Low-odor and low-friction-coefficient injection-molding skin material and preparation method thereof
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A low friction coefficient, skin material technology, applied in the field of thermoplastic elastomer material production and its blending modification, can solve the problems of affecting the service life of human health, the smell of the skin material, and the high cost of human and material resources, and achieve a delicate hand feel. Smooth, low friction coefficient, manpower saving effect
Inactive Publication Date: 2017-06-20
SHANDONG DAWN POLYMER CO LTD
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At present, most of the skin materials are made of PU extrusion calendering or PVC slush molding. The process steps are cumbersome, the cost of manpower and material resources is high, and the manufactured skin materials have a strong smell and are not resistant to friction, which seriously affects their service life. Therefore, it is of great significance to invent a high-efficiency, low-cost, low-odor, low-friction injection-molded skin elastomer material and its preparation method.
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Embodiment 1
[0021] The present embodiment provides a kind of low smell, low coefficient of friction injection molded skin material, comprise the high fluidity polypropylene of 25 parts by weight, the graft EPDM of 20 parts by weight, the POE of 15 parts by weight, the paraffin oil of 35 parts by weight, 1.5 parts by weight Parts (relative to rubber) of peroxide, 3 parts by weight of self-lubricating agent, and 2 parts by weight of anti-wear agent.
[0022] Wherein, the grafted EPDM is silane-grafted EPDM made by the company, the POE is conventional POE, and the polypropylene is high-fluidity polypropylene with a fluidity ≥ 85 (230°C*2.16KG). The paraffin oil described above is preferably environment-friendly paraffin oil, the peroxide is one or more of powder DCP, liquid initiator, BPIC, TBIC, and the anti-wear agent is two-stage grafting reaction type anti-wear agent, and the self-lubricating agent is one or more of modified polyethylene wax, erucamide, and oleamide.
[0023] This embod...
Embodiment 2
[0029] The main difference between this embodiment and Example 1 is that the high fluidity polypropylene of 20 parts by weight of the formula, the grafted EPDM of 20 parts by weight, the POE of 20 parts by weight, the paraffin oil of 35 parts by weight, 1.5 parts of ( Relative rubber) peroxide, 3 parts by weight of self-lubricating agent, 2 parts by weight of wear-resistant agent.
Embodiment 3
[0031] The main difference between this embodiment and Example 1 is that the high-fluidity polypropylene of 30 parts by weight of the formula, the grafted EPDM of 15 parts by weight, the POE of 15 parts by weight, the paraffin oil of 35 parts by weight, 1.5 parts of ( Relative rubber) peroxide, 3 parts by weight of self-lubricating agent, 2 parts by weight of wear-resistant agent.
[0032] A group of comparative test examples are listed below to illustrate the beneficial effects of the present invention.
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Abstract
The invention relates to a low-odor and low-friction-coefficient injection-molding skin material and a preparation method thereof. The skin material contains the following components in parts by weight: 25 parts of high fluidity polypropylene, 20 parts of grafted EPDM, 15 parts of POE, 35 parts of paraffin oil, 1.5 parts (relative to the use amount of rubber) of peroxide, 3 parts of a lubricant and 2 parts of a wear-resisting agent. The preparation method mainly comprises a process of oil-charge pre-dispersion, a process of mico-crosslinking reaction and a process of water crosslinking of silane grafted EPDM and granulation, and an exhausting twin-screw extruder is adopted in an extrusion granulation process. Methods of water crosslinking of grafted EPDM, mico-crosslinking of ethylene-octylene copolymer peroxide, heterogeneous-state removal of low molecular-weight polymers and the like are creatively and organically combined together, an elastic phase with excellent resilience, low odor and high surface rigidity is formed, and meanwhile, the skin material with excellent fluidity is prepared by virtue of degradation of peroxide to a polypropylene material; and the exhausting twin-screw extruder is introduced in the preparation process for ash removal, so that the odor of the material is substantially reduced. The injection-molding skin material for an automobile is resistant to wear, low in odor and good in machining formability, and the human, physical and financial resources of customers are saved.
Description
technical field [0001] The invention relates to the technical field of thermoplastic elastomer material production and its blending modification, in particular to an injection molding skin material with low odor and low friction coefficient and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, people pay more and more attention to the vision, feeling and taste of automobile interiors. A good skin material not only requires extremely low odor, but also requires good tactile and visual enjoyment. Low odor and friction resistance are the requirements for the material. At present, most of the skin materials are made of PU extrusion calendering or PVC slush molding. The process steps are cumbersome, the cost of manpower and material resources is high, and the manufactured skin materials have a strong smell and are not resistant to friction, which seriously affects their service life. Therefore, it is of great signi...
Claims
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Application Information
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