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Method for rapidly identifying stability of low-tin-content mercaptan organic tin stabilizer

A technology of organotin thiol and stabilizer, which is applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as lack of industrial application prospects, differences in stability, troublesome instrument cleaning, etc., and facilitate processing and molding, sampling analysis, plastic The effect of shortening the molding time and shortening the molding time

Pending Publication Date: 2020-12-04
湖北犇星新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During processing, polyvinyl chloride (PVC) makes it have good color retention and good transparency of the product. At present, there are many types of mercaptan organic tin mercaptides on the market, and the content and stability are also different. The stability of mercaptan organic tin Before using the thiol organotin stabilizer, it is necessary to judge the stability of the mercaptan organotin stabilizer. In the current technology, the stability of the mercaptan organotin stabilizer is mostly judged by rheometer, Congo red experiment and oven aging experiment, and the operation is complicated. 1. After the measurement, it is troublesome to clean up the instrument, the detection speed is relatively slow, the cost is relatively high, and it does not have industrial application prospects. Therefore, it is necessary to develop a high-efficiency, low-cost, accurate and reliable method for identifying the stability of mercaptan organotin stabilizers. method

Method used

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  • Method for rapidly identifying stability of low-tin-content mercaptan organic tin stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for quickly identifying the stability of a low-tin content mercaptan organotin stabilizer of the present invention, the specific implementation steps include the following:

[0021] 1. Add 0.8g of mercaptan organotin stabilizer to be tested, 80g of five-type PVC resin powder, 1.0gACR, 2gMBS, 0.3g311P and 0.4g312P into the mixer and mix evenly to obtain a mixture of mercaptan organotin stabilizer to be tested. Material; 0.8g reference substance, 80g five-type PVC resin powder, 1.0gACR, 2gMBS, 0.3g311P and 0.4g312P are added in the mixer and mixed evenly to obtain the mixture of the reference substance; wherein the reference substance adopts a tin content of 9% Mercaptan organotin stabilizer; the speed of the mixer is set to 40rpm, the temperature is set to 15°C, and the mixing time is 40s.

[0022] 2. The mixture of the mercaptan organotin stabilizer to be tested obtained in step 1 and the mixture of the reference substance are masticated under the same conditio...

Embodiment 2

[0028] The steps in this embodiment are basically the same as those in Example 1, except that in step 1, the quality of ACR in the mixed material of the thiol organotin stabilizer to be tested is 1.5g, the quality of MBS is 3g, and the quality of 311P The quality of 0.7g, 312P is 0.9g, the quality of ACR in the mixture of reference substance is 1.5g, the quality of MBS is 3g, the quality of 311P is 0.7g, the quality of 312P is 0.9g, the speed setting of mixer The temperature is set to 60rpm, the temperature is set to 28°C, and the mixing time is 80s; in step 2, the distance between the front roller and the rear roller is set to 1.2mm; the temperature of the plasticizing process is set to 209°C.

Embodiment 3

[0030] The steps in this embodiment are basically the same as those in Example 1, except that in step 1, the quality of ACR in the mixture of organic tin mercaptan stabilizers to be tested is 1.25g, the quality of MBS is 2.5g, and the quality of 311P Quality is 0.5g, the quality of 312P is 0.6g, the quality of ACR is 1.25g, the quality of MBS is 2.5g, the quality of 311P is 0.5g, the quality of 312P is 0.6g in the mixture of reference substance, the quality of mixer The rotation speed is set to 50rpm, the temperature is set to 22°C, and the mixing time is 60s; in step 2, the distance between the front roller and the rear roller is set to 1.0mm; the temperature of the masticating process is set to 207°C.

[0031] What is not involved above is applicable to the prior art.

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Abstract

The invention discloses a method for rapidly identifying the stability of a low-tin-content mercaptan organic tin stabilizer. The method comprises the following steps: S1, preparing a mixture of an organic tin mercaptide stabilizer to be detected and a mixture of a reference substance, wherein the reference substance is an organic tin mercaptide stabilizer with determined tin content; S2, plastifying the mixture of the organic tin mercaptide stabilizer and the mixture of the reference substance in the step S1 under the same process conditions to obtain an organic tin mercaptide stabilizer sample wafer and a reference substance sample wafer; and S3, performing color value comparison on the organic tin mercaptide stabilizer sample wafer in the step S2 and a reference sample wafer to judge the stability of the organic tin mercaptide stabilizer. According to the method, by comparing with the stability of a reference substance, whether the stability of the organotin mercaptide stabilizer tobe detected reaches the stability level of the reference substance or not can be quickly judged; and the identification process of the stability of the mercaptan organotin stabilizer is simple, the efficiency is high, the cost is low, the result is accurate and reliable, and the method has a good industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of mercaptan organotin stabilizers, in particular to a method for rapidly identifying the stability of low-tin content mercaptan organotin stabilizers. Background technique [0002] Mercaptan organotin stabilizers are widely used in polyvinyl chloride (PVC) resin processing industry, suitable for various molding processes such as PVC calendering, extrusion, blow molding, injection molding, etc., especially for PVC such as pharmaceuticals, food, and drinking water pipes Processing process. [0003] Mercaptan organic tin stabilizers and their products have been identified as non-toxic and safe products by the U.S. Food and Drug Administration (FDA) and other world health supervision agencies, and have outstanding performance in inhibiting the early coloring of PVC products during processing. UV resistance and long-term stability, good flow. During processing, polyvinyl chloride (PVC) makes it have good color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25C08L27/06C08L33/04C08L51/04C08K5/58
CPCG01N21/25C08L27/06C08L2205/03
Inventor 戴百雄曹海兵朱科宫庭刘勇张硕蒋俊刘闯罗斌
Owner 湖北犇星新材料股份有限公司