Low-emission, low-odor automobile composite polypropylene material
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A technology for composite polypropylene and foamed polypropylene, which is applied in the direction of silicon compounds, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problem of increasing the content of ketones in composite materials, without considering the precipitation on the surface of glass fibers and Residual small molecular substances, volatiles cannot be completely removed at the same time, etc., to achieve the effect of reducing the generation of small molecules, high filling, and low cost
Inactive Publication Date: 2017-12-26
BEIJING INST OF AEROSPACE TESTING TECH +1
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The above published patents cannot completely remove the small molecular substances of the raw materials and additives themselves and the volatiles generated during the process through simple physical adsorption or chemical reacti
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Embodiment 1
[0040]A low-emission, low-odor composite polypropylene material for automobiles, consisting of the following mass percentages:
[0042] The adsorbent is prepared according to the mass ratio of self-made inorganic porous adsorption material and foamed polypropylene stripping agent in a ratio of 1:1.
Embodiment 2
[0044] A low-emission, low-odor composite polypropylene material for automobiles, consisting of the following mass percentages:
[0046] The adsorbent is prepared according to the mass ratio of self-made inorganic porous adsorption material and foamed polypropylene stripping agent in a ratio of 1:1.5.
Embodiment 3
[0048] A low-emission, low-odor composite polypropylene material for automobiles, consisting of the following mass percentages:
[0050] The adsorbent is prepared according to the mass ratio of self-made inorganic porous adsorption material and foamed polypropylene stripping agent in a ratio of 1:1.5.
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Abstract
The invention provides a low-emission, low-odor automobile composite polypropylene material and a preparation method thereof. The low-emission, low-odor automobile composite polypropylene material is prepared from the following materials in percentage by weight: 55 to 85 percent of polypropylene; 0.8 to 3.5 percent of odor emission adsorbent; 15 to 40 percent of inorganic filler; 1 to 15 percent of flexibilizer; 1 to 6 percent of compatilizer; 0.2 to 1 percent of antioxidant; and 0.2 to 1 percent of anti-UV agent. The preparation method includes the following steps: the polypropylene resin, the compatilizer and the other auxiliaries are added according to a weight proportion requirement into a screw via a main feed inlet and conveyed, and the inorganic filler and the odor emission adsorbent are fed into a melting section by a side feeder. The invention adopts both an adsorption technique and a devolatilization technique, the odor adsorbent which is a self-made novel inorganic porous adsorbing material is adopted and supplemented with foamed polypropylene as a stripping agent, and by vacuum extraction, small-molecular volatile substances which are produced in the process of material processing can be fully removed; the preparation process is simple, and the low-emission, low-odor automobile composite polypropylene material has the advantages of high filling, low cost and low shrinkage.
Description
technical field [0001] The invention belongs to the technical field of material modification, and relates to a modified polypropylene material for low-emission and low-odor automobiles, in particular to the preparation of an odor adsorbent and its modification to polypropylene. Background technique [0002] Polypropylene (PP) plays a very important role in the development of automobile lightweight due to its low density and excellent physicochemical properties. The quality of automotive interior parts determines the grade and grade of the entire vehicle, and needs to meet the requirements of comfort, appearance, environmental protection and safety. However, general-purpose PP has high shrinkage rate, poor dimensional stability, easy warping and deformation, poor low-temperature toughness, Poor aging resistance and other shortcomings limit the application of PP in the automotive field. Therefore, general-purpose PP must be modified. In the process of PP modification, some au...
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