CN102557529B - Vermiculite composite thermal insulation material - Google Patents
Vermiculite composite thermal insulation material Download PDFInfo
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- CN102557529B CN102557529B CN 201210046140 CN201210046140A CN102557529B CN 102557529 B CN102557529 B CN 102557529B CN 201210046140 CN201210046140 CN 201210046140 CN 201210046140 A CN201210046140 A CN 201210046140A CN 102557529 B CN102557529 B CN 102557529B
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- Prior art keywords
- vermiculite
- thermal insulation
- major ingredient
- composite thermal
- auxiliary material
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- 239000010455 vermiculite Substances 0.000 title claims abstract description 46
- 229910052902 vermiculite Inorganic materials 0.000 title claims abstract description 46
- 235000019354 vermiculite Nutrition 0.000 title claims abstract description 46
- 239000012774 insulation material Substances 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 10
- 239000005011 phenolic resin Substances 0.000 claims abstract description 10
- 239000004902 Softening Agent Substances 0.000 claims abstract description 8
- 239000003365 glass fiber Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 6
- 229920003987 resole Polymers 0.000 claims description 6
- 239000001117 sulphuric acid Substances 0.000 claims description 6
- 235000011149 sulphuric acid Nutrition 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- RSCACTKJFSTWPV-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 RSCACTKJFSTWPV-UHFFFAOYSA-N 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000012190 activator Substances 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- -1 phenolic aldehyde Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Building Environments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a vermiculite composite thermal insulation material, which consists of main material A, main material B, auxiliary material A and auxiliary material B. The vermiculite composite thermal insulation material is characterized in that: the parts by weight of the main material A and the main material B are as follows: 1 to 8 parts of vermiculite as the main material A with the grain size of 30 to 100 meshes and 1 to 8 percent of phenolic resin as the main material B; the auxiliary material A is the mixture of talcum powder, foaming agent, activator, softening agent and curing agent mixed according to any proportion, and the part by weight of the auxiliary material A is 25 to 45 percent of the main material B; the auxiliary material B is short glass fibres, and the part by weight of the auxiliary material B is not higher than 10 percent of the main material B. The thermal insulation material can reach the highest burning level, i.e. level A, the manufacturing cost of the level A thermal insulation material is reduced, and various properties are good; the vermiculite composite thermal insulation material cannot be formed into building waste, scraps can be directly filled back into farmlands after being ground, and cannot harm farmlands, and the application range is wide.
Description
Technical field
The present invention relates to field of compound material, especially a kind of building thermal insulation material.
Background technology
The extensive lagging material that adopts of building trade has the poly-plate etc. of moulding of PES, PEF at present, this type of lagging material is in production, use, not only environment is brought outside the pollution, more serious is easy firing, easily aging (national Specification work-ing life be 25 years, use to occur catabiosis in various degree after 6 years).Adopt the poly-plate of moulding of PES, PEF, no matter common variety still is fire-retardant, a fire-retardant just conception of species of these materials, their material molecular structure is exactly the chemical molecular structure that very easily burns, also can produce a large amount of poisonous, obnoxious flavour during burning, bring great potential safety hazard and harm can for building and people's life.Simultaneously, the chemical constitution of this class material causes in the building life cycle, will carry out replacing, the maintenance of three thermal insulation layers at least, has wasted manpower, financial resources and natural resources in a large number.
Vermiculite is one of raw material of the making lagging material used always, but its water-intake rate is very high, be easy to draw the moisture in the environment, influence its heat retaining property, binding property is also relatively poor, if vermiculite is formed with the material of shape, must need a large amount of full-bodied tackiness agents, through high pressure, high temperature process moulding, a large amount of full-bodied tackiness agents has not only increased the manufacturing cost of vermiculite warming plate, and have a strong impact on the feature of environmental protection of vermiculite goods, reduce the burning rank of material.Development energy-saving and environmental protection, safety, life-span building heat preservation long, cheap, easy construction are the task of top priority of industry, enterprise and society.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art that a kind of vermiculite composite thermal insulation materials is provided, solve inorganic heat insulation material cost height, problems such as construction difficulty.
For achieving the above object, the technical scheme that the present invention takes is: a kind of vermiculite composite thermal insulation materials, comprise major ingredient A, B and auxiliary material A, B, and it is characterized in that the weight part of described major ingredient A, B is:
Major ingredient A: granularity is 30-100 purpose vermiculite 1-8 part;
Major ingredient B: resol 1-8 part;
Described auxiliary material A is the mixture that is mixed by arbitrary proportion by talcum powder, whipping agent, promoting agent, softening agents and solidifying agent, and its weight part is the 25-45% of major ingredient B;
Described auxiliary material B is short glass fiber, and its weight part is to be no more than 10% of major ingredient B.
Described lagging material preparation method comprises the steps:
(1) selection by winnowing: vermiculite by selection by winnowing, is removed impurity and dust, obtain clean vermiculite raw material;
(2) pre-treatment: according to the above ratio the vermiculite after the selection by winnowing is put into the sulphuric acid soln that concentration is 2.5mol/L, temperature of reaction is 105-112 ℃, and the reaction times is 1.8-2.2h, vermiculite is constructed modify and organic process;
(3) foaming: according to the above ratio resol, talcum powder, whipping agent, promoting agent, softening agents and solidifying agent are added in the foaming machine successively, foam being not less than under 20 ℃ of normal temperature, make foamed phenolic resin;
(4) toughness reinforcing processing: in foamed phenolic resin, add short glass fiber according to the above ratio, stir;
(5) injection molding: pretreated vermiculite drop from sulphuric acid soln is gone out, put into foamed phenolic resin then and stir, the 1-2% that presses vermiculite weight again adds rubber powder, adds 0.8-1.2 kilogram corrosion inhibitor by one cube of vermiculite simultaneously, inject mould, moulding in 3-5 hour after stirring.
In the described injection step, add cement cloth or non-woven fabrics in the mould top and bottom, with the folding strength that increases finished product and with the bounding force of buildings.
Described corrosion inhibitor is calcium oxide, ferric oxide, calcium carbonate or Borax pentahydrate.
The invention has the beneficial effects as follows:
1, based on China thing hide abundant, inexpensive, do not fire, the vermiculite of heat-insulating property excellence, it is carried out the organic process of physics, chemical property, realize the best complex basic point with organic foaming phenolic aldehyde, maximization extracts the advantage coexistence complementation of these two kinds of materials, reach the burning rank A level of highest level, reduced the manufacturing cost of A level lagging material significantly, cost is low, performance good;
2, in vermiculite and foaming phenolic aldehyde recombination process, increase glass fibre, softening agents, solidifying agent etc., strengthen every performance index of vermiculite composite fireproof lagging material, the hydrophobic nature of inorganic A level lagging material is carried to the limit, high insulating effect, alkali-free, Halogen, the serious consequence that fundamentally avoided returning efflorescence behind halogen, the anti-alkali, embrittlement, comes off is a kind of composite multi-functional lagging material that meets very much the development trend of international building lagging material;
3, this lagging material all adopt nontoxic, innoxious substance is compound is mixed, and can not form building waste, direct backfill farmland after the corner blanking is pulverized does not have harm to the farmland, the major ingredient vermiculite also plays soil and preserves moisture, the effect of constant humidity.Simultaneously, vermiculite does not have carbon and element sulphur, contain hydrogen, oxygen, carbon in the phenolic aldehyde molecular configuration, they do not burn, do not melt in 1000 ℃ of raging fires, the very high temperature differentiation phase, the gas that overflows is also nontoxic, tasteless, and vermiculite, phenolic aldehyde are all nontoxic, harmless material, agrees with country's requirements of green environmental protection;
4, applied range is used for that the very high building heat preserving of fire protection requirements such as building roofing insulation, building masonry wall insulation, steel-structure factory building, large scale industry factory building, prefabricated house, freezer, dust proof workshop, one off houses, gymnasium, supermarket, the insulation of floor heating engineering, square ground, ground frost heave control that (airstrip, super highway) is heat insulation, insulation works etc.
Embodiment
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explaining the present invention, is not for restriction scope of the present invention.
Embodiment 1:
A kind of vermiculite composite thermal insulation materials comprises major ingredient A, B and auxiliary material A, B, it is characterized in that the weight part of described major ingredient A, B is:
Major ingredient A: granularity is 30-100 purpose vermiculite 1-8 part;
Major ingredient B: resol 1-8 part;
Described auxiliary material A is the mixture that is mixed by arbitrary proportion by talcum powder, whipping agent, promoting agent, softening agents and solidifying agent, and its weight part is the 25-45% of major ingredient B;
Described auxiliary material B is short glass fiber, and its weight part is to be no more than 10% of major ingredient B.
Described lagging material preparation method comprises the steps:
(1) selection by winnowing: vermiculite by selection by winnowing, is removed impurity and dust, obtain clean vermiculite raw material;
(2) pre-treatment: put into the sulphuric acid soln that concentration is 2.5mol/L by the vermiculite of the weight of listing in the table 1 after with selection by winnowing, temperature of reaction is 105-112 ℃, and the reaction times is 1.8-2.2h, vermiculite is constructed modify and organic process;
(3) foaming: by the weight of listing in the table 1 resol, talcum powder, whipping agent, promoting agent, softening agents and solidifying agent are added in the foaming machine successively, foam being not less than under 20 ℃ of normal temperature, make foamed phenolic resin;
(4) toughness reinforcing processing: in foamed phenolic resin, add short glass fiber by the weight of listing in the table 1, stir;
(5) injection molding: pretreated vermiculite drop from sulphuric acid soln is gone out, put into foamed phenolic resin then and stir, the 1-2% that presses vermiculite weight again adds rubber powder, adds 0.8-1.2 kilogram corrosion inhibitor by one cube of vermiculite simultaneously, inject mould, moulding in 3-5 hour after stirring.
In the described injection step, add cement cloth or non-woven fabrics in the mould top and bottom, with the folding strength that increases finished product and with the bounding force of buildings.
Described corrosion inhibitor is calcium oxide, ferric oxide, calcium carbonate or Borax pentahydrate.
Embodiment 2:
With embodiment 1, each composition proportion weight has provided data in table 1.
Embodiment 3:
With embodiment 1, each composition proportion weight has provided data in table 1.
Embodiment 4:
With embodiment 1, each composition proportion weight has provided data in table 1.
Embodiment 5:
With embodiment 1, each composition proportion weight has provided data in table 1.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Table 1
Claims (3)
1. a vermiculite composite thermal insulation materials comprises major ingredient A, B and auxiliary material A, B, it is characterized in that the weight part of described major ingredient A, B is:
Major ingredient A: granularity is 30-100 purpose vermiculite 1-8 part;
Major ingredient B: resol 1-8 part;
Described auxiliary material A is the mixture that is mixed by arbitrary proportion by talcum powder, whipping agent, promoting agent, softening agents and solidifying agent, and its weight part is the 25-45% of major ingredient B;
Described auxiliary material B is short glass fiber, and its weight part is to be no more than 10% of major ingredient B;
The preparation method comprises the steps:
(1) selection by winnowing: vermiculite by selection by winnowing, is removed impurity and dust, obtain clean vermiculite raw material;
(2) pre-treatment: according to the above ratio the vermiculite after the selection by winnowing is put into the sulphuric acid soln that concentration is 2.5mol/L, temperature of reaction is 105-112 ℃, and the reaction times is 1.8-2.2h, vermiculite is constructed modify and organic process;
(3) foaming: according to the above ratio resol, talcum powder, whipping agent, promoting agent, softening agents and solidifying agent are added in the foaming machine successively, foam being not less than under 20 ℃ of normal temperature, make foamed phenolic resin;
(4) toughness reinforcing processing: in foamed phenolic resin, add short glass fiber according to the above ratio, stir;
(5) injection molding: pretreated vermiculite drop from sulphuric acid soln is gone out, put into foamed phenolic resin then and stir, the 1-2% that presses vermiculite weight again adds rubber powder, adds 0.8-1.2 kilogram corrosion inhibitor by one cube of vermiculite simultaneously, inject mould, moulding in 3-5 hour after stirring.
2. a kind of vermiculite composite thermal insulation materials as claimed in claim 1 is characterized in that in the described injection step, adds cement cloth or non-woven fabrics in the mould top and bottom, with the folding strength that increases finished product and with the bounding force of buildings.
3. a kind of vermiculite composite thermal insulation materials as claimed in claim 1 is characterized in that described corrosion inhibitor is calcium oxide, ferric oxide, calcium carbonate or Borax pentahydrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210046140 CN102557529B (en) | 2012-02-27 | 2012-02-27 | Vermiculite composite thermal insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210046140 CN102557529B (en) | 2012-02-27 | 2012-02-27 | Vermiculite composite thermal insulation material |
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| Publication Number | Publication Date |
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| CN102557529A CN102557529A (en) | 2012-07-11 |
| CN102557529B true CN102557529B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210046140 Expired - Fee Related CN102557529B (en) | 2012-02-27 | 2012-02-27 | Vermiculite composite thermal insulation material |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272019A (en) * | 2015-11-21 | 2016-01-27 | 陆仲权 | Heat insulation cement and preparation method thereof |
| CN105924037B (en) * | 2016-04-25 | 2018-01-30 | 苏州能华节能环保科技有限公司 | A kind of exterior wall environment-friendly insulating material |
| CN107915953A (en) * | 2017-11-21 | 2018-04-17 | 南宁可煜能源科技有限公司 | A kind of flat plate collector compound insulating material and preparation method thereof |
| CN107739168B (en) * | 2017-11-29 | 2020-08-14 | 山东建筑大学 | Flame-retardant thermal-insulation material containing expanded vermiculite with low thermal conductivity coefficient and preparation method thereof |
| CN115073207A (en) * | 2022-02-22 | 2022-09-20 | 咸阳职业技术学院 | Novel material preparation process of assembled insulation board |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544538A (en) * | 2003-11-14 | 2004-11-10 | 华南理工大学 | Organic modified phyllosilicate and method for preparing same |
| CN1597831A (en) * | 2004-08-09 | 2005-03-23 | 谭诺夫 | Waterproof thermal insulating constructional material and preparation process thereof |
| CN1880259A (en) * | 2005-06-14 | 2006-12-20 | 刘贵堂 | Water-preserving materials and process for preparing same |
| CN101700966A (en) * | 2009-12-02 | 2010-05-05 | 黑龙江省木材科学研究所 | Aspen wood shavings and vermiculite composite thermal insulation materials and preparation method thereof |
| CN101709136A (en) * | 2009-12-10 | 2010-05-19 | 谢建华 | Foamed phenolic resin composition |
| CN101724171A (en) * | 2009-12-10 | 2010-06-09 | 谢建华 | Preparation method of phenolic resin composite for foam |
-
2012
- 2012-02-27 CN CN 201210046140 patent/CN102557529B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544538A (en) * | 2003-11-14 | 2004-11-10 | 华南理工大学 | Organic modified phyllosilicate and method for preparing same |
| CN1597831A (en) * | 2004-08-09 | 2005-03-23 | 谭诺夫 | Waterproof thermal insulating constructional material and preparation process thereof |
| CN1880259A (en) * | 2005-06-14 | 2006-12-20 | 刘贵堂 | Water-preserving materials and process for preparing same |
| CN101700966A (en) * | 2009-12-02 | 2010-05-05 | 黑龙江省木材科学研究所 | Aspen wood shavings and vermiculite composite thermal insulation materials and preparation method thereof |
| CN101709136A (en) * | 2009-12-10 | 2010-05-19 | 谢建华 | Foamed phenolic resin composition |
| CN101724171A (en) * | 2009-12-10 | 2010-06-09 | 谢建华 | Preparation method of phenolic resin composite for foam |
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Owner name: BAIYIN HUYANG ENGINEERING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YOU ZHIPING Effective date: 20140922 Free format text: FORMER OWNER: LI BORAN Effective date: 20140922 |
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Effective date of registration: 20140922 Address after: 730900 -21, building 65, 11 Lanzhou Road, Baiyin District, Gansu, Baiyin, 10, 1-03 Patentee after: Silver poplar Engineering Technology Co., Ltd. Address before: 730900 No. 195 metallurgy Road, Baiyin District, Gansu, Baiyin Patentee before: You Zhiping Patentee before: Li Boran |
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