CN108084891A - A kind of modified water glass based Wood Adhesives - Google Patents
A kind of modified water glass based Wood Adhesives Download PDFInfo
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- CN108084891A CN108084891A CN201611037989.9A CN201611037989A CN108084891A CN 108084891 A CN108084891 A CN 108084891A CN 201611037989 A CN201611037989 A CN 201611037989A CN 108084891 A CN108084891 A CN 108084891A
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- Prior art keywords
- adhesive
- modified
- prodan
- water glass
- mass fraction
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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
- C09J1/00—Adhesives based on inorganic constituents
- C09J1/02—Adhesives based on inorganic constituents containing water-soluble alkali silicates
-
- 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
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
A kind of modified water glass based Wood Adhesives, for the defects of waterglass adhesive is low with timber cohesion, poor water resistance, big brittleness, waterglass adhesive is modified by silane coupling agent and prodan to promote the bond strength and water resistance of waterglass and timber.The addition of a small amount of silane coupling agent can effectively promote the bond strength of adhesive and timber, and prodan has positive effect to the water resistance for improving waterglass adhesive, and modified waterglass adhesive can tentatively meet its application demand in timber coheres.
Description
Technical field
The present invention relates to-kind of adhesive more particularly to a kind of modified water glass based Wood Adhesives.
Background technology
At present, adhesive used in China's timber industry is mainly phenolic resin glue, urea-formaldehyde resin adhesive, melamino-formaldehyde tree
The organic synthetic resins glue such as fat glue.The glue-joint strength height of synthetic resin gum, water-tolerant, sizing are convenient, but these resinaes
Adhesive has formaldehyde monomers remaining, understands release formaldehyde class toxic gas and pollutes environment.Particularly when timber as interior decoration,
During the materials'use of life and office furniture, accumulation of the formaldehyde indoors in air can cause health serious damage.
It is of great significance so developing environment friendly and pollution-free based Wood Adhesives.
Waterglass is the complicated solution of a variety of polysilicates, is-kind of gelling agent of good performance, has and excellent coheres energy
Power.It is-kind of inorganic adhesive by the adhesive that base stock is prepared of waterglass, the adhesive is organic with other there is no formaldehyde
Harmful toxic matter pollutes, and glue-joint strength is high, production cost is low, high temperature resistant Sui can be protruded, sodium silicate binder in casting industry
It has been widely used.Under the trend of the environmental protection of social pay attention to day by day and health, such adhesive is cohered in following timber
Field has broad application prospects.But waterglass adhesive is rarely employed in current wood industry, and on waterglass adhesive
Application study is also less in wood industry.It is found by market survey and data collection analysis, waterglass adhesive is to timber
Be to limit it wood industry is applied the main reason for the defects of cohesion is high, poor water resistance, big brittleness.
The content of the invention
The defects of the purpose of the present invention is being directed to waterglass adhesive low with timber cohesion, poor water resistance, big brittleness, if
- kind of modified water glass based Wood Adhesives are counted.
The technical solution adopted by the present invention to solve the technical problems is：
Modified water glass based Wood Adhesives to prepare raw material as follows：Sodium silicate (modulus 3.0, mass fraction 40%), industry
Product；N-p (aminoethyl) -7- aminopropyl trimethoxysilanes (KH-792), industrial goods, purity 97% (mass fraction)；3- amino
Propyl-triethoxysilicane (KH-550), purity 97% (mass fraction)；Prodan is analyzed pure (AR)；Pine straight burr plate,
By GB/T14074.10-1993《Wood adhesive and its resin method of inspection wood gluing strength detection method》5mlTl thickness is made
Examination material.
The apparatus for preparation of modified water glass based Wood Adhesives is as follows：Electronic universal (pulling force) testing machine (0~1000N of range,
Precision 1N), Shenzhen City Xinsansi Metering Technology Co., Ltd；Electronic balance (maximum capacity 100g, precision 0.1rag), plum Teller
Hold in the palm benefit；Vernier caliper (precision 0.02rnm), Shanghai measurer factory.
The preparation method of silane coupler modified sodium silicate adhesive is as follows：Under rapid mixing conditions, to equipped with
N-J3- (aminoethyl)-r aminopropyl trimethoxysilanes (KH-792) or 3- aminopropans are slowly added dropwise in 100g sodium silicate beakers
Ethyl triethoxy silicane alkane (KH-550) after being added dropwise to complete, continues to stir 5min so that system is uniformly mixed, and is obtained silane coupled
Agent is modified sodium silicate adhesive.
The preparation method of composite modified waterglass adhesive is as follows：It is as follows：By the silane coupler modified sodium of 50g
Waterglass adhesive is placed in beaker, and prodan is milled into fine-powdered, adds in beaker, stirring, make waterglass adhesive with
Prodan powder is uniformly mixed, and obtains composite modified waterglass adhesive.
The modification adhesive for the KH-792 that addition mass fraction is 3% is chosen in the preparation, into-step addition fluosilicic acid
Sodium is modified (being denoted as the composite modified gluing agent of 1#).The modification adhesive for the KH-550 that addition mass fraction is 3% is chosen, into-step
Prodan is added to be modified（It is denoted as the composite modified gluing agent of 2#）.
The beneficial effects of the invention are as follows：
The addition of a small amount of silane coupling agent can effectively promote the bond strength of adhesive and timber, and prodan is to improving water glass
The water resistance of glass adhesive has positive effect, and modified waterglass adhesive can tentatively meet its application in timber coheres
Demand.
Specific embodiment
Case study on implementation 1：
Modified water glass based Wood Adhesives to prepare raw material as follows：Sodium silicate (modulus 3.0, mass fraction 40%), industry
Product；N-p (aminoethyl) -7- aminopropyl trimethoxysilanes (KH-792), industrial goods, purity 97% (mass fraction)；3- amino
Propyl-triethoxysilicane (KH-550), purity 97% (mass fraction)；Prodan is analyzed pure (AR)；Pine straight burr plate,
By GB/T14074.10-1993《Wood adhesive and its resin method of inspection wood gluing strength detection method》5mlTl thickness is made
Examination material.The apparatus for preparation of modified water glass based Wood Adhesives is as follows：Electronic universal (pulling force) testing machine (range o~1000N,
Precision 1N), Shenzhen City Xinsansi Metering Technology Co., Ltd；Electronic balance (maximum capacity 100g, precision 0.1rag), plum Teller
Hold in the palm benefit；Vernier caliper (precision 0.02rnm), Shanghai measurer factory.The preparation side of silane coupler modified sodium silicate adhesive
Method is as follows：Under rapid mixing conditions, N-J3- (aminoethyl)-r aminopropyls are slowly added dropwise in equipped with 100g sodium silicate beakers
Trimethoxy silane (KH-792) or 3-aminopropyltriethoxysilane (KH-550) after being added dropwise to complete, continue to stir 5min,
So that system is uniformly mixed, silane coupler modified sodium silicate adhesive is obtained.The preparation of composite modified waterglass adhesive
Method is as follows：It is as follows：The silane coupler modified sodium silicate adhesives of 50g are placed in beaker, by prodan
Fine-powdered is milled into, adds in beaker, stirring makes waterglass adhesive be uniformly mixed with prodan powder, obtains composite modified
Waterglass adhesive.The modification adhesive for the KH-792 that addition mass fraction is 3% is chosen in preparation, into-step addition fluosilicic acid
Sodium is modified (being denoted as the composite modified gluing agent of 1#).The modification adhesive for the KH-550 that addition mass fraction is 3% is chosen, into-step
Prodan is added to be modified（It is denoted as the composite modified gluing agent of 2#）.
Case study on implementation 2：
The modified water glass adhesive prepared is placed in the transparent vessel of sealing, is stood, the stability state of observation adhesive.Knot
Fruit and analysis：In silane coupler modified sodium silicate adhesive configuration process, add people with silane coupling agent, colloid is opened
Beginning slowly retrogradation.After the mass fraction of two kinds of silane coupling agents of KH-792 and KH-550 is more than 3%, modified adhesive is in 72h
It is present with gelatin phenomenon, modified adhesive loses sizing applicability.Prodan is used frequently as the cured crosslinking agent of waterglass,
Its crosslinked action can cause sodium silicate gel to cure, so, into-composite modified the waterglass that makes of step addition prodan
Adhesive is suitable only for now with the current.The preparation of adhesive has to consider the construction applicability of adhesive, 1# compound modified colloidals
The mass fraction that the mass fraction of KH-792 is 3%, 2# compound modified colloidals KH-550 is 30.When the prodan quality point of addition
When number is more than 5%, there is gelatin phenomenon in 30min in composite modified waterglass adhesive, and sizing working life is too short, it is difficult to full
Foot sizing requirement.When the prodan mass fraction of addition is below 50, the stability of composite modified sodium silicate adhesive
Sizing requirement can be met.
Case study on implementation 3：
Using timber as base material, silane coupler modified waterglass adhesive, composite modified is carried out with reference to GB/T14074.10-1993
The bonding strength test of waterglass adhesive.The smooth deal board (water content 13% (mass fraction)) of thick 5mm is taken, in examination material
Cemented surface difference gluing, glue-spread be 100g/m2 (single side).Then by 2 parallel rift grain pairings of examination materials-rise, 1.
Under the pressure of 0MPa, room temperature is kept for 24 hours.It is glued the length and width in face with vernier caliper measurement.The test specimen made is packed into and is drawn
Force tester fixture carries out extension test.With the speed continuous load of 5.880kN/min until destroying, reading is maximum broken for experiment
Bad loading.As a result and analyze：When the dosage of silane coupling agent is not more than 3% (mass fraction), adhesive bond strength is with changing
Property agent dosage increase and increase；After the dosage of modifying agent is more than 3%, the bond strength of adhesive quickly reduces.In silane
When coupling agent dosage is not more than 3%, bond strength increases with coupling agent dosage and the reason for enhancing may is that depositing for coupling agent
The interface of waterglass adhesive and timber group is being improved, so as to improve bond strength；And when coupling agent dosage is higher,
Modified water glass is present with gel, is difficult to soak base material so as to cause adhesive, makes to cohere effect variation.：L# and 2# is compound to be changed
Property adhesive to cohere mass fraction of the ability in prodan little no more than changing before 3%, and with not plus prodan
Silane coupler modified waterglass bond strength it is suitable；After the mass fraction of prodan is more than 3%, adhesive
The ability of cohering is remarkably decreased.For prodan as the common crosslinking agent of waterglass, its addition should be able to make adhesive drying solid
Bulk strength after change increases.And experimental result is found, bond strength is contributed less in the addition of prodan, shows waterglass
Bond strength of the adhesive with plank base material in dry environment is mainly influenced by adhesive and timber interface interaction, adhesive
Destruction situation is also all that face is destroyed.By this-phenomenon can be with inference, the interface interaction of such adhesive and timber is to influence its drying
The key factor of environment bond strength.After the mass fraction of prodan is more than 3%, under the bond strength of adhesive starts
Drop, this may be too fast with composite adhesive gel, and it is related to the wettability of timber to influence adhesive.Under adhesive wettability
After drop, bond strength is adversely affected.
Case study on implementation 4：
Plank is made by GB/T14074.10-1993 and coheres sample (Bonding area 2.25cm2), is soaked in 25 DEG C of water of people, observation
Plank usually time and using its as evaluation adhesive water resistance foundation.As a result and analyze：KH-792 and KH-550 silane is even
Join the addition of agent, the water resistance of adhesive is made slightly to improve, and modifying agent mass fraction is bigger, water resisting time is longer, but overall
Water resisting time is shorter, and requirement is not achieved.After modifying agent mass fraction is more than 2%, water resisting time has more apparent increase；And
From herein 2.2, when modifying agent mass fraction is more than 3%, bond strength can decline, this is because lower quality fraction silane
Coupling agent modified dose of addition can improve the interface interaction of adhesive and matrix；And when modifying agent mass fraction is higher, it can draw
The partial cross-linked of adhesive body is played, although adhesive can be caused to be reduced with matrix wetability, adhesive body can be made
Water resistance increases.It follows that with this condition, the water resistance of adhesive is mainly influenced by adhesive body is water-soluble.Institute
The water resistance of adhesive is improved to introduce the crosslinking agent prodan modification of waterglass herein.The addition of prodan can improve
The water resistance of waterglass adhesive, and with the increase of prodan mass fraction, adhesive water resisting time is also extended.In fluorine
When sodium metasilicate mass fraction is not more than 3%, adhesive water resisting time increases very fast；When prodan mass fraction be more than 3% it
Afterwards, the amplification of adhesive water resisting time substantially slows down.When prodan mass fraction is 3%, 1# composite adhesives and 2# are answered
The water resisting time for closing adhesive has respectively reached 13h and 11.5h, although still not ideal, can meet wooden in conventional environment
The requirement of material adhesive.The sample for observing degumming finds that the destruction of adhesive still falls within the water-soluble destruction of body, the timber table of degumming
Face, which is still sticked, more adhesive.
Claims (5)
1. a kind of modified water glass based Wood Adhesives, it is as follows to prepare raw material：Sodium silicate (modulus 3.0, mass fraction 40%),
Industrial goods；N-p (aminoethyl) -7- aminopropyl trimethoxysilanes (KH-792), industrial goods, purity 97% (mass fraction)；3-
Aminopropyltriethoxywerene werene (KH-550), purity 97% (mass fraction)；Prodan is analyzed pure (AR)；Pine straight burr
Plate, by GB/T14074.10-1993《Wood adhesive and its resin method of inspection wood gluing strength detection method》It is made
The examination material of 5mlTl thickness.
2. modified water glass based Wood Adhesives according to claim 1, it is characterized in that apparatus for preparation is as follows：Electronic universal
(pulling force) testing machine (range 0~1000N, precision 1N), Shenzhen City Xinsansi Metering Technology Co., Ltd；Electronic balance is (maximum
Weigh 100g, precision 0.1rag), Mei Teletuo benefits；Vernier caliper (precision 0.02rnm), Shanghai measurer factory.
3. modified water glass based Wood Adhesives according to claim 1, it is characterized in that silane coupler modified sodium silicate
The preparation method of adhesive is as follows：Under rapid mixing conditions, N-J3- is slowly added dropwise in equipped with 100g sodium silicate beakers
(aminoethyl)-r aminopropyl trimethoxysilanes (KH-792) or 3-aminopropyltriethoxysilane (KH-550), are added dropwise to complete
Afterwards, continue to stir 5min so that system is uniformly mixed, and obtains silane coupler modified sodium silicate adhesive.
4. modified water glass based Wood Adhesives according to claim 1, it is characterized in that composite modified waterglass adhesive
Preparation method is as follows：It is as follows：The silane coupler modified sodium silicate adhesives of 50g are placed in beaker, by fluorine silicon
Sour sodium is milled into fine-powdered, adds in beaker, and stirring makes waterglass adhesive be uniformly mixed with prodan powder, obtains compound
Modified water glass adhesive.
5. modified water glass based Wood Adhesives according to claim 1, it is characterized in that choosing addition mass fraction in preparing
For the modification adhesive of 3% KH-792, (being denoted as the composite modified gluing agent of 1#) is modified into-step addition prodan；Selection adds
Add the modification adhesive for the KH-550 that mass fraction is 3%, into-step addition prodan modification（It is denoted as the composite modified gluings of 2#
Agent）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037989.9A CN108084891A (en) | 2016-11-23 | 2016-11-23 | A kind of modified water glass based Wood Adhesives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037989.9A CN108084891A (en) | 2016-11-23 | 2016-11-23 | A kind of modified water glass based Wood Adhesives |
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| Publication Number | Publication Date |
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| CN108084891A true CN108084891A (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611037989.9A Pending CN108084891A (en) | 2016-11-23 | 2016-11-23 | A kind of modified water glass based Wood Adhesives |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292931A (en) * | 2021-05-28 | 2021-08-24 | 中建材创新科技研究院有限公司 | Adhesive and preparation and application thereof |
| CN115572575A (en) * | 2022-10-26 | 2023-01-06 | 合肥科天水性科技有限责任公司 | Environment-friendly water-based wood adhesive and preparation method thereof |
| CN116285447A (en) * | 2023-02-17 | 2023-06-23 | 江西恒大高新技术股份有限公司 | High-temperature wear-resistant corrosion-resistant microcrystalline ceramic coating and preparation method thereof |
-
2016
- 2016-11-23 CN CN201611037989.9A patent/CN108084891A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292931A (en) * | 2021-05-28 | 2021-08-24 | 中建材创新科技研究院有限公司 | Adhesive and preparation and application thereof |
| WO2022247153A1 (en) * | 2021-05-28 | 2022-12-01 | 中建材创新科技研究院有限公司 | Adhesive, preparation therefor and application thereof |
| CN115572575A (en) * | 2022-10-26 | 2023-01-06 | 合肥科天水性科技有限责任公司 | Environment-friendly water-based wood adhesive and preparation method thereof |
| CN116285447A (en) * | 2023-02-17 | 2023-06-23 | 江西恒大高新技术股份有限公司 | High-temperature wear-resistant corrosion-resistant microcrystalline ceramic coating and preparation method thereof |
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Application publication date: 20180529 |