Hollow blow-molding automobile induction manifold material and preparation method thereof

Abstract

The invention relates to an automobile induction manifold material and a preparation method thereof and in particular relates to a hollow blow-molding automobile induction manifold material and a preparation method thereof. The material prepared by the invention is prepared from the following components in parts by weight: 40 to 60 parts of polypropylene, 5 to 30 parts of polypropylene with high melt strength, 1 to 10 parts of high-density polyethylene, 30 to 50 parts of reinforcing fiber, 1 to 10 parts of an interface modifying agent, 1 to 10 parts of a flowing synergist, 0.5 to 3 parts of anantioxidant, 0.5 to 4 parts of a lubricating dispersant and 0.2 to 2 parts of a nucleating agent. The invention further discloses the preparation method of the hollow blow-molding automobile induction manifold material. The material provided by the invention has good sag resistance and melt tensile strength; optimized regulation and control of wall thickness of a product can be realized in a blowmolding process of a manifold, so that the material has good mechanical properties and high and low temperature resisting properties; the product has high size stability and good welding performance;compared with a nylon manifold, the weight reduction exceeds 20 percent and same-speed production of an existing molding technology and a post-molding technology are met; furthermore, the preparationmethod has the advantages of shorter molding period, low production cost and high product yield and industrialized production is easy to realize.

Description

technical field [0001] The invention relates to an automobile intake manifold material and a preparation method thereof, in particular to a hollow blow molding automobile intake manifold material and a preparation method thereof. Background technique [0002] The automobile intake manifold is a key component of the automobile engine. At present, the intake manifold materials on the market are mainly glass fiber reinforced nylon materials. Noise, the requirements also include that there is no need to make major changes to the existing mold and part design, it is an environmentally friendly material, and it can meet the same speed production and post-forming process of the existing molding process; coupled with the lower purchase price of the main engine factory, it means Polyamide, that is, nylon, can no longer meet the current demand. [0003] Fiber-reinforced polypropylene has long-term heat resistance and chemical resistance, vibration resistance, high strength, high rigi...

AI Technical Summary

Problems solved by technology

However, for the traditional glass fiber reinforced polypropylene material, many challenges and difficulties are faced when using the blow molding process to prepare the intake manifold. Due to the poor anti-sag performance during the blow molding process of the intake manifold, the product is easily broken during the inflation process. 2. The difference in flow velocity between glass fiber and polypropylene is easily amplified during the blow molding process, resulting in floating on the product surface. At the same time, due to the dispersion of glass fibers and the deformation of parts caused by floating fibers, the welding strength of the manifold is poor, and the later sealing and high-pressure blasting tests cannot be passed smoothly; 3. Due to the poor transverse tensile properties of polypropylene melt , it is difficult to control the wall thickness of the blow molding intake manifold

Therefore, the general qualification rate of glass fiber reinforced polypropylene blow molding intake manifold products is not high

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