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Polyurethane product and preparation method thereof and special equipment thereof

A special equipment, polyurethane technology, applied in the field of polyurethane products, can solve problems such as product deformation, achieve the effect of solving deformation and highlighting substantive characteristics

Active Publication Date: 2010-01-13
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for products produced by this method, where the insert is set, the metal insert itself will force the fiberglass mat away from the surface of the mold, causing deformation of the product

Method used

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  • Polyurethane product and preparation method thereof and special equipment thereof
  • Polyurethane product and preparation method thereof and special equipment thereof
  • Polyurethane product and preparation method thereof and special equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1, such as Figure 14 , the magnet 21 is installed on the upper mold 3, the magnet 21 is embedded in the upper mold 3 after wrapping the diamagnetic material 22, the final magnet 21, the diamagnetic material 22 and the surface of the upper mold 3 are flush, the magnet 21 is cylindrical, and the placed The positions are distributed along the shape of each upper metal insert 5, at least one at both ends, the upper metal insert 5 is in the shape of a strip, at least two, and separated by a certain distance on the mold, it can also be a ring, by means of The attraction between the magnet 21 that is flat with the upper mold body and the upper metal insert 5 fixes the upper layer of glass fiber felt 1 on the upper mold 3 surface.

[0051] Such as Figure 4 , the bottom glass fiber mat 2 can be directly placed on the surface of the lower mold 4 without inserts fixed; the upper layer of glass fiber mat 1 is placed on the surface of the upper mold 3, and the upper mold ...

Embodiment 2

[0053] Embodiment 2, magnet 21 is set respectively on upper mold 3 and lower mold 4, and magnet 21 is embedded upper and lower mold after wrapping diamagnetic material 22, and final magnet 21, diamagnetic material 22 and mold surface are flush, and magnet 21 is cylindrical, and the placement position is distributed along the shape of each insert, at least one at each end, and the inserts are strip-shaped, at least two, and separated by a certain distance on the mold;

[0054] Place the bottom glass fiber mat 2 on the lower mold 4, and fix the bottom glass fiber mat 2 on the lower mold 4 through the lower metal insert 6, and put the upper glass fiber mat 1 on the upper mold 3, and also pass the upper metal insert 5 Fix the upper layer of glass fiber mat 1 on the upper mold 3, the lower metal insert 6 and the upper metal insert 5 are two strips, corresponding to the magnet 21 on the mold respectively, after pouring 1000g of polyurethane composite material, close the mold, After ...

Embodiment 3

[0056] Embodiment 3, a magnet 21 is set on the upper mold 3, and the magnet 21 is embedded in the upper mold 3 after wrapping the diamagnetic material 22. Finally, the magnet 21, the diamagnetic material 22 and the surface of the upper mold 3 are flush, and the upper metal insert 5 is a strip-shaped and ring-shaped combination, the strip-shaped inserts are separated by a certain distance on the upper mold, and the ring-shaped inserts are arranged around the pouring port 9 at the geometric center of the upper mold;

[0057] Place the bottom glass fiber mat 2 on the lower mold 4, the upper glass fiber mat 1 is fixed on the upper mold 3 through the strip-shaped upper metal insert 5, and the upper layer of glass fiber mat is fixed by the ring-shaped upper metal insert 5 near the pouring port 9 1. After the mold is closed, pour the combined material, open the mold after aging, and take out the product.

[0058] Because the annular metal insert near the sprue plays a good role in fi...

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Abstract

The invention discloses a polyurethane product and a preparation method thereof and special equipment thereof. The invention is characterized in that an upper mould is internally paved with an upper layer glass fiber felt; the upper layer glass fiber felt is provided with a metal embedding part; the upper layer glass fiber felt is fixed on the upper mould by magnetism between a magnet on the metal embedding part and a magnet on the mould; a lower mould is paved with a bottom layer glass fiber felt; or by means of fixing using the metal embedding part, polyurethane compound material is cast; the mould is closed; the mould is opened after being cured to produce a product; the upper layer glass fiber felt (1) of the product is positioned at the upper surface of the product; the metal embedding part (5) is positioned below the upper layer glass fiber felt (1) and is tightly adhered to the upper layer glass fiber felt (1) at an upper surface; and the bottom layer glass fiber felt (2) is positioned at the lower surface of the product. Therefore, the invention guarantees that the glass fiber felts are distributed at the upper surface and a lower surface of the product, thereby better solving the deformation problem of the product.

Description

Technical field: [0001] The invention relates to the technical field of polyurethane products, in particular to a polyurethane product and its preparation method and special equipment, in particular to a glass fiber felt reinforced polyurethane product and its production method and special equipment. Background technique: [0002] The most commonly used polyurethane products are the reaction injection molding process, which is very suitable for the production of thin-sheet products; but the strength of pure polyurethane products is not high. In order to improve the strength of polyurethane products, glass fiber mat reinforcement is usually used. Due to the relatively high density of glass fiber mat, it usually settles to the bottom layer of the mold during the injection molding process. Because fiberglass mat has a lower shrinkage rate, the part produced will warp on the upper mold side as the fiberglass mat is closer to the lower mold side. [0003] In order to solve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/04B29C70/36B29C70/54B29C33/16
Inventor 李海帆朱维珍宋协文
Owner YANTAI ZHENGHAI HIGH TECH
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