CN104402490A - Preparation method of nano-scale microporous thermal insulation plate with good flexibility - Google Patents
Preparation method of nano-scale microporous thermal insulation plate with good flexibility Download PDFInfo
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- CN104402490A CN104402490A CN201410595412.4A CN201410595412A CN104402490A CN 104402490 A CN104402490 A CN 104402490A CN 201410595412 A CN201410595412 A CN 201410595412A CN 104402490 A CN104402490 A CN 104402490A
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Abstract
The invention provides a preparation method of a nano-scale microporous thermal insulation plate with good flexibility. The method relates to the field of nano-scale porous thermal insulation materials. The preparation method comprises the following steps: fiber is crushed by using a high-speed mixer; zirconium silicate powder and white carbon black are well mixed with crushed fiber, a bonding agent and a proper amount of a reagent used for adjusting humidity degree by using a blade-type high-speed mixer; humidity degree is adjusted, and the mixture is molded with a roller-pair rolling molding method; a drying condition is controlled, and the molded sample is dried; and vacuum packaging is carried out, such that the nano-scale microporous thermal insulation plate with good flexibility is obtained. The method provided by the invention has the following advantages: the preparation method is simple and feasible; production efficiency is higher than that with a traditional dry-pressing molding method; the flexibility of the prepared nano-scale microporous thermal insulation plate is comparable with that of a fiber mat; and the prepared nano-scale microporous thermal insulation plate has uniform pore structure, large size, and good thermal insulation performance.
Description
Technical field
The present invention relates to the preparation method of the good nanometer micropore thermal baffle of a kind of flexibility, belong to nanoporous lagging material field.
Technical background
Adopt good heat preserving and insulating material to be conducive to reducing product energy consumption in the industry, reduce production cost, reduce thermofin volume thus the volume of reduction installations and facilities, reach the effect of coordination attractive in appearance, there are very large economic results in society.At present, traditional lagging material is difficult to meet the requirements at the higher level that civil energy-efficient and military hardware etc. propose lagging material.
Nanometer micropore thermal baffle void content can reach 80% ~ 99.8%, its bore hole size is most at below 50nm, the relative movement of gas molecule is restricted, mutual collision is blocked, material internal just eliminates transmission of heat by convection, fundamentally cut off the heat trnasfer of gas molecule, thus the thermal conductivity lower than still air can have been obtained.But, there is a lot of defect in the microporous thermal insulation material self prepared as main raw material by nano silicon in the market: 1) in use procedure along with temperature is elevated to a certain degree, the transmission of material internal heat is that main to change thermal radiation into be main by thermal conduction, and it is almost transparent to the radiation wavelength of 3 ~ 8 μm, this severely limits its use as thermal insulation material.2) the microporous thermal insulation material use temperature prepared as main raw material by nano silicon is lower, and life-time service temperature is ~ 600 DEG C.3) nanometer micropore thermal baffle size is in the market less, and snappiness is very poor, which limits its use at some privileged sites, such as circular pipe, need the privileged sites such as corner of insulation.Therefore, carry out the research of resistance to high temperature, the nanoporous heat-insulation composite material that flexible, size is large and component Development Techniques thereof, civilian or military hardware all has important practical significance to ten.
Summary of the invention
In view of the shortcomings of nanometer micropore thermal baffle in the market, the preparation method of the nanometer micropore thermal baffle that the object of the present invention is to provide a kind of flexibility good, preparation method's simple possible, production efficiency is high, and the nanometer micropore thermal baffle snappiness prepared is good, pore structure is even, size is large, heat-proof quality is good.
The technical solution used in the present invention is:
A preparation method for the nanometer micropore thermal baffle that flexibility is good, the concrete technology step of described preparation method is:
A, first fiber utilization stirrer is crushed to 5 ~ 10mm, then the mixed powder of zirconium silicate powder and white carbon black is utilized the fiber Homogeneous phase mixing after stirrer and fragmentation, finally add the reagent that wet degree is done in bonding agent and appropriate adjustment, the mixture be uniformly mixed; In the mixture of zirconium silicate powder, white carbon black, fiber, the mass ratio of zirconium silicate powder and white carbon black is 1:0.5 ~ 1, and the mass ratio of the mixed powder of fiber and zirconium silicate powder, white carbon black is 1:4 ~ 9; The add-on of described bonding agent is 2.5 ~ 10 % of mixture quality of zirconium silicate powder, white carbon black, fiber, the add-on that wet degree reagent is done in described adjustment be zirconium silicate powder, white carbon black, fiber mixture quality 2.5 ~ 20%;
B, adopt pair roller roller-compaction mode shaping to the mixed uniformly mixture that step a obtains, cutting, dried moulded products carries out vacuum packaging, obtains nano porous high-efficiency heat insulation board.
A preparation method for the nanometer micropore thermal baffle that flexibility is good, the particle diameter of described zirconium silicate powder is 1 ~ 10 μm; The purity of described zirconium silicate powder is more than 99.5%.
A preparation method for the nanometer micropore thermal baffle that flexibility is good, the particle diameter of described white carbon black is 2 ~ 40nm; The purity of described white carbon black is more than 98%.
A preparation method for the nanometer micropore thermal baffle that flexibility is good, described fiber is one or both in glass fibre, high silica fiber.
A preparation method for the nanometer micropore thermal baffle that flexibility is good, described bonding agent is one or both in acrylic resin, silicon sol, water glass bonding agent.
A preparation method for the nanometer micropore thermal baffle that flexibility is good, the reagent that wet degree is done in described adjustment is the one in methyl aceto acetate, ethanol, glycerine.
The present invention selects zirconium silicate, white carbon black and staple fibre to prepare flexible good nanometer micropore thermal baffle as main raw material, and the flexibility of this sheet material can compare favourably with fibrefelt.Zirconium silicate is selected to have following two reasons as raw material: 1) zirconium silicate significantly can reduce the radiant heat transmission of material under high temperature inside; 2) with after white carbon black and fiber composite the life-time service temperature of thermal baffle is made to bring up to 1100 DEG C.The white carbon black main component that vapor phase process obtains is nano level silicon-dioxide, its accumulation can be leaned on to provide a large amount of nanoporouss, ensure that the heat-proof quality of this thermal insulation plate.Staple fibre can increase the intensity of sheet material in right amount, is mainly used for increasing the snappiness of nanometer micropore thermal baffle, the snappiness of thermal baffle can be reached the degree of fibrefelt.In addition, utilize pair roller roller-compaction, ensure the homogeneity of nanometer micropore thermal baffle thickness on the one hand, the dimensions length of thermal baffle can be made to reach several meters of even tens of rice on the one hand.
Preparation method's simple possible of the present invention, production efficiency is high, and the nanometer micropore thermal baffle good toughness prepared, pore structure is even, size is large, heat-proof quality is good.
Embodiment
In conjunction with the embodiment provided, the present invention is illustrated:
Embodiment 1
First 100g high silica fiber is crushed to 5 ~ 10mm in leaf formula homogenizer, then 200g zirconium silicate powder, 200g white carbon black are joined in stirrer, in the process of high-speed stirring, add 12.5g acrylic resin and 100g methyl aceto acetate respectively, be stirred to Homogeneous phase mixing; Pair roller roller-compaction is utilized to make it shaping; The thickness of the sample after shaping is 3mm; Control drying conditions, temperature controls at 100 DEG C, and dry final vacuum packaging, can obtain nanometer micropore thermal baffle.
Embodiment 2
First 100g glass fibre is crushed to 5 ~ 10mm in leaf formula homogenizer, then 600g zirconium silicate powder, 300g white carbon black is joined in stirrer, in the process of high-speed stirring, add 100g silicon sol and 200g ethanol respectively, be stirred to Homogeneous phase mixing; Pair roller roller-compaction is utilized to make it shaping; The thickness of the sample after shaping is 3mm; Control drying conditions, temperature controls at 100 DEG C, and dry final vacuum packaging, can obtain nanometer micropore thermal baffle.
Embodiment 3
First 100g high silica fiber is crushed to 5 ~ 10mm in leaf formula homogenizer, then 600g zirconium silicate powder, 300g white carbon black is joined in stirrer, in the process of high-speed stirring, add 25g water glass and 25g glycerine respectively, be stirred to Homogeneous phase mixing; Pair roller roller-compaction is utilized to make it shaping; The thickness of the sample after shaping is 3mm; Control drying conditions, temperature controls at 100 DEG C, and dry final vacuum packaging, can obtain nanometer micropore thermal baffle.
Embodiment 4
First 100g glass fibre is crushed to 5 ~ 10mm in leaf formula homogenizer, then 200g zirconium silicate powder, 200g white carbon black is joined in stirrer, in the process of high-speed stirring, add 50g silicon sol and 100g ethanol respectively, be stirred to Homogeneous phase mixing; Pair roller roller-compaction is utilized to make it shaping; The thickness of the sample after shaping is 3mm; Control drying conditions, temperature controls at 100 DEG C, and dry final vacuum packaging, can obtain nanometer micropore thermal baffle.
Claims (6)
1. a preparation method for the nanometer micropore thermal baffle that flexibility is good, is characterized in that: the concrete technology step of described preparation method is:
A, first fiber utilization stirrer is crushed to 5 ~ 10mm, then the mixed powder of zirconium silicate powder and white carbon black is utilized the fiber Homogeneous phase mixing after stirrer and fragmentation, finally add the reagent that wet degree is done in bonding agent and appropriate adjustment, obtain the mixture mixed; In the mixture of zirconium silicate powder, white carbon black, fiber, the mass ratio of zirconium silicate powder and white carbon black is 1:0.5 ~ 1, and the mass ratio of the mixed powder of fiber and zirconium silicate powder, white carbon black is 1:4 ~ 9; The add-on of described bonding agent is 2.5 ~ 10 % of mixture quality of zirconium silicate powder, white carbon black, fiber, the add-on that wet degree reagent is done in described adjustment be zirconium silicate powder, white carbon black, fiber mixture quality 2.5 ~ 20%;
B, adopt pair roller roller-compaction mode shaping to the mixed uniformly mixture that step a obtains, cutting, dried moulded products carries out vacuum packaging, obtains nano porous high-efficiency heat insulation board.
2. the preparation method of the nanometer micropore thermal baffle that a kind of flexibility as claimed in claim 1 is good, is characterized in that: the particle diameter of described zirconium silicate powder is 1 ~ 10 μm; The purity of described zirconium silicate powder is more than 99.5%.
3. the preparation method of the nanometer micropore thermal baffle that a kind of flexibility as claimed in claim 1 is good, is characterized in that: the particle diameter of described white carbon black is 2 ~ 40nm; The purity of described white carbon black is more than 98%.
4. the preparation method of the nanometer micropore thermal baffle that a kind of flexibility as claimed in claim 1 is good, is characterized in that: described fiber is one or both in glass fibre, high silica fiber.
5. the preparation method of the nanometer micropore thermal baffle that a kind of flexibility as claimed in claim 1 is good, is characterized in that: described bonding agent is one or both in acrylic resin, silicon sol, water glass bonding agent.
6. the preparation method of the nanometer micropore thermal baffle that a kind of flexibility as claimed in claim 1 is good, is characterized in that: the reagent that wet degree is done in described adjustment is the one in water, methyl aceto acetate, ethanol, glycerine.
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| CN201410595412.4A CN104402490A (en) | 2014-10-30 | 2014-10-30 | Preparation method of nano-scale microporous thermal insulation plate with good flexibility |
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| CN201410595412.4A CN104402490A (en) | 2014-10-30 | 2014-10-30 | Preparation method of nano-scale microporous thermal insulation plate with good flexibility |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383544A (en) * | 2018-04-11 | 2018-08-10 | 中山市海耐得电器科技有限公司 | Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance |
| CN109180142A (en) * | 2018-10-19 | 2019-01-11 | 胡红标 | Aerosil composite insulation material and preparation method thereof |
| CN110256035A (en) * | 2019-06-24 | 2019-09-20 | 广州晖能环保材料有限公司 | The preparation method and high-strength nano thermal insulation board of high-strength nano thermal insulation board |
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| US5872070A (en) * | 1997-01-03 | 1999-02-16 | Exxon Research And Engineering Company | Pyrolysis of ceramic precursors to nanoporous ceramics |
| CN101788096A (en) * | 2010-01-22 | 2010-07-28 | 刘礼龙 | Nano heat insulating blanket and production method thereof |
| CN102514293A (en) * | 2011-11-16 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of nano porous high-efficiency heat insulation board |
| CN102557710A (en) * | 2011-09-15 | 2012-07-11 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of corundum-mullite multiphase ceramic material with nano-pore structure |
| CN102838342A (en) * | 2012-09-27 | 2012-12-26 | 袁江涛 | Dry preparation method of high-temperature resistant nanometer micropore thermal insulation board |
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2014
- 2014-10-30 CN CN201410595412.4A patent/CN104402490A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872070A (en) * | 1997-01-03 | 1999-02-16 | Exxon Research And Engineering Company | Pyrolysis of ceramic precursors to nanoporous ceramics |
| CN101788096A (en) * | 2010-01-22 | 2010-07-28 | 刘礼龙 | Nano heat insulating blanket and production method thereof |
| CN102557710A (en) * | 2011-09-15 | 2012-07-11 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of corundum-mullite multiphase ceramic material with nano-pore structure |
| CN102514293A (en) * | 2011-11-16 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of nano porous high-efficiency heat insulation board |
| CN102838342A (en) * | 2012-09-27 | 2012-12-26 | 袁江涛 | Dry preparation method of high-temperature resistant nanometer micropore thermal insulation board |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383544A (en) * | 2018-04-11 | 2018-08-10 | 中山市海耐得电器科技有限公司 | Heat-barrier material composition, heat insulating mattress and preparation method thereof and cooking appliance |
| CN109180142A (en) * | 2018-10-19 | 2019-01-11 | 胡红标 | Aerosil composite insulation material and preparation method thereof |
| CN109180142B (en) * | 2018-10-19 | 2021-03-23 | 胡红标 | Silica aerogel composite heat-insulating material and preparation method thereof |
| CN110256035A (en) * | 2019-06-24 | 2019-09-20 | 广州晖能环保材料有限公司 | The preparation method and high-strength nano thermal insulation board of high-strength nano thermal insulation board |
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Application publication date: 20150311 |