CN109486458A - A kind of low cost timber structure anchoring adhesive and preparation method thereof - Google Patents
A kind of low cost timber structure anchoring adhesive and preparation method thereof Download PDFInfo
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- CN109486458A CN109486458A CN201811234100.5A CN201811234100A CN109486458A CN 109486458 A CN109486458 A CN 109486458A CN 201811234100 A CN201811234100 A CN 201811234100A CN 109486458 A CN109486458 A CN 109486458A
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- anchoring adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/44—Amides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to a kind of inexpensive timber structure anchoring adhesives and preparation method thereof, anchoring adhesive is made of two kinds of components of first, second, mixing ratio is 5:(1.7~2.1), first component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughener, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, and 4 parts of diformazan ammonia finish ethyl alcohol, 5 parts of thixotropic agent, 28 parts of swelling agents, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.Timber structure anchoring adhesive of the invention has the characteristics that wear-resisting, heat-resisting, ageing-resistant, erosion-resisting, good toughness, and intensity is high, and adhesive property is good, reaches lower cost with reasonable proportion, more preferably performance, and will not generate formaldehyde and pernicious gas, safety and environmental protection.
Description
Technical field
The invention belongs to build timber structure mounting technique field, and in particular to a kind of low cost timber structure anchoring adhesive and its system
Preparation Method.
Background technique
It is exactly the connection between timber structure that timber buildings decoration, which installs a critically important technology,.Common connection type has
Two kinds, first is that being provided with corresponding falcon binding structure in timber structure, installation connection is carried out, there are also one is carry out by anchorage inserted bar glue
Connection, anchoring adhesive belong to construction structure glue class, and organic type anchoring adhesive and inorganic type bar planting can be divided by forming upper anchoring adhesive from material
Glue.For pursuing for the aesthetics of architecture, certain structures are inconvenient by the connection of falcon binding structure, and corresponding aesthetics effect is not achieved
Fruit, and anchorage inserted bar glue can effectively solve this problem.
Common anchoring adhesive is organic type anchoring adhesive currently on the market.But haves the defects that the following aspects: (1) resistance to
Hygrothermal Properties are poor, easy to aging, toxic, price is high；(2) execution conditions require tight, cannot construct under high temperature and low temperature；Low
It is not easy to solidify under temperature；It is easy denaturation at high temperature；(3) use condition limitation is big, in some load-bearing positions in use, mechanical strong
Degree is insufficient, and adhesive property is inadequate.
Summary of the invention
The purpose of the present invention is to solve the deficiencies in the prior art, and provide a kind of inexpensive timber structure anchoring adhesive and its
Preparation method has the characteristics that wear-resisting, heat-resisting, ageing-resistant, erosion-resisting, good toughness, and intensity is high, and raw material availability is high, at low cost,
The characteristics of safety non-pollution.
The present invention adopts the following technical scheme:
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 75~90 parts of epoxy resin E51,10~15 parts of furfuryl alcohol resins, 5~
10 parts of DBP toughener, 5~10 parts of acetone diluents；40~50 parts of polyamide curing agents, 4~6 parts of activated silica diatomaceous earths, 4~6 parts
Cumyl peroxide；
Second component is made of the raw material of following weight parts: 3~5 parts of dicalcium powders, and 3~5 parts of diformazan ammonia finish ethyl alcohol, 4~6 parts of touchings
Become agent, 20~35 parts of swelling agents, 60~70 parts of sodium radio-phosphate,P-32 solutions, 15~25 parts of sodium silicate solutions, 3~5 parts of water-reducing agents and 0.1~
0.35 part of methyl lignin.
Further, the timber structure anchoring adhesive, first component are made of the raw material of following weight parts: 80~85 parts of epoxies
Resin E51,12~14 parts of furfuryl alcohol resins, 6~9 parts of DBP toughener, 7~8 parts of acetone diluents；43~48 parts of polyamide cures
Agent, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, 25~
30 parts of swelling agents, 62~65 parts of sodium radio-phosphate,P-32 solutions, 18~23 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.18~0.25 part of first
Sill quality.
Further, the timber structure anchoring adhesive, first component are made of the raw material of following weight parts: 82 parts of epoxy resin
E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughener, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5
Part cumyl peroxide；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 28 parts
Swelling agent, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.
Further, in the timber structure anchoring adhesive, the methyl lignin is wooden using demethylation sulfate
Element.
Further, in the timber structure anchoring adhesive, the swelling agent using aluminium oxide and aluminum aluminum sulfate according to
The mixture that 3:1 is mixed.
Further, in the timber structure anchoring adhesive, the water-reducing agent is using high performance water reducing agent of polyocarboxy acid.
Further, in the timber structure anchoring adhesive, the thixotropic agent using fumed silica and polyamide wax according to
(8~10): 1 ratio mixes.
The present invention also provides a kind of preparation method of inexpensive timber structure anchoring adhesive, steps are as follows:
(1) raw material components of first component are added according to the proportion into vacuum pulverizer spare after crushing uniformly；
(2) raw material of second component is formed to addition into twin shaft blender according to the proportion, is mixed in the case where sealing oxygen barrier environment
It is spare afterwards；
(3) by first component and second component according to 5:(1.7~2.1) ratio respectively bottle respectively, in use, second
Component pours into first component Packaging Bottle, up to anchoring adhesive after mixing.
Compared with prior art, the present invention timber structure anchoring adhesive of the invention is with wear-resisting, heat-resisting, ageing-resistant, anticorrosive
The characteristics of, good toughness, intensity is high, and adhesive property is good, reaches lower cost with reasonable proportion, more preferably performance, and not
Formaldehyde and pernicious gas, safety and environmental protection can be generated；After polyamide curing agent and diformazan ammonia finish ethyl alcohol blending, wet-heat resisting can be improved
Ageing properties；Furfuryl alcohol resin derives from agricultural and sideline product, such as cotton seed hulls, rice husk, corncob and cornstalk, and output is big, cost
It is low, and anti-corrosion can be promoted；Methyl lignin has the function of surfactant and adhesive, the proportion catalysis through the application
Afterwards, the performances such as the wear-resisting of anchoring adhesive, heat-resisting ageing-resisting can be improved.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
Embodiment 1:
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
The timber structure anchoring adhesive, first component are made of the raw material of following weight parts: 80 parts of epoxy resin E51, and 12 parts
Furfuryl alcohol resin, 6 parts of DBP toughener, 7 parts of acetone diluents；43 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of peroxidating
Diisopropylbenzene (DIPB)；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 25 parts
Swelling agent, 62 parts of sodium radio-phosphate,P-32 solutions, 18 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.18 part of methyl lignin.
A kind of preparation method of low cost timber structure anchoring adhesive, step are as follows:
(1) raw material components of first component are added according to the proportion into vacuum pulverizer spare after crushing uniformly；
(2) raw material of second component is formed to addition into twin shaft blender according to the proportion, is mixed in the case where sealing oxygen barrier environment
It is spare afterwards；
(3) by first component and second component according to 5:(1.7~2.1) ratio respectively bottle respectively, in use, second
Component pours into first component Packaging Bottle, up to anchoring adhesive after mixing.
Embodiment 2:
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
The timber structure anchoring adhesive, first component are made of the raw material of following weight parts: 85 parts of epoxy resin E51, and 14 parts
Furfuryl alcohol resin, 9 parts of DBP toughener, 8 parts of acetone diluents；43~48 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of mistakes
Aoxidize diisopropylbenzene (DIPB)；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 30 parts
Swelling agent, 65 parts of sodium radio-phosphate,P-32 solutions, 23 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.25 part of methyl lignin.
The preparation method is the same as that of Example 1.
Embodiment 3:
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughenings
Agent, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 28 parts
Swelling agent, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.
The preparation method is the same as that of Example 1.
Embodiment 4
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughenings
Agent, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 28 parts
Swelling agent, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.The wood knot
In structure anchoring adhesive, mixture that the swelling agent is mixed using aluminium oxide and aluminum aluminum sulfate according to 3:1.The wood knot
In structure anchoring adhesive, the water-reducing agent is using high performance water reducing agent of polyocarboxy acid.In the timber structure anchoring adhesive, the thixotropic agent
Using fumed silica and polyamide wax according to (8~10): 1 ratio mixes.
The preparation method is the same as that of Example 1.
Comparative example 1
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,7 parts of DBP toughener, 8 parts of acetone dilutions
Agent；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, 5 parts of thixotropic agent, 28 parts of swelling agents, 63 parts of phosphoric acid
Sodium solution, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.
Comparative example 2
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 3:(1.7~2.1)；
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughenings
Agent, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 28 parts
Swelling agent, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.
Comparative example 3
A kind of low cost timber structure anchoring adhesive, is made of two kinds of components of first, second, in use, component A and component B are pressed
It is mixed according to weight, mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughenings
Agent, 8 parts of acetone diluents；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, 5 parts of thixotropic agent, 28 parts of swelling agents, 63 parts of phosphoric acid
Sodium solution, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents.
To the embodiment of the present invention 1 to 4 prepare timber structure anchoring adhesive and comparative example 1 to 3 prepare timber structure anchoring adhesive into
Row compares, and experiment detection is carried out in terms of mechanical strength, adhesive property, as a result as shown in the table:
1 mechanical strength index of table
2 mechanical strength index of table
3 adhesive property parameter of table
4 non-volatile content of table
From the data of Tables 1 and 2 can be seen that a kind of preparation-obtained inexpensive timber structure anchoring adhesive of the present invention
Resistance to compression and tensile strength are much higher than comparative example, and the adhesive property of the anchoring adhesive of the application is excellent as can be found from Table 3, can from table 4
With discovery, non-volatile content is also high and comparative example, and in actual use, will not generate volatile harmful gases and first
Aldehyde has the characteristics that safe and harmless.In addition the preparation cost of the anchoring adhesive of the application be the cost on normal market 40~
70% or so, cost is lower, and performance is more preferable.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (8)
1. a kind of low cost timber structure anchoring adhesive, it is characterised in that: be made of two kinds of components of first, second, in use, by component A with
Component B is mixed according to weight, and mixing ratio is 5:(1.7~2.1)；
First component is made of the raw material of following weight parts: 75~90 parts of epoxy resin E51,10~15 parts of furfuryl alcohol resins, and 5~10 parts
DBP toughener, 5~10 parts of acetone diluents；40~50 parts of polyamide curing agents, 4~6 parts of activated silica diatomaceous earths, 4~6 parts of peroxides
Change diisopropylbenzene (DIPB)；
Second component is made of the raw material of following weight parts: 3~5 parts of dicalcium powders, and 3~5 parts of diformazan ammonia finish ethyl alcohol, 4~6 parts of thixotropings
Agent, 20~35 parts of swelling agents, 60~70 parts of sodium radio-phosphate,P-32 solutions, 15~25 parts of sodium silicate solutions, 3~5 parts of water-reducing agents and 0.1~
0.35 part of methyl lignin.
2. a kind of inexpensive timber structure anchoring adhesive according to claim 1, it is characterised in that:
First component is made of the raw material of following weight parts: 80~85 parts of epoxy resin E51,12~14 parts of furfuryl alcohol resins, and 6~9 parts
DBP toughener, 7~8 parts of acetone diluents；43~48 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of peroxidating diisopropyls
Benzene；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, the complete ethyl alcohol of 4 parts of diformazan ammonia, 5 parts of thixotropic agent, and 25~30 parts
Swelling agent, 62~65 parts of sodium radio-phosphate,P-32 solutions, 18~23 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.18~0.25 part of methyl wood
Quality.
3. a kind of inexpensive timber structure anchoring adhesive according to claim 1, it is characterised in that:
First component is made of the raw material of following weight parts: 82 parts of epoxy resin E51,13 parts of furfuryl alcohol resins, 7 parts of DBP toughener, and 8
Part acetone diluent；45 parts of polyamide curing agents, 5 parts of activated silica diatomaceous earths, 5 parts of cumyl peroxides；
Second component is made of the raw material of following weight parts: 4 parts of dicalcium powders, and 4 parts of diformazan ammonia finish ethyl alcohol, 5 parts of thixotropic agent, 28 parts of expansions
Agent, 63 parts of sodium radio-phosphate,P-32 solutions, 20 parts of sodium silicate solutions, 4 parts of water-reducing agents and 0.23 part of methyl lignin.
4. a kind of inexpensive timber structure anchoring adhesive according to claim 1, which is characterized in that the methyl lignin uses
Be demethylation sulfate-reducing conditions.
5. a kind of inexpensive timber structure anchoring adhesive according to claim 1, which is characterized in that the swelling agent using
The mixture that aluminium oxide and aluminum aluminum sulfate are mixed according to 3:1.
6. a kind of inexpensive timber structure anchoring adhesive according to claim 1, which is characterized in that the water-reducing agent using
High performance water reducing agent of polyocarboxy acid.
7. a kind of inexpensive timber structure anchoring adhesive according to claim 1, which is characterized in that the thixotropic agent uses gas phase
Silica and polyamide wax are according to (8~10): 1 ratio mixes.
8. a kind of preparation method of inexpensive timber structure anchoring adhesive as described in claim 1 to 7 is any, it is characterised in that:
(1) raw material components of first component are added according to the proportion into vacuum pulverizer spare after crushing uniformly；
(2) raw material of second component is formed to addition into twin shaft blender according to the proportion, mixes standby in the case where sealing oxygen barrier environment
With；
(3) by first component and second component according to 5:(1.7~2.1) ratio respectively bottle respectively, in use, second component
First component Packaging Bottle is poured into, up to anchoring adhesive after mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234100.5A CN109486458A (en) | 2018-10-23 | 2018-10-23 | A kind of low cost timber structure anchoring adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234100.5A CN109486458A (en) | 2018-10-23 | 2018-10-23 | A kind of low cost timber structure anchoring adhesive and preparation method thereof |
Publications (1)
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| CN109486458A true CN109486458A (en) | 2019-03-19 |
Family
ID=65692471
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| CN201811234100.5A Withdrawn CN109486458A (en) | 2018-10-23 | 2018-10-23 | A kind of low cost timber structure anchoring adhesive and preparation method thereof |
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| CN107935510A (en) * | 2017-12-14 | 2018-04-20 | 南京工业大学 | A kind of low cost timber structure anchoring adhesive and preparation method thereof |
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2018
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| JP2011116930A (en) * | 2009-10-27 | 2011-06-16 | Panasonic Electric Works Co Ltd | Vegetable-originated adhesive, vegetable originated composition, and wood composite material |
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