CN111662657A - Long-activation-period slow-drying plate splicing adhesive and preparation method thereof - Google Patents
Long-activation-period slow-drying plate splicing adhesive and preparation method thereof Download PDFInfo
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- CN111662657A CN111662657A CN202010627957.4A CN202010627957A CN111662657A CN 111662657 A CN111662657 A CN 111662657A CN 202010627957 A CN202010627957 A CN 202010627957A CN 111662657 A CN111662657 A CN 111662657A
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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
- C09J131/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
- C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09J131/04—Homopolymers or copolymers of vinyl acetate
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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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a long-activation-period slow-drying plate splicing adhesive and a preparation method thereof, wherein the plate splicing adhesive consists of a main adhesive and a curing agent; the main rubber comprises the following raw materials in parts by weight: 20-30 parts of VAE, 3.6-5.0 parts of PVA, 3.6-4.2 parts of starch, 22-28 parts of filler, 0.15-0.4 part of dispersant, 0.5-1.5 parts of plasticizer, 2-5 parts of water-retaining agent, 0.1-0.2 part of defoaming agent, 0.1-0.2 part of preservative and 40-48 parts of water. The curing agent is general isocyanate. The plate alignment adhesive has an activation period of more than 40min in an environment with the temperature of 35 ℃ and the RH of 60 percent; the surface drying time is longer than 10min, and the activating period and the surface drying time are long.
Description
Technical Field
The invention belongs to the technical field of gluing, and particularly relates to a long-activation-period slow-drying plate splicing glue and a preparation method thereof.
Background
The wood-splicing glue is an adhesive used for splicing solid wood products, and is suitable for splicing and tooth-jointing solid wood furniture, solid wood plates, laminated wood, wood artware and wood products, assembling and bonding tables, chairs, doors, windows and stairs and the like. The plate alignment adhesive consists of a main agent and a curing agent, wherein the main agent is milky polymer emulsion, and the curing agent is generally light brown isocyanate. According to different process requirements, the performance of the plate alignment adhesive is also emphasized, and different types of plate alignment adhesives are formed, such as high-frequency plate alignment adhesive, assembly plate alignment adhesive, laminated material plate alignment adhesive and the like.
Along with the diversification of market demands, the shapes and specifications of wood products are also diversified, and the performance of the plate-splicing adhesive is changed along with the change of the process. If the amount of the parts is small, the time from the mixing of the glue is long until the glue is used up, but the glue cannot be used up before the glue is used up, so that the activation period of the glue for splicing is required to be long by users. For example, when the ground is spliced by using a flat foot, the time of a complete process is long, namely the process rhythm is slow, the time from the mixing of the prepared glue to the use up is long, and the user also requires that the activation period of the plate splicing glue is long. The activation period refers to the period of time from the mixing of the main rubber and the curing agent to the failure of the main rubber, and the user usually judges the length of the activation period according to the foaming degree and the fluidity. After compounding, the activation period is considered to be long if the bubbling is slow or the bubbling degree is low and the fluidity is present (the use is still possible), and the activation period is considered to be short if the bubbling is fast or the bubbling degree is high and the fluidity is poor (the use is difficult). The plate alignment adhesive with short activation period can not meet the process requirements of users. Some processes such as manual gluing large splicing plates have large gluing area and long gluing process time, and users need to dry the splicing plates slowly. For example, in the case of dining table edge covering, 20-30 edge covering battens are manually coated with glue and then exposed in the air until the edge covering battens are used up one by one, and the splicing glue coated on the edge covering battens cannot be dried, otherwise, the splicing failure is caused, so that a user also needs to dry the splicing glue slowly. The slow-drying plate alignment adhesive is formed by coating a main adhesive and a curing agent on a base material after mixing, and the drying time of the adhesive layer is relatively long. The surface drying time is generally used to judge whether the wood glue is dried slowly. Particularly in summer, the market has strong demand for the slow-dry plate alignment adhesive. Therefore, the development of the long-activation-period slow-dry panel glue is not easy.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a long-activation-period slow-drying plate alignment adhesive and a preparation method thereof. The plate alignment adhesive prepared by the invention has the characteristics of long activation period and long surface drying time.
The purpose of the invention adopts the following technical scheme: a long-activation-period slow-drying plate alignment adhesive is composed of a main adhesive and a curing agent; the main rubber comprises the following raw materials in parts by weight: 20-30 parts of VAE, 3.6-5.0 parts of PVA, 3.6-4.2 parts of starch, 22-28 parts of filler, 0.15-0.4 part of dispersant, 0.5-1.5 parts of plasticizer, 2-5 parts of water-retaining agent, 0.1-0.2 part of defoaming agent, 0.1-0.2 part of preservative and 40-48 parts of water. The curing agent is general isocyanate.
Further, the VAE has a solids content of 55 wt%.
Further, the PVA is in a type of 088-50 or a type of 088-20 or mixed with the PVA in any proportion.
Further, the starch is corn starch.
Further, the filler is ultrafine calcium carbonate.
Further, the plasticizer is trioctyl/decyl trimellitate or DBP.
Further, the water-retaining agent is one or two of magnesium sulfate and calcium chloride which are mixed according to any proportion.
The invention also provides a preparation method of the long-activation-period slow-drying plate alignment adhesive, which is characterized in that PVA and starch are gelatinized and dissolved for 1.5 hours at 88-90 ℃, then the temperature is reduced to below 50 ℃, and the PVA and the starch are stirred and mixed with VAE, a filler, a dispersing agent, a plasticizer, a water-retaining agent, a defoaming agent and a preservative uniformly to obtain the main adhesive. When in use, the main rubber and the curing agent are mixed according to the weight ratio of 100: 10-12, and mixing uniformly to obtain the plate alignment adhesive.
Compared with the prior art, the invention has the beneficial effects that: (1) the gelatinized starch is adopted to replace part of PVA, so that the reaction speed of the main glue and the curing agent can be slowed down, the activation period is prolonged, and a slow drying effect is achieved; (2) the activation period can be prolonged by adopting VAE as the plate alignment adhesive emulsion; (3) and the surface drying time of the plate alignment adhesive is prolonged by adopting the water-retaining agent so as to achieve the effect of slow drying. The long-activation-period slow-drying plate splicing adhesive provided by the invention meets the strong demands of summer markets (south China and southeast Asia) on plate splicing adhesives with long activation period and long surface drying time.
Detailed Description
In order to make the purpose and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The reagent of the invention: VAE, a dispersing agent, a defoaming agent and a preservative adopt the conventional reagents in the field; wherein the VAE adopts CAS No.24937-78-8, the dispersant can adopt polycarboxylate sodium salt dispersant, the defoamer can be mineral oil defoamer, and the preservative can be Kathon preservative.
Example 1
(1) 20 parts by weight of CAS No.24937-78-8, 55 wt% of VAE with solid content and 5.0 parts by weight of PVA which comprises 3 parts by weight of 088-50 and 2 parts by weight of 088-20, 4.0 parts by weight of corn starch, 28 parts by weight of superfine calcium carbonate, 0.4 part by weight of polycarboxylic acid sodium salt dispersing agent, 1.5 parts by weight of trioctyl/decyl trimellitate plasticizer, 3.0 parts by weight of calcium chloride water retention agent, 0.2 part by weight of mineral oil defoaming agent and 0.15 part by weight of Kathon preservative are respectively weighed.
(2) The PVA and the corn starch are gelatinized and dissolved for 1.5 hours at 88 ℃ by using 48 parts by weight of water, and then cooled to 45 ℃, and are stirred and mixed uniformly with VAE, superfine calcium carbonate, a polycarboxylic acid sodium salt dispersing agent, a trioctyl/decyl trimellitate plasticizer, a calcium chloride water-retaining agent, a mineral oil defoaming agent and a kasong preservative to obtain the main glue. When in use, the prepared main glue and the universal isocyanate plate alignment glue curing agent are mixed according to the weight ratio of 100:10, and uniformly mixing to obtain the plate alignment adhesive.
Example 2
(1) 24 parts by weight of CAS No.24937-78-8, 55 wt% of VAE with solid content, 4.0 parts by weight of PVA088-50, 3.6 parts by weight of corn starch, 25 parts by weight of ultrafine calcium carbonate, 0.3 part by weight of sodium polycarboxylate dispersant, 1.0 part by weight of DBP plasticizer, 4.0 parts by weight of magnesium sulfate water retention agent, 0.15 part by weight of mineral oil type defoaming agent and 0.1 part by weight of Kathon preservative are respectively weighed.
(2) Pasting and dissolving PVA and corn starch at 90 ℃ for 1.5 hours by using 45 parts by weight of water, cooling to 48 ℃, and uniformly stirring and mixing with VAE, superfine calcium carbonate, a polycarboxylate sodium salt dispersing agent, a DBP plasticizer, a magnesium sulfate water-retaining agent, a mineral oil defoaming agent and a kasong preservative to obtain the main glue. When in use, the prepared main glue and the universal isocyanate plate alignment glue curing agent are mixed according to the weight ratio of 100:12, and uniformly mixing to obtain the plate alignment adhesive.
Example 3
(1) 28 parts by weight of CAS No.24937-78-8, 55 wt% of VAE with solid content, 3.6 parts by weight of PVA088-50, 4.2 parts by weight of corn starch, 22 parts by weight of superfine calcium carbonate, 0.15 part by weight of sodium polycarboxylate dispersant, 0.5 part by weight of DBP plasticizer, 5.0 parts by weight of calcium chloride water retention agent, 0.1 part by weight of mineral oil type defoaming agent and 0.2 part by weight of Kathon preservative are respectively weighed.
(2) And (3) gelatinizing and dissolving PVA and corn starch at 90 ℃ for 1.5 hours by using 42 parts by weight of water, cooling to 45 ℃, and uniformly stirring and mixing with VAE, superfine calcium carbonate, a polycarboxylate sodium salt dispersing agent, a DBP plasticizer, a calcium chloride water-retaining agent, a mineral oil defoaming agent and a kasong preservative to obtain the main glue. When in use, the prepared main glue and the universal isocyanate plate alignment glue curing agent are mixed according to the weight ratio of 100:10, and uniformly mixing to obtain the plate alignment adhesive.
Example 4
(1) 30 parts by weight of CAS No.24937-78-8, 55 wt% of VAE with solid content, 3.6 parts by weight of PVA088-20, 4.2 parts by weight of corn starch, 24 parts by weight of superfine calcium carbonate, 0.4 part by weight of sodium polycarboxylate dispersant, 0.5 part by weight of DBP plasticizer, 5.0 parts by weight of calcium chloride water retention agent, 0.1 part by weight of mineral oil type defoaming agent and 0.2 part by weight of Kathon preservative are respectively weighed.
(2) 40 parts by weight of water is used for pasting and dissolving PVA and corn starch at 88 ℃ for 1.5 hours, after the temperature is reduced to 45 ℃, the PVA and the corn starch are uniformly stirred and mixed with VAE, superfine calcium carbonate, a polycarboxylate sodium salt dispersing agent, a DBP plasticizer, a calcium chloride water-retaining agent, a mineral oil defoaming agent and a kasong preservative to obtain the main glue. When in use, the prepared main glue and the universal isocyanate plate alignment glue curing agent are mixed according to the weight ratio of 100:12, and uniformly mixing to obtain the plate alignment adhesive.
The plate adhesives obtained in examples 1-4 and the plate adhesives on the market were placed in a constant temperature and humidity test chamber at 35 ℃/60% RH for the activation period test and the surface drying test (the base material was wood chips, the coating weight was 200 g/m)2) In addition, dry strength tests were made with beech under room temperature conditions. The ratio of the main rubber to the curing agent in market comparison 1 is 100:10, and the ratio of the main rubber to the curing agent in market comparison 2 is 100: 12. The results of comparative tests under the same conditions are shown in table 1 below.
TABLE 1 comparison of the properties of examples 1-4 and of commercially available laminating adhesives
The comparative test results show that: the plate alignment adhesives of examples 1-4 and comparative examples 1-2 of the present invention have dry strength greater than 10MPa, but the plate alignment adhesives of examples 1-4 have longer activation period and slower surface drying speed, because the gelatinized starch is used to replace part of PVA, the VAE emulsion is used to replace polyvinyl acetate emulsion, and the water-retaining agent is added, so that the requirements of customers on glue usage of plate alignment in summer are completely satisfied. And the plate alignment adhesive of examples 3 and 4 has better activation period and slow drying performance due to the increase of the using amount of gelatinized starch and the water-retaining agent.
Claims (8)
1. A long-activation-period slow-drying plate splicing adhesive is characterized by comprising a main adhesive and a curing agent; the main rubber comprises the following raw materials in parts by weight: 20-30 parts of VAE, 3.6-5.0 parts of PVA, 3.6-4.2 parts of starch, 22-28 parts of filler, 0.15-0.4 part of dispersant, 0.5-1.5 parts of plasticizer, 2-5 parts of water-retaining agent, 0.1-0.2 part of defoaming agent, 0.1-0.2 part of preservative and 40-48 parts of water. The curing agent is general isocyanate.
2. The long shelf life slow drying wood veneer glue according to claim 1, wherein the VAE has a solids content of 55 wt%.
3. The long shelf life slow drying jigsaw of claim 1, wherein the PVA is selected from the group consisting of types 088-50, 088-20, and combinations thereof, in any ratio.
4. The long shelf life slow drying jigsaw of claim 1, wherein the starch is corn starch.
5. The long shelf life slow drying jigsaw of claim 1, wherein the filler is ultra fine calcium carbonate.
6. The long shelf life slow drying jigsaw of claim 1, wherein the plasticizer is trioctyl/decyl trimellitate or DBP.
7. The long-life slow-dry jigsaw puzzle according to claim 1, wherein the water retention agent is one or a mixture of magnesium sulfate and calcium chloride in any proportion.
8. The preparation method of the long-activation-period slow-drying plate alignment adhesive as claimed in claim 1, wherein PVA and starch are gelatinized and dissolved for 1.5 hours at 88-90 ℃, then the temperature is reduced to below 50 ℃, and the gelatinized and dissolved PVA and starch are uniformly mixed with VAE, a filler, a dispersing agent, a plasticizer, a water-retaining agent, a defoaming agent and a preservative to obtain the main adhesive. When in use, the main rubber and the curing agent are mixed according to the weight ratio of 100: 10-12, and mixing uniformly to obtain the plate alignment adhesive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627957.4A CN111662657A (en) | 2020-07-01 | 2020-07-01 | Long-activation-period slow-drying plate splicing adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010627957.4A CN111662657A (en) | 2020-07-01 | 2020-07-01 | Long-activation-period slow-drying plate splicing adhesive and preparation method thereof |
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| CN111662657A true CN111662657A (en) | 2020-09-15 |
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| CN202010627957.4A Pending CN111662657A (en) | 2020-07-01 | 2020-07-01 | Long-activation-period slow-drying plate splicing adhesive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778941A (en) * | 2021-01-20 | 2021-05-11 | 华威粘结材料（上海）股份有限公司 | Long-open-time bi-component plate alignment adhesive composition capable of being placed for long time and preparation method thereof |
| CN115322728A (en) * | 2022-09-14 | 2022-11-11 | 宁波锋成先进能源材料研究院有限公司 | High-strength boiling-water-resistant bi-component plate splicing adhesive as well as preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5490876A (en) * | 1993-11-18 | 1996-02-13 | Reichhold Chemicals, Inc. | Starch-based adhesive |
| CN102234493A (en) * | 2010-04-21 | 2011-11-09 | 王钱生 | Plant composite adhesive for man-made board and preparation method thereof |
| CN104845561A (en) * | 2015-05-06 | 2015-08-19 | 赣州市金东门化工有限公司 | Wood board jointing glue with superstrong adhesion force |
-
2020
- 2020-07-01 CN CN202010627957.4A patent/CN111662657A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5490876A (en) * | 1993-11-18 | 1996-02-13 | Reichhold Chemicals, Inc. | Starch-based adhesive |
| CN102234493A (en) * | 2010-04-21 | 2011-11-09 | 王钱生 | Plant composite adhesive for man-made board and preparation method thereof |
| CN104845561A (en) * | 2015-05-06 | 2015-08-19 | 赣州市金东门化工有限公司 | Wood board jointing glue with superstrong adhesion force |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778941A (en) * | 2021-01-20 | 2021-05-11 | 华威粘结材料（上海）股份有限公司 | Long-open-time bi-component plate alignment adhesive composition capable of being placed for long time and preparation method thereof |
| CN115322728A (en) * | 2022-09-14 | 2022-11-11 | 宁波锋成先进能源材料研究院有限公司 | High-strength boiling-water-resistant bi-component plate splicing adhesive as well as preparation method and application thereof |
| CN115322728B (en) * | 2022-09-14 | 2024-04-12 | 宁波锋成绿能环保科技有限公司 | High-strength boiling water-resistant bi-component jigsaw puzzle glue and preparation method and application thereof |
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Address after: 317022 Shuiyang village, Yanjiang Town, Linhai City, Taizhou City, Zhejiang Province Applicant after: Dingli New Material Technology Co.,Ltd. Applicant after: SICHUAN DINGLI RUBBER INDUSTRY CO.,LTD. Applicant after: Shandong Dingli New Material Technology Co.,Ltd. Address before: 317022 Shuiyang village, Yanjiang Town, Linhai City, Taizhou City, Zhejiang Province Applicant before: DINGLI NEW MATERIAL TECHNOLOGY CO.,LTD. Applicant before: SICHUAN DINGLI RUBBER INDUSTRY CO.,LTD. Applicant before: Shandong Dingli New Material Technology Co.,Ltd. |
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Application publication date: 20200915 |