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山东防腐木是怎么加工而成的

来源: 时间:2020-11-13

方法一、防腐木加工—浸泡法
Method 1. Antiseptic wood processing soaking method
在常温常压下,将木材浸泡在盛防腐剂溶液的槽或池中,木材始终处于液面以下部位。浸泡时间视树种、木材规格、含水率和药剂类型而定,具体以达到规定的药剂保持量和透入度为准。为了改善处理效果,在浸泡液中可设置超声波、加热装置,以及添加表面活性剂,改进木材的渗透性。视浸泡时间的长短,浸泡法可分瞬间浸渍(时问数秒至数分钟)、短期浸泡(时间数分钟至数小时)和长期浸泡(时间数小时至1个月)。适用于单板和补救性防腐处理,以及临时性的木材。
Under normal temperature and pressure, the wood is immersed in the tank or pool containing preservative solution, and the wood is always below the liquid level. The soaking time depends on the tree species, wood specifications, moisture content and pesticide type, and the specified retention amount and permeability of chemicals shall prevail. In order to improve the treatment effect, ultrasonic wave, heating device and surfactant can be set in the soaking solution to improve the permeability of wood. Depending on the length of soaking time, the immersion method can be divided into instantaneous immersion (time from seconds to minutes), short-term immersion (minutes to hours) and long-term immersion (time from several hours to one month). Suitable for veneer and remedial preservative treatment, as well as temporary wood.
方法二、防腐木加工—扩散法
Method 2. Antiseptic wood processing diffusion method

山东防腐木
根据分子扩散原理,借助于木材中的水分作为药剂扩散的载体,药剂由高浓度向低浓度扩散,扩散到木材的深层。凶此,扩散法防腐处理木材须具备如下条件:
According to the principle of molecular diffusion, with the help of water in wood as the carrier of drug diffusion, the agent diffuses from high concentration to low concentration and spreads to the deep layer of wood. Therefore, the following conditions must be met in the treatment of wood by diffusion method:
1、小材含水率足够高,通常为35%~40%以上,生材好;
1. The moisture content of small wood is high enough, usually more than 35% - 40%, and the green wood is good;
2、水载型药剂(扩散型),溶解度高,且固化慢;
2. Water borne agent (diffusion type) has high solubility and slow solidification;
3、环境温度和湿度较高。按作业过程,扩散法可分浆膏扩做法、浸渍或喷淋扩散法、绑带扩散法、钻孔扩散法(或点滴扩散法)和双剂扩散法。扩散法处理设备投资少生产工艺简单。易在广大的农村应用和推广。与此法类似的还有树液置换法。
3. The ambient temperature and humidity are high. According to the operation process, the diffusion method can be divided into paste expansion method, immersion or spray diffusion method, bandage diffusion method, drilling diffusion method (or spot diffusion method) and double agent diffusion method. The equipment investment of diffusion method is less, and the production process is simple. It is easy to be applied and popularized in rural areas. Similar to this method is the replacement of tree sap.
方法三、防腐木加工—热冷槽
Method 3: antiseptic wood processing - hot and cold trough
利用热胀冷缩的原理,使木材内的气体热胀冷缩,产生压力差,以便克服液体的渗透阻力,即将木材在热的液体中加热。令小材中的空气膨胀,部分水分也蒸发,木材内部压力高于大气压,空气和水蒸气向外部溢出,此时,迅速将木材置于较冷的液体中,木材骤冷,木材内的空气因收缩产生负压,冷的液体渗入木材内。按处理方法及冷槽的配置,可分双槽交替法、单槽热冷液交替法和单槽置冷法。由于处理效率较低(与加压法比),单位产品的能耗大,通用于小批量的木材防腐处理。
Based on the principle of thermal expansion and cold contraction, the gas in wood will expand and contract in hot liquid, resulting in pressure difference, so as to overcome the resistance of liquid penetration, that is, wood is heated in hot liquid. It makes the air in the small timber expand and part of the water evaporates. The internal pressure of the wood is higher than the atmospheric pressure, and the air and water vapor overflow to the outside. At this time, the wood is quickly placed in a relatively cold liquid, and the wood suddenly cools. The air inside the wood is under negative pressure due to shrinkage, and the cold liquid seeps into the wood. According to the treatment method and the configuration of cold bath, it can be divided into two tank alternating method, single tank hot and cold liquid alternating method and single tank placing cooling method. Due to the low treatment efficiency (compared with the pressure method), the energy consumption per unit product is high, so it is widely used in small batch wood preservative treatment.