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A basic introduction to cork.
Commonly known as cork and cork plants, it is the outer bark product of tree species with a very developed cork layer, and is the surface protective tissue of stems and roots after they have thickened and grown. Bark oak mainly exists in seven countries on the west coast of the Mediterranean basin, Algeria, and Tunisia. There is also a small amount of production in the Qinling Mountains of my country. It has a certain nitrogen content and is rich in potassium. The pH value reaches 5160 to 800 mm. The temperature is not lower than 5 degrees all year round and is affected by the Atlantic wind. Therefore, Portugal’s good natural environment makes it a world-recognized kingdom of cork. The output and quality of cork and its products rank first 30% in the world.
Distribution of origin of softwood.
Output 50% of cork raw materials, 32% of Portugal is produced in Spain, 6% is produced in Italy, more than 50% are concentrated in Egyptian tombs thousands of years ago, and cork stoppers have been found. China has records of cork in the Spring and Autumn Period. In ancient Greece, cork bark was used as floats for fishing nets and as a hair tonic for sandals. In 1680, the fruit was even better. This is the most important development of the cork industry.
Development of the cork industry
The great development of the cork industry began in the last quarter of the 19th century, when JHNSMITH, an American, discovered that cork could be produced into synthetic cork products. The skin obtained from the first harvesting and peeling of rare cork materials is called first skin a or primary skin. The best ones can reach 6-8 centimeters, and their lifespan is nearly 200 years. Cork is composed of flat cells, and the cell cavity often contains resin and tannin compounds, which are the effects of chemicals and are poor conductors of electricity, heat and sound. It is composed of dead cells in a 14-hedron shape, arranged radially from each other in a hexagonal prism pattern. The typical cell diameter is 30 microns. There are no conduits between cells. The interval between two adjacent cells is composed of 5 layers, two of which are fibers. properties, followed by two layers of corkization, and a layer of lignification in the middle. There are more than 40 million cells in every 1 cubic centimeter, and the still air in the cell cavity accounts for 70% of the unit volume, so cork It is a lightweight material, and the gaps between adjacent cells are filled with resin. Make each cell an air-tight and liquid-tight sealed unit.
Properties of cork.
It is the special cell structure and chemical composition of dry cork that makes it have good air cushion elasticity, shock absorption function, excellent sound absorption, isolation, corrosion resistance, moisture resistance, wear resistance, fire protection and other properties. Cork has very good elasticity, sealing, heat insulation, sound insulation, and is not easy to catch fire. There is still no man-made product that can match it. In terms of chemical properties,
Cork uses:
Generally referred to as softwood resin, this kind of substance is resistant to decay and chemical attack. Therefore, in addition to being corrosive to concentrated nitric acid, concentrated sulfuric acid, chlorine, iodine, etc., it is not resistant to water, grease, gasoline, organic acids, salts, esters, etc. Act chemically. It has a wide range of uses, such as making bottle stoppers and insulation layers for refrigeration equipment. Natural cork products are steamed, softened, and dried and then directly cut, stamped, and turned into finished products, such as stoppers, pads, handicrafts, and other baked cork products. . The remaining material of natural cork products is crushed and compressed to form hot cork bricks. The superheated steam heating method can also be used to manufacture cemented cork products, such as floor veneers, sound insulation boards, heat insulation boards, etc., which are widely used in aerospace, ships, machinery, construction, etc. Cork rubber products: About 70% of the rubber content is made from cork powder. It has the compressibility of cork and the elasticity of rubber. It is mainly used as a high-quality low- and medium-pressure static sealing material for engines and other engines. It can also be used for earthquake resistance, sound insulation, Friction materials, etc.
Cork in construction
Cork wall panels: The sound insulation of the floor made of cork wall materials maintains indoor constant temperature and internal quietness. At the same time, cork is a wood material with "B2" level fire resistance and self-extinguishing properties, making it a leader in quality protection materials. By. The good elasticity of cork allows it to maintain synchronous changes after being stacked with logs, eliminating worries. Glue is applied to the drywall and the floor becomes elastic. The distance between people and the space becomes closer. The walls and floors are decorated with cork wall panels. No matter what kind of furniture or furnishings are exposed, a perfectly unified picture is formed. . Scientific and technological data proves that once people get out of the noisy environment, they will get a quiet and warm soft floor that is relaxed and powerful.
Environmental impact on health
In such an atmosphere, the fatigue after a day's journey can be completely eliminated, and arthritis rarely occurs if you stay in this environment for a long time.
Classification of interior wall and floor decorations used in buildings
The interior wall and floor decorations used in overseas private villas and urban garden buildings can generally be divided into three categories: latex paint, carpets and wooden floors. The newly developed cork decorative boards are a newly emerging category, with many The main reason for the trend of replacement is that it has many decorative functions, rich styles, and does not bring negative health effects to the human body.
Characteristics of cork.
There are many varieties and specifications of cork, which can be designed according to design needs and assembled into a variety of patterns and colors. The construction is simple and can be directly pasted on the wall or floor.
Cork application scenarios
In the decoration of libraries, kindergartens, gymnasiums, computer rooms, etc., with the development of the modern decoration industry, dry walls and ground materials are attached.
Harmony between decorative materials and people
The psychology and environment are harmoniously blended with people. The decorative effects of VC boards, marbles, etc. are full of typical luxury and strong human touch.