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Device and method for testing short-cut index of glass fiber

A glass fiber and testing device technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve problems such as difficult quantitative detection performance

Inactive Publication Date: 2011-09-28
ZIBO SINOMA PANGBEIJIE G CRYSTAL GLASS FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these original detection methods are difficult to quantitatively detect the above properties, and there are strict requirements on process parameters in actual production, such as the temperature and humidity of the environment, the relative position of the cutting machine and the mold, the working parameters of the cutting machine, etc. The previous methods can't fit the actual situation of users very well

Method used

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  • Device and method for testing short-cut index of glass fiber
  • Device and method for testing short-cut index of glass fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: the front panel 7 is evenly divided into 11 areas, the distance between the starting area and the chopped spray gun 5 is 750mm, the width of each area is 305mm, and the distance between the front panel 7 and the rear panel 8 is 150mm; The temperature of the test environment is 20°C and the humidity is 45%. Place the yarn roll 1 on the left side of the glass fiber chopped index test device, draw the yarn from the inside of the yarn roll 1 to feed the chopping spray gun 5, and turn on the compressed air source 2 , respectively adjust the chopping pressure and injection pressure through the chopping pressure regulator valve 3 and the injection pressure regulator valve 4, the chopping pressure is 35PSI, and the injection pressure is 25PSI; open the chopping spray gun 5, and start timing at the same time, after running for 60 seconds Stop; observe the height of the chopped yarn in each area on the front panel 7 of the collection box 6 by the observation groove...

Embodiment 2

[0023] Embodiment two: adjust the chopping pressure to be 38PSI, and the running time is 59 seconds. All the other are the same as in embodiment one. 0.5, 0.25, weighing 328 grams of the collected chopped yarn, the resulting chopped index is 7.75.

Embodiment 3

[0024] Embodiment 3: adjust the chopping pressure to be 30PSI, the injection pressure to be 23PSI, and the running time to be 63 seconds. The rest are the same as in Embodiment 1. The readings of each area obtained are respectively 0.25, 0.25, 0.25, 0.25, 0.5, 0.75, 1 , 1, 0.75, 0.5, 0.25, weighing 315 grams of chopped yarn collected, the chopped index obtained is 5.75.

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Abstract

The invention relates to a device and a method for testing the short-cut index of glass fiber. The test device comprises a yarn roll, a compressed air source, a short-cut pressure regulating valve, a jet pressure regulating valve and a short-cut spray gun. The device is characterized by also comprising a bracket and collection boxes which are fixed on the bracket and at the front side of the short-cut spray gun, wherein a front panel of each collection box is made of transparent materials and is evenly divided into a plurality of areas, and the bottom of the front panel is marked with scales corresponding to all areas; the short-cut index of the glass fiber is tested by the test device, the short-cut spray gun is started for a certain time under the suitable environment, the height of each area is read out by observing the height of short-cut yarn at each area on the front panel of the collection box through an observation tank, and the short cut index data of the glass fiber is obtained according to the read heights of all area and then summarized to obtain the short-cut index. The invention can be used for accurately, simply and fast detecting the distribution situation after short cut of the glass fiber by carrying out statistics on the distribution situations of jet yarns at all areas, thereby obtaining the short-cut index of the glass fiber.

Description

technical field [0001] The invention relates to a glass fiber chopped index test device and method, in particular to a jet yarn chopped performance test device and method. Background technique [0002] There are mainly four kinds of glass fibers used for chopping, the first is used for portable glass fiber-resin spray gun equipment, we call it jet yarn; the second is used for the manufacture of preforms; the third is used It is used to manufacture transparent sheets; the fourth is used to manufacture sheet molding compounds (SMC) and bulk molding compounds (DMC). [0003] Among them, the spray yarn is used in the spray forming process. It sprays two polyesters mixed with an initiator and an accelerator from both sides of the spray gun, and at the same time sprays the cut glass fiber roving from the center of the spray gun to make it and The resin is evenly mixed and deposited on the mold. When it is deposited to a certain thickness, it is compacted with a roller to make the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/00
Inventor 王宝国
Owner ZIBO SINOMA PANGBEIJIE G CRYSTAL GLASS FIBER