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2020-09

Nitrogen introduction

The chemical formula is N2, which is a colorless and odorless gas under normal conditions, and generally nitrogen is less dense than air. Nitrogen accounts for 78.08% (volume fraction) of the total atmosphere and is the main component of air. Under standard atmospheric pressure, when cooled to -195.8°C, it becomes a colorless liquid, and when cooled to -209.8°C, liquid nitrogen turns into a snow-like solid. The chemical nature of nitrogen is inactive, and it is difficult to react with other substances at room temperature, so it is often used to make preservatives. However, under high temperature and high energy conditions, it can undergo chemical changes with certain substances to produce new substances useful to humans. Basic

2020-09-02

02

2020-09

Introduction of PTFE

Tetrafluoroethylene is a polymer of tetrafluoroethylene. English abbreviation is PTFE. The basic structure of polytetrafluoroethylene is. - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 -. It itself is not toxic to humans, but perfluorooctanoic acid ammonium (PFOA), one of the raw materials used in the production process, is considered to have carcinogenic effects.

2020-09-02

02

2020-09

Technical Information

The glass cloth produced in my country is divided into two types: non-alkali and medium-alkali. Most of the foreign countries are E-GLASS non-alkali glass cloth. Glass cloth is mainly used in the production of various electrical insulating laminates, printed circuit boards, various vehicle bodies, storage tanks, boats, molds, etc. Medium-alkali glass cloth is mainly used in the production of plastic-coated packaging cloth and in corrosion-resistant occasions. The properties of fabrics are determined by fiber properties, warp and weft density, yarn structure and weave. The warp and weft density is determined by the yarn structure and weave pattern. The dense warp and weft plus yarn structure determines the physical properties of the fabric, such as weight, thickness and breaking strength.

2020-09-02

02

2020-09

dry calculation

dry calculation

2020-09-02

02

2020-09

magnetic rod

Stainless Steel Introduction

2020-09-02

02

2020-09

Stainless Steel Introduction

Stainless steel (StainlessSteel) is the abbreviation of stainless acid-resistant steel, which is resistant to weak corrosive media such as air, steam, water, or has stainless steel. ) Corroded steel is called acid-resistant steel. the

2020-09-02

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