CN1554722A - Nano environment protection type adhesive - Google Patents
Nano environment protection type adhesive Download PDFInfo
- Publication number
- CN1554722A CN1554722A CNA2003101116670A CN200310111667A CN1554722A CN 1554722 A CN1554722 A CN 1554722A CN A2003101116670 A CNA2003101116670 A CN A2003101116670A CN 200310111667 A CN200310111667 A CN 200310111667A CN 1554722 A CN1554722 A CN 1554722A
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- China
- Prior art keywords
- nano
- starch
- urea
- glue
- environment protection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The nano environment protecting adhesive has the main components of oxidized starch, esterified starth, NaOH, manoic, urea resin and nano level CaCO3, and is prepared through gelatinization, grafting and nano level CaCO3 processing. It has powerful adhesion, adjustable curing period, very low free formaldehyde content, no harm to human body and no environmental pollution and may be used widely in producing veneer.
Description
Technical Field
The invention relates to a wood adhesive, in particular to a nano environment-friendly adhesive mainly based on modified natural starch.
Background
In the wood processing industry, a large number of animal glue, plant glue and synthetic urea-formaldehyde resin glue are mainly used, the animal glue and the plant glue can not bear the action of harsh environmental conditions generally, so the animal glue and the plant glue are gradually replaced by the synthetic urea-formaldehyde resin glue, the bonding strength of the urea-formaldehyde resin glue is high, the weather resistance is good, 2.5 tons of the animal glue can be replaced by each ton of the urea-formaldehyde resin glue, but the free formaldehyde content in the urea-formaldehyde resin glue is high, the human health is seriously harmed, the indoor environment is polluted, the use of the urea-formaldehyde resin glue is limited along with the improvement of the environmental awareness of people, and people are trying to research and develop a new wood adhesive for replacing the.
Disclosure of Invention
The invention aims to provide a nano environment-friendly adhesive which takes modified natural starch as a main body and is obtained by organic synthesis with nano materials, and can completely replace urea-formaldehyde resin adhesive.
The invention is realized by the following main raw materials: oxidized starch, esterified starch, 15-30% of NaOH, cassava starch, urea gum powder and nano-grade CaCO3The synthesis process comprises the following steps:
the invention has strong adhesive force, long and short curing time, ultralow free formaldehyde content, no harm to human body after use, conforms to international and domestic environmental protection standards, and is widely used for producing adhesives of plywood.
Detailed Description
Adding 400 modified starch into 1000ml of water, stirring, gelatinizing with 20% NaOH for 40min, adding 80g of cassava starch, stirring uniformly, adding 100g of urea glue powder, reacting for 30min, adding 100g of nano-grade CaCO3And reacting for 3 hours, stopping the reaction, discharging and packaging.
Adding 300 modified starch into 1000ml of water, stirring, gelatinizing with 15% NaOH for 40min, adding 40g of cassava starch, stirring uniformly, adding 100g of urea glue powder, reacting for 30min, adding 100g of nano-grade CaCO3And reacting for 3 hours, stopping the reaction, discharging and packaging.
Method for implementing the third method, 500 modified starch is put into 1000ml of waterStirring, gelatinizing with 30% NaOH for 40min, adding 100g cassava starch, stirring, adding 100g urea glue powder, reacting for 30min, adding 100g CaCO3And reacting for 3 hours, stopping the reaction, discharging and packaging.
Claims (1)
1. The nano environment-friendly adhesive is characterized by mainly comprising the following raw materials of oxidized starch, esterified starch, 15-30% of NaOH, tapioca starch, urea glue powder and nano CaCO3The synthetic process route is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101116670A CN1554722A (en) | 2003-12-24 | 2003-12-24 | Nano environment protection type adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101116670A CN1554722A (en) | 2003-12-24 | 2003-12-24 | Nano environment protection type adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1554722A true CN1554722A (en) | 2004-12-15 |
Family
ID=34336256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101116670A Pending CN1554722A (en) | 2003-12-24 | 2003-12-24 | Nano environment protection type adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1554722A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838939A (en) * | 2012-09-12 | 2012-12-26 | 广东金万得胶粘剂有限公司 | Modified water-base nano binder |
-
2003
- 2003-12-24 CN CNA2003101116670A patent/CN1554722A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838939A (en) * | 2012-09-12 | 2012-12-26 | 广东金万得胶粘剂有限公司 | Modified water-base nano binder |
| CN102838939B (en) * | 2012-09-12 | 2013-09-04 | 广东金万得胶粘剂有限公司 | Modified water-base nano binder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |