Light-weight automobile pillar protecting plate and preparing method thereof

An automotive pillar guard, lightweight technology, applied in vehicle parts, other household appliances, household appliances, etc., can solve the problems of decreased tensile strength, reduced performance strength of parts, etc., and achieves low production cost, low VOC content, Easy to achieve the effect of industrialization

Inactive Publication Date: 2016-12-07
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common problem of the current micro-foamed parts is that after micro-foaming, the performance of the part, especially the strength, is very seriously reduced, especially after the weight is reduced by 15%, the tensile strength is reduced by more than 50%, resulting in the automobile pillar protection. The board cannot normally use micro-foaming technology to achieve lightweight

Method used

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  • Light-weight automobile pillar protecting plate and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix 3 parts of polyethylene glycol, whiskers and sodium bicarbonate in a weight ratio of 6:1:3 to form a mixture, add this mixture to a twin-screw extruder, and prepare a functional masterbatch by extrusion; 60 parts of polypropylene with a melt index of 20g / 10min and a crystallinity of 75%, 10 parts of branched polypropylene with a melt strength of 26cN and a melt index of 5g / 10min, 0.5 part of sorbitol, 0.5 part of erucamide, resistance 0.6 parts of oxygen agent 1010, 0.4 parts of antioxidant 168, and 5 parts of silicone are put into a high-speed mixer and mixed for 3 minutes to obtain a mixture; the mixture obtained above is added through the main feed hopper of the twin-screw extruder, and talcum powder 20 parts are added to the barrel through side feeding, plasticized, extruded, stretched, air-dried, and pelletized to obtain the main composite material suitable for lightweight automobile pillar guards.

[0043] The composite material obtained in the above steps and th...

Embodiment 2

[0046] Mix 8 parts of ethylene-vinyl acetate copolymer, carbon nanotubes, and azodicarbonamide in a weight ratio of 7:1:2 to form a mixture, add this mixture to a twin-screw extruder, and successfully prepare by extrusion Energy masterbatch; 74.5 parts of polypropylene with a melt index of 5g / 10min and a crystallinity of 80%, 5 parts of branched polypropylene with a melt strength of 22cN and a melt index of 3g / 10min, 0.2 parts of sodium benzoate, polyethylene 1 part of wax, 0.1 part of antioxidant N,N'-dibenzylhydroxylamine, 0.2 part of antioxidant 168, and 1 part of polytetrafluoroethylene are put into a high-speed mixer and mixed for 6 minutes to obtain a mixture; combine the above-obtained mixture It is added through the main feeding hopper of the twin-screw extruder, and 10 parts of calcium carbonate is added to the barrel through side feeding, and plasticized, extruded, stretched, air-dried, and pelletized to obtain a column guard suitable for lightweight automobiles. The ...

Embodiment 3

[0050] Mix 2 parts of polyethylene, nano-Montorite, and azobisisobutyronitrile in a weight ratio of 6:2:2 to form a mixture, add this mixture to a twin-screw extruder, and prepare a functional masterbatch by extrusion ; Polypropylene with a melt index of 15g / 10min and a crystallinity of 77%, 79 parts, a branched polypropylene with a melt strength of 25cN and a melt index of 4g / 10min, 6 parts, aromatic heterocyclic organophosphate 0.3 parts, B 0.7 parts of bis-stearamide, 0.3 parts of antioxidants 1010, 0.2 parts of antioxidants 168, and 1.5 parts of polytetrafluoroethylene were put into a high-speed mixer and mixed for 4 minutes to obtain a mixture; the mixture obtained above was extruded through a twin screw The main feeding hopper of the machine is added, and 10 parts of kaolin are added to the barrel through side feeding, and plasticized, extruded, stretched, air-dried, and pelletized to obtain the main composite material suitable for lightweight automobile column guards. . ...

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Abstract

The invention belongs to the technical field of materials, and particularly discloses a light-weight automobile pillar protecting plate and a preparing method thereof. The light-weight automobile pillar protecting plate comprises a main-body composite material of the light-weight automobile pillar protecting plate and fabric for covering the main-body composite material of the light-weight automobile pillar protecting plate. The main-body composite material is prepared from, by weight, 60 parts to 79 parts of polypropylene, 10 parts to 20 parts of mineral powder, 5 parts to 10 parts of branched polypropylene, 0.2 part to 0.5 part of nucleating agent, 0.2 part to 1 part of antioxygen, 0.5 part to 1 part of lubricant, 1 part to 5 parts of scratching resisting assistant and 3 parts to 10 parts of functional master batch. According to the light-weight automobile pillar protecting plate and the preparing method, the micro-foaming technology and the in-mold decorating technology are combined, and the weight of a micro-foaming pillar protecting plate is reduced by 18% or above under the reinforcing effect of the fabric; under the condition, the strength of a workpiece can meet and even be higher than the requirements of the current automobile pillar protecting plate material standards, and the lightweight of automobile interior parts is achieved.

Description

Technical field [0001] The invention belongs to the technical field of materials and relates to the field of automobile pillar guards, in particular to a lightweight automobile pillar guard and a preparation method thereof. Background technique [0002] Under the dual pressure of energy crisis and environmental pollution, lightweight has become an inevitable trend in the development of the automobile industry. The polypropylene micro-foam material has a unique dense surface layer and foam core layer structure, which can significantly reduce the weight of the parts, realize the lightweight of the car, and ultimately realize energy saving and environmental protection. However, the general problem with the current micro-foamed parts is that after the micro-foaming, the performance of the parts, especially the strength, is very severe, especially after the weight is reduced by 15%, the tensile strength drops by more than 50%, resulting in automobile pillar protection. The board cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L71/02C08L83/04C08L23/08C08L23/06C08K13/04C08K13/02C08K7/24C08K5/20C08K5/134C08K5/526C08K5/098C08K3/34C08J3/22C08J9/08C08J9/10B29C44/04B29C44/12B29K23/00B29L31/30B62D25/04B62D29/04
CPCC08L23/12B29C44/04B29C44/12B29K2023/12B29L2031/3005B62D25/04B62D29/04C08J3/226C08J9/08C08J9/103C08J2203/02C08J2203/04C08J2323/12C08J2423/06C08J2423/08C08J2471/02C08K2201/011C08L2203/14C08L2205/025C08L2205/035C08L71/02C08L83/04C08K13/04C08K5/20C08K5/1345C08K5/526C08L23/0853C08K7/24C08K5/098C08L23/06C08K13/02C08K3/346C08L23/0815C08K3/04
Inventor 王滨刘曙阳周勇聂春鲁宏升
Owner NANJING JULONG SCI&TECH CO LTD
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