CN102086361B - High-efficiency extender for environmentally-friendly urea formaldehyde resin, and preparation and use thereof - Google Patents
High-efficiency extender for environmentally-friendly urea formaldehyde resin, and preparation and use thereof Download PDFInfo
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- CN102086361B CN102086361B CN 201010219786 CN201010219786A CN102086361B CN 102086361 B CN102086361 B CN 102086361B CN 201010219786 CN201010219786 CN 201010219786 CN 201010219786 A CN201010219786 A CN 201010219786A CN 102086361 B CN102086361 B CN 102086361B
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- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 66
- 229920001807 Urea-formaldehyde Polymers 0.000 title claims abstract description 56
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 235000013312 flour Nutrition 0.000 claims abstract description 25
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 29
- 239000012763 reinforcing filler Substances 0.000 claims description 24
- 239000003463 adsorbent Substances 0.000 claims description 23
- 240000003183 Manihot esculenta Species 0.000 claims description 13
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 13
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 13
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 13
- 229920002472 Starch Polymers 0.000 claims description 13
- 235000019698 starch Nutrition 0.000 claims description 13
- 240000006394 Sorghum bicolor Species 0.000 claims description 11
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 11
- 210000000582 semen Anatomy 0.000 claims description 11
- 239000002023 wood Substances 0.000 claims description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 239000005995 Aluminium silicate Substances 0.000 claims description 8
- 235000012211 aluminium silicate Nutrition 0.000 claims description 8
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- -1 polyoxyethylene Polymers 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 239000011120 plywood Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 238000005470 impregnation Methods 0.000 description 11
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 10
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 10
- 238000010298 pulverizing process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 5
- 239000004141 Sodium laurylsulphate Substances 0.000 description 5
- 235000019256 formaldehyde Nutrition 0.000 description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000136 polysorbate Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 3
- 244000166124 Eucalyptus globulus Species 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
Abstract
The invention relates to a high-efficiency extender for environmentally-friendly urea formaldehyde resin, and preparation and use thereof. The high-efficiency extender comprises the following components: filler, organic reinforced filler, emulsifier and moisture absorbent. The preparation method of the high-efficiency extender is simple and convenient to use, the high-efficiency extender can be added in the synthesis process of urea formaldehyde resin and adhesive mixing mainly for sealing hydrophilic groups in urea formaldehyde resin, increasing the toughness and wettability of reinforced urea formaldehyde resin and promoting the water in the urea formaldehyde resin to evaporate. The high-efficiency extender can effectively solve the problem of low prepressing performance which is causedwhen high water content single plates are pressed to form plywood, and can obviously improve the water resistance of the plywood. Compared with the conventional plywood pressed after adhesive mixing by using flour, the plywood pressed after the high-efficiency extender disclosed by the invention is added into the urea formaldehyde resin according to an added amount of 30 to 35 weight percent has the advantages that: the adhesive consumption is reduced by 20 to 30 percent; and the comprehensive cost of each ton of artificial plates is saved by 30 to 50 yuan.
Description
Technical field
The present invention relates to the efficient extender of a kind of urea-formaldehyde resin, particularly the efficient extender of a kind of environment-friendly urea-formaldehyde resin the invention still further relates to the wood adhesive and their application in the preparation glued board thereof that contain this efficient extender.Belong to the wood adhesive additive agent field.
Background technology
Since the reform and opening-up, Forest Industry in China develops rapidly, and industry of artificial boards is a dark horse, and has become the Important Economic growth point of forest product industry.2009, China's wood-based plate ultimate production reached 11353.36 ten thousand steres, increased by 20.65% than 2008, and in the face of the impact of world crisis, wood-based plate output still keeps steady-state growth.China's industry of artificial boards is the industry of tackiness agent consumption maximum, estimates that the consumption of China's tackiness agent in 2010 will reach ten thousand tons of 480-500, and wherein urea-formaldehyde resin will occupy the 60-70% of industry of artificial boards glue consumption with its cost advantage.
Glued board is owing to its excellent property, being convenient to processing, moderate and kept the characteristics such as natural wood vein and quality, and the green grass or young crops that always is subject to people is paid attention to, and is that exploitation is the earliest and the traditional product that Chang Sheng does not wane in the wood-base fibre and particle panel material.2008, China's glued board output was 3540.86 ten thousand steres, had accounted for about 40% of wood-based plate ultimate production.And urea-formaldehyde resin adhesive accounts for more than 80% of glued board glue consumption, mainly is that its raw material is sufficient, cheap, is that cost is minimum in the synthetic resins.
In China, the technology of urea-formaldehyde resin production and use is relatively backward, and the technology upgrading of production unit and product and transformation are extremely urgent.Urea-formaldehyde resin is owing to being subject to the restriction of its package stability, and general viscosity is all smaller, with the time need to add extender and increase viscosity, improve the solids content of glue, reduce seep through and resin produces when solidifying internal stress.The kind of extender is a lot, and various countries, area select corresponding material to make extender according to the resources advantage of this area.Flour is as traditional extender, and moderate cost is most widely used.But its wettability is relatively poor, with urea-formaldehyde resin mixing process in, easily conglomeration forms " doughball ", greatly reduces the flowability of glue, thereby has reduced the service efficiency of urea-formaldehyde resin.Inorganic reinforcing filler such as chalk soil powder, wilkinite etc., although also can be used in separately in the modulation of urea-formaldehyde resin, adds DeGrain when less, adds when larger cost too high.In order to improve the service efficiency of urea-formaldehyde resin, study high efficiency efficient extender and have profound significance.
Summary of the invention
In order to solve the defective that exists in the prior art, the invention provides a kind of efficient extender and its preparation method and application.
The present invention solves these defectives by the following technical programs:
A kind of efficient extender comprises following component: weighting agent, inorganic reinforcing filler, emulsifying agent and moisture adsorbent.
Wherein, the weight part of each component is: weighting agent 40-70 part, inorganic reinforcing filler 20-40 part, emulsifying agent 5-10 part, moisture adsorbent 5-20 part.
Preferably, the weight part of each component is: 50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Described weighting agent is by a kind of in tree bark powder, bean powder, Tapioca Starch, sorghum flour and the Semen Maydis powder or their compositions of mixtures.
Wherein, the weight part of each component of described weighting agent is: tree bark powder 30-50 part, bean powder 20-40 part, Tapioca Starch 10-30 part, sorghum flour 5-15 part, Semen Maydis powder 5-15 part.
Preferably, the weight part of each component of described weighting agent is: 40 parts of tree bark powder, 30 parts of bean powderes, 15 parts of Tapioca Starchs, 10 parts of sorghum flours, 5 parts of Semen Maydis powder.
Described inorganic reinforcing filler is selected from a kind of in kaolin, talcum powder, wilkinite and the diatomite or their mixture.
Described emulsifying agent is selected from a kind of among tween T-85, sodium stearate, sodium lauryl sulphate, polyoxyethylene carboxylate SG-10 and the fatty alcohol-polyoxyethylene ether O-50 or their mixture.
Described moisture adsorbent is selected from a kind of in salt, urea, calcium chloride and the magnesium chloride or their mixture.
Efficient extender of the present invention adopts ordinary method and prepares, and specifically may further comprise the steps:
(1) takes by weighing each component according to described weight part;
(2) will mix after each component pulverizing, and get final product.
Wherein, described pulverizing is that each component is crushed to particle diameter is between the 50-200 micron.
The present invention also provides the application of described efficient extender, and described application is to use it for the preparation glued board, preferably uses it for high-moisture percentage veneer compacting glued board.
Wherein, described water ratio is 14-18% by weight.
The present invention also provides the wood adhesive that contains described efficient extender.
Efficient extender preparation method of the present invention is simple, easy to use, can in the urea-formaldehyde resin building-up process, add, also can when impregnation, add, the problem of the precompressed poor performance that causes when the high-moisture percentage veneer is suppressed glued board can be effectively solved, the water resistance of glued board can be obviously strengthened.The wood adhesive that contains the efficient extender of the present invention, ring texture is more in its molecule, and unstable group quantity is few, and curing speed is fast and abundant.
Embodiment
Describe the present invention in detail below by embodiment, it should be understood that these embodiment only are used for the purpose of illustration, do not consist of any restriction to scope of the present invention.It will be understood by those skilled in the art that and do not departing under spirit of the present invention and the periphery and can make amendment or replace the details of technical solution of the present invention and form, but these modifications or replace all fall within the scope of protection of the present invention.
Efficient extender of the present invention comprises following component: weighting agent, inorganic reinforcing filler, emulsifying agent and moisture adsorbent.
Wherein, the weight part of each component is: weighting agent 40-70 part, inorganic reinforcing filler 20-40 part, emulsifying agent 5-10 part, moisture adsorbent 5-20 part.
Preferably, the weight part of each component is: 50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Described weighting agent is by a kind of in tree bark powder, bean powder, Tapioca Starch, sorghum flour and the Semen Maydis powder or their compositions of mixtures.
Wherein, the weight part of each component of described weighting agent is: tree bark powder 30-50 part, bean powder 20-40 part, Tapioca Starch 10-30 part, sorghum flour 5-15 part, Semen Maydis powder 5-15 part.
Preferably, the weight part of each component of described weighting agent is: 40 parts of tree bark powder, 30 parts of bean powderes, 15 parts of Tapioca Starchs, 10 parts of sorghum flours, 5 parts of Semen Maydis powder.
Described inorganic reinforcing filler is selected from a kind of in kaolin, talcum powder, wilkinite and the diatomite or their mixture.
Described emulsifying agent is selected from a kind of among tween T-85, sodium stearate, sodium lauryl sulphate, polyoxyethylene carboxylate SG-10 and the fatty alcohol-polyoxyethylene ether O-50 or their mixture.
Described moisture adsorbent is selected from a kind of in salt, urea, calcium chloride and the magnesium chloride or their mixture.
Efficient extender of the present invention adopts ordinary method and prepares, specifically:
(1) takes by weighing each component according to described weight part;
(2) will mix after each component pulverizing, and get final product.
Wherein, described pulverizing is that each component is crushed to particle diameter is between the 50-200 micron.
Can with efficient extender of the present invention for the preparation of glued board, preferably use it for high-moisture percentage veneer compacting glued board.Wherein, described water ratio is 14-18% by weight.
The application method of the efficient extender of the present invention is:
The of the present invention efficient extender that when the urea-formaldehyde resin impregnation, adds 60-70% (take the weight of urea-formaldehyde resin adhesive (butt) for basic), then mix and can use, used impregnation Apparatus and operation method and prior art are identical.
Efficient extender of the present invention uses when the impregnation of high-moisture percentage veneer compacting glued board, mainly plays the hydrophilic radical in the sealing urea-formaldehyde resin, strengthens toughness and the wettability of urea-formaldehyde resin, and can promote the effect of moisture evaporation in the urea-formaldehyde resin.
Efficient extender of the present invention is added in the urea-formaldehyde resin, has increased solids content, viscosity and the tack of glue, improved the wettability of glue, improved the perviousness of glue in timber.The dry ingredients of urging in the efficient extender of the present invention can make urea-formaldehyde resin in the process of being heating and curing, and rapid evaporation goes out moisture, thereby fully solidifies.Efficient extender of the present invention adds in the urea-formaldehyde resin without any detrimentally affect, has all reached the national standard requirement with the properties of the glued board of high-moisture percentage veneer compacting.
Embodiment 1
1, carry out material preparation by following weight proportion:
50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 40 parts, 30 parts of bean powderes, 15 parts of Tapioca Starchs, 10 parts of sorghum flours, 5 parts of Semen Maydis powder.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
20 parts of kaolin, 10 parts of wilkinites.
Emulsifying agent selected fatty acid polyoxyethylene ester SG-10.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in calcium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 1.
Embodiment 2
1, carry out material preparation by following weight proportion:
50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 40 parts, 20 parts of bean powderes, 30 parts of Tapioca Starchs, 10 parts of Semen Maydis powder.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
15 parts of kaolin, 15 parts of wilkinites.
Emulsifying agent is selected tween T-85.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in calcium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 2.
Embodiment 3
1, carry out material preparation by following weight proportion:
40 parts of weighting agents, 20 parts of inorganic reinforcing fillers, 5 parts of 5 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 50 parts, 20 parts of bean powderes, 20 parts of Tapioca Starchs, 10 parts of sorghum flours.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
15 parts of talcum powder, 15 parts in diatomite.
Emulsifying agent is selected sodium stearate.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in magnesium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 3.
Embodiment 4
1, carry out material preparation by following weight proportion:
70 parts of weighting agents, 40 parts of inorganic reinforcing fillers, 20 parts of 10 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 40 parts, 30 parts of bean powderes, 20 parts of Tapioca Starchs, 10 parts of Semen Maydis powder.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
15 parts of kaolin, 15 parts in diatomite.
Emulsifying agent is selected sodium lauryl sulphate.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in magnesium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 4.
Embodiment 5
1, carry out material preparation by following weight proportion:
50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 30 parts, 40 parts of bean powderes, 20 parts of Tapioca Starchs, 10 parts of sorghum flours.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
15 parts of kaolin, 15 parts in diatomite.
Emulsifying agent is selected sodium lauryl sulphate.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in magnesium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 5.
Embodiment 6
1, carry out material preparation by following weight proportion:
50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents.
Wherein weighting agent is undertaken by following weight proportion:
Tree bark powder: 40 parts, 40 parts of bean powderes, 10 parts of Tapioca Starchs, 5 parts of sorghum flours, 5 parts of Semen Maydis powder.
Wherein inorganic reinforcing filler is undertaken by following proportioning:
15 parts of kaolin, 15 parts in diatomite.
Emulsifying agent is selected sodium lauryl sulphate.
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in calcium chloride.
2, the raw material pulverizing that said ratio is good is mixed to the 50-200 micron, obtains efficient extender 6.
Comparative Examples 1
Use the general impregnation equipment in plywood factory, adding the flour stage, the efficient extender 1 that embodiment 1 is obtained adds in the urea-formaldehyde resin by 60% and 70% of urea-formaldehyde resin (butt) weight respectively, and measure the viscosity of two kinds of urea-formaldehyde resins of gained, and add 50% with not adding the efficient extender of the present invention (take urea-formaldehyde resin (butt) weight for basic) viscosity of the urea-formaldehyde resin of flour compares.The result is as shown in table 1.
Urea-formaldehyde resin technical indicator before and after the efficient extender of table 1 adds
Comparative Examples 2
Use the general impregnation equipment in plywood factory, adding the flour stage, the efficient extender 2 that embodiment 2 is obtained adds in the urea-formaldehyde resin by 60% and 70% of urea-formaldehyde resin (butt) weight respectively, and measure the viscosity of two kinds of urea-formaldehyde resins of gained, and add 50% with not adding the efficient extender of the present invention (take urea-formaldehyde resin (butt) weight for basic) viscosity of the urea-formaldehyde resin of flour compares.The result is as shown in table 2.
Urea-formaldehyde resin technical indicator before and after the efficient extender of table 2 adds
Can be found out by table 1 and table 2, the viscosity of having added the urea-formaldehyde resin of efficient extender of the present invention has obvious reduction, is conducive to strengthen toughness and the wettability of urea-formaldehyde resin.
Comparative Examples 3
The urea-formaldehyde resin of scheme 1-3 in the Comparative Examples 1 is carried out applying glue, group plate, precompressed and hot pressing according to the thick 5 layers of normal production technique of glued board of 1.5mm.Wherein, veneer is 5 years production fast-growing eucalyptus veneers, water ratio 14-18%; Hot pressing technique is: pressure 1.0-1.2MPa, and temperature is 105-115 ℃, the time is 8min.To only add flour and do not add the efficient extender of the present invention and compare with urea-formaldehyde resin ton plate glue consumption and the cost savings amount of adding the efficient extender of the present invention according to 60% and 70% of urea-formaldehyde resin dry weight respectively, and according to the II class glued board gummed intensity of stipulating among the GB/T17657-1999 " Test methods of evaluating the properties of woodbased panels and surface decorated woodbased panels " and the detection of burst size of methanal testing method, the result is as shown in table 3.
The effect contrast of the efficient extender of table 3 the present invention
Annotate:
1Resin added is the urea-formaldehyde resin usage quantity of every square metre of glued board slab single face;
2Saving cost calculates with every cubic metre of glued board comprehensive cost.
As can be seen from Table 3, the efficient extender of the present invention can not increase under the appointed condition, according to the original production technique of glued board, alternative flour carries out impregnation, can reduce the 20-30% of comprehensive resin added after urea-formaldehyde resin and the flour impregnation, effectively reduce cost and burst size of methanal, improved simultaneously the physicochemical property of product.
Comparative Examples 4
The urea-formaldehyde resin of scheme 1-3 in the Comparative Examples 2 is carried out applying glue, group plate, precompressed and hot pressing according to the thick 5 layers of normal production technique of glued board of 1.5mm.Wherein, veneer is 5 years production fast-growing eucalyptus veneers, water ratio 16-20%; Hot pressing technique is: pressure 1.0-1.2MPa, and temperature is 105-115 ℃, the time is 8min.To only add flour and do not add the efficient extender of the present invention and compare with urea-formaldehyde resin ton plate glue consumption and the cost savings amount of adding efficient extender according to 60% and 70% of urea-formaldehyde resin dry weight respectively, and according to the II class glued board gummed intensity of stipulating among the GB/T17657-1999 " Test methods of evaluating the properties of woodbased panels and surface decorated woodbased panels " and the detection of burst size of methanal testing method, the result is as shown in table 3.
The effect contrast of the efficient extender of table 4 the present invention
Annotate:
1Resin added is the urea-formaldehyde resin usage quantity of every square metre of glued board slab single face;
2Saving cost calculates with every cubic metre of glued board comprehensive cost.
As can be seen from Table 4, the efficient extender of the present invention can not increase under the appointed condition, according to the original production technique of glued board, alternative flour carries out impregnation, can reduce the 20-30% of comprehensive resin added after urea-formaldehyde resin and the flour impregnation, effectively reduce cost and burst size of methanal, improved simultaneously the physicochemical property of product.When preparation gummed water ratio surpasses 16% veneer, shortened significantly the squeeze time of glued board, improved production efficiency.
Compacting glued board after joining in the urea-formaldehyde resin according to the addition of 30-35wt% efficient extender of the present invention, 20-30% has been lacked in its glue depletion with the glued board of suppressing after the flour impregnation than existing, and wood-based plate comprehensive cost per ton can be saved 30-50 unit.
Efficient extender of the present invention adds in the urea-formaldehyde resin without any detrimentally affect, has all reached the national standard requirement with the properties of the glued board of high-moisture percentage veneer compacting.
The advantage of the efficient extender of the present invention is:
(1) the efficient extender of the present invention is applied in the plywood production, need not increase extra equipment and operation, and is simple to operate, easy to use, do not affect plywood production efficient.
(2) adopt the glue of efficient extender modulation of the present invention can glue together the high-moisture percentage veneer that water ratio is 14-18%, obviously shortened the squeeze time of glued board, the properties of the glued board that is pressed into has all reached the national standard requirement.
(3) adopt efficient extender of the present invention can significantly reduce the consumption glue amount that plywood production is used urea-formaldehyde resin, compare existing urea-formaldehyde resin adhesive and (add long patent flour, and do not add efficient extender of the present invention), can make the few 20-30% of every xanthan depletion, wood-based plate comprehensive cost per ton is saved 30-50 unit.
(4) adopt efficient extender of the present invention can reduce the burst size of methanal of glued board, reduced environmental pollution, be conducive to HUMAN HEALTH.
Claims (6)
1. efficient extender of environment-friendly urea-formaldehyde resin, comprise following component: weighting agent, inorganic reinforcing filler, emulsifying agent and moisture adsorbent, it is characterized in that, the weight part of each component is: 50 parts of weighting agents, 30 parts of inorganic reinforcing fillers, 15 parts of 5 parts of emulsifying agents and moisture adsorbents;
Wherein weighting agent is undertaken by following weight proportion:
40 parts of tree bark powder, 30 parts of bean powderes, 15 parts of Tapioca Starchs, 10 parts of sorghum flours, 5 parts of Semen Maydis powder;
Wherein inorganic reinforcing filler is undertaken by following proportioning:
20 parts of kaolin, 10 parts of wilkinites;
Emulsifying agent selected fatty acid polyoxyethylene ester SG-10;
Moisture adsorbent is undertaken by following proportioning:
7 parts of salt, 3 parts in urea, 5 parts in calcium chloride.
2. a method for preparing efficient extender claimed in claim 1 is characterized in that, may further comprise the steps:
(1) takes by weighing each component according to described weight part;
(2) each component being crushed to particle diameter is to mix behind the 50-200 micron, and get final product.
3. the application of efficient extender claimed in claim 1 is characterized in that, described application is to use it for the preparation glued board.
4. the application of efficient extender claimed in claim 3 is characterized in that, described application is to use it for preparation high-moisture percentage veneer compacting glued board.
5. application according to claim 4 is characterized in that, described water ratio is 14-18% by weight.
6. the wood adhesive that contains efficient extender claimed in claim 1.
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| CN103589366A (en) * | 2013-08-01 | 2014-02-19 | 安徽省安邦矿物有限公司 | Compound extender for urea-formaldehyde resin |
| CN104263277A (en) * | 2014-10-20 | 2015-01-07 | 常熟市鑫磊木业制造厂 | Filler for adhesive in wood industry |
| CN104312490B (en) * | 2014-10-23 | 2017-07-07 | 新沂市超华木业有限公司 | A kind of thickener composition of Adhesive for plywood and preparation method thereof |
| CN106363760B (en) * | 2016-08-29 | 2018-10-09 | 广西横县新威林板业有限公司 | The method that particieboard is produced using Vermins-proof mildew-proof composite urea formaldehyde resin |
| CN106346587A (en) * | 2016-08-29 | 2017-01-25 | 南宁市创锦胶合板有限责任公司 | Method for producing cabinet board with anti-insect and anti-mold composite urea-formaldehyde resin |
| CN106313205B (en) * | 2016-08-29 | 2018-10-09 | 广西横县新威林板业有限公司 | The method that particieboard is produced using moisture-proof composite urea formaldehyde resin |
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| CN106272831A (en) * | 2016-08-29 | 2017-01-04 | 南宁市创锦胶合板有限责任公司 | Use the method that anticorrosion composite urea formaldehyde resin produces cupboard board |
| CN106313260A (en) * | 2016-08-29 | 2017-01-11 | 南宁市林润木业有限公司 | Method for producing cabinet board by adopting damp-proof composite urea resin |
| CN110862784A (en) * | 2019-10-14 | 2020-03-06 | 安徽省安邦矿物有限公司 | Composite extender for urea-formaldehyde resin |
| CN116463078A (en) * | 2023-04-17 | 2023-07-21 | 山东众远新材料有限公司 | Artificial board trialdehyde adhesive filler with antibacterial function and application thereof |
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