CN103506076B - Novel conductive mineral silicon dioxide flake desiccant and preparation method thereof - Google Patents
Novel conductive mineral silicon dioxide flake desiccant and preparation method thereof Download PDFInfo
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- CN103506076B CN103506076B CN201310429857.0A CN201310429857A CN103506076B CN 103506076 B CN103506076 B CN 103506076B CN 201310429857 A CN201310429857 A CN 201310429857A CN 103506076 B CN103506076 B CN 103506076B
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Abstract
The invention relates to novel conductive mineral silicon dioxide flake desiccant and a preparation method thereof. The desiccant comprises the following components in percentage by weight: 2-10% of conductive carbon fibers, 60-94% of mineral silicon dioxide desiccant powder and 0.1-30% of high molecular materials. Compared with traditional bagged conductive silica-gel desiccant in performance, the conductive mineral silicon dioxide flake desiccant provided by the invention has more obvious conductivity under the condition of same volume; moreover, the desiccant can be accordant with the size of a used space, is safe and environment-friendly, can achieve automatic production, and has huge application foreground and economic value.
Description
Technical field
The present invention relates to chemical material field, particularly, relate to a kind of Novel conductive mineral silicon dioxide flake desiccant and preparation method thereof.
Background technology
Along with widely using of drier, require that drier volume is less, and conjunction can better be carved mutually with packing container; And requiring that drier is in use safe and reliable, moisture pick-up properties is stablized, and can be reproduced, Reusability; More require that drier has excellent electric conductivity, can not electrostatic be played.
What generally adopt in recent years is the drier such as packed silica gel, its major defect is: the drier such as silica gel must be packed again through gas permeability material non-woven fabrics or paper etc., can not directly and the packing of product of placing drier be needed to fit tightly, and the situation that packed silica-gel desiccant drops and break can be produced, there is the possibility causing secondary pollution product; And conventional pouch silica-gel desiccant put procedure can only manually be placed, continuous and automatic can not be realized and throw in, thus limit its Automation Industry process.The housing material that bagged dryer adopts, through antistatic surface process or reach at surface printing conductive ink and have electric conductivity, but electric conductivity is lower.
Patent application CN03135587.0 discloses a kind of composite type zeolite drier, take epidesmine as primary raw material, with the kaolin in clay mineral, or montmorillonite, or sepiolite etc., and with the starch grafted acrylate in water-absorbing resins, or SPA, or the macromolecular material such as starch graft acrylamide, mix in the ratio of 75 ~ 85: 10 ~ 15: 5 ~ 10 (in gross weights for 100) and make base-material, add calcite or the coal dust of 0 ~ 5% of base-material weight again, or flyash is as pore creating material, with add the waterglass of base-material weight 15 ~ 30% or epoxy resin as after binding agent together Homogeneous phase mixing, extruded, after feeding baker dries moisture content, or namely cooling of coming out of the stove drops into or acid, or alkali, or soak in sodium salt or ammonium salt solution and implement modification, cleaning, dry, or high-temperature baking is carried out in intensification again, i.e. obtained zeolite drier.
The shortcoming that above-mentioned technology contents exists is: its drier must carry out packing again with Breathable nonwoven or paper, just can be used in various moistureproof field; And space injected volume is few, gross absorption will certainly be lower, and do not have electric conductivity, easily plays electrostatic.Conductive carbon fibre is not applied in drier in prior art, if so a kind of drier can be developed, certainly will will has huge application prospect and economic worth.
Summary of the invention
In order to solve problems of the prior art, an object of the present invention is to provide a kind of Novel conductive mineral silicon dioxide flake desiccant.
Another object of the present invention is to, a kind of preparation method of described Novel conductive mineral silicon dioxide flake desiccant is provided.
Novel conductive mineral silicon dioxide flake desiccant provided by the invention, comprises the component of following weight percentage: conductive carbon fibre 2 ~ 10%, mineral silica drier powder 60 ~ 94%, macromolecular material 0.1 ~ 30%.
Novel conductive mineral silicon dioxide flake desiccant provided by the invention, preferably, comprises the component of following weight percentage: conductive carbon fibre 4.0 ~ 5.5%, mineral silica drier powder 65 ~ 90%, macromolecular material 8.5 ~ 27.0%.
Above-mentioned percentage composition is the percentage that the weight of each component accounts for all components (conductive carbon fibre, mineral silica drier powder and macromolecular material etc.) gross weight.
Conductive carbon fibre of the present invention is high-strength conductive carbon fiber.
Wherein, described mineral silica drier powder is: the mixture of mineral and silica, and wherein both weight ratios are (1 ~ 3): (1 ~ 3).
Preferably, in mineral silica drier powder, the weight ratio of mineral and silica is (7 ~ 10): (10 ~ 13).
Wherein, described mineral are natural minerals, i.e. the mineral of natural degradable; Preferably, described mineral are selected from: one or more in montmorillonite, bentonite and attapulgite clay.
Wherein, described silica is selected from: one or both in pore (A type) and gross porosity (Type B) silica gel, and its wettability power is higher.
Wherein, described macromolecular material is selected from: low density polyethylene (LDPE) (LDPE), high density polyethylene (HDPE) (HDPE), polypropylene (PP), polystyrene (PS), PLA (PLA), hydroxypropyl methylcellulose (HPMC) and carboxymethyl cellulose (CMC) etc. one or more, preferred low density polyethylene (LDPE) (LDPE).Macromolecular material is Powdered.Add macromolecular material and mainly play dust-proof effect.
The preparation method of Novel conductive mineral silicon dioxide flake desiccant provided by the invention, comprises the following steps:
1) mineral silica drier powder is mixed in described ratio with conductive carbon fibre, macromolecular material;
2) by compressing for mixed component, the tablet of dimension size is made;
3) the tablet drying will made, obtains electric conductivity mineral silica flaky dessicant.
The preparation method of Novel conductive mineral silicon dioxide flake desiccant provided by the invention, further, comprises the following steps:
1) prepare tablet material: by mineral silica drier powder and conductive carbon fibre, macromolecular material mixes in described ratio;
2) compressing: mixed component is compressing through tablet press machine heating, make the tablet of dimension size;
3) activate: by the tablet made through vacuum drying, obtain electric conductivity mineral silica flaky dessicant.
Wherein, step 2) in, the temperature of heating is: 60 ~ 120 DEG C, preferably 70 ~ 90 DEG C.
Novel conductive mineral silicon dioxide flake desiccant provided by the invention, its mainly specifically for:
One, the packing of product can be made to be closely linked, save the useful space greatly, and continuous and automatic operation can be realized;
Two, there is electric conductivity and do not produce electrostatic, can activate by direct-electrifying;
Three, renewable and be reused;
Four, more can be consistent with placing the space of drier, space injected volume is high, and moisture pick-up properties temperature and hygroscopic capacity promote greatly;
Five, adopt raw material all harmless, safe and reliable; Environmentally safe, odorless, tasteless, non-corrosiveness.
Novel conductive mineral silicon dioxide flake desiccant provided by the invention, it is the one of moisture protected dry drying prescription, employing conductive carbon fibre is conductive material, macromolecular material is binding agent, and mineral silica drier powder is primary sorbent etc., through mixing, form in the compacting of a certain size sized mold, make it have various fixing external form, have sufficient mechanical strength, there is excellent conductive performance.
In a word, electric conductivity mineral silica flaky dessicant provided by the invention, in performance compared with conventional pouch electric conductivity silica-gel desiccant, in same volume situation, electric conductivity is more obvious; Further, can be consistent with usage space size, safety and environmental protection, can automated production be realized, there is huge application prospect and economic worth.
Detailed description of the invention
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Unit of the present invention " part " can refer to: jin, kilogram, gram, kilogram, ton ... etc. unit of weight, determine according to practical condition.
The routine that the NM operation of the present invention and technological parameter are this area is selected, the conventional material of material used also for can commercially obtain.
The specification of the low density polyethylene (LDPE) (LDPE) that the present invention is used is: the following powder of 200 order.
The conductive carbon fibre purchased from American Ya Qi international corporation that the present invention is used.
Embodiment 1: the preparation of mineral silica powder
The first step: natural minerals is purified
First purifying waste water of montmorillonite ore deposit soil 5 parts of use 80 parts is stirred fully immersion more than 50 hours, treat that it fully expands, sieve more than 200 orders, isolate bulky grain thing impurity ore deposit soil.
Second step: parcel
The mineral of above-mentioned purification and pore (A type) silicon dioxide powder (particle diameter is more than 400 orders) 8 parts are dropped into machine for cutting charge into pieces, grind more than 60 hours, by mixed material supercentrifuge centrifugal (rotating speed is more than 2000 revs/min), removing particle, obtained parcel liquid.
3rd step: dry
Obtained parcel liquid is concentrated, and vacuum drying, obtain mineral silica drier powder.
Embodiment 2: the preparation of mineral silica powder
The first step: natural minerals is purified
First 2 parts, montmorillonite ore deposit soil and purifying waste water of attapulgite clay 3 parts of use 100 parts are stirred fully immersion more than 50 hours, treat that it fully expands, sieve more than 200 orders, isolate bulky grain thing impurity ore deposit soil.
Second step: parcel
By the mineral of above-mentioned purification and pore (A type) silica white (particle diameter is: particle diameter is more than 400 orders) 3 parts, gross porosity (Type B) silica white 2 parts drops into machine for cutting charge into pieces together, grind more than 60 hours, by mixed material supercentrifuge centrifugal (rotating speed is more than 2000 revs/min), removing particle, obtained parcel liquid.
3rd step: dry
Obtained parcel liquid is concentrated, and drying box is dry, obtained mineral silica drier powder.
Embodiment 3: the preparation of electric conductivity mineral silica flaky dessicant
The first step: material prepares
By 10 parts, mineral silica drier powder being obtained by embodiment 1 and conductive carbon fibre 0.5 part, 1 part, LDPE powder is mixing fully.
Second step: compressing
By above-mentioned mixed material through tablet press machine heating (temperature is 70 DEG C), make type at mould inner pressure.
3rd step: activation
By the tablet made through vacuum drying, obtain electric conductivity mineral silica flaky dessicant.
Embodiment 4: the preparation of electric conductivity mineral silica flaky dessicant
The first step: material prepares
By 10 parts, mineral silica drier powder being obtained by embodiment 1 and conductive carbon fibre 0.8 part, 4 parts, LDPE powder is mixing fully.
Second step: compressing
By above-mentioned mixed material through tablet press machine heating (temperature is 90 DEG C), make type at mould inner pressure.
3rd step: activation
By the tablet made through vacuum drying, obtain electric conductivity mineral silica flaky dessicant.
Experimental example
Novel conductive mineral silicon dioxide flake desiccant of the present invention (product obtained by embodiment 3), the conventional method of this area is adopted to carry out performance test with the drier that existing market is sold (packed silica-gel desiccant), except functions/drying, electric conductivity contrast following (to place drier space 70.00 × 80.00 × 7.00mm):
As can be seen from the above table: Novel conductive mineral silicon dioxide flake desiccant of the present invention, more can be consistent with the space of placing drier compared with existing packed silica-gel desiccant; Further, the amount of placing drier in space improves very large, and total hygroscopic capacity has great raising; In addition, the electric conductivity of type mineral silica flaky dessicant of the present invention will be far superior to existing packed silica-gel desiccant.
Other embodiments and embodiment 3 effect similar, but be excellent with embodiment 3.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (8)
1. an electric conductivity mineral silica flaky dessicant, is prepared from by the component of following weight percentage: conductive carbon fibre 2 ~ 10%, mineral silica drier powder 60 ~ 94%, macromolecular material 0.1 ~ 30%; Described mineral silica drier powder is: the mixture of mineral and silica, and the weight ratio of its Minerals and silica is (1 ~ 3): (1 ~ 3).
2. electric conductivity mineral silica flaky dessicant according to claim 1, it is characterized in that, be prepared from by the component of following weight percentage: conductive carbon fibre 4.0 ~ 5.5%, mineral silica drier powder 65 ~ 90%, macromolecular material 8.5 ~ 27.0%, above-mentioned three kinds of component sums equal 100%.
3. electric conductivity mineral silica flaky dessicant according to claim 1, is characterized in that, the weight ratio of mineral and silica is (7 ~ 10): (10 ~ 13).
4. the electric conductivity mineral silica flaky dessicant according to claim 1 or 3, is characterized in that, described mineral are one or more in montmorillonite, bentonite and attapulgite clay; Described silica is selected from: one or both in pore and silochrom.
5. electric conductivity mineral silica flaky dessicant according to claim 1 and 2, it is characterized in that, described macromolecular material is selected from: low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, polystyrene, PLA, hydroxypropyl methylcellulose and carboxymethyl cellulose one or more.
6. the preparation method of the electric conductivity mineral silica flaky dessicant described in Claims 1 to 5 any one, comprises the following steps:
1) mineral silica drier powder is mixed in described ratio with conductive carbon fibre, macromolecular material;
2) by compressing for mixed component, the tablet of dimension size is made;
3) the tablet drying will made, obtains electric conductivity mineral silica flaky dessicant.
7. method according to claim 6, is characterized in that, comprises the following steps:
1) prepare tablet material: by mineral silica drier powder and conductive carbon fibre, macromolecular material mixes in described ratio;
2) compressing: mixed component is compressing through tablet press machine heating, make the tablet of dimension size;
3) activate: by the tablet made through vacuum drying, obtain electric conductivity mineral silica flaky dessicant.
8. method according to claim 7, is characterized in that, step 2) in, the temperature of heating is 60 ~ 120 DEG C.
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| CN201310429857.0A CN103506076B (en) | 2013-09-18 | 2013-09-18 | Novel conductive mineral silicon dioxide flake desiccant and preparation method thereof |
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| CN201310429857.0A CN103506076B (en) | 2013-09-18 | 2013-09-18 | Novel conductive mineral silicon dioxide flake desiccant and preparation method thereof |
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| CN103506076B true CN103506076B (en) | 2015-05-13 |
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| CN101229508B (en) * | 2007-10-18 | 2011-01-19 | 周健 | Macromolecule radical hygroscopic material and preparing method thereof |
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Owner name: KUNSHAN WEISHENG DESICCANT CO., LTD. Free format text: FORMER OWNER: KUNSHAN WEISHENG DESICCANT RESEARCH AND DEVELOPMENT CENTER CO., LTD. Effective date: 20150724 |
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Effective date of registration: 20150724 Address after: 215345 Jiangsu city of Kunshan province Dianshan Lake Dian Xing Road No. 97 Kunshan wasion desiccant Co. Ltd. Patentee after: KUNSHAN WISE DRYING AGENT CO., LTD. Address before: 215345 Jiangsu city of Kunshan province Dianshan Lake Dian Xing Road No. 97 Patentee before: Kunshan Wise Desiccant Research & Development Center Co., Ltd. |
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