Structurally integrated materials are important materials for bearing members such as beams, columns, beams, doors and windows of buildings. In addition to their high physical and mechanical properties, they must also have corrosion resistance, fire resistance and weather resistance. The test results show that the preservative treatment of the laminated materials by conventional preservatives not only prolongs the service life, but also has no adverse effect on the bonding performance. For the structural characteristics of the laminated material, the method of drug treatment of the laminate before the bonding of the laminated material can make the action of the medicament reach the depth of the laminated material, so that the drug treatment in the laminated material becomes possible, and the ideal antiseptic effect is achieved. Commonly used wood preservatives are mainly oil preservatives, oil-soluble preservatives, water-soluble preservatives, such as copper chromium arsenic (CCA), copper arsenate (ACA), creosote, sodium pentachlorophenol , copper naphthenate, and the like. However, these preservatives mostly inhibit the growth of microorganisms by toxicity, and achieve the purpose of antisepsis. As people pay more and more attention to the harm of preservatives to humans and the damage to the living environment, it is hoped to develop a highly effective and low-toxic wood preservative. At present, the new preservative ACQ has the characteristics of good anti-corrosion performance, long-lasting effect and low toxicity, but it is expensive. The United States and Japan have now replaced CCA (copper chrome arsenic) with ACQ to reduce environmental pollution. The anti-corrosion treatment methods of the laminated materials mainly include a painting method, a spraying method, a dipping method and a pressing method, and the medicine treatment processes mainly include a full cell method, a empty cell method, an alternating pressure decompression method, and a vacuum injection method. Although these treatment methods and treatment processes are all suitable for the anti-corrosion of the laminated materials, when the structural laminated materials are treated with anti-corrosion treatment, the types, concentrations and treatment methods of the preservatives should also be selected according to the specific conditions. In consideration: 1 the use conditions of the laminated materials and the degree of influence on the surrounding environment; 2 part or all of the processing; 3 the species, shape and size of the laminated timber; 4 processing and other factors after processing, can also refer to the relevant Japanese standards Specific treatment. Japanese standard (1) The hygroscopicity of wood preservatives and insect repellents is suitable for more than B standards according to JISA9201 "Performance Standards for Wood Preservatives". (2) The ratio of active ingredients must comply with the Japanese Industrial Standards (JIS). (3) When using a laminated material in a place directly washed by rain, use a chemical that is difficult to precipitate. (4) When anti-corrosion and anti-termite agents are used in places prone to fire, their fire resistance should meet the above B standards. (5) When using wood anti-corrosion and anti-termite agent in the joints with hardware such as bolts, the degree of corrosion to iron should conform to the A standard specified in Japanese JISA9201 standard. Specific treatment requirements (1) When the treatment is carried out by the pressurization method, the absorption amount of the chemical liquid is carried out according to the Japanese Agriculture and Forestry Standard (No. 143 of the Ministry of Agriculture, Forestry and Fisheries, January 31, 1991) of the sawn timber for the structure of the softwood structure. When a water-soluble agent is used, its concentration standard is 2%. (2) When treated by the dipping method, the absorption amount of the water-soluble, oily, and oil-soluble agents should be 50 kg/m3 or more. (3) When the coating method or the spraying method is used, the absorption amount of the water-soluble agent should be 400 ml/m3 or more; the oily and oil-soluble agent should be 300 ml/m3 or more. (4) For the painting and spraying treatment, the second treatment is performed after the first treatment liquid is dried. (5) When reprocessing the treated glulam, the machined surface must be painted or sprayed twice with oily or oil-soluble liquid. The treated cement should be fully dried before use; when cracks occur in the laminated material, the cracks are applied or sprayed twice with oily or oil-soluble agents.
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