CN106009027A - Konjac glucomannan porous heat-insulating material and preparation method thereof - Google Patents
Konjac glucomannan porous heat-insulating material and preparation method thereof Download PDFInfo
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- CN106009027A CN106009027A CN201610357651.5A CN201610357651A CN106009027A CN 106009027 A CN106009027 A CN 106009027A CN 201610357651 A CN201610357651 A CN 201610357651A CN 106009027 A CN106009027 A CN 106009027A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/02—Dextran; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/02—Dextran; Derivatives thereof
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Abstract
The invention relates to a konjac glucomannan porous heat-insulating material and a preparation method thereof. The preparation method for the konjac glucomannan porous heat-insulating material comprises the following steps: preparing a konjac glucomannan solution, swelling konjac glucomannan, preparing konjac glucomannan gel, and preparing the konjac glucomannan porous heat-insulating material. The konjac glucomannan porous heat-insulating material provided by the invention is a purely natural konjac glucomannan porous material; the konjac glucomannan is wide in source and high in yield, and has the characteristics of degradability, environment friendliness and the like; moreover, a material is easy to get and the cost is low. Other materials are not required to be mixed in the preparation of the porous heat-insulating material by utilizing the konjac glucomannan, so that process complexity is reduced, meanwhile, the cost is reduced, and the product performance reaches or is superior to that of other heat-insulating materials.
Description
Technical field
The present invention relates to a kind of heat insulating material formed and preparation method thereof, be specifically related to a kind of Rhizoma amorphophalli glucomannan porous heat insulating material formed and preparation method thereof.
Background technology
The heat insulating material formed raw material referring to constitute warming wadding material, often acts on clothing, bedding, sleeping bag etc. with the form of flocculus or wadding material, and the feature of its maximum is light and fluffy insulation.In the fibrous raw material of Novel heat-preservation wadding material, the most all contain hollow or high crimped polyester, acrylic staple fibre, superfine fibre through different production technologies make heat insulating material formed.Heat insulating material formed effect is that resisting cold is warming, and in various environment, human body passes through clothing, and bed pad, sleeping bag etc. carries out heat exchange with environment, thus arrives the Thermal comfort of human body.The most basic condition of thermal comfort is that the energy exchange between heat and the heat of the human body that scatters and disappears to environment maintaining the thermal balance of human body, i.e. human body self to produce reaches relative equilibrium.Heat insulating material formed effect makes sinking path be strengthened or weaken exactly, so that energy exchange reaches relative equilibrium, makes human body produce snugness sense.Particularly in low temperature environment, scattering and disappearing of human heat can be reduced to a certain extent.Common heat insulating material formed have that cost is high, weight greatly, not environmentally, the shortcoming such as complex manufacturing technology.
The patent of invention " a kind of eider down composite heat insulation material " (applying date: 2015.07.13) of Application No. 201510410336.X is prepared for a kind of eider down composite heat insulation material, the garment dimension stability that this invention uses eider down composite heat insulation material to manufacture is high, and resist wind, water very competent, use the processing mode starched the compound processing mode of some lamination or use lamination to be combined, thus the overall performance of base material is substantially improved.But, this composite heat insulation material uses the materials such as eider down, and relatively costly, product price is relatively expensive.
The patent of invention of Application No. 201210578401.6 " manufactures the heat insulating material formed method of kapok and kapok is heat insulating material formed " (applying date: 2012.12.27) and describes and a kind of manufacture the heat insulating material formed method of kapok and the kapok that is produced from is heat insulating material formed.This invention overcomes during kapok processes and easily flies upward, becomes net poor, the problem of web quality instability, and can provide that to have soft comfortable sense, high-efficiency thermal protection kapok heat insulating material formed.But, this heat insulating material formed not All Pure Nature kapok material, also it is mixed with the other materials such as chemical fibre, environmental protection decreases with security performance.
The patent of invention " a kind of green totally degradable warming material and production method thereof " (applying date: 2009.01.12) of Application No. 200910045193.1 describes a kind of green totally degradable warming material and production method thereof, the heat insulating material formed raw materials used Wholly-degradable of this invention, whole production process is pollution-free, product has good intensity, the multiple efficacies such as fluffy, warming and antibacterial, belongs to environmental type product.But, its complex manufacturing technology, relatively costly, it is difficult to promote.
The nanostructured that porous material is very thin can effectively limit the propagation of local thermal excitation, its solid state heat conductance 2-3 order of magnitude lower than corresponding vitreous material.Nanometer micropore inhibits the gas molecule contribution to conduction of heat.Although tradition is heat insulating material formed still occupies main market, but all there is the problem such as shortage of resources, environmental pollution in most material.Along with the development of various new and high technologies and applying in textile industry is promoted day by day, make heat insulating material formed day by day to develop towards ultralight, environmental protection and biodegradable direction.In addition to basic mechanical property, also there is some specific, excellent physically or chemically performance, as having some electric property, magnetic performance, thermal property, the elasticity of compression, permeability and water vapour permeability etc., to reach multi-functional purpose, more conform to consumer's demand to heat insulating material formed each side.Along with the continuous enhancing of people's environmental consciousness, the material of environmental protection also provides broader space for heat insulating material formed development.The development in recent years of super insulation material the most gradually starts to replace traditional material, particularly the application in heat insulating material formed.The heat insulating material formed infrared emanation that can effectively stop body temp of Rhizoma amorphophalli glucomannan porous, becomes a kind of preferably insulation material, and meanwhile, the high intensity of nanostructured is that material is unlikely to deform, and durability degree is higher；Extremely low density (air content is up to 98%), alleviates heat insulating material formed weight greatly.Therefore, a kind of ultralight, environmental protection, biodegradable and combine the multi-functional warm material of electromagnetic performance and breathable moisture permeability and can gradually replace traditional heat insulating material formed.
Summary of the invention
It is an object of the invention to provide a kind of and existing heat insulating material formed different Rhizoma amorphophalli glucomannan porous heat insulating material formed and preparation method thereof.
The Rhizoma amorphophalli glucomannan porous of the present invention is heat insulating material formed for pure natural Rhizoma amorphophalli glucomannan porous material, utilize its high porosity, thermal resistivity and mechanical strength, extremely low density, and the safety of Rhizoma amorphophalli glucomannan pure natural, prepare good warmth retention effect, safety height, the simple environment-friendly degradable of technique and high intensity ultralight heat insulating material formed.
The preparation method that the present invention a kind of Rhizoma amorphophalli glucomannan porous is heat insulating material formed, it is characterised in that preparation method is as follows:
(1) preparation of konjak portuguese gansu polyose sugar juice: prepare by weight, takes konjaku powder 1 ~ 2 part, is dissolved in the ultra-pure water of 98 ~ 99 parts, stirs evenly, and prepares konjak portuguese gansu polyose sugar juice；
(2) Rhizoma amorphophalli glucomannan is swelling: takes the konjak portuguese gansu polyose sugar juice that step (1) obtains and is placed in the thermostat water bath of 80 ~ 90 DEG C, stirs 50 ~ 70 minutes with magnetic stirring apparatus 300rpm；
(3) preparation of konjak portuguese gansu polyose gel: take that step (2) obtains swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 12 ~ 24 hours, prepare konjak portuguese gansu polyose gel；
(4) preparation that Rhizoma amorphophalli glucomannan porous is heat insulating material formed: take the konjak portuguese gansu polyose gel that step (3) prepares, uses supercritical carbon dioxide dried, makes Rhizoma amorphophalli glucomannan porous heat insulating material formed；Described supercritical carbon dioxide is dried: use Thar SFE-500 supercritical extraction equipment, first pressure is adjusted to 100bar, temperature 40 DEG C, is dried 1.5 hours, CO2Dynamic flow conditions be 40g/min；Then, pressure is increased to 200bar, baking temperature 40 DEG C, be dried 1.5 hours；Last drying under reduced pressure 12 hours, i.e. pressure is gradually lowered to 10bar from 200bar.
The present invention also protects the Rhizoma amorphophalli glucomannan porous prepared by said method heat insulating material formed.
The invention have the advantages that
First, Rhizoma amorphophalli glucomannan source is wide, yield is big, and Rhizoma amorphophalli is distributed mainly on the ground such as Southeast Asia, Africa；The states such as China, Japan, Burma, Vietnam, Indonesia.In China, it is mainly distributed on cloud, expensive, river, Southern Shaanxi and West of Hubei Province, the abundantest with the Amorphophallus Resources in mountain area around the Sichuan Basin.So being readily available and with low cost.Second, Rhizoma amorphophalli glucomannan is prepared porous material and be need not mix other materials, decreases complexity and the cost of technique.3rd, Rhizoma amorphophalli glucomannan is a kind of natural biological polyoses, has the good characteristic such as degradable, environmental protection.4th, the performance of Rhizoma amorphophalli glucomannan porous material can reach other heat insulating material formed peer-levels.Therefore, it can prediction, prepare porous material with Rhizoma amorphophalli glucomannan for raw material and obtaining premium quality product at the same time it can also be solve the shortcomings such as the high cost of other materials, difficult degradation, poor stability.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further elaborated.
In order to fully open Rhizoma amorphophalli glucomannan porous of the present invention is heat insulating material formed and preparation method thereof, below in conjunction with embodiment, the present invention is described in further detail.
The preparation method that embodiment 1, a kind of Rhizoma amorphophalli glucomannan porous are heat insulating material formed, comprises the following steps:
(1) preparation of konjak portuguese gansu polyose sugar juice: prepare by weight, takes konjaku powder 1 part, is dissolved in the ultra-pure water of 99 parts, stirs evenly, and prepares konjak portuguese gansu polyose sugar juice；
(2) Rhizoma amorphophalli glucomannan is swelling: takes the konjak portuguese gansu polyose sugar juice that step (1) obtains and is placed in the thermostat water bath of 80 DEG C, stirs 70 minutes with magnetic stirring apparatus 300rpm；
(3) preparation of konjak portuguese gansu polyose gel: take that step (2) obtains swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 12 hours, prepare konjak portuguese gansu polyose gel；
(4) preparation that Rhizoma amorphophalli glucomannan porous is heat insulating material formed: take the konjak portuguese gansu polyose gel that step (3) prepares, uses supercritical carbon dioxide dried, makes Rhizoma amorphophalli glucomannan porous heat insulating material formed.
The preparation method that embodiment 2, a kind of Rhizoma amorphophalli glucomannan porous are heat insulating material formed, comprises the following steps:
(1) preparation of konjak portuguese gansu polyose sugar juice: prepare by weight, takes konjaku powder 2 parts, is dissolved in the ultra-pure water of 98 parts, stirs evenly, and prepares konjak portuguese gansu polyose sugar juice；
(2) Rhizoma amorphophalli glucomannan is swelling: takes the konjak portuguese gansu polyose sugar juice that step (1) obtains and is placed in the thermostat water bath of 90 DEG C, and with magnetic stirring apparatus, 300rpm stirs 50 minutes；
(3) preparation of konjak portuguese gansu polyose gel: take that step (2) obtains swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 24 hours, prepare konjak portuguese gansu polyose gel；
(4) preparation that Rhizoma amorphophalli glucomannan porous is heat insulating material formed: take the konjak portuguese gansu polyose gel that step (3) prepares, uses supercritical carbon dioxide to be dried, makes Rhizoma amorphophalli glucomannan porous heat insulating material formed.
The preparation method that embodiment 3, a kind of Rhizoma amorphophalli glucomannan porous are heat insulating material formed, comprises the following steps:
(1) preparation of konjak portuguese gansu polyose sugar juice: prepare by weight, takes konjaku powder 1.5 parts, is dissolved in the ultra-pure water of 98.5 parts, stirs evenly, and prepares konjak portuguese gansu polyose sugar juice；
(2) Rhizoma amorphophalli glucomannan is swelling: takes the konjak portuguese gansu polyose sugar juice that step (1) obtains and is placed in the thermostat water bath of 85 DEG C, stirs 60 minutes with magnetic stirring apparatus 300rpm；
(3) preparation of konjak portuguese gansu polyose gel: take that step (2) obtains swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 18 hours, prepare konjak portuguese gansu polyose gel；
(4) preparation that Rhizoma amorphophalli glucomannan porous is heat insulating material formed: take the prepared konjak portuguese gansu polyose gel of step (3) and use supercritical carbon dioxide to be dried, make Rhizoma amorphophalli glucomannan porous heat insulating material formed.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention.
Claims (5)
1. the preparation method that a Rhizoma amorphophalli glucomannan porous is heat insulating material formed, it is characterised in that preparation method is as follows:
(1) preparation of konjak portuguese gansu polyose sugar juice: prepare by weight, takes konjaku powder 1 ~ 2 part, is dissolved in the ultra-pure water of 98 ~ 99 parts, stirs evenly, and prepares konjak portuguese gansu polyose sugar juice；
(2) Rhizoma amorphophalli glucomannan is swelling: takes the konjak portuguese gansu polyose sugar juice that step (1) obtains and is placed in the thermostat water bath of 80 ~ 90 DEG C, stirs 50 ~ 70 minutes with magnetic stirring apparatus 300rpm；
(3) preparation of konjak portuguese gansu polyose gel: take that step (2) obtains swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 12 ~ 24 hours, prepare konjak portuguese gansu polyose gel；
(4) preparation that Rhizoma amorphophalli glucomannan porous is heat insulating material formed: take the konjak portuguese gansu polyose gel that step (3) prepares, uses supercritical carbon dioxide dried, makes Rhizoma amorphophalli glucomannan porous heat insulating material formed；Described supercritical carbon dioxide is dried: use Thar SFE-500 supercritical extraction equipment, first pressure is adjusted to 100bar, temperature 40 DEG C, is dried 1.5 hours, and the dynamic flow conditions of CO2 is 40g/min；Then, pressure is increased to 200bar, baking temperature 40 DEG C, be dried 1.5 hours；Last drying under reduced pressure 12 hours, i.e. pressure is gradually lowered to 10bar from 200bar.
The preparation method that a kind of Rhizoma amorphophalli glucomannan porous the most according to claim 1 is heat insulating material formed, it is characterized in that the preparation of described konjak portuguese gansu polyose sugar juice: prepare by weight, take konjaku powder 1 part, be dissolved in the ultra-pure water of 99 parts, stir evenly, prepare konjak portuguese gansu polyose sugar juice.
The preparation method that a kind of Rhizoma amorphophalli glucomannan porous the most according to claim 1 is heat insulating material formed, it is characterized in that the swelling of described Rhizoma amorphophalli glucomannan: take in the thermostat water bath that konjak portuguese gansu polyose sugar juice is placed in 80 DEG C, stir 70 minutes with magnetic stirring apparatus 300rpm.
The preparation method that a kind of Rhizoma amorphophalli glucomannan porous the most according to claim 1 is heat insulating material formed, it is characterized in that the preparation of described konjak portuguese gansu polyose gel: take swelling after konjak portuguese gansu polyose sugar juice be placed in room temperature lower 24 hours, then, by soaked in absolute ethyl alcohol 12 hours, prepare konjak portuguese gansu polyose gel.
5. the Rhizoma amorphophalli glucomannan porous prepared by the either method described in claim 1-4 is heat insulating material formed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919897A (en) * | 2006-08-31 | 2007-02-28 | 上海交通大学 | Gelation method of low concentration konjak glucomannan at low-temperature basic condition |
| CN101423613A (en) * | 2008-11-28 | 2009-05-06 | 浙江师范大学 | Method for preparing glucomanna sponge through environment-friendly method |
| CN103418020A (en) * | 2013-08-31 | 2013-12-04 | 西南大学 | Devilstongue gulcomannan hemostatic sponge and preparation method thereof |
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2016
- 2016-05-26 CN CN201610357651.5A patent/CN106009027A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919897A (en) * | 2006-08-31 | 2007-02-28 | 上海交通大学 | Gelation method of low concentration konjak glucomannan at low-temperature basic condition |
| CN101423613A (en) * | 2008-11-28 | 2009-05-06 | 浙江师范大学 | Method for preparing glucomanna sponge through environment-friendly method |
| CN103418020A (en) * | 2013-08-31 | 2013-12-04 | 西南大学 | Devilstongue gulcomannan hemostatic sponge and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| CHEN HAN ET AL.: ""Structure and Potential Application of Konjac Glucomannan Nano Microfibril Aerogel"", 《结构化学》 * |
| JING LI ET AL.: ""Facile preparation of clay reinforced konjac glucomannan aerogels"", 《RSC ADVANCES》 * |
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