CN117140670B - Production method of softened and anti-corrosion wicker branches - Google Patents
Production method of softened and anti-corrosion wicker branches Download PDFInfo
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- CN117140670B CN117140670B CN202311151261.9A CN202311151261A CN117140670B CN 117140670 B CN117140670 B CN 117140670B CN 202311151261 A CN202311151261 A CN 202311151261A CN 117140670 B CN117140670 B CN 117140670B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000011276 wood tar Substances 0.000 claims abstract description 49
- 241000753128 Periploca <moth> Species 0.000 claims abstract description 24
- 239000002966 varnish Substances 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- JNVCSEDACVAATK-UHFFFAOYSA-L [Ca+2].[S-]SSS[S-] Chemical compound [Ca+2].[S-]SSS[S-] JNVCSEDACVAATK-UHFFFAOYSA-L 0.000 claims abstract description 9
- 238000004132 cross linking Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims description 23
- 239000003755 preservative agent Substances 0.000 claims description 22
- 230000002335 preservative effect Effects 0.000 claims description 20
- 230000007797 corrosion Effects 0.000 claims description 17
- 241000124033 Salix Species 0.000 claims description 10
- 230000002421 anti-septic effect Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims 2
- 241000238661 Periplaneta Species 0.000 claims 1
- 241000238631 Hexapoda Species 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 9
- 239000011593 sulfur Substances 0.000 abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 7
- 241001406327 Periploca sepium Species 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005536 corrosion prevention Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 241000238876 Acari Species 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 239000002023 wood Substances 0.000 description 11
- 241000256602 Isoptera Species 0.000 description 10
- 235000013339 cereals Nutrition 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 239000005866 Lime sulphur Substances 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 241000607479 Yersinia pestis Species 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000011681 asexual reproduction Effects 0.000 description 1
- 238000013465 asexual reproduction Methods 0.000 description 1
- IPOKCKJONYRRHP-FMQUCBEESA-N balsalazide Chemical compound C1=CC(C(=O)NCCC(=O)O)=CC=C1\N=N\C1=CC=C(O)C(C(O)=O)=C1 IPOKCKJONYRRHP-FMQUCBEESA-N 0.000 description 1
- 229960004168 balsalazide Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- WFYPICNXBKQZGB-UHFFFAOYSA-N butenyne Chemical group C=CC#C WFYPICNXBKQZGB-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 235000020251 goat milk Nutrition 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J3/00—Peeling osier rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening or hardening of wood
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a production method of softening and corrosion-preventing wicker branches, belongs to the technical field of wicker processing, and can simply and conveniently soften and prevent the wicker branches. The impregnated wood tar and the wood tar contain a small amount of lime sulfur, so that the anti-corrosion performance and the flexibility can be improved. The film forming performance of the polydivinyl acetylene varnish coated on the surface is improved, the film forming time is prolonged, the operation time is abundant, the film forming quality is good, and the formation and the compaction of a coating film are facilitated. The wood tar has good softening effect, interacts with the components of the periploca forrestii Liu Jiaoliao, improves the softness of periploca forrestii and plays a role in softening. The lime sulfur has the effects of sterilizing, killing insects and mites through permeation, and can promote cross-linking of the periploca sepium by decomposing active sulfur generated by decomposition; the composite material has the dual functions of softening and corrosion prevention, is low in cost and wide in sources of raw materials for treatment, has the functions of insect resistance, mite resistance, corrosion prevention, softening and flexibility, and is natural and environment-friendly in treatment process.
Description
Technical Field
The invention belongs to the technical field of wicker processing, and particularly relates to a production method for softening and preventing corrosion of wicker branches.
Background
"Liu Ling is a pillar, which is prohibited from being eaten by people for a long time in the book of changes of wood meridian. "the insect damage to willow and other wood species is serious in some areas of the north where the current mothproof and antiseptic works. The willow branch is the main initial raw material of various willow artworks and appliances, and various household appliances or ornaments manufactured by using the willow branch as the raw material are light and attractive. For example, the sheepskin raft in the north is made by binding sheepskin air bag bolts with 48 willow fine sticks which are not only antiseptic but also flexible. Such as a gabion, a dustpan, etc. However, willow is easy to erode by insects and has poor corrosion resistance, which hinders the application of wicker. In 2008, wang Jinlin and the like disclose "fiber weaving plants such as periploca forrestii and reed and the like", and further confirm the utilization value of periploca forrestii as weaving material. At present, each large industrial and vegetable factory is actively developing novel periploca forrestii derivative products. For example, the periploca mongolica is a preferred plant for making bonsai artwork because of vigorous vitality and easy planting. Developed lever Liu Genji, strong asexual reproduction and cluster formation after single plant planting. For another example, CN202011573970.2 developed a friction welding method for balsalazide material. The wicker preservative treatment can prolong the service life of wood, improve the decay resistance and insect resistance of the wicker, and is an effective measure for saving the raw materials of the wicker. Because preservatives such as sodium pentachlorophenate are harmful to human bodies and cause environmental pollution, the preservatives are increasingly limited or prohibited by the resistance of users and the policies of many countries. The natural and environment-friendly wicker capable of softening the wicker is a research hot spot and a difficult problem to be solved urgently in the wicker field. One skilled in the art is urgent to develop a method for producing softened and preserved wicker branches.
Disclosure of Invention
The invention aims at solving the existing problems and provides a production method for softening and preventing corrosion of wicker branches.
The willow is called goat milk, and the stem and leaf milk of acanthopanax is industrial raw material. The elastic rubber is mainly distributed in the north Anhui region of the Huai river such as Funan and the like, is mainly used for forest edges and ditch slopes, has milk, is planted for covering trees and ornamental purposes, is not eaten by livestock, and is widely used for greening.
A production method for softening and preventing corrosion of wicker branches comprises the following steps: firstly, picking a barks Liu Liutiao, peeling off barks of barks and wickers, and drying until the water content is 12-15% to obtain peeled barks Liu Zhitiao; secondly, pressurizing and impregnating: the method comprises the steps of adopting wood tar preservative solution as impregnating solution, controlling impregnating process parameters to carry out preservative impregnating treatment on peeled periploca barks, specifically, firstly carrying out pre-vacuumizing by impregnating and irrigating, also called pre-vacuumizing, adding wood tar under the condition of keeping the vacuum degree unchanged, then releasing the vacuum, starting pressurizing, and after keeping for a certain time, starting vacuumizing when discharging the pressure; thirdly, antiseptic crosslinking and drying: after pressurizing and impregnating, drying to obtain a drying bar Liu Zhitiao; fourthly, anticorrosive coating: and (3) coating the surface of the dried periploca forrestii wicker with polydivinyl acetylene varnish, and then air-drying to obtain the modified periploca forrestii.
In the past, the polydivinyl acetylene varnish is simply coated on the surface of the periploca azonia, the surface is easy to dry and film, the bottom of a coating film is not dried actually, the coating at the bottom is difficult to dry for a long time, and the quality of the varnish cannot be ensured.
Further, the second step of impregnating bath ratio is 1:2-3, and the vacuum is pre-pumped: absolute pressure is 70-80 kPa, and time is 20-30 min; pressurizing: gauge pressure is 1.4-1.8 MPa, and the time is 3-4 hours; vacuum after pressure relief: absolute pressure is 60-70 kPa, and time is 15-20 min.
Further, the third step of anticorrosion crosslinking drying is carried out for 5-8 min at 130-145 ℃.
The polydivinylacetylene is obtained by polymerizing a byproduct of synthesizing neoprene, namely the polydivinylacetylene, in chlorobenzene through an acid catalyst
Further, the solid content of the polydivinyl acetylene varnish is 40-50%, and the vinyl acetylene varnish contains 0.5-1% of wood tar. Wood tar is a black oily liquid in which the liquid product obtained in dry distillation of wood settles to the lower part when clarified.
The use of wood tar has not been considered to be great in the past. Mainly, wood tar is intensively processed into herbicide, floatation oil, fuel oil and the like.
According to the method, in daily production practice, the effect of softening the periploca forrestii branches can be achieved on the premise that the periploca forrestii branches can be subjected to certain corrosion prevention by taking wood tar as a preservative solution for impregnating the periploca forrestii branches. Meanwhile, the wood tar contains a small amount of lime sulfur, so that the flexibility of the periploca forrestii can be further improved unexpectedly while the anti-corrosion performance is improved. And after the wood tar is impregnated, the surface is coated with the polydivinyl acetylene varnish, so that the corrosion resistance can be further improved, the coating film forming performance of the polydivinyl acetylene varnish is improved, the film forming time is prolonged, and the operation time is plentiful.
Further, the wood tar preservative solution is 100mL wood tar with the Engler viscosity of 200-500 s at 85 ℃, and the wood tar preservative solution contains 2.5-3% of stone sulfur mixture crystal powder. The enroiler viscosity, or simply the enroiler viscosity.
The crystal powder of lime sulphur is called lime sulphur solid, the component is mainly calcium polysulfide, and free sulfur is generated by easy oxidative decomposition in air.
Further, the coating amount of the polydivinyl acetylene varnish in the fourth step is 100-150 g/m 2 。
Further, the fourth step of air drying is carried out for 4 to 6 hours at the temperature of 25 to 35 ℃ and the relative humidity of 40 to 60 percent.
The invention has the beneficial effects that:
the invention discloses a production method for softening and preventing corrosion of wicker branches, which can simply realize the softening and preventing corrosion of the wicker branches. By unexpectedly finding that the impregnation of wood tar and the addition of a small amount of lime sulphur to the wood tar can increase the anti-corrosive properties and improve the flexibility. Meanwhile, the surface of the polydivinyl acetylene varnish is coated on the periploca mongolica branches, so that the film forming performance is improved, the film forming time is prolonged, the air drying time is 4-6 hours, the operation time is plentiful, the film forming quality is good, the formation and compaction of an anti-corrosion coating film are facilitated, and the anti-corrosion performance is further improved. The wood tar has low viscosity and good permeability, and is derived from natural plant materials, so that the wood tar has good compatibility with natural rubber components in the periploca forrestii branches, can obtain good softening effect, and improves the toughness of rubber components. The interaction of the wood tar and the periploca azonia branches further improves the softness of the periploca azonia Liu Zhitiao, plays a role in softening, improves the impact performance of the periploca azonia branches, and is more folding-resistant. The contained lime sulfur can play roles of sterilizing, killing insects and mites simultaneously through permeation and erosion, and the active sulfur generated by decomposition can promote the cross-linking of rubber components contained in the periploca sepium, so that the softening effect of the periploca sepium is further improved. Compared with the prior art, the production method of the soft and corrosion-resistant wicker branches disclosed by the invention has the dual functions of softening and corrosion resistance, does not obviously reduce the strength of the wicker branches, meets the weaving use requirement, has low cost and wide sources of raw materials for processing, is simple and convenient in process, has the functions of insect resistance, mite resistance, corrosion resistance and softness and flexibility, and is natural and environment-friendly in processing process.
Detailed Description
Example 1
Raw materials and equipment: LGT-J5 wood pressurized impregnation tank; the steamed bread mountain Shan seeds grow robustly, have no plant diseases and insect pests, and grow on the current annual diameter 2cm thick stick Liu Zhitiao with the growth potential similar to the average impact toughness of 12.56 kg/cm; a polydivinyl acetylene varnish with a mountain-nano-composite rubber solid content of 40% and surface drying for 2 hours; 100mL of Tianmei high I type wood tar with an Engler viscosity of 350s at 85 ℃; taiji biochemical lime sulphur mixture crystal powder.
The production method of the softened and corrosion-resistant wicker branches comprises the following steps: firstly, picking a barks Liu Liutiao, peeling off barks of barks, and drying until the water content is 13% to obtain peeled barks Liu Zhitiao; secondly, pressurizing and impregnating: the wood tar preservative solution is used as impregnating solution, the impregnating process parameters are controlled to carry out preservative impregnating treatment on peeled periploca sepium, the impregnating bath ratio is 1:2.5, and the pre-vacuumizing is carried out: absolute pressure 75kPa, time 25min; pressurizing: gauge pressure is 1.6MPa, and the time is 3.5 hours; vacuum after pressure relief: the absolute pressure is 65kPa, the time is 18min, specifically, the method comprises the steps of injecting and filling the wood tar into the wood tar, vacuumizing the wood tar, namely, the wood tar, under the condition of keeping the vacuum degree unchanged, then releasing the vacuum, starting to pressurize, and after keeping for 3.5h, vacuumizing the wood tar after starting to discharge the pressure, wherein the wood tar preservative solution is wood tar, and the wood tar preservative solution contains 2.75% of stone sulfur mixture crystal powder; thirdly, antiseptic crosslinking and drying: after pressurized infusion, drying for 6min at 135 ℃ to obtain a drying bar Liu Zhitiao; fourthly, anticorrosive coating: coating the surface of the dried periploca balk-wood with polydivinylacetylene varnish at an amount of 125g/m 2 Air-drying at 30deg.C and relative humidity of 50% for 5 hr to obtain softened antiseptic wicker and wicker, and regulating water content to 10%.
The product has the following grain compressive strength of 43.1MPa, the bending strength of 69.2MPa and the impact strengthToughness of 16.54kg/cm 2 The torsion strength is 13.87MPa, the transverse grain compressive strength is 4.05MPa, the splitting resistance is 25.82N/mm, and the longitudinal grain shear strength is 3.61MPa. The penetration depth is 20mm, and the side material penetration rate is 100%. The sound grade after termite is eaten down meets the 10 grade, and no termite road or termite mark exists; the mothproof grade is in accordance with grade 1.
Example 2
Raw materials and equipment: LGT-J5 wood pressurized impregnation tank; the Anyang mountain Li Xiaolou has strong growth, no plant diseases and insect pests and similar growth vigor, and the current annual diameter of the bar Liu Zhitiao is 1.8 cm; polydivinyl acetylene varnish with a mountain-nano-composite rubber solid content of 50%; 100mL of wood tar with an Engler viscosity of 200s at 85 ℃ in the Suiinjiaxing tar factory; chuandong chemical stone-sulfur mixture crystal powder.
The production method of the softened and corrosion-resistant wicker branches comprises the following steps: firstly, picking a barks Liu Liutiao, peeling off barks of barks, and drying until the water content is 12% to obtain peeled barks Liu Zhitiao; secondly, pressurizing and impregnating: the wood tar preservative solution is used as impregnating solution, the impregnating process parameters are controlled to carry out preservative impregnating treatment on peeled periploca sepium, the impregnating bath ratio is 1:2, and the preliminary vacuum pumping is carried out: absolute pressure 80kPa, time 20min; pressurizing: gauge pressure is 1.8MPa, and time is 4 hours; vacuum after pressure relief: the absolute pressure is 70kPa, the time is 15min, specifically, the method comprises the steps of injecting and filling the wood tar into the container for pre-vacuumizing, namely, pre-vacuumizing, adding the wood tar under the condition of keeping the vacuum degree unchanged, then releasing the vacuum, starting to pressurize, and after the keeping time is 4h, vacuumizing again when starting to discharge the wood tar, wherein the wood tar preservative solution contains 2.5% of stone sulfur mixture crystal powder; thirdly, antiseptic crosslinking and drying: after pressurized infusion, drying for 5min at 130 ℃ to obtain a drying bar Liu Zhitiao; fourthly, anticorrosive coating: the surface of the dried periploca balk-wood is coated with polydivinyl acetylene varnish with the coating amount of 100g/m 2 Air-drying at 25deg.C and relative humidity of 40% for 6 hr to obtain softened antiseptic wicker and wicker, and adjusting water content to 11%.
The product is as follows: the grain-oriented compressive strength is 42.3MPa, the bending strength is 68.7MPa, and the impact toughness is 16.43kg/cm 2 The torsion strength is 13.64MPa, the splitting resistance is 26.61N/mm, the transverse grain compression strength is 4.19MPa, and the smooth grain shear strength is 3.53MPa. Penetration depth 15mm, the permeability of the side material is 100%. The sound grade after termite is eaten down meets the 10 grade, and no termite road or termite mark exists; the mothproof grade is in accordance with grade 1.
Example 3
Raw materials and equipment: LGT-J5 wood pressurized impregnation tank; the Funan golden yellow-leaf has strong growth, no plant diseases and insect pests and similar growth potential, and the average impact toughness is 12.56kg/cm 2 A current annual diameter of 1.5cm bar Liu Zhitiao; polydivinyl acetylene varnish with 45% of solid content of mountain NaHe Corp; 100mL of wood tar with an Engler viscosity of 500s at 85 ℃ from Xinpinus resin company; sulfur compound crystal powder in Sanxia agricultural chemical factory.
The production method of the softened and corrosion-resistant wicker branches comprises the following steps: firstly, picking a barks Liu Liutiao, peeling off barks of barks, and drying until the water content is 15% to obtain peeled barks Liu Zhitiao; secondly, pressurizing and impregnating: the wood tar preservative solution is used as impregnating solution, the impregnating process parameters are controlled to carry out preservative impregnating treatment on peeled periploca sepium, the impregnating bath ratio is 1:3, and the pre-vacuumizing is carried out: absolute pressure 70kPa for 30min; pressurizing: gauge pressure is 1.4MPa, and time is 3 hours; vacuum after pressure relief: the absolute pressure is 60kPa, the time is 20min, specifically, the method comprises the steps of injecting and filling the wood tar into the wood tar, pre-vacuumizing, namely, pre-vacuumizing, adding wood tar under the condition of keeping the vacuum degree unchanged, then releasing the vacuum, starting to pressurize, and vacuumizing again when starting to discharge the pressure after keeping for 3 hours, wherein the wood tar preservative solution is wood tar, and the wood tar preservative solution contains 3% of stone sulfur agent crystal powder; thirdly, antiseptic crosslinking and drying: after pressurized infusion, drying for 8min at 145 ℃ to obtain a drying bar Liu Zhitiao; fourthly, anticorrosive coating: coating the surface of the dried periploca balk-wood with polydivinylacetylene varnish at an amount of 150g/m 2 Air-drying at 35deg.C and relative humidity of 40% for 6 hr to obtain softened antiseptic wicker, and adjusting water content to 11%.
Softening the anti-corrosion wicker product: impact toughness 15.98kg/cm 2 The torsion strength is 13.16MPa, the splitting resistance is 27.67N/mm, the transverse grain compressive strength is 4.23MPa, the longitudinal grain compressive strength is 43.8MPa, the bending strength is 68.5MPa, and the longitudinal grain shear strength is 3.21MPa. The penetration depth is 15mm, and the side material penetration rate is 100%. The termite after being eaten down has a sound grade of 10, and no termite road or termite wayMoths; the mothproof grade is in accordance with grade 1.
Note that: reference is made to "high clear, zhang Xiaoyan, lu Guoxin, li Yuling. Test and comparative study of properties of Jingzheng Liu Lixue [ J ]. Forestry utility technology, 2012 (11): 103-106." for detection by the mechanical property test method. GB/T27656-2011 small-diameter anticorrosion wood for crop support. Termite protection tests were performed according to the standard GB/T18260-2015 specification. The test was carried out according to the standard GB/T29776-2013.
Claims (4)
1. The production method of the softened and corrosion-resistant wicker branches is characterized by comprising the following steps of: firstly, picking a barks Liu Liutiao, peeling off barks of barks and wickers, and drying until the water content is 12% -15% to obtain peeled barks Liu Zhitiao; secondly, pressurizing and impregnating: the method comprises the steps of adopting wood tar preservative solution as impregnating solution, wherein the wood tar preservative solution is 100mL wood tar with the Engler viscosity of 200-500 s at the temperature of 85 ℃, the wood tar preservative solution contains 2.5-3% of crystal powder of lime sulfur, controlling impregnating process parameters to carry out anti-corrosion impregnating treatment on peeled periplaneta, specifically, firstly carrying out impregnating and pre-vacuumizing, also called pre-vacuumizing, under the condition of keeping the vacuum degree unchanged, adding the wood tar, then releasing the vacuum, starting pressurizing, carrying out vacuumizing again when starting discharging after a certain time, and carrying out pre-vacuumizing, wherein the impregnating bath ratio is 1:2-3: absolute pressure is 70-80 kPa, and time is 20-30 min; pressurizing: gauge pressure is 1.4-1.8 MPa, and the time is 3-4 hours; vacuum after pressure relief: absolute pressure is 60-70 kPa, and time is 15-20 min; thirdly, antiseptic crosslinking and drying: the anti-corrosion crosslinking drying condition is that the drying is carried out for 5 to 8 minutes at the temperature of 130 to 145 ℃, and the drying bar Liu Zhitiao is obtained after the pressurizing impregnating; fourthly, anticorrosive coating: and (3) coating the surface of the dried periploca forrestii wicker with polydivinyl acetylene varnish, and then air-drying to obtain the modified periploca forrestii.
2. The method for producing the softened and corrosion-resistant wicker willow branch according to claim 1, wherein the solid content of the polyvinyl acetylene varnish in the fourth step is 40-50%.
3. According to claim 1The production method of the softened and corrosion-resistant wicker willow branch is characterized in that the fourth step of polyvinyl acetylene varnish coating amount is 100-150 g/m 2 。
4. The method for producing the soft and corrosion-resistant wicker willow branch according to claim 1, wherein the fourth step of air-drying is carried out for 4-6 hours at 25-35 ℃ and relative humidity of 40-60%.
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