HC Plastics News: Japan Jietai Geite developed a "PPS*1 retainer cylinder bearing" that is more resistant to heat and corrosion than ever before. Compared with metal appliances such as carbon steel and brass, the resin retainer greatly improves the lightweight, low torque, and lubrication properties of the bearing, but the heat resistance and corrosion resistance of the conventional polyamide material. There are limits to the use of hydraulic pumps, motors and compressors in refrigerant gas used in high temperature oils. Therefore, by developing a "retainer cylindrical bearing" using a PPS material, it is possible to apply in these environments and coexist with high performance.

Japan Jie Tai Ge Te: Developed a new lightweight PPS bearing for vehicles

Japan Jie Tai Ge Te: Developed a new lightweight PPS bearing for vehicles

JTEKT is a new company established after the merger of former Koyo Seiko and the original Toyota Machine. With JTEKT, KOYO, TOYODA and other brands. Through the merger of Koyo Seiko and Toyota Machines, the new company has the world's first market share in the steering system industry, and combined with the bearing industry, machine tool industry, and transmission industry, it has become the main four major industries, and the various industries are fully freely combined. It has become a manufacturer that can provide a world-class system in a comprehensive manner.

In the past, carbon steel, steel plate, and brass have been used for the material of the cage for the cylindrical bearing. In recent years, in order to improve the function of the bearing, a resin material excellent in lubricity and low torque has been used more and more. However, general resin retainer materials polyamide (66 nylon and 46 nylon) are limited in corrosion resistance and heat resistance, and are restricted in use in high temperature oils and in refrigerant environments such as compressors. Conventional carbon steel and brass retainers have to be used in these environments, but in severe environments, the demand for high bearing functions is increasing, so the development of resin retainers has begun.

Polyamide materials are highly resistant to corrosion and heat, but are difficult to form. In the "PPS spur ball bearing" developed in March 2015, the mass production experience has been accumulated, and the PPS material forming technology has been continuously improved, and this technology can be successfully transferred to the cylindrical bearing. The high temperature and the eating resistance are improved, and the application range of the resin is expanded. This product is used in hydraulic equipment, compressors, etc., to contribute to the lightweight and efficiency of components.

PPS plastic (polyphenylene sulfide) is a thermoplastic special engineering plastic with excellent comprehensive performance. Its outstanding features are high temperature resistance, corrosion resistance and superior mechanical properties. The world's top five PPS producers are Phillips, Toray, Ticona, Polyplastics and Japanese inks. Some units in China have had a small number of small tests, but they are unable to stabilize continuous production. The world's largest demand for PPS is 33% in Japan, 32% in North America, 19% in Western Europe, and 16% in Asia Pacific.

In summary, PPS products have the following three advantages:

1. Heat resistance and eating resistance are superior to heat resistance and eating resistance of a conventional resin material (polyamide).

2. Lightweight compared to brass holders, the holder weight is about 86% lighter

Approximately 11% lighter weight on the bearing as a whole

3. Low torque reduction of starting torque is reduced by approximately 10% compared to brass retainers

The lightweight of automobiles can be said to be a very hot topic at present, especially the introduction of 2017 policies and regulations, the stimulation of it is very obvious, rubber and plastic materials will play a big role in it, compared with metal, this material may still be Limited, but its development space will be much larger, and the market with the largest car lightweight will no doubt be in China.

Editor in charge: Zhang Lan

tert-butyl carbazate Basic Information
Product Name: tert-Butyl carbazate
CAS: 870-46-2
MF: C5H12N2O2
MW: 132.16
EINECS: 212-795-3
Mol File: 870-46-2.mol

tert-Butyl carbazate Structure

Tert-Butyl carbazate

tert-Butyl carbazate Chemical Properties
Melting point 39-42 °C(lit.)
Boiling point 63-65 °C0.1 mm Hg(lit.)
density 1.02
Fp 197 °F
storage temp. Store at RT.
solubility Soluble in ethanol and methanol.
color White to slightly yellow
Sensitive Moisture Sensitive

Tert-Butyl Carbazate CAS No. 870-46-2

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