CN102321439A - Additive agent of urea-formaldehyde resin adhesive and preparation method thereof - Google Patents
Additive agent of urea-formaldehyde resin adhesive and preparation method thereof Download PDFInfo
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- CN102321439A CN102321439A CN 201110225987 CN201110225987A CN102321439A CN 102321439 A CN102321439 A CN 102321439A CN 201110225987 CN201110225987 CN 201110225987 CN 201110225987 A CN201110225987 A CN 201110225987A CN 102321439 A CN102321439 A CN 102321439A
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Abstract
The invention provides an additive agent of urea-formaldehyde resin adhesive and a preparation method thereof. The additive agent of the urea-formaldehyde resin adhesive is prepared from the following components in parts by weight: 100 parts of modified starch, 1-5 parts of polymer compound, 300-500 parts of desulfurization gypsum, and 0.1-2 parts of swelling agent which are mixed uniformly to obtain the additive agent. The additive agent of the urea-formaldehyde resin can replace flour to be added into urea-formaldehyde resin, the adhesive is endowed with favorable prepressing when artificial plates are prepared, the high production efficiency of the artificial plates is ensured, simultaneously the formaldehyde emission of the artificial plates can be reduced effectively, the problem of volume reduction in the process of preparing the urea-formaldehyde resin adhesive is solved, and the physical mechanical property of the artificial plates is improved.
Description
Technical field
The present invention relates to a kind of additive of tackiness agent, particularly a kind of wood-based plate is with additive of urea-formaldehyde resin adhesive and preparation method thereof.
Background technology
Over 30 years, the timber industry of China has obtained fast development.2009, China's wood-based plate ultimate production 1.1546 billion cubic meters, wood veneer output 4451.24 ten thousand steres, core-board 1478.71 ten thousand steres.Wood-based plate ultimate production, wood veneer output, core-board output all rank first in the world.Only wood veneer, the annual tackiness agent that consumes of core-board are up to 6,000,000 tons (50% solids content).In wood veneer, core-board production process, the flour that often will add gross weight 20-30% in the tackiness agent is as filler, to improve tackiness agent precompressed performance; Enhance productivity; Reduce the tackiness agent consumption, reduce production costs, prevent seep through and starved; Improve the tackiness agent utilising efficiency, improve glue-line ageing-resistant performance etc.To consume more than 100 ten thousand tons of whole meal flours for this reason every year, amount to more than 20 hundred million yuan of Renminbi, cause great foodstuff waste, be unfavorable for the Sustainable development of wood-based plate industry.
Simultaneously; Because what generally adopt in the Wood-based Panel Production is that formaldehyde is tackiness agent; Particularly use urea-formaldehyde resin adhesive in a large number; Therefore causing wood-based plate and goods (furniture, timber floor, indoor wooden decorative material etc.) thereof to exist formaldehyde and discharge problem, is the main source that formaldehyde pollutes in the room air pollution.
The raising day by day of Along with people's health perception, indoor environment consciousness, quality of life consciousness, artificial board formaldehyde discharges the polluted air, the problem that impairs one's health that cause and more and more receives people's attention.Formaldehyde has hormesis to eye, mucous membrane and respiratory tract, can cause chronic respiratory tract disease, allergic rhinitis, lower immune function etc.; Being considered to the potential carcinogenic substance, possibly be the inducement of rhinocarcinoma, laryngocarcinoma, skin carcinoma.According to statistics, China reaches more than ten ten thousand by the death toll that exceeds the quata that room air pollution causes every year, and outpatient service people number of times more than 20 ten thousand exceeds the quata.Solve artificial board formaldehyde release problem and arrived instant stage.
The SO of coal-burning power plant
2Quantity discharged accounts for national SO
250% of total emission volumn.Desulfurated plaster (FGD) is the treatment S O of thermal power plant
2After the industry byproduct that obtains.At present, China's desulfurated plaster output is very huge, and YO surpasses 1,000 ten thousand t, solves the problem of utilizing of desulfurated plaster, has important economy and society benefit.The porousness of gypsum is expected to reduce the burst size of methanal that urea-formaldehyde resin glueds joint goods as filler.
In the prior art, the report that desulfurated plaster is applied in preparation cement gel stick aspect is arranged.For example there is one Chinese patent application number to be " a kind of method of utilizing incineration of refuse flyash to prepare fast gravity die cement-based adhesive " for the denomination of invention of 200910052851.X; It is that desulfurated plaster is applied in cement and the mortar that the name that " nonmetalliferous ore " magazine the 31st volume the 2nd periodical is stepped on is called " the compound glued wood property of desulfurated plaster/flyash can be studied " etc.But also do not see it is applied in the relevant report in the middle of the adhesion agent for artificial board.
At present, the method for reduction artificial board formaldehyde burst size mainly contains: 1) adopt low mol ratio modified urea-formaldehyde resin adhesive; 2) adopt other environmental-protection type adhesives; 3) add formaldehyde-trapping agent at wood-based plate in urea-formaldehyde resin adhesive; 4) wood-based plate is carried out aftertreatment.But these technological methods all exist certain defective.As, 1) though adopt low mol ratio modified urea-formaldehyde resin adhesive can effectively reduce the burst size of methanal of wood-based panel product, the bonding strength of product also often reduces, and can not meet the demands; Prolong set time, and production efficiency reduces; 2) adopt other environmental-protection type adhesives, like the isocyanates tackiness agent, because tackiness agent costs an arm and a leg, cause the production cost of wood-based plate often to increase considerably, enterprise and user are difficult to accept; 3) add formaldehyde-trapping agent at wood-based plate in urea-formaldehyde resin adhesive,, often reduce the bonding strength of wood-based plate simultaneously though can effectively reduce the free formaldehyde in artificial plate burst size; Simultaneously; General formaldehyde-trapping agent price often is higher than urea-formaldehyde resin adhesive far away; Its adding has improved product cost, has reduced product competitiveness, and for example the FC-5 formaldehyde-trapping agent price of the big deer development Co., Ltd. of Japan production is 50000 yuan/ton; If in glue, add 1%-2%, urea-formaldehyde resin cost then per ton will improve 500～1000 yuan; 4) wood-based plate is carried out aftertreatment; It like publication number the ME that discloses a kind of E1/E0 level environment friendly artificial board in the application for a patent for invention of CN1526528; Adopt the ammonia vacuum method; Publication number is to disclose a kind of treatment unit that reduces artificial board formaldehyde burst size in the utility model patent of CN2394770, and is bigger but finishing apparatus is often invested.
One Chinese patent application number is the additive that 200810115888.8 patented claim discloses a kind of urea-formaldehyde resin adhesive; This additive contains wood powder, water-soluble high-molecular compound and inorganic mineral salt; Though the urea-formaldehyde resin additive that this patent of invention provides has reduced the wood veneer burst size of methanal; But when replacing flour to carry out the urea-formaldehyde resin impregnation with this additive, resultant urea-formaldehyde resin adhesive is compared with adding flour, and volume reduces to some extent.This is unfavorable to the rate of utilization that improves urea-formaldehyde resin.
Summary of the invention
The objective of the invention is problem, the additive of a kind of wood-based plate with urea-formaldehyde resin adhesive is provided to above prior art existence.This additive is that a kind of treated starch and desulfurated plaster are the material of main composition, and this additive can substitute flour and join in the urea-formaldehyde resin.Said additive is grouped into by the one-tenth of following weight part meter:
100 parts of treated starches;
Macromolecular compound 1-5 part;
Swelling agent 0.1-2.0 part;
Desulfurated plaster 300-500 part.
Preferably, said additive is grouped into by the one-tenth of following weight part meter:
100 parts of treated starches;
Macromolecular compound 2-4 part;
Swelling agent 0.5-1.5 part
Desulfurated plaster 350-450 part.
Said treated starch is that starch pasting is made, and can adopt existing ordinary method to make.Specifically be that starch is dispersed in the water among the present invention, be heated to 60-80 ℃, form even pasty state solution, dehydrate then, obtain treated starch.The treated starch water ratio that obtains is 4-10%.
Said treated starch makes by being selected from W-Gum, wheat starch, tapioca(flour), the acorn starch one or more.
Said treated starch be fineness at 100-500 purpose powder, its objective is the cold-water solution and the thickening effectiveness that increase treated starch.
The water ratio of said treated starch is 4-10%.
Said desulfurated plaster is that fineness is the 200-600 order, to guarantee enough thickening effectivenesss.
Said macromolecular compound is selected from one or both in SEPIGEL 305, the Z 150PH.
Said swelling agent is selected from that X 2073, sodium lauryl sulphate, dioctyl sodium sulfosuccinate, Sodium glycocholate, benzalkonium chloride, Morpan BB, polysorbate, glycerin fatty acid ester, lipid acid sorb are smooth, in the polysorbate one or more.
Said macromolecular compound under certain condition can with formolite reaction, reduce artificial board formaldehyde burst size.
Several kinds of being not limited to enumerate of said swelling agent, every can be in use, can be through stirring foaming effect, the material that increases the urea-formaldehyde resin adhesive volume all is applicable to the present invention.
Another object of the present invention provides the preparation method of said additive.
It comprises the steps:
1) starch is dispersed in the water, is heated to 60-80 ℃, form even pasty state solution, dehydrate then, obtain treated starch;
2) treated starch and desulfurated plaster, macromolecular compound raw materials mix are even.
A purpose more of the present invention provides a kind of urea-formaldehyde resin adhesive that contains said additive.
Said urea-formaldehyde resin adhesive contains urea-formaldehyde resin and said additive, and the mass ratio of said urea-formaldehyde resin and additive is 100: 20-30.
Said urea-formaldehyde resin adhesive also contains solidifying agent; Said solidifying agent is selected from a kind of in ammonium chloride, ammonium sulfate, the ammonium formiate, preferably sulfuric acid ammonium, ammonium chloride; The mass ratio of said urea-formaldehyde resin and said solidifying agent is 100: 0.2-2.0.
Urea-formaldehyde resin can be various common urea-formaldehyde resin and the modified urea-formaldehyde resin that factory generally adopts.
Urea-formaldehyde resin used in the present invention is that the mol ratio of urea and formaldehyde is 1: 1.1 a urea-formaldehyde resin.Its performance index are following:
Additive provided by the invention also is applicable to resol and melamine formaldehyde resin.
The present invention also provides a kind of preparation method of said urea-formaldehyde resin adhesive, and it is urea-formaldehyde resin, additive, solidifying agent to be mixed make.
The advantage applies of urea-formaldehyde resin additive of the present invention is in the following areas:
1, additive of the present invention and urea-formaldehyde resin adhesive have good mixing property;
2, the present invention makes up treated starch, macromolecular compound, desulfurated plaster, swelling agent according to certain proportioning; The additive of the urea-formaldehyde resin adhesive for preparing; Use it for the preparation urea-formaldehyde resin adhesive; Solved when the preparation urea-formaldehyde resin adhesive, when additive is mixed with urea-formaldehyde resin, the problem that volume reduces.
3, additive of the present invention can give urea-formaldehyde resin good precompressed property, guarantees wood veneer and core-board production efficiency;
4, additive of the present invention can be in hot pressing of artificial board and formaldehyde generation chemical reaction, fundamentally reduces artificial board formaldehyde burst size preferably, guarantees the wood-based plate physical and mechanical property;
5, additive of the present invention mixes use with urea-formaldehyde resin adhesive, and the wood-based plate mechanical property of manufacturing not only can not reduce, and increases;
6, therefore the manufacturing cost of additive of the present invention itself has guaranteed that the manufacturing cost of wood-based plate can not improve, and has decreased well below flour;
7, additive main raw material wide material sources of the present invention are cheap, have important economy and society benefit as the substitute products of flour.
Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Among the embodiment, the urea-formaldehyde resin performance index of employing are following:
The performance index of the urea-formaldehyde resin additive that the embodiment of the invention prepares such as table 1 are not.
Table 1
| Outward appearance | Tap density g/cm3 | 5% pH value of water solution | Water ratio % |
| The white meal | 0.8-1.6 | 5.0-7.0 | 3.0-8.0 |
The capability and performance index of the urea-formaldehyde resin adhesive of embodiment of the invention preparation such as table 2 are not.
Table 2
The preparation of embodiment 1 urea-formaldehyde resin adhesive
1) the 10kg wheat starch be dispersed in be heated to 60 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 4%, fineness is 100 orders.
2) with the treated starch that obtains in the step 1, SEPIGEL 305, X 2073, desulfurated plaster according to 100: 1: 0.1: 300 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 200 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium chloride=100: 20: 1 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 2 urea-formaldehyde resin adhesives
1) the 10kg wheat starch be dispersed in be heated to 60 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 6%, fineness is 200 orders.
2) with the treated starch that obtains in the step 1, SEPIGEL 305, sodium lauryl sulphate, desulfurated plaster according to 100: 5: 2: 500 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 300 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium chloride=100: 30: 2 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 3 urea-formaldehyde resin adhesives
1) the 10kg wheat starch be dispersed in be heated to 60 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 10%, fineness is 300 orders.
2) with the treated starch that obtains in the step 1, SEPIGEL 305, benzalkonium chloride, desulfurated plaster according to 100: 2: 1.5: 350 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 300 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium chloride=100: 30: 2 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 4 urea-formaldehyde resin adhesives
1) the 10kg wheat starch be dispersed in be heated to 60 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 6%, fineness is 300 orders.
2) with the treated starch that obtains in the step 1, SEPIGEL 305, polysorbate, desulfurated plaster according to 100: 4: 0.5: 450 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 300 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium chloride=100: 30: 0.2 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 5 urea-formaldehyde resin adhesives
1) the 10kg wheat starch be dispersed in be heated to 60 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 7%, fineness is 300 orders.
2) with the treated starch that obtains in the step 1, SEPIGEL 305, dioctyl sodium sulfosuccinate, desulfurated plaster according to 100: 3: 1: 400 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 600 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium chloride=100: 25: 0.6 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 6 urea-formaldehyde resin adhesives
1) 5kg W-Gum and 5kg acorn starch be dispersed in be heated to 70 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 4%, fineness is 500 orders.
2) with the treated starch that obtains in the step 1, Z 150PH, X 2073, desulfurated plaster according to 100: 3: 1.5: 400 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 300 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium sulfate=100: 25: 0.4 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 7 urea-formaldehyde resin adhesives
1) 5kg W-Gum and 5kg tapioca(flour) be dispersed in be heated to 70 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 5%, fineness is 300 orders.
2) with the treated starch that obtains in the step 1, Z 150PH, SEPIGEL 305, sodium lauryl sulphate, desulfurated plaster according to 100: 1: 2: 1: 400 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 600 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium sulfate=100: 30: 0.6 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The preparation of embodiment 8 urea-formaldehyde resin adhesives
1) 5kg W-Gum and 5kg tapioca(flour) be dispersed in be heated to 70 ℃ in the 100kg water, form even pasty state solution, then in 105 ℃ dry 2 hours down, obtain treated starch, the water ratio of the treated starch that obtains is 7%, fineness is 500 orders.
2) with the modification wheat starch that obtains in the step 1, Z 150PH, sodium lauryl sulphate, polysorbate, desulfurated plaster according to 100: 3: 0.5: 0.5: 400 weight proportion is mixing in mixing machine, obtains urea-formaldehyde resin additive.The fineness of said desulfurated plaster is 200 orders.
3) with the urea-formaldehyde resin additive that makes according to urea-formaldehyde resin: urea-formaldehyde resin additive: the weight proportion of ammonium sulfate=100: 30: 1 mixes, and obtains urea-formaldehyde resin adhesive of the present invention.
The performance of the urea-formaldehyde resin additive that obtains embodiment 1-8 step 2) is as shown in table 3 below.
Table 3
The capability and performance of the urea-formaldehyde resin adhesive of embodiment of the invention 1-8 preparation such as table 4 are not.
Table 4
Comparative example 1
Employing flour is additive, urea-formaldehyde resin: flour: ammonium chloride=100: 20: 1 mixes, as comparative example 1.(unit is kg)
Comparative example 2
Employing flour is additive, urea-formaldehyde resin: flour: ammonium chloride=100: 30: 1 mixes, as comparative example 2.(unit is kg)
The capability and performance of the urea-formaldehyde resin adhesive of embodiment of the invention comparative example 1-2 preparation is as shown in table 5.
Table 5 flour is made the urea-formaldehyde resin adhesive capability and performance index of filler
Experimental example
Adopt the urea-formaldehyde resin of embodiment of the invention 1-7 method preparation and the common urea-formaldehyde resin of comparative example 1-2 to make three layers of wood veneer respectively, preparation technology parameter is following:
Board using poplar board: water ratio 5～8%; Thick 1.6mm;
Tackiness agent: adopt the urea-formaldehyde resin adhesive of embodiment of the invention 1-7 and the urea-formaldehyde resin adhesive of comparative example 1-2.
Prepare wood veneer by following normal process:
Applying glue: adopt manual gluing mode, central layer (interlayer) double spread, Amount of spread is 260g/m
2
Ageing mode and time: closed ageing, ageing 20 minutes.
Preload pressure and time: pressure 1.0MPa, precompressed 60 minutes.
Hot pressing: hot pressing pressure 1.2MPa, hot pressing temperature is 120 ℃, hot pressing time is 60s/mm.
The performance test results of three layers of wood veneer making by above-mentioned technology is as shown in table 11, wherein by GB/T17657-1999 " wood-based plate and face artificial board physicochemical property experimental technique " detection method the wood veneer product of production is carried out Performance Detection.
Table 6 tackiness agent rate of expansion tackiness agent precompressed property reaches
The burst size of methanal and the bonding strength of glueing joint wood veneer
* explanation: " rate of expansion contrast " is when preparing tackiness agent, the volume contrast after adding additive in the urea-formaldehyde resin and adding flour, and the volume behind the interpolation flour is by 100%.
Experimental result shows, adopts additive of the present invention to be used for urea-formaldehyde resin adhesive as filler and prepares wood veneer, and tackiness agent precompressed property, volume are suitable with flour, and the burst size of methanal of wood veneer descends to some extent, and rate of descent reaches more than 20%.
Simultaneously; By it can also be seen that in the table 6; When adopting the filler for preparing through the inventive method to be used as urea-formaldehyde resin additive; The bonding strength of glueing joint goods does not only descend, and increases on the contrary, and this is different from general merely for reducing the common urea-formaldehyde resin additive that artificial board formaldehyde burst size makes that its mechanical property also reduces simultaneously.
Adopting one Chinese patent application number is that the rate of expansion of the urea-formaldehyde resin adhesive that makes of disclosed embodiment 10 prepares in 200810115888.8 the application for a patent for invention urea-formaldehyde resin sticker and the embodiment among the present invention and comparative example compares as shown in table 7.Comparative result for the additive of the urea-formaldehyde resin adhesive of the present invention preparation when the preparation urea-formaldehyde resin adhesive, solved and in urea-formaldehyde resin, added the problem that volume reduces behind the additive.The tackiness agent that embodiment 10 prepares for embodiment 10 in application number 200810115888.8 application documents in the table.
The contrast of table 7 tackiness agent rate of expansion
The * explanation: the rate of expansion contrast is for when preparing tackiness agent; Additive that adds the present invention's preparation in the urea-formaldehyde resin and the volume contrast of adding behind the additive that embodiment 10 provides in application number 200810115888.8 application documents, comparative example 1 is for adding volume behind the flour by 100% in the urea-formaldehyde resin.
Application number is that the concrete preparation method of 200810115888.8 disclosed embodiment 10 preparation urea formaldehyde resin adhesives is following:
1) get the raw materials ready according to following weight proportion:
Aqueous glycol solution (mass percent concentration 10%) 30kg
Poplar powder (100 order) 1000kg
2) wood powder is put into stirrer, aqueous glycol solution is evenly sprayed on wood powder, mix with spray gun.
3) wood powder that mixes and ethylene glycol mixture are placed baking oven, after 120 ℃ of temperature are reacted 2 hours down, wood powder and ethylene glycol mixture were carried out drying 2 hours under 105 ℃, making the modified wood powder water ratio is 5%.
4) exsiccant modified wood powder and Z 150PH, 100: 1: 100 by weight mixed of lime carbonate is even, obtain the additive of urea-formaldehyde resin adhesive.
5) preparation urea formaldehyde resin adhesive: the additive of the urea-formaldehyde resin adhesive that makes and the urea-formaldehyde resin weight proportion according to 20: 100 is mixed, obtain urea formaldehyde resin adhesive.
Adopt the above-mentioned urea formaldehyde resin adhesive that makes to make three layers of wood veneer, preparation technology parameter is following:
Board using poplar board: water ratio 5～8%; Thick 1.6mm;
Tackiness agent: adopt the above-mentioned urea formaldehyde resin adhesive that makes
Prepare wood veneer by following normal process:
Impregnation: urea formaldehyde resin adhesive and weight ammonium chloride part proportioning are in harmonious proportion evenly with 120: 1 ratio;
Applying glue: adopt manual gluing mode, central layer (interlayer) double spread, Amount of spread is 220～300g/m
2
Ageing mode and time: closed ageing, ageing 20 minutes.
Preload pressure and time: pressure 1.0MPa, precompressed 60 minutes.
Hot pressing: hot pressing pressure 1.2MPa, hot pressing temperature is 120 ℃, hot pressing time is 60s/mm.
In addition, the cost of additive of the present invention is about 1200 yuan/ton, and the long patent flour price is about 2000 yuan/ton.Application of Additives of the present invention is promoted, and when saving a large amount of flour, can effectively reduce the wood-based plate manufacturing cost.
Claims (10)
1. the additive of a urea-formaldehyde resin adhesive is characterized in that, said additive is grouped into by the one-tenth of following weight part meter:
100 parts of treated starches;
Macromolecular compound 1-5 part;
Swelling agent 0.1-2 part;
Desulfurated plaster 300-500 part.
2. the additive of urea-formaldehyde resin adhesive according to claim 1 is characterized in that, said additive is grouped into by the one-tenth of following weight part meter:
100 parts of treated starches;
Macromolecular compound 2-4 part;
Swelling agent 0.5-1.5 part;
Desulfurated plaster 350-450 part.
3. the additive of urea-formaldehyde resin adhesive according to claim 1 and 2 is characterized in that, said treated starch is the powder of fineness at 100-500.
4. want the additive of 1 or 2 described urea-formaldehyde resin adhesives according to right, it is characterized in that, said desulfurated plaster is that fineness is the 200-600 order.
5. the additive of urea-formaldehyde resin adhesive according to claim 1 and 2 is characterized in that, said macromolecular compound is selected from one or both in SEPIGEL 305, the Z 150PH.
6. the additive of urea-formaldehyde resin adhesive according to claim 1 and 2; It is characterized in that said swelling agent is selected from that X 2073, sodium lauryl sulphate, dioctyl sodium sulfosuccinate, Sodium glycocholate, benzalkonium chloride, Morpan BB, polysorbate, glycerin fatty acid ester, lipid acid sorb are smooth, in the polysorbate one or more.
7. a method for preparing the additive of each described urea-formaldehyde resin adhesive among the claim 1-6 is characterized in that it comprises the steps:
1) starch is dispersed in the water, is heated to 60-80 ℃, form even pasty state solution, dehydrate then, obtain treated starch;
2) treated starch and desulfurated plaster, macromolecular compound raw materials mix are even.
8. a urea-formaldehyde resin adhesive that contains each said additive among the claim 1-6 is characterized in that, said urea-formaldehyde resin adhesive contains urea-formaldehyde resin and said additive, and the mass ratio of said urea-formaldehyde resin and said additive is 100: 20-30.
9. urea-formaldehyde resin adhesive according to claim 8 is characterized in that it also contains solidifying agent; The mass ratio of said urea-formaldehyde resin and solidifying agent is 100: 0.2-2.0.
10. a preparation method who prepares claim 8 or 9 described urea-formaldehyde resin adhesives is characterized in that, it is urea-formaldehyde resin, additive, solidifying agent to be mixed make.
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| CN106479393A (en) * | 2016-11-09 | 2017-03-08 | 林添波 | Filler for wood adhesive |
| CN108901559A (en) * | 2018-07-23 | 2018-11-30 | 中国水利水电科学研究院 | A kind of coal field vegetation repair method |
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| CN105860877A (en) * | 2016-05-11 | 2016-08-17 | 广西银洲科技有限公司 | Addition agent for starch adhesive and preparation method and application method of addition agent for starch adhesive |
| CN106182316A (en) * | 2016-08-29 | 2016-12-07 | 广西横县新威林板业有限公司 | The method that full Eucalyptus leftover pieces produce fire-retardant oriented wood chipboard |
| CN106479393A (en) * | 2016-11-09 | 2017-03-08 | 林添波 | Filler for wood adhesive |
| CN106479393B (en) * | 2016-11-09 | 2018-07-24 | 林添波 | Filler for wood adhesive |
| CN108901559A (en) * | 2018-07-23 | 2018-11-30 | 中国水利水电科学研究院 | A kind of coal field vegetation repair method |
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