High-apparent mass blowing micro foaming automotive air duct material and preparation method thereof

An apparent quality, micro-foaming technology, applied in the field of materials, can solve problems such as poor internal and external appearance quality, achieve good dimensional stability, good rigidity, and reduce wind resistance.

Inactive Publication Date: 2019-02-22
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides high-quality blow-molded micro-foamed automobile air duct material and its preparation method. Under the premise of ensuring the light weight of the product, the material has achieved good tensile properties in...

Method used

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  • High-apparent mass blowing micro foaming automotive air duct material and preparation method thereof
  • High-apparent mass blowing micro foaming automotive air duct material and preparation method thereof
  • High-apparent mass blowing micro foaming automotive air duct material and preparation method thereof

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Embodiment

[0040] A preparation method for blow molding micro-foamed automobile air duct material with high apparent quality, comprising the following steps:

[0041] Step 1: Add 60-85 parts of polyethylene, 1-10 parts of filler, 1-10 parts of hyperdispersant, 5-20 parts of toughening agent, 5-15 parts of foaming aid, and 1-5 parts of nucleating agent , 0.5-2 parts of other additives are mixed in the mixer for 2-4 minutes, added to the twin-screw extruder through the hopper, granulated at a temperature of 150-220 ° C, and the screw speed is 300-600 r / min to obtain blow-molded poly Vinyl composites;

[0042] Step 2: Fully mix the blowing agent in the high-mixer in advance according to the parts by weight, and then add it into the single-screw blow molding machine from the side feed port; at the same time, add the polyethylene composite material obtained in step 1 into the single-screw blow molding machine Blow molding machine barrel; blow molding at a temperature of 150-220°C to obtain a...

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Abstract

The invention discloses a high-apparent mass blowing micro foaming automotive air duct material and a preparation method thereof. The material disclosed by the invention contains the following components in parts by weight: 60-85 parts of polyethylene, 1-10 parts of a filling agent, 1-10 parts of a hyperdispersant, 5-20 parts of a flexibilizer, 1-10 parts of a foaming agent, 5-15 parts of a blowing promoter, 1-5 parts of a nucleating agent and 0.5-2 parts of other additives. The invention further discloses a preparation method of the high-apparent mass blowing micro foaming automotive air ductmaterial. The material disclosed by the invention has the characteristics that the molded foam is small in particle size, the foam density is high, the inner and outer walls of blowing air duct products have high apparent mass and the like, and wind resistance of the product is reduced; the product has the characteristics of being light in weight, excellent in dimensional stability, short in molding cycle, high in molding yield and the like; and meanwhile, the performance requirements on odor and VOC (Volatile Organic Compounds) in automotive original equipment manufacturers are met.

Description

technical field [0001] The invention relates to an automobile air duct material and a preparation method thereof, in particular to a blow-molded micro-foaming automobile air duct material with high apparent quality and a preparation method thereof, belonging to the field of material technology. Background technique [0002] The automotive air duct material is located at the connection between the automotive air conditioner and the cockpit, and is responsible for effectively transferring the hot and cold air generated by the air conditioner to the interior of the cockpit, producing cooling or heating effects, and ensuring the comfort of the cockpit in high and low temperature environments . Therefore, there are strict requirements on its tightness and its pipe wall's resistance to air flow. [0003] Micro-foaming blow molding technology has been used in the application of air duct products, which can not only significantly reduce the weight of original products, save energy ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/28C08L35/00C08L23/16C08K3/34C08K3/26C08K13/02C08J9/10C08J9/08
CPCC08J9/08C08J9/105C08J9/107C08J2203/02C08J2203/04C08J2203/18C08J2323/06C08J2323/08C08J2423/16C08J2423/28C08K3/34C08K13/02C08K2003/265
Inventor 王滨刘曙阳蒋顶军
Owner NANJING JULONG SCI&TECH CO LTD
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