He joined FAW as a mechanical accessory from the early days of liberation, and later worked on the parts and components industry in Beijing. He has since become a prominent expert in the automotive industry. Chen Guangzu has been working hard for China’s automotive industry for decades. During this period, his many industry stories were It is praised as a milestone on the road to automobile development.

Chen Guangzu told reporters that the development of China's parts and components industry can be roughly divided into four stages. The first stage is before 1956. Parts and parts of China are synchronized with the development of the whole vehicle, but at this time, the parts and components industry is mainly maintenance. It did not involve the industry; the second phase was from 1956 to 1978, during which the parts and components industry was supported and maintained. At that time, many parts factories were established throughout the country, such as Beijing Carburetor Factory, Changsha Electrical Factory, and Wuhan Parts Factory. At that time, most of the production of spare parts was based on imitating foreign technology, and the industry did not develop substantively; the third stage was from 1978 to 2000. After the start of localization in 1984, the country began to introduce foreign products through localization. Parts technology, Shanghai and Beijing are all under joint venture introduction. At that time, Beijing had a lot of hutong parts factories. The improvement of industrial policies also provided all-round development for the parts and components industry. The fourth phase was after 2000, with the informatization of parts and components. With a large increase in the level, China's auto parts industry has a certain degree of competitiveness, but at the same time it also encountered a development bottleneck.

As the core technologies of many key components are not mastered, China's parts and components companies are still in a passive state.

In the mid-1990s, due to the imperfect system, Beijing's parts and components industry developed slowly. Chen Guangzu said: “In recent years, the parts and components industry in Beijing has begun to recover. As Beijing's more famous parts suppliers are Hainachuan, Xuchang Far East, etc. These companies have adjusted themselves in recent years in order to adapt China's economic market has developed."

He also said that the biggest problem in China's parts and components industry is that the industry's overall informatization level is not enough. Due to the industry's overall institutional reasons, more Chinese parts and components manufacturers are only self-produced, and they are not aware of the industrial information sharing. importance. In addition, he believes that the research on key technologies for key components is not enough, and that China's parts industry is still at a low level of production.

Chen Guangzu once said that in the future, China's parts and components industry has a long process of development, and the result is only two, either marginalized, or catch up with the world advanced level. He said: "In addition to the government's macro support plan, the current industry also needs to recognize that the combination of information and industry plays an important role in promoting the manufacturing industry."

Product List

Introduction

The most common inorganic flame retardants are the hydroxides or aluminium and magnesium. Aluminium trihydroxide (ATH) is by far the most widely used Flame Retardant on a tonnage basis. It is inexpensive, but usually requires higher loadings in polymers of up to more than 60%, because the flame retardant mechanism is based on the release of water which cools and dilutes the flame zone. Magnesium hydroxide (MDH) is used in polymers which have higher processing temperatures, because it is stable up to temperatures of around 300 C versus ATH which decomposes around 200 C.

Fine precipitated ATH and MDH (grain size < 2um) are used in melt compounding and extrusion of thermoplastics like cable PVC or polyolefins for cables. For use in cable, ATH and more often MDH are coated with organic materials to improve their compatibility with the polymer. Coarser ground and air separated grades can be used in liquid resin compounding of thermosets for electrical applications, seats, panels and vehicle parts.

A number of other inorganic substances show flame retarding effects and are used in commercial applications. Most of them are used as synergists i.e. they enhance the performance of other flame retardants or they are used for specific effects like the suppression of smoke formation. For example, borates are used as mixtures of boric acids and borax as flame retardants for cellulose (cotton) and of zinc borate for PVC and other plastics like polyolefins, elastomers, polyamides, or epoxy resins. In halogen-containing systems, zinc borate is used in conjunction with antimony oxide, while in halogen-free systems it is normally used in conjunction with aluminium trihydroxide, magnesium hydroxide, or red phosphorus. In some particular applications zinc borate can be used alone. Boron containing compounds act by stepwise release of water and formation of a glassy coating which protects the surface.

Zinc compounds were initially developed as smoke suppressants for PVC (Zinc hydroxystannate). Later it was found that they also act as flame retardants in certain plastics mainly by promoting char formation.

Intumescent flame retardant systems expand to produce foams. They are used as coatings not only to protect combustible materials such as wood and plastics, but also steel structures in buildings, because steel loses its strength when exposed to high temperatures in a fire. The intumescent effect is achieved by combining an acid source like ammonium polyphosphate, a source of carbon, compounds which release noncombustible gases for blowing the foam on thermal decomposition and resin binders to stabilise the foam.

Expandable graphite is manufactured from flake graphite by treatment with strong acids like sulphuric or nitric acid. The acid is trapped in the crystal layers of the graphite ("intercalated"). When it is heated, the graphite starts to expand up to several hundred cm3 per gram, forming a protective layer for the polymer. Expandable graphite is used in plastics, rubbers (elastomers), coatings, textiles and especially in polymeric foams. To achieve an optimum flame retarding effect, the use of synergists like ammonium polyphosphate or zinc borate is often necessary. The black colour of graphite limits its applicability in some cases.

Nanocomposites have been gaining increasing attention since the late 1990s as potential new flame retardants. Nanocomposites

are polymer layered silicates based on aluminosilicate clay minerals like montmorillonite, composed of layers with gaps (gallery spaces) in between. These silicates have the ability to incorporate polymers. Research with nanocomposites has focused on plastics like polymethylmethacrylate (PMMA), polypropylene, polystyrene, and polyamides. Nanocomposites particularly prevent dripping and promote char formation. Therefore, they have been used as synergists in some polymer / flame retardant combinations. However, they require special processing and for the time being are not considered to become viable stand-alone flame retardants.

Other inorganic fillers like talcum or chalk (calcium carbonate) are sometimes denoted as flame retardants, but they do not specifically interact with the ignition process. On the contrary, simply by diluting the combustible polymer they reduce its flammability and fire load.

Inorganic Flame Retardant

Inorganic Flame Retardant Additives, Inorganic Flame Retardant Polymers, Inorganic Flame Retardant Chemicals,Ammonium Polyphosphate

Shandong Novista Chemicals Co.,Ltd (Novista Group) , https://www.novistachem.com