Hotline：
133-3102-1811
Chinese
News
首页 > News > Industry information >
What is the common glue for solid wood furniture processing?
Date：2020-01-03 09:30:00
Share：
According to statistics, the glue used in the wood industry accounts for about 60% of the total glue output. Wood is a polar substance, so glue must also be a polar substance to bond wood and glue firmly. In the gluing process of solid wood furniture, a series of physical and chemical changes have taken place on the surface of wood. Physical bonding: glue penetrates into the cell cavity of wood through the tube hole on the surface of wood. As the glue solidifies or hardens, a lot of small hooks or nails are formed in it, so as to glue two pieces of wood together. Chemical bonding: after wood sizing, chemical reaction occurs between glue and wood molecules, so as to obtain high-strength main valence bond, and the chemical bond force is more important The force between the sons is much greater.
1. Universal adhesive, chemical name "cyanoacrylate", first appeared in 1942. Kufu's research team initially wanted to develop a material to clean the gun sight, but this compound always stuck to all objects, so it was abandoned. But Kupffer took a fancy to this feature and launched the all-purpose adhesive in 1958. In his early years, he hosted TV programs and demonstrated himself hanging on steel pipes with a small drop of all-purpose glue.
2.502 glue, the chemical formula is CH2 = C (CN) - coo-c2h5, colorless, transparent, low viscosity, flammable liquid, single component, solvent-free, slightly pungent, volatile, volatile gas with weak tear gas. 502 glue has certain toxicity, but the toxicity will be reduced after curing, but 502 glue is cyano compound after all, and toxic substances will be produced after decomposition. In case of moisture, it will be catalysed and quickly polymerized, solidified and adhered. Under the catalysis of micro amount of water in the air, the addition polymerization takes place, which quickly solidifies and adheres the adherend. 502 glue is used for the combination of porous and absorbent materials. It is used for the bonding of steel, non-ferrous metals, rubber, leather, plastics, ceramics, wood, non-metallic ceramics, glass and flexible materials, such as rubber products, leather shoes, soft and hard plastics, etc., or between themselves. However, for the difficult to stick materials such as polyethylene, polypropylene, polytetrafluoroethylene, etc., the surface of the materials needs special treatment before they can be stuck Knot.
3. Urea formaldehyde resin, also known as urea formaldehyde resin. The abbreviation of UF is that urea and formaldehyde are condensed into initial urea formaldehyde resin under the action of catalyst (basic or acid catalyst), and then form insoluble and immiscible final thermosetting resin under the action of curing agent or assistant. The color of cured urea formaldehyde resin is lighter than that of phenolic resin. It is translucent, resistant to weak acid and alkali. It has good insulation performance, excellent wear resistance and low price. It is the most widely used adhesive. Especially in the wood processing industry, urea formaldehyde resin and its modified products account for about 90% of the total amount of adhesives. However, in case of strong acid and alkali, it is easy to decompose, with poor weather resistance, poor initial viscosity, large shrinkage, brittleness, water resistance and easy aging. There is a problem of formaldehyde release in the manufacturing and use of wood-based panel produced by urea formaldehyde resin, so it must be modified.
4. AB adhesive is a two-component epoxy resin adhesive. It not only has high adhesive strength, high hardness, high chemical resistance, but also has anti yellowing effect. Even on the vertical surface or ceiling, there is no sagging, moderate dry fixation, safety and environmental protection. Component A is acrylic modified epoxy or epoxy resin, or contains catalyst and other additives; component B is modified amine or other hardener, or contains catalyst and other additives. Mix in proportion. The catalyst can control the curing time, and other additives can control the properties (such as viscosity, rigidity, flexibility, adhesion, etc.). The properties of AB glue sold on the market have been determined in the formula, generally, there is no big change, and it needs to be customized to the manufacturer. Modified acrylic modified epoxy or epoxy resin adhesive has quick drying characteristics. After a \ B is mixed, it will dry out in 5 minutes at 25 ℃, and the higher the temperature is, the shorter the drying out time is. It can bond plastic and plastic, plastic and metal, metal and metal. After bonding, stripping requires cutting tools or hot-melt separation. Plastic and plastic bonding effect is good, almost equal to the strength of ABS, widely used in handmade improvement.
5. Plywood glue, mainly used for plywood of hardwood species, such as hard maple, Fraxinus mandshurica, red oak, teak, etc. Usage: 1. The moisture content of wood is 8-12%. 2. Ratio: panel glue: curing agent = 10:0.8 ~ 1 (weight ratio). 3. When using, add the curing agent into the glue and mix evenly, and use it best within 1-2 hours. It is a normal phenomenon to find bubbles in use. If there are too many bubbles, it needs to be stirred several times until the bubbles settle naturally before use. 4. Pressure relief: pressure relief is required for a long time. For small area plates, pressure relief can be carried out 1.5 hours after pressure relief, but 3 hours after pressure relief must be carried out before transferring to the next process.
6. Wood glue powder is a kind of modified environmental protection resin powder refined from carbon aldehyde and turpentine. The wood glue powder only needs to be mixed with clear water to form a strong glue liquid. When the wood glue powder is bonded with other furniture wood materials, it will never penetrate into impurities and dissolve in the water surface to make it lose its adhesion. Main use: wood glue powder is used as wood adhesive, suitable for furniture assembly, wood panel splicing, board veneering, wood piece jointing, board gluing, etc. It can be cold bonded and hot bonded. The adhesive has the characteristics of high adhesive strength and easy preservation. It has high solid content, high forming hardness and good filling property.
7. White emulsion is a kind of adhesive with wide application and large dosage. It is widely used in wood furniture, wood-based panels, paper products, fiber leather, foam plastic, electrostatic flocking, industrial cloth, textile, handicrafts processing, making cement reinforcement and coating industry, and many other industries. White latex has the characteristics of convenient use, good initial adhesion, fast curing at ambient temperature, wide adhesive range, and relatively simple production process. In the process of construction, it takes two hours to pressurize and 24 hours to fully cure the white emulsion.
About us Business introduction Corporate culture Enterprise brand Subordinate institution Qualification honor
News Company dynamics Industry information
Technological process Dry Fixing Technology AB Using Method
总
Beijing Sarlsson New material Co,.Ltd.
Beijing Adress：Daxing Industrial Zone Beijing
Beijing Telephone： 13331021811 / 13331025578
分
Bengbu Sarlsson New Material Co,.Ltd.
Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
Anhui Telephone： 0552-8698885 / 8698886 / 8698887
Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
Anhui Telephone： 0552-8698885 / 8698886 / 8698887
分
Jiangxi Sarlsson New material Co.,Ltd.
Penggao Industrial Zone Shangli Country Pingxiang City Jiangxi Province
Copyright © 蚌埠赛尔时代工贸有限公司 皖ICP备17024280号
技术支持：智导互联