我和表妺洗澡好紧作爱视频,我和亲妺在客厅作爱视频网站,护士表妺好紧竟然流水视频

  • <th id="r0iq2"></th>

        Hotline:159 9166 8098 Hotline:158 2935 8666Hotline:158 2909 1111

        Product list

        If you have any questions, please call

        029-83808388 83808383 

        銷售熱線:158 2909 1111

        One of Seven Steps of Carbon Black Knowledge

        For the past six months, I have been studying the black thing like carbon black, and I have read it in bits and pieces. I have always wanted to share my understanding with you. The purpose is threefold:
          1. If you are After entering the chemical industry just like me, I feel very happy, and we can discuss it together.
          2. If you have just broken down in the chemical industry, then I am very proud. I hope my easy-to-understand explanation can make you understand what carbon black is.
          3. If you are an expert and a senior, then I am very excited. I hope you can give me guidance and improve me.
          I am in sales. Although the company is technology-oriented, I only need to understand my own requirements, so what I am concerned about is the use of carbon black! For this reason, I divide my understanding into 7 parts. At this moment, I will share with you one part of its carbon black application: Overview
          of carbon black    1. What is
          carbon black Carbon black, as its name implies, must be: carbon. Its basic particle size is between 10-100nm, SO, it has excellent rubber reinforcement, coloring, conductive or antistatic and ultraviolet attracting functions. and so carbon black is a rubber reinforcing filler, and is the second rubber raw material next to raw rubber. Carbon black is also used as a colorant, ultraviolet light shielding agent, antistatic agent or conductive agent. It is widely used in plastics, chemical fibers, inks (including copier toner, inkjet printing inks, etc.), coatings, electronic components, leather chemicals and dry batteries And other products in many industries. At the same time, it is also used in metallurgy and carbon material industries as high-purity carbon materials.
          Are you shocked by its many uses? At least I think so, the previous understanding of him was too one-sided, thinking that he was just playing a coloring function.
          2. The manufacturing method of carbon black
          You must have learned the principle of carbon formation in chemistry before. That is, hydrocarbon compounds (liquid or gaseous) are produced by incomplete combustion or thermal cracking. It is mainly composed of carbon elements, which are almost in the form of spherical colloidal particles and colloidal aggregates.
          Carbon black manufacturing methods are divided into two categories: incomplete combustion method (in the presence of oxygen, which is the main carbon black production method) and thermal cracking method (under oxygen-free conditions)
          there are many small branch classification methods. All in all, the oil furnace method is the main manufacturing method. General carbon black is also produced by the oil furnace method.
          3. Classification and naming of carbon black
          1. Classification and naming of carbon black for rubber
          A, hard carbon black and soft carbon black (according to the reinforcing function of the filled carbon black compound) To divide)
          Hard carbon black has a greater effect on rubber reinforcement. The rubber compound filled with hard carbon black has lower hardness, better elongation and wear resistance. It acts on the tire tread and is also called: tire Surface carbon black
          soft carbon black has little reinforcing effect on rubber. The rubber compound filled with soft carbon black has lower hardness, better elasticity, lower heat generation, and its strength and wear resistance are not as good as hard carbon black. Mainly used in tire carcass and various rubber products, SO called carcass carbon black.
          B. Traditional naming of carbon black varieties.
          Channel carbon black is the first industrialized carbon black variety. The smaller the basic particles, the better the reinforcement performance, but it is difficult to mix and vice versa, so it was once classified as difficult to mix carbon black. (HPC), miscible carbon black (MPC), and easily miscible carbon black (EPC) and other
          gas furnace carbon blacks are produced after channel carbon black: the basic particles are larger and the reinforcement performance is not as good as channel carbon black , So it is called semi-reinforced furnace carbon black (SRF). High-density furnace carbon black (HMF) and fine-particle furnace carbon black (FF) with smaller basic particles and better reinforcement performance.
          Oil furnace carbon black is called high abrasion furnace carbon black (HAF) because of its better wear resistance than channel carbon black. Super abrasion-resistant furnace carbon black (SAF) with small basic particles and better wear resistance, and medium-super abrasion-resistant furnace carbon black (MAF) in it
          In carbon black for rubber, the letter N or S represents the vulcanization rate of the carbon black compound, where N represents the normal vulcanization rate, and S represents the slow vulcanization rate. In ASTM D, it is stipulated that the same first and second numbers such as N110, N220, N330, N550, N660, etc. are all standard structure varieties, while N219, N339, and N326 are all low structure varieties, such as N234, N339, N347, N375, and N582 are all high-structure varieties. Among them, N100-N300 is hard carbon black, N500-N700 is oil furnace soft carbon black, and N800-N900 is thermal carbon black.
          2. Nomenclature of non-rubber carbon black
          A, pigment carbon black: mainly used as a colorant for coatings, inks, plastics, chemical fiber and leather chemicals, and can be divided into: high pigment channel black (HCC), high pigment furnace black (HCF) ), Medium Pigment Channel Black (MCC), Medium Pigment Furnace Black (MCF), Normal Pigment Channel Black (RCC), Normal Pigment Furnace Black (RCF) and Low Pigment Furnace Black (LCF)
          B, Conductive Carbon Black: with lower The resistivity of, can make rubber or plastic have a certain conductivity, used in different conductive or antistatic products, such as antistatic or conductive rubber, plastic products, cables; raw materials for dry batteries.
          C. Carbon black for plastics
          What kind of carbon black do you want to know? We can communicate with each other and learn from each other!
        我和表妺洗澡好紧作爱视频,我和亲妺在客厅作爱视频网站,护士表妺好紧竟然流水视频