Cooling unit for modification process of long glass fiber reinforced plastic

A technology for reinforced plastics and cooling devices, which is applied in the field of cooling devices for modification process of long glass fiber reinforced plastics, which can solve the problems of fragility, cracking, and brittle products, and achieve the effect of preventing brittleness and sudden cooling

Inactive Publication Date: 2015-08-12
NANJING JINGJINYUAN TECHN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water temperature in multiple water tanks decreases from high to low in turn, so that the material strips gradually drop from high temperature to low temperature when cooling, which overcomes the drastic change in the crystallization state of the polymer caused by only using one low-temperature water container for cooling in the existing cooling methods, resulting in The product is brittle, fragile and easy to crack in the later granulation process

Method used

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  • Cooling unit for modification process of long glass fiber reinforced plastic
  • Cooling unit for modification process of long glass fiber reinforced plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 , figure 2 In the cooling device for modification process of long glass fiber reinforced plastic shown in the figure, the strip 11 formed after mixing glass fiber and molten polymer is pulled into the No. 1 small water tank 1 and No. No. 3 small water tank 3 and No. 3 small water tank 5, the material bar 11 moves horizontally, while the liquid levels of No. 1 small water tank 1, No. 2 small water tank 3, and No. 3 small water tank 5 are higher than the horizontal height of the material bar 11. 11 plays the role of cooling; each small water tank is provided with a grid 17, and the feed bar 11 passes through; No. 1 small water tank 1, No. 2 small water tank 3, and No. Ensure that the liquid level is always higher than the horizontal position of the material bar 11, so that the material bar 11 can be completely submerged in water, and the excess water will flow from the grids at the two ends of the No. 1 small water tank 1, the No. 2 small water tank 3, ...

Embodiment 2

[0025]On the basis of embodiment 1, the material as base material is nylon 6, then the setting of water temperature in No. 1 large water tank 2 is at 60 degrees Celsius, the setting of water temperature in No. 2 large water tank 4 is at 50 degrees Celsius, and in No. 3 large water tank 5 The water temperature can be set to not higher than 40 degrees Celsius.

[0026] Compared with the prior art, the cooling device for the modification process of long glass fiber reinforced plastics of the present invention has the following advantages: 1. The material strip in the high-temperature molten state passes through the cooling water in three different regions of high temperature, medium temperature and low temperature respectively It is cooled, which effectively prevents the phenomenon of sudden cooling, which is beneficial to control the crystallization of materials, and prevents the strips from becoming brittle due to sudden overcooling, resulting in brittleness and cracking during ...

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Abstract

A cooling unit for a modification process of long glass fiber reinforced plastic comprises a plurality of cooling water tanks arranged in parallel. Each cooling water tank is composed of a small tank and a large tank arranged below the small tank; the temperature of water in the large and small tanks decreases gradually along a moving direction of strips; grilles are disposed at two ends of the top of the small tank and are composed of a plurality of circular columns; a gap between every circular columns is used as a passage allowing passage of the strips; circulating pumps are disposed in the large and small tanks and provide water to the small tank through a pipe, the water in the small tank can flow back into the large tank through the grilles, and the water level of the small tank is lower than the horizontal plane which the strips pass by. The cooling unit has the advantages that the multiple cooling tanks of different temperatures are used to gradually cool the strips, defective rate of the strips can be evidently decreased, lean production is achieved, and waste of cooling water is avoided.

Description

technical field [0001] The invention relates to a device for producing plastic modified braces, in particular to a cooling device for the modification process of long glass fiber reinforced plastics. Background technique [0002] In the existing long glass fiber reinforced plastic modification process, after the glass fiber is combined with the molten polymer in the dipping tank, a cylindrical infinitely long material strip is obtained through the drawing process, and the material strip is drawn and enters the cooling process; generally The cooling process adopts the form of water cooling. In the water cooling process, the material strips are often directly entered into a container with low-temperature cooling water from a high-temperature molten state to cool the material strips. The cooled material strips continue to Move, enter the process of air drying and granulation. However, there are deficiencies in such a production process, mainly including: [0003] 1. The high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/16
Inventor 孔小寅章熙军高石
Owner NANJING JINGJINYUAN TECHN IND
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