CN108822521A - A kind of composite heat insulatant thermal insulation material and preparation method thereof - Google Patents
A kind of composite heat insulatant thermal insulation material and preparation method thereof Download PDFInfo
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- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
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Abstract
The present invention provides a kind of composite heat insulatant thermal insulation materials and preparation method thereof.It is made of following steps：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；Phosphorus oxychloride and n-hexane are stirred into obtain solution B, dripped in solution A, after stand, rotate to obtain solution C；Solution C is heated up, the lower polyether polyol that instills is stirred and reacts；Diethanol amine is added to stir；Triethanolamine, dibutyltin dilaurate, triethylenediamine, foam stabiliser and distilled water is added to mix to obtain component D；Glass bead is added to stir to obtain component E；Component F is mixed to obtain in polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates；Component E and component F is mixed, is injected in mold, molding curing；Die sinking takes out sample to obtain the final product.Composite heat insulatant thermal insulation material thermal coefficient of the invention is low, has extraordinary heat insulation and preservation effect, mechanical property is good, while having good flame retardant effect.
Description
Technical field
The present invention relates to field of heat insulating materials, and in particular to a kind of composite heat insulatant thermal insulation material and preparation method thereof.
Background technique
With the sharp increase of world population, energy shortage problem should not be underestimated, energy saving, develop a circular economy gradually
It becomes more and more important.Currently, the whole world is more than three one-tenth of energy consumption in building field, moreover, with Process of Urbanization Construction
The continuous improvement of quickening and people to living condition demand steadily, demand of the building field to the energy can be higher and higher.It is long this with
Past, the sustainable development of world economy will receive keeping in check for energy problem.Therefore, it is very urgent to develop energy-saving building technology.And
The main method of building energy conservation is exactly the outer enclosed structure by improving building, and for exterior wall, traditional is single with heavy
Material increases the method for thickness, and to reach the way of heat preservation, environmental protection and energy-efficient demand is not achieved in oneself, thin in frame structure
Heat preserving and insulating material interlayer is used in wall as wall more and more becomes the mainstream of current building energy conservation exterior wall.Therefore it researchs and develops
The heat-insulating heat-preserving material of superior performance has wide meaning and market application prospect.
Summary of the invention
Technical problems to be solved：The object of the present invention is to provide a kind of composite heat insulatant thermal insulation materials, and thermal coefficient is low, tool
There is extraordinary heat insulation and preservation effect, mechanical property is good, while having good flame retardant effect.
Technical solution：A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：Polyimides airsetting
5-8 parts of glue, 10-15 parts of hexadecanol, 2-5 parts of glass bead, 10-15 parts of glass fiber reinforcement graphene aerogel, polyethylene glycol-
800 30-40 parts, 4-8 parts of lauric acid, 15-18 parts of phosphorus oxychloride, 1-2 parts of foam stabiliser, 100-120 parts of polyether polyol,
25-35 parts of diethanol amine, 0.5-1 parts of triethanolamine, 0.6-1 parts of dibutyltin dilaurate, triethylenediamine 0.5-0.8
Part, 150-180 parts of polyisocyanates, 100-130 parts of tetrahydrofuran, 50-70 parts of n-hexane, 2-5 parts of distilled water.
Further, a kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：Polyamides is sub-
7 parts of amine aeroge, 13 parts of hexadecanol, 4 parts of glass bead, 13 parts of glass fiber reinforcement graphene aerogel, polyethylene glycol-8 00
35 parts, 6 parts of lauric acid, 17 parts of phosphorus oxychloride, 1.5 parts of foam stabiliser, 110 parts of polyether polyol, 30 parts of diethanol amine, three second
0.8 part of hydramine, 0.8 part of dibutyltin dilaurate, 0.7 part of triethylenediamine, 165 parts of polyisocyanates, tetrahydrofuran
115 parts, 60 parts of n-hexane, 4 parts of distilled water.
Further, the preparation method of the glass fiber reinforcement graphene aerogel is：
（1）Glass fibre ethyl alcohol, deionized water are successively flowed back cleaning 6-8 h, and dry 12 h at 120 DEG C are put into carding machine
It is middle to carry out fluffy processing；
（2）The graphene oxide water solution of 6 mL 5mg/mL and 60 mg vitamin Cs are uniformly mixed, salable mold is poured into
In, by step（1）Fiber tiles according to die size by different level in mold, guarantees that fibrous layer is evenly distributed；
（3）Mold is sealed, is placed into after heating 4-5min in 95 DEG C of baking oven and takes out, cooled to room temperature；
（4）By in mold there are liquid pouring come out, deionized water is added thereto, pours out deionized water after 10min, then
It is added after ethyl alcohol impregnates 2h and pours out, add ethyl alcohol and impregnated and poured out afterwards for 24 hours；
（5）It is put into 65 DEG C of air dry oven and is dried for 24 hours to obtain the final product.
Further, the foam stabiliser is silicone oil or sodium n-alkylbenzenesulfonate.
Further, the hydroxyl value of the polyethers of the polyether polyol is 350.
Further, the isocyanate group content of the polyisocyanates is 31.0.
The preparation method of above-mentioned composite heat insulatant thermal insulation material includes the following steps：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1-1.5h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90-100 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react
1.5-2h；
4th step：Diethanol amine is added and stirs 5-10min；
5th step：It is mixed that triethanolamine, dibutyltin dilaurate, triethylenediamine, foam stabiliser and distilled water is added
It closes dispersion 10-20min and obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 10-20min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 30-40s is rapidly injected in mold, is molded rapidly, is put into
100-120 DEG C of baking oven cures 4-6h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Beneficial effect：
1. the mechanical strength of material can be greatly improved using the modified graphene aerogel of glass fibre.
2. polyimide aerogels, glass bead and glass fiber reinforcement graphene aerogel have extraordinary fire-retardant
Heat-proof quality can be cooperateed with mutually after compound, achieve the effect that 1+1+1 > 3.
3. hexadecanol, polyethylene glycol-8 00 and lauric acid are grafted on polyether polyols ol skeleton, it is made to play phase transformation storage
The effect of energy.
4. the thermal coefficient of composite heat insulatant thermal insulation material of the present invention down to 0.0197W/ (mK), have it is extraordinary every
Hot heat insulation effect, compressive strength are up to 0.52MPa, and oxygen index (OI) has also reached 34.7, have good flame retardant effect.
Specific embodiment
Embodiment 1
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：5 parts of polyimide aerogels, hexadecanol
10 parts, 2 parts of glass bead, 10 parts of glass fiber reinforcement graphene aerogel, 00 30 parts of polyethylene glycol-8,4 parts of lauric acid, three
15 parts of chlorethoxyfos, 1 part of silicone oil, 100 parts of polyether polyol, 25 parts of diethanol amine, 0.5 part of triethanolamine, dibutyltindilaurylmercaptide osmanthus
0.6 part of acid esters, 0.5 part of triethylenediamine, 150 parts of polyisocyanates, 100 parts of tetrahydrofuran, 50 parts of n-hexane, distilled water 2
Part.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 1.5h；
4th step：Diethanol amine is added and stirs 5min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
10min obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 10min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 30s is rapidly injected in mold, is molded rapidly, is put into 100 DEG C
Baking oven cure 4h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Embodiment 2
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：7 parts of polyimide aerogels, hexadecanol
13 parts, 4 parts of glass bead, 13 parts of glass fiber reinforcement graphene aerogel, 00 35 parts of polyethylene glycol-8,6 parts of lauric acid, three
17 parts of chlorethoxyfos, 1.5 parts of silicone oil, 110 parts of polyether polyol, 30 parts of diethanol amine, 0.8 part of triethanolamine, dibutyltindilaurylmercaptide
0.8 part of cinnamic acid ester, 0.7 part of triethylenediamine, 165 parts of polyisocyanates, 115 parts of tetrahydrofuran, 60 parts of n-hexane, distilled water
4 parts.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1.3h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 95 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 2h；The
Four steps：Diethanol amine is added and stirs 8min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
15min obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 15min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 35s is rapidly injected in mold, is molded rapidly, is put into 110 DEG C
Baking oven cure 5h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Embodiment 3
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：8 parts of polyimide aerogels, hexadecanol
15 parts, 5 parts of glass bead, 15 parts of glass fiber reinforcement graphene aerogel, 00 40 parts of polyethylene glycol-8,8 parts of lauric acid, three
18 parts of chlorethoxyfos, 2 parts of silicone oil, 120 parts of polyether polyol, 35 parts of diethanol amine, 1 part of triethanolamine, dibutyltindilaurylmercaptide cinnamic acid
1 part of ester, 0.8 part of triethylenediamine, 180 parts of polyisocyanates, 130 parts of tetrahydrofuran, 70 parts of n-hexane, 5 parts of distilled water.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1.5h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 100 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 2h；
4th step：Diethanol amine is added and stirs 10min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
20min obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 20min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 40s is rapidly injected in mold, is molded rapidly, is put into 120 DEG C
Baking oven cure 6h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Comparative example 1
The present embodiment is the difference from embodiment 1 is that replace hexadecanol with polyethylene glycol-8 00.Specifically：
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：5 parts of polyimide aerogels, vitreous are micro-
2 parts of pearl, 10 parts of glass fiber reinforcement graphene aerogel, 00 40 parts of polyethylene glycol-8,4 parts of lauric acid, 15 parts of phosphorus oxychloride,
1 part of silicone oil, 100 parts of polyether polyol, 25 parts of diethanol amine, 0.5 part of triethanolamine, 0.6 part of dibutyltin dilaurate, three
0.5 part of ethylene diamine, 150 parts of polyisocyanates, 100 parts of tetrahydrofuran, 50 parts of n-hexane, 2 parts of distilled water.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00 and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 1.5h；
4th step：Diethanol amine is added and stirs 5min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
10min obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 10min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 30s is rapidly injected in mold, is molded rapidly, is put into 100 DEG C
Baking oven cure 4h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Comparative example 2
The present embodiment is the difference from embodiment 1 is that replace polyimide aerogels with glass fiber reinforcement graphene aerogel.
Specifically：
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：10 parts of hexadecanol, 2 parts of glass bead, glass
15 parts of glass fiber reinforced graphite alkene aeroge, 00 30 parts of polyethylene glycol-8,4 parts of lauric acid, 15 parts of phosphorus oxychloride, 1 part of silicone oil,
100 parts of polyether polyol, 25 parts of diethanol amine, 0.5 part of triethanolamine, 0.6 part of dibutyltin dilaurate, triethylene two
0.5 part of amine, 150 parts of polyisocyanates, 100 parts of tetrahydrofuran, 50 parts of n-hexane, 2 parts of distilled water.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 1.5h；
4th step：Diethanol amine is added and stirs 5min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
10min obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 10min obtain component E；
7th step：Glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, component is stirred evenly to obtain at 30 DEG C
F；
8th step：Component E and component F is mixed, high-speed stirred 30s is rapidly injected in mold, is molded rapidly, is put into 100 DEG C
Baking oven cure 4h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Comparative example 3
The present embodiment is not the difference from embodiment 1 is that contain glass bead.Specifically：
A kind of composite heat insulatant thermal insulation material is prepared by following component with parts by weight：5 parts of polyimide aerogels, hexadecanol
10 parts, 10 parts of glass fiber reinforcement graphene aerogel, 00 30 parts of polyethylene glycol-8,4 parts of lauric acid, 15 parts of phosphorus oxychloride, silicon
Oily 1 part, 100 parts of polyether polyol, 25 parts of diethanol amine, 0.5 part of triethanolamine, 0.6 part of dibutyltin dilaurate, Sanya
0.5 part of ethyldiamine, 150 parts of polyisocyanates, 100 parts of tetrahydrofuran, 50 parts of n-hexane, 2 parts of distilled water.
The preparation method of above-mentioned composite heat insulatant thermal insulation material is：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react 1.5h；
4th step：Diethanol amine is added and stirs 5min；
5th step：Triethanolamine, dibutyltin dilaurate, triethylenediamine, silicone oil and distilled water mixing dispersion is added
10min obtains component D；
6th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
7th step：Component D and component F is mixed, high-speed stirred 30s is rapidly injected in mold, is molded rapidly, is put into 100 DEG C
Baking oven cure 4h；
8th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
Thermal coefficient is according to GB/T339-1982《Plastics thermal coefficient test method protects flat plate heat method》It is measured.
Compressive strength is according to GB/T8813-2008《The measurement of rigid foam compression performance》It is measured.
Oxygen index (OI) is according to GB/T2406.1-2008《Plastics measure burning behavior part 1 with oxygen index method：Directive/guide》
It is measured.
The partial properties index of 1 composite heat insulatant thermal insulation material of table
The partial properties index of composite heat insulatant thermal insulation material of the present invention is seen the above table, it will be seen that its thermal coefficient down to
0.0197W/ (mK) has extraordinary heat insulation and preservation effect, and compressive strength is up to 0.52MPa, and oxygen index (OI) also reaches
34.7, there is good flame retardant effect.
Claims (7)
1. a kind of composite heat insulatant thermal insulation material, it is characterised in that：It is prepared by following component with parts by weight：Polyimides gas
5-8 parts of gel, 10-15 parts of hexadecanol, 2-5 parts of glass bead, 10-15 parts of glass fiber reinforcement graphene aerogel, poly- second two
- 800 30-40 parts of alcohol, 4-8 parts of lauric acid, 15-18 parts of phosphorus oxychloride, 1-2 parts of foam stabiliser, polyether polyol 100-120
Part, 25-35 parts of diethanol amine, 0.5-1 parts of triethanolamine, 0.6-1 parts of dibutyltin dilaurate, triethylenediamine 0.5-
0.8 part, 150-180 parts of polyisocyanates, 100-130 parts of tetrahydrofuran, 50-70 parts of n-hexane, 2-5 parts of distilled water.
2. a kind of composite heat insulatant thermal insulation material according to claim 1, it is characterised in that：By following component with parts by weight
It is prepared：7 parts of polyimide aerogels, 13 parts of hexadecanol, 4 parts of glass bead, glass fiber reinforcement graphene aerogel 13
Part, 00 35 parts of polyethylene glycol-8,6 parts of lauric acid, 17 parts of phosphorus oxychloride, 1.5 parts of foam stabiliser, 110 parts of polyether polyol,
30 parts of diethanol amine, 0.8 part of triethanolamine, 0.8 part of dibutyltin dilaurate, 0.7 part of triethylenediamine, polyisocyanic acid
165 parts of ester, 115 parts of tetrahydrofuran, 60 parts of n-hexane, 4 parts of distilled water.
3. a kind of composite heat insulatant thermal insulation material according to claim 1, it is characterised in that：The glass fiber reinforcement stone
The preparation method of black alkene aeroge is：
（1）Glass fibre ethyl alcohol, deionized water are successively flowed back cleaning 6-8 h, and dry 12 h at 120 DEG C are put into carding machine
It is middle to carry out fluffy processing；
（2）The graphene oxide water solution of 6 mL 5mg/mL and 60 mg vitamin Cs are uniformly mixed, salable mold is poured into
In, by step（1）Fiber tiles according to die size by different level in mold, guarantees that fibrous layer is evenly distributed；
（3）Mold is sealed, is placed into after heating 4-5min in 95 DEG C of baking oven and takes out, cooled to room temperature；
（4）By in mold there are liquid pouring come out, deionized water is added thereto, pours out deionized water after 10min, then
It is added after ethyl alcohol impregnates 2h and pours out, add ethyl alcohol and impregnated and poured out afterwards for 24 hours；
（5）It is put into 65 DEG C of air dry oven and is dried for 24 hours to obtain the final product.
4. a kind of composite heat insulatant thermal insulation material according to claim 1, it is characterised in that：The foam stabiliser is silicon
Oil or sodium n-alkylbenzenesulfonate.
5. a kind of composite heat insulatant thermal insulation material according to claim 1, it is characterised in that：The polyether polyol is gathered
The hydroxyl value of ether is 350.
6. a kind of composite heat insulatant thermal insulation material according to claim 1, it is characterised in that：The polyisocyanates it is different
Cyanic acid ester group content is 31.0.
7. a kind of described in any item preparation methods of composite heat insulatant thermal insulation material of claim 1 to 2, it is characterised in that：Including
Following steps：
The first step：Polyethylene glycol-8 00, hexadecanol and lauric acid are dissolved in tetrahydrofuran and obtain solution A；
Second step：Solution B is mixed to obtain in phosphorus oxychloride and n-hexane, is poured into constant pressure funnel, is quickly stirred at 45 DEG C
And be slowly dropped in solution A, after stand 1-1.5h, rotary evaporation obtains solution C；
Third step：Solution C is to slowly warm up to 90-100 DEG C, quickly stirring under be slowly dropped into polyether polyol, after react
1.5-2h；
4th step：Diethanol amine is added and stirs 5-10min；
5th step：It is mixed that triethanolamine, dibutyltin dilaurate, triethylenediamine, foam stabiliser and distilled water is added
It closes dispersion 10-20min and obtains component D；
6th step：At 30 DEG C be added glass bead continue stir 10-20min obtain component E；
7th step：Polyimide aerogels, glass fiber reinforcement graphene aerogel and polyisocyanates are mixed, at 30 DEG C
Stir evenly to obtain component F；
8th step：Component E and component F is mixed, high-speed stirred 30-40s is rapidly injected in mold, is molded rapidly, is put into
100-120 DEG C of baking oven cures 4-6h；
9th step：Sample is taken out in die sinking, removes the hard epidermis in surface to obtain the final product.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104629583A (en) * | 2015-02-03 | 2015-05-20 | 芜湖市宝艺游乐科技设备有限公司 | Super heat insulation coating containing polyimide aerogel microspheres and preparation method thereof |
| CN105348479A (en) * | 2014-08-21 | 2016-02-24 | 南京欧格节能科技有限公司 | High-weatherability nano-composite thermal insulating material and preparation method thereof and insulation board |
| CN106046762A (en) * | 2016-06-29 | 2016-10-26 | 安徽广燕新材料科技有限责任公司 | Modified polyurethane thermal-insulation composite board |
-
2018
- 2018-05-28 CN CN201810520825.4A patent/CN108822521A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105348479A (en) * | 2014-08-21 | 2016-02-24 | 南京欧格节能科技有限公司 | High-weatherability nano-composite thermal insulating material and preparation method thereof and insulation board |
| CN104629583A (en) * | 2015-02-03 | 2015-05-20 | 芜湖市宝艺游乐科技设备有限公司 | Super heat insulation coating containing polyimide aerogel microspheres and preparation method thereof |
| CN106046762A (en) * | 2016-06-29 | 2016-10-26 | 安徽广燕新材料科技有限责任公司 | Modified polyurethane thermal-insulation composite board |
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Application publication date: 20181116 |