesia all can use, the prosperous magnesite in manufacturer such as Haicheng City factory, the water chestnut mining industry of sea, Haicheng City or the like.
Described activated magnesia particle diameter preferably uses 40～80 orders generally at 40～350 orders, and commercially available activated magnesia all can use, and manufacturer such as Xingtai magnesium are deified worker Co., Ltd, magnesium hydroxide factory of Shandong seaization limited company etc.
Though the present invention is if the simple activated magnesia that uses is for can satisfy use on moisture sorption effect, drier is the pulpous state of thickness after the moisture absorption, leaks easily, and an amount of interpolation light calcined magnesia still can keep more open state after can making the drier moisture absorption.Though it is if in good condition after the moisture absorption of simple use light calcined magnesia drier, but wettability power can descend to some extent, and caking is harder after the moisture absorption, the interpolation of activated magnesia can improve the drier activity, and is more thorough so that the hydration reaction that drier and water carry out after the moisture absorption can promptly accelerate and carry out.
Drier of the present invention is in order to reach good wettability power, the magnesium chloride that uses is preferably anhydrous magnesium chloride (promptly not having the crystallization water), also can use the few more wettability power that improves drier that is beneficial to more of the crystallization water though have the magnesium chloride of the crystallization water (as have 2,4,6 etc. the crystallization water).The purity height of anhydrous magnesium chloride also helps improving the wettability power of drier, and preferred purity is more than 97%.Anhydrous magnesium chloride has very strong moisture absorption, forms the compound of many water crystallizations under different temperatures with water, and the particle diameter of the anhydrous magnesium chloride that the present invention selects for use is generally less than 8mm, distributes between 0～8mm, and existing granule has thinner powder again.
Drier of the present invention has added a spot of silica, and purpose is to make slightly pine of drier moisture absorption afterproduct quality, otherwise can form harder bulk after the drier moisture absorption, like this can hinder the further moisture absorption of lump inside, reduces whole wettability power
Described silica can adopt commercially available SiO 2 powder, and also can adopt with silica is diatomite, white carbon of Main Ingredients and Appearance etc.The particle diameter of diatomite, white carbon is generally at 20～120 orders, and preferred 40～80 orders if particle diameter too carefully is easy to produce airborne dust, are unfavorable for processing and use, and particle diameter too slightly influences can result of use.
The principle of drier moisture absorption of the present invention is magnesia and anhydrous magnesium chloride and water effect generation hydration reaction, and forming general formula is a MgOb MgClc H
2The compound of O, MgO also can act on the generation magnesium hydroxide separately with water in addition, and anhydrous magnesium chloride also can act on separately with water and generate the magnesium chloride that has the crystallization water, and silica also has certain wettability power.
Drier of the present invention has following advantage:
Having very strong wettability power, be that hydroscopicity can reach more than 200% of own wt under 90% the condition at 40 ℃, humidity, and existing at present drier hydroscopicity under similarity condition can only reach about 100% of own wt.
Have the good feature of environmental protection, the material environment friendly of selecting for use is nontoxic, and the product after the moisture absorption is easy to decompose at occurring in nature.
Have very high cost performance, the raw material magnesia of use, anhydrous magnesium chloride, silica are cheap, and wettability power is 2～6 times of existing drier.
Of many uses, be fit to the use of various occasions.
The specific embodiment
Embodiment 1
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Light calcined magnesia 18%
Anhydrous magnesium chloride 74%
Silica 8%
Embodiment 2
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Activated magnesia 40%
Anhydrous magnesium chloride 59.9%
Silica 0.1%
Embodiment 3
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 25%
Magnesium chloride 72%
Silica 3%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:1.5.
Embodiment 4
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 35%
Magnesium chloride (having 2 crystallizations water) 63.5%
Silica 1 .5%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:2.5.
Embodiment 5
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 30%
Anhydrous magnesium chloride 68%
Silica 2%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:2.
Embodiment 6
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 18%
Anhydrous magnesium chloride 80%
Silica 2%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:1.5.
Embodiment 7
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 58%
Magnesium chloride (having 4 crystallizations water) 40%
Silica 2%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:1.5.
Embodiment 8
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 34%
Anhydrous magnesium chloride 63%
Silica 3%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:3.
Embodiment 9
All raw materials are evenly mixed, and with the packaging material quantitative package that poisture-penetrability is arranged, the mass percent of raw material consists of as required:
Magnesia 25%
Anhydrous magnesium chloride 73%
Silica 2%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:2.
Embodiment 10
All raw materials are evenly mixed, as required with the packaging material quantitative package that poisture-penetrability is arranged,, the mass percent of raw material consists of:
Magnesia 20%
Anhydrous magnesium chloride 78%
Silica 2%
Wherein magnesia is the mixture of light calcined magnesia and activated magnesia, and the mass ratio of light calcined magnesia and activated magnesia is 3:2.
The wettability power contrast test
Drier and 3 kinds of commercially available drier of embodiment 1～10 preparation are carried out the wettability power test respectively, and test condition is: 40 ℃.Humidity is 90%.
Test result is as follows:
| The drier source | Hydroscopicity after 7 days | State after 7 days |
| Embodiment 1 | 207.6% | Surface moisture, it is harder to lump |
| Embodiment 2 | 194.3% | Dry tack free, blocking loosening |
| Embodiment 3 | 216.7% | Surface moisture.Caking is slightly hard |
| Embodiment 4 | 208.5% | The surface is slightly moist, caking is slightly loose |
| Embodiment 5 | 213.6% | The surface is slightly moist, caking is slightly loose |
| Embodiment 6 | 221.0% | The surface is slightly moist, caking is slightly loose |
| Embodiment 7 | 185.1% | Dry tack free, the caking harder |
| Embodiment 8 | 216.1% | Surface moisture, anhydrous solution, blocking loosening |
| Embodiment 9 | 218.5% | Surface moisture, anhydrous solution |
| Embodiment 10 | 223.2% | Surface moisture, the aqueous solution is arranged |
| Commercially available silica-gel desiccant | 34.8% | No significant change |
| Commercially available ore deposit alive drier | 63.2% | The surface is soaks shape |
| Commercially available fiber drying agent | 98.3% | The surface is soaks shape |
Have very strong wettability power from test result drier of the present invention as can be seen, wettability power is 2～6 times of existing all kinds of drier.
Claims (10)
1, a kind of drier of high hydroscopicity is characterized in that, mass percent consists of:
Magnesia 18～58%
Magnesium chloride 40～80%
Silica 0.1～8%.
2, drier as claimed in claim 1 is characterized in that, mass percent consists of:
Magnesia 25～35%
Magnesium chloride 63～73%
Silica 1 .5～3%.
3, drier as claimed in claim 2 is characterized in that, mass percent consists of:
Magnesia 30%
Magnesium chloride 68%
Silica 2%.
4, as claim 1,2 or 3 described drier, it is characterized in that: described magnesia is light calcined magnesia.
5, as claim 1,2 or 3 described drier, it is characterized in that: described magnesia is activated magnesia.
6, as claim 1,2 or 3 described drier, it is characterized in that: described magnesium chloride is an anhydrous magnesium chloride.
7, drier as claimed in claim 4 is characterized in that: the particle diameter of described light calcined magnesia is distributed in 0～8mm, and particle diameter is not 0.
8, drier as claimed in claim 5 is characterized in that: the particle diameter of described activated magnesia is 40～350 orders.
9, as claim 1,2 or 3 described drier, it is characterized in that: the particle diameter of described magnesium chloride is distributed in 0～8mm, and particle diameter is not 0; The particle diameter of described silica is 20～120 orders.
10, as claim 1,2 or 3 described drier, it is characterized in that: it is the diatomite or the white carbon of Main Ingredients and Appearance that described silica adopts with silica.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100685723A CN100525898C (en) | 2007-05-17 | 2007-05-17 | High hydroscopicity drier |
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| CNB2007100685723A CN100525898C (en) | 2007-05-17 | 2007-05-17 | High hydroscopicity drier |
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| CN101249418A CN101249418A (en) | 2008-08-27 |
| CN100525898C true CN100525898C (en) | 2009-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169351A1 (en) * | 2015-04-20 | 2016-10-27 | 上海小糸车灯有限公司 | Drying device for use within vehicle lamp |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102048765B (en) * | 2009-11-06 | 2012-07-18 | 华北制药集团制剂有限公司 | Method for preventing traditional Chinese medicinal extract powder from absorbing moisture and agglomerating |
| CN102908979B (en) * | 2012-11-12 | 2015-06-24 | 江西理工大学 | Preparation method of efficient adsorbent porous magnesium oxide |
| CN103506066B (en) * | 2013-09-18 | 2015-10-21 | 昆山威胜干燥剂研发中心有限公司 | A kind of Novel mineral silicon dioxide desiccant powder and preparation method thereof |
| CN103657597A (en) * | 2013-12-18 | 2014-03-26 | 达基服装辅料（南通）有限公司 | Adsorbent |
| CN106492620A (en) * | 2016-10-20 | 2017-03-15 | 干霸干燥剂(深圳)有限公司 | Deoxidizing type drying agent |
| CN106995623A (en) * | 2017-05-23 | 2017-08-01 | 汪建军 | A kind of environment-friendlyink ink drier and preparation method thereof |
| CN112121606A (en) * | 2020-10-10 | 2020-12-25 | 杭州家爽包装材料有限公司 | Drying agent and preparation method thereof |
| CN112588091A (en) * | 2020-11-17 | 2021-04-02 | 干霸干燥剂(深圳)有限公司 | Calcium chloride drying agent and preparation method thereof |
| CN112958044A (en) * | 2021-02-03 | 2021-06-15 | 杭州家爽包装材料有限公司 | Preparation method of drying agent and drying agent |
| CN113398874B (en) * | 2021-06-17 | 2023-08-15 | 干霸干燥剂(深圳)有限公司 | Composite drying agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105119A (en) * | 1987-11-09 | 1988-07-13 | 辽宁省地方病防治所 | The manufacture method of magnesium type adsorbent |
| US6221132B1 (en) * | 1999-10-14 | 2001-04-24 | Air Products And Chemicals, Inc. | Vacuum preparation of hydrogen halide drier |
-
2007
- 2007-05-17 CN CNB2007100685723A patent/CN100525898C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105119A (en) * | 1987-11-09 | 1988-07-13 | 辽宁省地方病防治所 | The manufacture method of magnesium type adsorbent |
| US6221132B1 (en) * | 1999-10-14 | 2001-04-24 | Air Products And Chemicals, Inc. | Vacuum preparation of hydrogen halide drier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169351A1 (en) * | 2015-04-20 | 2016-10-27 | 上海小糸车灯有限公司 | Drying device for use within vehicle lamp |
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| CN101249418A (en) | 2008-08-27 |
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