CN101161683A - Method for preparing silicane fecula - Google Patents
Method for preparing silicane fecula Download PDFInfo
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- CN101161683A CN101161683A CNA2006100479986A CN200610047998A CN101161683A CN 101161683 A CN101161683 A CN 101161683A CN A2006100479986 A CNA2006100479986 A CN A2006100479986A CN 200610047998 A CN200610047998 A CN 200610047998A CN 101161683 A CN101161683 A CN 101161683A
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Abstract
The present invention relates to a method for preparing a silane starch, especially to a method for preparing the silane starch using dry fluidization method. The invention provides a silane starch with a steady quality and a high efficiency. The invention using the following technical proposal that the feed proportioning is based on the mass of the starch, wherein other raw materials contain from 1.0 percent to 12.0 percent by weight of dimethyldichlorosilane or hexamethyldisiloxane to the mass of the starch, from 0.5 percent to 10.0 percent by weight of methanol to the mass of the starch, and from 5.0 percent to 20.0 percent by weight of water to the mass of the starch.
Description
Technical field:
The present invention relates to a kind of preparation method of silicane fecula, particularly adopt fluidization dried preparation silicane fecula.
Background technology:
Starch is a kind of renewable resources of cheapness, and starch is after modification, and its performance has bigger improvement, can enlarge the Application Areas of starch.The history in existing more than 100 year of treated starch research abroad, the treated starch of Development and Production has over thousands of kind of different varieties, but relevant silicane fecula does not appear in the newspapers.At present, the method for preparing treated starch has wet method, semidrying and dry method, and wherein dry method mainly refers to mix dry method.The advantage of wet method is the reaction conditions gentleness, and production unit is simple, and starch conversion is even, steady quality, but this method has a large amount of discharge of wastewater, and the aftertreatment expense is big; Dry method (mixing) advantage is a three-waste free discharge, the reaction efficiency height, but adopt the production method of spraying, properties-correcting agent is inhomogeneous with the starch contact, therefore, unstable product quality.
Summary of the invention:
The present invention is exactly at the problems referred to above, and a kind of silicane fecula a kind of constant product quality, that production efficiency is high is provided.
The present invention adopts following technical scheme, and proportioning raw materials is based on starch quality, and all the other raw materials according to the per-cent with respect to starch quality are: dichlorodimethylsilane or hexamethyldisiloxane 1.0～12.0%, methyl alcohol 0.5～10.0%, water 5.0～20.0%.
Starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, be after 100～130 ℃ of nitrogen purge 0.5～1 minute with temperature again, methyl alcohol, water are delivered to mixing tank, and making it after gasifying to be mixed with nitrogen enters fixed bed or fluidized-bed contacts with starch; After first alcohol and water to be gasified contacts 1～5 minute with starch, send into the dichlorodimethylsilane or the hexamethyldisiloxane of gasification again and reacted 2～40 minutes.With normal temperature nitrogen fluidisation 2～5 minutes, when treating that the starch temperature is reduced to 20～30 ℃, begin the silicane fecula humidification near the ative starch water content.
Dichlorodimethylsilane or hexamethyldisiloxane also can be octamethyltrisiloxane, decamethyl tetrasiloxane, hexamethyl cyclotrisiloxane, octamethylcyclotetrasiloxane, methyltrimethoxy silane, vinyl Ethoxysilane, four butoxy silanes.
Wherein wet concentration is with deionized water, distilled water or tap water; Starch can be the mixture of yam starch, sweet potato starch, tapioca (flour), W-Gum, pea starch, green starch and broad bean starch and above-mentioned starch.
The beneficial effect of the invention:
1, constant product quality:
Because the introducing of silane strengthens the starch hydrophobicity, gelatinization point improves, lipophilicity and dispersed obvious raising the in organic phase; Properties-correcting agent is fully contacted with starch, improved the stability of quality product.
2, production efficiency height:
Because adopting fluidized-bed is the starch conversion reactor, the product modification is even, and the reaction times is short, and the production efficiency height, and energy consumption is low.
Embodiment:
Embodiment 1:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 130 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the dichlorodimethylsilane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.Methyl alcohol to be gasified is delivered to mixing tank with volume pump with dichlorodimethylsilane with after water vapor contacts 2 minutes with starch, makes it gasification, and carries the dichlorodimethylsilane and the starch reaction of whole formula ratios in 20 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Embodiment 2:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 120 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the dichlorodimethylsilane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.First alcohol and water to be gasified begins with volume pump dichlorodimethylsilane to be delivered to mixing tank after contacting 2 minutes with starch, makes it gasification, and carries the dichlorodimethylsilane and the starch reaction of whole formula ratios in 30 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Embodiment 3:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 110 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the dichlorodimethylsilane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.First alcohol and water to be gasified begins with volume pump dichlorodimethylsilane to be delivered to mixing tank after contacting 2 minutes with starch, makes it gasification, and carries the dichlorodimethylsilane and the starch reaction of whole formula ratios in 40 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Embodiment 4:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 120 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the hexamethyldisiloxane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.First alcohol and water to be gasified begins with volume pump hexamethyldisiloxane to be delivered to mixing tank after contacting 2 minutes with starch, makes it gasification, and carries the hexamethyldisiloxane and the starch reaction of whole formula ratios in 30 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Embodiment 5:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 120 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the hexamethyldisiloxane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.First alcohol and water to be gasified begins with volume pump hexamethyldisiloxane to be delivered to mixing tank after contacting 2 minutes with starch, makes it gasification, and carries the hexamethyldisiloxane and the starch reaction of whole formula ratios in 30 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Embodiment 6:
Proportioning raw materials is based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality:
The preparation method is as follows:
A certain amount of starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, switching temperature is after 120 ℃ of nitrogen are made carrier gas or fluidizing agent and purged 0.5～1 minute, with volume pump a certain amount of methyl alcohol, water are delivered to mixing tank respectively, making it after gasifying to be mixed with nitrogen enters fluidized-bed and contacts with starch, and wherein the hexamethyldisiloxane reaction that necessarily is retained to whole formula ratios of the transfer rate of first alcohol and water finishes.First alcohol and water to be gasified begins with volume pump hexamethyldisiloxane to be delivered to mixing tank after contacting 2 minutes with starch, makes it gasification, and carries the hexamethyldisiloxane and the starch reaction of whole formula ratios in 30 minutes.After reaction finishes, use normal temperature nitrogen fluidisation 2 minutes, when treating that the starch temperature is reduced to 30 ℃, begin the silicane fecula humidification extremely near the ative starch water content.
Claims (7)
1. the preparation method of a silicane fecula, it is characterized in that proportioning raw materials is based on starch quality, all the other raw materials according to the per-cent with respect to starch quality are: dichlorodimethylsilane or hexamethyldisiloxane 1.0～12.0%, methyl alcohol 0.5～10.0%, water 5.0～20.0%.
Starch is put into fluidized-bed, do drying medium or fluidizing medium with starch drying 5～20 minutes with 80～110 ℃ of air, after treating that the starch water content is reduced to below 5%, be after 100～130 ℃ of nitrogen purge 0.5～1 minute with temperature again, methyl alcohol, water are delivered to mixing tank, and making it after gasifying to be mixed with nitrogen enters fixed bed or fluidized-bed contacts with starch; After first alcohol and water to be gasified contacts 1～5 minute with starch, send into the dichlorodimethylsilane or the hexamethyldisiloxane of gasification again and reacted 2～40 minutes.With normal temperature nitrogen fluidisation 2～5 minutes, when treating that the starch temperature is reduced to 20～30 ℃, begin the silicane fecula humidification near the ative starch water content.
2. the preparation method of a kind of silicane fecula according to claim 1 is characterized in that proportioning raw materials based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality: dichlorodimethylsilane 4.0%, methyl alcohol 4.0%, water 5.0%.
3. the preparation method of a kind of silicane fecula according to claim 1 is characterized in that proportioning raw materials based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality: dichlorodimethylsilane 8.0%, methyl alcohol 6.0%, water 8.0%.
4. the preparation method of a kind of silicane fecula according to claim 1, it is characterized in that proportioning raw materials is based on starch quality, all the other raw materials are as follows according to the per-cent with respect to starch quality: dichlorodimethylsilane 12.0%, methyl alcohol 8.0%, water 10.0%.
5. the preparation method of a kind of silicane fecula according to claim 1 is characterized in that proportioning raw materials based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality: hexamethyldisiloxane 2.0%, methyl alcohol 3.0%, water 5.0%.
6. the preparation method of a kind of silicane fecula according to claim 1 is characterized in that proportioning raw materials based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality: hexamethyldisiloxane 4.0%, methyl alcohol 2.0%, water 5.0%.
7. the preparation method of a kind of silicane fecula according to claim 1 is characterized in that proportioning raw materials based on starch quality, and all the other raw materials are as follows according to the per-cent with respect to starch quality: hexamethyldisiloxane 6.0%, methyl alcohol 4.0%, water 6.0%.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100479986A CN100560604C (en) | 2006-10-12 | 2006-10-12 | A kind of preparation method of silicane fecula |
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| CNB2006100479986A CN100560604C (en) | 2006-10-12 | 2006-10-12 | A kind of preparation method of silicane fecula |
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| CN100560604C CN100560604C (en) | 2009-11-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193835A (en) * | 2014-08-15 | 2014-12-10 | 浙江蓝宇数码科技有限公司 | Cationic silanization starch as well as preparation method and application thereof |
| CN104419018A (en) * | 2013-08-30 | 2015-03-18 | 财团法人工业技术研究院 | modified starch composition, starch composite foaming material and preparation method thereof |
-
2006
- 2006-10-12 CN CNB2006100479986A patent/CN100560604C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104419018A (en) * | 2013-08-30 | 2015-03-18 | 财团法人工业技术研究院 | modified starch composition, starch composite foaming material and preparation method thereof |
| CN104419018B (en) * | 2013-08-30 | 2017-12-01 | 财团法人工业技术研究院 | modified starch composition, starch composite foaming material and preparation method thereof |
| US9850362B2 (en) | 2013-08-30 | 2017-12-26 | Industrial Technology Research Institute | Modified starch compositions, starch composite foam materials and method for preparing the starch composite foam material |
| CN104193835A (en) * | 2014-08-15 | 2014-12-10 | 浙江蓝宇数码科技有限公司 | Cationic silanization starch as well as preparation method and application thereof |
| CN104193835B (en) * | 2014-08-15 | 2016-10-05 | 浙江蓝宇数码科技有限公司 | A kind of cationic silane starch, Preparation method and use |
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| CN100560604C (en) | 2009-11-18 |
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Granted publication date: 20091118 Termination date: 20121012 |