The main differences between PC and PU infrared spectra

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List of contents for this article:

• 1、Analysis of polymer materials
• 2、What is the national standard number of the infrared spectrum identification method for leather materials
• 3、What is the difference between pc and pu?

Analysis of polymer materials

1. Polymer material analysis is a method that uses instrumental analysis methods to conduct qualitative and quantitative analysis of the main components, fillers, plasticizers, etc. of polymer materials. It covers services such as main component identification, rubber type identification, component analysis, and inorganic filler testing. It involves plastics, rubber, fibers, coatings, organic solvents and other product types. The specific analysis content is as follows: Service content Identification of main components of polymer materials: Determine the main polymer types of materials.

2. Other materials: ammonia NH? Content, silver nitrate AgNO? Purity test (GBT 670-2007). Organic material analysis and principal component identification: Distinguish between polyethylene (PE) and polypropylene (PP) materials. Inorganic filler testing: Test the content of calcium carbonate and glass fiber in plastics. Elemental test: Determine the content of Zn, Cu and other additives in rubber. Polymer material analysis rubber type identification: Distinguish between natural rubber (NR) and styrene butadiene rubber (SBR).

3. Organic material composition analysis is a key technology. It involves multiple aspects of analysis: polymer material analysis: plastics: such as polyethylene, polypropylene, polyvinyl chloride, etc. Rubber: Including chloroprene rubber, natural rubber, styrene butadiene rubber, etc. Fiber: It involves natural fibers and synthetic fibers. Coating analysis: Including grease paint, natural resin paint, phenolic paint, asphalt paint, alkyd paint and other types.

4. R & D support: Analyze the composition of competitors 'products and guide the formulation design of new polymer materials.

5. As a synthetic polymer material, acrylic tape is not a panacea. Choosing it wisely begins with a comprehensive understanding of its characteristics. Core advantages: Excellent weather and aging resistance: This is one of the most outstanding advantages of acrylic glue. Its molecular structure has natural resistance to ultraviolet light, ozone, and hot and humid environments. It can maintain viscoelasticity and adhesive strength for a long time, and is not easy to yellowing or embrittlement. It is especially suitable for long-term application outdoors and in harsh environments.

What is the national standard number of the infrared spectrum identification method for leather materials

There are currently two national standards and group label numbers related to infrared spectral identification of leather materials mainly published GB/T 30695 - 2014. This standard is for artificial leather with fabric as the substrate and polyvinyl chloride (PVC) or polyurethane (PU) as the main coating material., stipulates the corresponding infrared spectral identification methods and verification methods. The T/CQBSXY 1025 - 2023 label belongs to the general method standard for leather material identification, which includes infrared spectral identification methods such as direct testing method, difference spectrum method, and purification method.

Currently, there are three main public national standards and industry standards used to identify leather materials by infrared spectroscopy. The core information is organized as follows: General leather and sofa leather identification standard number: GB/T 16799 - 2019 Application scenarios: Leather sofa leather material identification Infrared characteristic reference: Leather has characteristic absorption peaks at 1650cm (amide I) and 1550cm (amide II), artificial leather has no such characteristic peaks.

- T/CQBSXY 1025 - 2023 "General Method for Identification of Leather Materials": A general leather identification standard, in which infrared spectroscopy identification includes three practical methods: direct testing method, difference spectroscopy method, and purification method.

What is the difference between pc and pu?

Different mixing materials: PU cement is doped with other mixing materials in addition to portland cement, while PC cement is also doped with other mixing materials in addition to portland cement, such as gypsum. Different prices: PU cement is more expensive than PC cement. Different firmness: PU cement is stronger than PC cement. Different application fields: PU cement is mainly used for sound insulation, heat insulation and insulation of buildings, while PC cement is mainly used for load-bearing structures and frames of buildings.

PC and PU materials have their own advantages and disadvantages and are suitable for different uses and occasions. According to a query on Huawei's official website, PC is the abbreviation for polycarbonate. It is a colorless and transparent amorphous thermoplastic material with excellent electrical insulation, extensibility, size stability and chemical corrosion resistance. It has high strength, heat resistance and cold resistance, and also has the advantages of self-extinguishing, flame retardant, non-toxic, and colorability.

Pu wrap it up. With different raw materials, most pu fabric bags are made with leather, which is completely non-toxic and odorless, good-looking and easy to clean. Although PC has certain strength, it is less flexible and raw materials. Different grades. Pu fabrics look high-end and high-end products. PCs are mainly synthetic with poor processing characteristics. They are middle and low-end products.

Different usage scenarios have different physical properties. Different usage scenarios: PU is widely used and is used more in the decoration of bags, clothing, shoes, vehicles and furniture, while PC is used more in the electrical and commercial equipment, appliances, and transportation industries.

It has excellent wear resistance, tear resistance and chemical corrosion resistance, and is characterized by softness, elasticity and durability;PC is a high-strength, high-toughness plastic material with excellent impact resistance and high temperature resistance, and has high transparency. Different uses: PU materials are often used to make leather products, shoes, furniture, etc.;PC materials are often used to make glasses, helmets, phone case and other products that require high strength and transparency.

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