Plastic Injection Clear Housing
The transparency of the plastic injection transparent shell matrix resin itself has a great influence on the transparency of PP plastic products. In order to improve PP transparency, a small amount of polyacrylate resin with good transparency and compatibility can be added.
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China's first high-end heavy truck, SITRAK heavy truck, launched by China National Heavy Duty Truck Co., Ltd. in cooperation with German company Manmann, was formally rolled out at China National Heavy Duty Truck Jinan Commercial Vehicle Co., marking China's heavy trucks entering the ranks of internationally advanced heavy trucks. 
As the largest heavy-duty vehicle manufacturer in China, in 2009, Sinotruk signed a strategic cooperation agreement with German-manner GmbH. German Mann Co., Ltd. obtained a stake of 25% plus one percent from China National Heavy Duty Truck with 560 million euros. At the same time, Sinotruk was synchronized. The introduction of a full set of advanced technologies from Mannheim Germany.
Cai Dong, Executive Director and President of China National Heavy Duty Truck (Hong Kong) Co., Ltd. introduced that the SITRAK series heavy trucks are positioned at the world-class high-end heavy trucks. It is China National Heavy Duty Truck Co., Ltd.'s product design, the same production line and process flow, strictly in accordance with Sinotruk and The company's joint development of quality-based product development principles for product design, production preparation and mass production release products.
It is understood that SITRAK Heavy Duty Truck adopts the world's most advanced MC11 (man Made in China D20) series of electronically controlled high pressure common rail engines exclusively introduced by China National Heavy Duty Truck. Its body strength and rigidity are large, and it possesses only a few core manufacturing technologies. High-end engine used. At the same time, the engine has good economy, low noise, and high integration. It is 2 dB lower than the noise of similar engines of the same type in the world, 25% less than the international engine of the same type, and has a long life, reaching the most advanced level of the international heavy truck engine, namely 1.5 million kilometers. Reduced car costs.
The relevant person in charge of the German MAN Commercial Vehicle Company stated that the core technology adopted by SITRAK heavy trucks keeps pace with the latest international mainstream technology, and it adopts Mann's quality and performance standards to test, and has world-class excellent quality.
Cai Dong said that the birth of the SITRAK brand marks the high-end heavy trucks of China National Heavy Duty Truck reaching the advanced level of international heavy trucks. This series of heavy trucks will meet the domestic users' need for imported heavy trucks and increase the level of China's heavy truck industry. 
(1) the inorganic nucleating agent mainly consists of ultra-fine talc powder and SiO2, and also includes calcium carbonate, mica powder, inorganic pigments and fillers, etc., which is cheap in price and rich in source, but has certain influence on the gloss and transparency of the products.
(2) organic nucleating agent organic nucleating agent is a kind of organics with low relative molecular weight, represented by sorbitol and its derivatives. It has good compatibility with matrix resin and can significantly improve product transparency and surface gloss.
(3) in the case of sorbitol, when the amount of nucleating agent exceeds 0.3%, the effect of transparency improvement is not obvious, and even decreases. However, when the dosage is less than 0.2%, the nucleation quantity is insufficient and the transparency is not increased enough. It can be seen that the amount of nucleating agent should be between 0.2-0.3%. Therefore, suitable nucleating agent content can better improve the transparency of PP.