As people pay more attention to the concept of environmental protection, most consumers have begun to consume for environmental protection. In the process of home decoration, the requirements for environmental protection are naturally indispensable. The first is to choose environmentally friendly products. In many types of household products, our usual point of view is: the more natural the raw materials, the higher the environmental performance. But in fact, any natural materials must be processed, and if the method used in the process is not environmentally friendly, it will also affect the environmental performance of the product.
Due to the rapid development of China's flooring industry and fierce competition among enterprises, some enterprises blindly pursue low cost and low price to compete for a larger market share, relax the environmental performance of products, and choose organic materials and adhesives. The volatiles are seriously exceeded, which directly damages the physical and mental health of consumers.
As a result, home improvement consumers are increasingly demanding environmentally friendly flooring. There is market supply for consumer demand. At this time, a group of environmentally friendly flooring was unveiled in the industry, aiming to meet the "green" needs of the majority of home improvement consumers.
Numerous floors clearly indicate that nature and environmental protection will be the trend of the flooring industry. However, there are still many ambiguities about the environmental protection of the flooring industry. For example, green is the saying of environmental protection. “Real green and environmentally friendly decoration is currently difficult to achieve.†Experts in the industry speak amazingly. Benzene, formaldehyde, radiation... These "by-products" that are inseparable from the home decoration are increasingly causing public concern, so the decoration companies almost invariably played the "green" and "environmental" cards. Some floor manufacturers use consumers' pursuit of green consumption to promote to consumers, the floor is green and the floor is environmentally friendly.
As everyone knows, this kind of propaganda has caused consumers to fall into a misunderstanding. Green does not necessarily mean environmental protection. In the European flooring industry, the green core material is a sign of waterproofing and does not reflect the indicators related to the core material and human health. The floor of the domestic green core material is neither guaranteed to be waterproof nor environmentally friendly. In China, neither the government industry authorities nor other authoritative institutions have clearly defined the color of the core material. The green pigment substrate floor is considered to be an environmentally friendly product, and the producer is a misleading intention, and the consumer has misunderstood.
Whether the floor is environmentally friendly or not is determined by two important factors: first, the low formaldehyde content in the product is harmful to the human body, and second, there are certain sterilization measures. Do not add any dye to the substrate to maintain the color of the wood itself; use a more environmentally friendly low aldehyde glue to minimize the formaldehyde content; and add antibacterial and antibacterial materials to the floor immersion to create a real Environmentally friendly flooring in the sense.
With the increasing awareness of environmental protection and energy conservation, more and more signs indicate that home improvement consumers have become an inevitable trend in choosing green building materials. More and more people in the industry have reached a consensus: environmentally friendly flooring should be more encouraged and promoted.
“Choose green flooring and improve the quality of home life, and more and more become the focus of attention of every modern family. Environmentally friendly flooring is a trend that will never change,†said a floor person. From the current point of view, although the cost price of environmentally friendly flooring is still relatively high, but from the ecological and health aspects, floorers should look more long-term. Only in this way can we be worthy of our social offspring and the environment.
The current mainstream of the society is environmental protection, health, ecology, energy conservation, and the promotion of environmentally friendly flooring will lead the flooring industry to become more mainstream in the society. The environmental protection of flooring is not only a sustainable development path, but also an important aspect to ensure people's health and improve their quality of life. It is an inevitable trend and trend in the development of the flooring industry. The promotion of environmentally friendly flooring can improve the living environment of the people and promote the development of more enterprises in the direction of greening.
15-25mm Calcium Carbide: Physical and chemical properties: ores are solid brown or black block, pure white crystals (including CaC2 higher purple). Density of 2.22 g / cubic centimeter, the melting point of 2300 ° C (with CaC2 content), water immediately intense reaction to generate acetylene, and release heat, Calcium Carbide content varies with the melting point also will change.
Impurities: Caustic soda often contain calcium arsenide (Ca3As2), calcium phosphide (Ca3P2) and other impurities, and the role of water at the same time release arsine (AsH3), phosphine (PH3) and other toxic gases, so the use of Acetylene generated by calcium carbide is toxic.
Crystal structure
The most common crystal form of CaC2 is tetragonal, stable between 298K and 720K. Quartet CaC2 similar to the crystal structure of NaCl, but due to [: C≡C:] 2- ion oval, oriented, the crystal is tetragonal. In CaC2 crystal, the C-C distance is 120pm, which corresponds to the bond length of carbon-carbon triple bond, the distance between Ca and C is 259 and 282pm.
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