With the development of automobile industry towards the direction of lightweight, the application of plastics in automobile is increasing, mainly including interior parts, exterior parts and functional structural parts. As far as interior decoration application is concerned, safety, environmental protection and comfort are the main purposes.

At present, Weihai Harmony automotive interior company points out that the automotive interior parts made of plastic mainly include: instrument panel, door panel, air conditioning outlet, defogging grille, handle, glove box, ashtray, sunshade and overhead light. For safety, environmental protection and comfort, the general requirements of interior materials must have the following characteristics: good strength and stiffness, can withstand a certain impact load; Good dimensional stability, especially high temperature stability; Good linear uv resistance and weather resistance, can ensure more than 10 years of service life; Good solvent resistance; Low odor; Matte.

In general, low odor and matte properties are especially important for interior materials on the premise of satisfying basic mechanical and thermal properties. This is because automotive interior parts are in a relatively closed environment for a long time. Under certain temperature conditions, the small molecular organic matter in plastic is easy to migrate to the surface of plastic products and volatilize out, causing harm to human body. In addition, if the matte quality of interior materials is not good, it is easy to lead to strong reflected light in the cab, which not only affects the driver's vision, but also easily causes discomfort and fatigue, resulting in traffic accidents. To that end, automakers are taking extra care when choosing interior materials.

Weihai Harmony car interior company said from the type of interior materials, the dashboard is mostly used PP, ABS, ABS+PC or SMA+GF and other materials, the door panel is mostly used PP, PP+EPDM, ABS or PC/ABS and other materials, defogging gratings, handles and glove boxes are used ABS, PC/ABS or PP and other materials, Air conditioning outlets generally use ABS, PC/ABS or PA/ABS materials.

According to the application characteristics of automotive interior, Weihai Harmony Automotive Interior Co., Ltd. produces heat-resistant ABS, PC/ABS, PA/ABS and SMA+GF materials.

In addition, PC/ABS materials mainly have the following three grades: PC/ABS HAC8240, PC/ABS HAC8250 and PC/ABS HAC8260, which meet the TL52231, TL52231A and TL52231B standards respectively. At the same time, PC/ABS HAC8250 and PC/ABS HAC8260 also meet the QK002-412 and GMP002 standards of Shanghai GENERAL Motors, so they are listed in the supply list of Shanghai General Motors. As a kind of material with good fluidity, heat resistance, dimensional stability and adhesion, as well as the advantages of short molding cycle and high rigidity, SMA+15GF/HSG5415 has been applied in Shanghai General Automobile Company's instrument panel body.

In order to reduce the emission of organic volatile matter from interior parts, Weihai Harmony Automobile Interior Co., Ltd. meets the emission standard of VW50180 of Volkswagen.

Among them, the PA/ABS alloy HNB0270 material combined with PA excellent chemical corrosion resistance, good thermal stability, dimension stability and ABS excellent shock resistance, making it very high impact strength, excellent thermal stability, resistance to chemical corrosion resistance and dimensional stability are very good, and can bring special surface and a soft matte effect. PA/ABS HNB0270 also has good shock absorption and sound absorption performance by blending crystalline material with amorphous material, so it is very suitable for automotive interior applications. The material has been used in logo 206 and Triumph models.