CN105524579A - Production method of urea-formaldehyde resin-epoxy resin adhesive - Google Patents
Production method of urea-formaldehyde resin-epoxy resin adhesive Download PDFInfo
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- CN105524579A CN105524579A CN201410575961.5A CN201410575961A CN105524579A CN 105524579 A CN105524579 A CN 105524579A CN 201410575961 A CN201410575961 A CN 201410575961A CN 105524579 A CN105524579 A CN 105524579A
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- urea
- formaldehyde resin
- epoxy resin
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Abstract
The invention discloses a production method of a urea-formaldehyde resin-epoxy resin adhesive and belongs to the field of chemical engineering. 60-62% of liquid urea-formaldehyde resin, 22-24% of polyvinyl alcohol, 6% of liquid epoxy resin, 2% of a polyurethane prepolymer, 2% of acetyl citrate, 5% of starch and 1% of aluminum hydroxide are mixed at a certain temperature to form the urea-formaldehyde resin-epoxy resin adhesive. The production method has simple processes and utilizes raw materials with abundant sources. Through compounding of urea-formaldehyde resin and epoxy resin, performances are good. The compound adhesive has the advantages of high bonding force to a material with high surface activity, high bonding strength, small shrinkage and good size stability.
Description
Technical field:
The invention belongs to chemical field, particularly relate to a kind of production method of urea-formaldehyde resin-epoxyn.
Background technology:
Urea-formaldehyde resin is the polymkeric substance that urea and formaldehyde reaction obtain, it is one of thermosetting resin developing comparatively morning, urea and formalin polycondensation can obtain linear urea aldehyde oligopolymer under the catalysis of acid or alkali, industrial with alkali as a catalyst, the reaction the first step generates one and dimethylolurea, then methylol and the further condensation of amino, obtain soluble resin.Urea-formaldehyde resin more easily solidifies, color of resin after solidification is translucent, and shape, hardness are high, oil resistant, weak acid resistant, weak base, anti-mildew, there are good insulativity and temperature tolerance, but weathering resistance and water tolerance poor, life-time service nondiscoloration, also nondiscoloration during thermoforming, urea-formaldehyde resin is the main binder of domestic and international timber industry, the bonding of sheet material, thick china, decorative panel for building can be made, be used widely due to series of advantages such as its bonding strength are high, quick solidifying, good operability, abundant raw material are easy to get; In order to improve the adhesive property of urea-formaldehyde resin adhesive further, the present invention uses epoxy resin and its composite, single epoxyn excellent performance, adaptability are extensive, bonding strength is high, highly versatile, be widely used in fields such as Aeronautics and Astronautics, automobile, machinery, building, chemical industry, light industry, electronics, electrical equipment and daily lifes, but its price is slightly high.Because epoxy resin and gas chromatography and inorganics have good consistency and reactivity, be easy to carry out the modifications such as copolymerization, crosslinked, blended, filling, to improve the performance of glue-line, therefore use a small amount of epoxy resin and urea-formaldehyde resin adhesive composite, greatly can improve the various performances of urea-formaldehyde resin adhesive, the advantage of gum blend stick is: the active high material of effects on surface has very strong bonding force, and Joint strength is very high, shrinking percentage is little, good stability of the dimension.
Summary of the invention:
The problem that the present invention mainly solves is to provide a kind of production method of urea-formaldehyde resin-epoxyn, and the raw material producing the use of this tackiness agent has by weight ratio: liquid urea-formaldehyde resin 60-62%, poly-enol 22-24%, liquid-state epoxy resin 6%, polyurethane prepolymer 2%, acetyl citrate 2%, starch 5%, aluminium hydroxide 1%.
The technical solution used in the present invention is:
(1) the liquid urea-formaldehyde resin of formula ratio and poly-enol are sent into chemical reaction kettle, temperature is progressively risen to 45-50 DEG C, starts agitator, the rotating speed of agitator is 25-30 rev/min, stirring reaction 0.4-0.6 hour;
(2) temperature is brought up to 55-60 DEG C, liquid-state epoxy resin, the polyurethane prepolymer of formula ratio is added while stirring in chemical reaction kettle, be cooled to normal temperature after stirring reaction 0.6-0.8 hour, add the acetyl citrate of formula ratio, starch and aluminium hydroxide, stir and get product.
Further technical scheme of the present invention is:
Temperature of reaction described in step (1) is 42.5 DEG C, and the reaction times is 0.5 hour.
Temperature of reaction described in step (2) is 57.5 DEG C, and the reaction times is 0.7 hour.
The invention has the beneficial effects as follows: the production method providing a kind of urea-formaldehyde resin-epoxyn, the method production technique is simple, abundant raw material source, product uses urea-formaldehyde resin and the composite rear performance of epoxy resin to improve, the advantage of gum blend stick is: the active high material of effects on surface has very strong bonding force, Joint strength is very high, and shrinking percentage is little, good stability of the dimension.
Embodiment:
Embodiment:
By account for total amount be 60% liquid urea-formaldehyde resin and account for total amount be 20% poly-enol send into chemical reaction kettle, temperature is progressively risen to 45 DEG C, starts agitator, the rotating speed of agitator is 25-30 rev/min, stirring reaction 0.6 hour; Temperature is brought up to 55 DEG C, add in chemical reaction kettle while stirring account for total amount be 8% liquid-state epoxy resin, account for the polyurethane prepolymer that total amount is 2%, stirring reaction was cooled to normal temperature after 0.8 hour, add account for total amount be 2% acetyl citrate, to account for total amount be the starch of 5% and account for the aluminium hydroxide that total amount is 1%, stir and get product.
Embodiment 2:
By account for total amount be 61% liquid urea-formaldehyde resin and account for total amount be 19% poly-enol send into chemical reaction kettle, temperature is progressively risen to 47.5 DEG C, starts agitator, the rotating speed of agitator is 25-30 rev/min, stirring reaction 0.4-0.6 hour; Temperature is brought up to 57.5 DEG C, add in chemical reaction kettle while stirring account for total amount be 8% liquid-state epoxy resin, account for the polyurethane prepolymer that total amount is 2%, stirring reaction was cooled to normal temperature after 0.7 hour, add account for total amount be 2% acetyl citrate, to account for total amount be the starch of 5% and account for the aluminium hydroxide that total amount is 1%, stir and get product.
Embodiment 3:
By account for total amount be 62% liquid urea-formaldehyde resin and account for total amount be 18% poly-enol send into chemical reaction kettle, temperature is progressively risen to 50 DEG C, starts agitator, the rotating speed of agitator is 25-30 rev/min, stirring reaction 0.4 hour; Temperature is brought up to 60 DEG C, add in chemical reaction kettle while stirring account for total amount be 8% liquid-state epoxy resin, account for the polyurethane prepolymer that total amount is 2%, stirring reaction was cooled to normal temperature after 0.6 hour, add account for total amount be 2% acetyl citrate, to account for total amount be the starch of 5% and account for the aluminium hydroxide that total amount is 1%, stir and get product.
Claims (3)
1. a production method for urea-formaldehyde resin-epoxyn, the raw materials by weight of use calculates and comprises: liquid urea-formaldehyde resin 60-62%, poly-enol 22-24%, liquid-state epoxy resin 6%, polyurethane prepolymer 2%, acetyl citrate 2%, starch 5%, aluminium hydroxide 1%; It is characterized in that:
(1) the liquid urea-formaldehyde resin of formula ratio and poly-enol are sent into chemical reaction kettle, temperature is progressively risen to 45-50 DEG C, starts agitator, the rotating speed of agitator is 25-30 rev/min, stirring reaction 0.4-0.6 hour;
(2) temperature is brought up to 55-60 DEG C, liquid-state epoxy resin, the polyurethane prepolymer of formula ratio is added while stirring in chemical reaction kettle, be cooled to normal temperature after stirring reaction 0.6-0.8 hour, add the acetyl citrate of formula ratio, starch and aluminium hydroxide, stir and get product.
2. the production method of a kind of urea-formaldehyde resin-epoxyn according to claim 1, it is characterized in that: the temperature of reaction described in step (1) is 42.5 DEG C, the reaction times is 0.5 hour.
3. the production method of a kind of urea-formaldehyde resin-epoxyn according to claim 1, it is characterized in that: the temperature of reaction described in step (2) is 57.5 DEG C, the reaction times is 0.7 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575961.5A CN105524579A (en) | 2014-10-26 | 2014-10-26 | Production method of urea-formaldehyde resin-epoxy resin adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575961.5A CN105524579A (en) | 2014-10-26 | 2014-10-26 | Production method of urea-formaldehyde resin-epoxy resin adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105524579A true CN105524579A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410575961.5A Pending CN105524579A (en) | 2014-10-26 | 2014-10-26 | Production method of urea-formaldehyde resin-epoxy resin adhesive |
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| CN (1) | CN105524579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609069A (en) * | 2018-12-20 | 2019-04-12 | 湖北康欣新材料科技有限责任公司 | One kind is for container bottom board bamboo mat bamboo curtain splint dipping new type resin adhesive |
-
2014
- 2014-10-26 CN CN201410575961.5A patent/CN105524579A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609069A (en) * | 2018-12-20 | 2019-04-12 | 湖北康欣新材料科技有限责任公司 | One kind is for container bottom board bamboo mat bamboo curtain splint dipping new type resin adhesive |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160427 |