A kind of method that utilizes vulcanizer to detect heat stabilizer

A heat stabilizer and vulcanizer technology, applied in the field of testing, can solve the problems of poor use effect, thermal stability testing of PVC injection molding products is not necessarily effective, waste of energy, time and capital investment, etc., to achieve accurate and effective results, low cost. Cost, wide application effect

Active Publication Date: 2022-07-22
台州联成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is especially effective for testing PVC extrusion or calendering products, because the above detection method simulates the actual production process, but it is not necessarily effective for thermal stability testing of PVC injection molding products, because PVC injection molding process is closed and oxygen-free It is carried out in a heated and pressurized environment, which leads to a problem. The heat stabilizer developed by the heat stabilizer manufacturer according to the above-mentioned detection methods does not work well in the customer's injection molding process, which causes heat stabilizer manufacturers and customers. A lot of energy, time and money were wasted in vain

Method used

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  • A kind of method that utilizes vulcanizer to detect heat stabilizer
  • A kind of method that utilizes vulcanizer to detect heat stabilizer
  • A kind of method that utilizes vulcanizer to detect heat stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Thermal stability test of the same PVC soft product thermal stabilizer.

[0028] The temperature of the vulcanizer was set to 160°C, and the observation time of each piece was 30min. The sheet metal mold has 8 identical hollow circles (see figure 1 ), the diameter of the hollow circle is 50mm, the thickness is 1mm, the thickness of the plywood is 1mm, and the side length is 300mm square. 3 kg of the mixture was weighed according to the following weight ratios, PVC: 100, calcium zinc heat stabilizer: 3, plasticizer: 40, calcium carbonate: 20, lubricant: 0.3. Put the mixture into a 10L high-speed mixer and mix for 10 minutes, stop, take 150 grams of the mixture and add it to the two-roller for 5 minutes at 160°C, with a thickness of 1.5mm, cut the slices according to the size of the hollow circle, and put them into the mold middle. The top and bottom of the mold are fixed by metal plates, which are put into the vulcanizing machine together. After 30 minutes, the mold ...

Embodiment 2

[0030] Thermal stability test of the same PVC rigid product thermal stabilizer.

[0031] The temperature of the vulcanizer was set to 200°C, and the observation time of each piece was 5min. The sheet metal mold has 6 identical hollow squares (see figure 2 ), the side length of each square is 60mm, the thickness is 1.5mm, the thickness of the plywood is 1mm, and the side length is 300mm square. 3 kg of the mixture was weighed according to the following weight ratios, PVC: 100, composite lead heat stabilizer: 4, CPE: 8, calcium carbonate: 10, ACR: 3, lubricant: 1.0. Put the mixture into a 10L high-speed mixer and mix for 10 minutes, stop, take 150 grams of the mixture and add it to the two-roller: 200 ℃ for 5 minutes, the thickness is 1.0mm, cut the thin slices according to the size of the hollow groove, each groove Put 2 slices inside and put them in the mold. The top and bottom of the mold are fixed by metal plates, which are put into the vulcanizing machine together. Aft...

Embodiment 3

[0033] Thermal stability test comparison of different thermal stabilizer samples.

[0034] 1. Set the temperature of the vulcanizer to 180°C, and the observation time of each piece is 15min.

[0035] 2. There are two hollow circles in the metal sheet mold (see image 3 ), the diameter is 80mm, the thickness is 1mm, the thickness of the plywood is 1mm, and the side length is 200mm square.

[0036] 3. Weigh 3 kg of the mixture according to the following weight ratios (1# sample: PVC: 100, 1# organotin heat stabilizer: 1, plasticizer: 40, lubricant: 0.5. 2# sample: PVC: 100, Organotin heat stabilizer 2#: 1, plasticizer: 30, lubricant: 0.5.) Put the above mixture into a 10L high-speed mixer and mix for 10 minutes, stop, take 150 grams of the mixture and add it to the two-roller 170 ℃ for 5 minutes, the thickness is 1.5mm.

[0037] 4. Cut the slices according to the size of the hollow circle and put them into the mold. The top and bottom of the mold are fixed by metal plates, w...

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Abstract

The invention relates to a method for detecting a heat stabilizer by using a vulcanizer. Cut a hollow groove with the same shape and size on the metal sheet to obtain a mold, take two metal splints, turn on the flat vulcanizer to preheat; weigh the PVC resin powder, heat stabilizer and auxiliary materials according to the formula requirements of the tested product, and mix at high speed. Stir in the machine to get the premix, then put the premix in the two-roller machine, take out and cool to get the PVC sheet; lay the mold flat on the metal splint, cut the PVC sheet and put it into the cavity of the mold, and put it in the mold. Put another metal plate on top, and then put them together in the vulcanizing machine. After the time is reached, take out the mold, cool the PVC sheet naturally, and observe the color change, surface condition and transparency; compare and test 1-10 heat stabilizers at different times thermal stability, surface condition and transparency. The invention provides a method for detecting a heat stabilizer by using a vulcanizer, which has the advantages of accurate and effective results, low cost, simple operation and wide application.

Description

technical field [0001] The invention relates to a method for detecting a heat stabilizer by using a vulcanizer, and belongs to the technical field of detection. Background technique [0002] There are many detection methods for PVC (polyvinyl chloride in Chinese, hereinafter referred to as PVC) heat stabilizer. Commonly used (there are national standards or industry standards) are hot oven method, two-roller mill method, Congo red time test method, flow The above test methods test the static stability, dynamic stability and processing performance of the thermal stabilizer. The above method is particularly effective for the testing of PVC extrusion process or calendering process products, because the above detection method simulates the actual production process, but the thermal stability test of PVC injection molding products is not necessarily effective, because the PVC injection molding process is closed and oxygen-free It is carried out in a heated and pressurized enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/29G01N21/59G01B11/30G01N1/44G01N1/36
CPCG01N21/29G01N21/59G01B11/30G01N1/44G01N1/36G01N2001/366
Inventor 韦广华
Owner 台州联成新材料有限公司
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