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A kind of production process of passenger car air duct with polyurethane scrap mold making and three-dimensional core material structure polyurethane foam

A polyurethane and scrap technology, which is used in household appliances, other household appliances, household components, etc., can solve the problems of insignificant weight loss and long production cycle, and achieve the effect of reducing the cost of molds, reducing the amount of use, and strengthening the composite structure.

Active Publication Date: 2020-01-07
GUIZHOU HUAYUN AUTOMOBILE DECORATING PART MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of product has high hardness, and can meet the standard requirements of JT / 1095-2016 through formula adjustment, but the weight loss is not obvious, and the production cycle is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The production process of passenger car air duct with three-dimensional core structure polyurethane foam, the steps are as follows:

[0038] 1. Using polyurethane scraps to make molds, the specific steps are as follows:

[0039] 1) Preparation before mold making: collect polyurethane scraps in a centralized manner, crush and process the collected polyurethane scraps to make granular materials with a diameter of 3-5 mm, and then fully stir and infiltrate the polyurethane scraps with resin;

[0040] The polyurethane scraps collected above are polyurethane glass fiber reinforced hard foaming recycled materials, and the polyurethane glass fiber reinforced hard foaming scraps are made into granular materials with a diameter of 3 to 5 mm by using a shredder without special treatment. Mix and stir, after 20-30 minutes, the resin and scraps are fully infiltrated.

[0041] 2) Model processing: According to the pre-designed drawings, the workpiece model for mold making is produc...

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Abstract

The invention discloses a passenger car air channel production technology adopting three-dimensional core material structure polyurethane foaming. By means of the method of additionally arranging a heat preserving layer filled through polyurethane leftover materials, compared with an existing foaming mould manufacturing technology, the heat preserving performance of the mould can be better, glassfiber has excellent toughness and strength, by means of reasonable preparation, the service life of the mould can be prolonged, resin is added into the leftover materials, the mould can have coagulability, and forming of the mould can be promoted. The polyurethane glass fiber enhanced hard foaming leftover materials are used as mould filler, recycling and reusing of resources can be achieved, andthe cost investment of the mould is reduced. By means of the form of adding the heat preserving layer for the mould, polyurethane materials keep the constant temperature in the transferring and foaming process, and the good mobility is achieved. Three-dimensional core materials are used, the use quantity of the polyurethane materials can be reduced, weight reduction of products is achieved, and the production period is shortened.

Description

technical field [0001] The invention relates to the field of automobile interior decoration production, in particular to a production process of a passenger car air duct made of polyurethane scraps and polyurethane foam with a three-dimensional core material structure. Background technique [0002] At present, the country pays more and more attention to environmental protection, and advocates resource recycling and reuse. In recent years, with the rise of new energy vehicles, lightweight has become one of the channels to reduce weight and consumption, and increase voyage. [0003] In the current passenger car / bus air duct, flax fiberboard + PVC, glass fiber reinforced rigid foam + PVC, PVC extrusion and aluminum alloy air duct are the main ones. [0004] 1) Flax fiberboard + PVC: hot pressing molding process is adopted, that is, flax fiberboard is heated and then molded to obtain products. This type of product is light in weight, but its strength and hardness cannot meet the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/38B29C44/12B29C44/58B29L31/30
CPCB29C33/3842B29C44/12B29C44/58B29L2031/30
Inventor 龚捷余书发
Owner GUIZHOU HUAYUN AUTOMOBILE DECORATING PART MFG CO LTD
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