A kind of composite lead salt heat-stable anti-degradation additive and its preparation method and application

A composite lead salt, heat-stabilized technology, applied in the field of plastic processing, can solve problems such as limitations

Active Publication Date: 2021-07-06
内蒙古佳运通智能环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the development trend of PVC heat-stable anti-degradation additives towards low toxicity and non-toxicity in recent years, the use of lead salt heat-stable anti-degradation additives has been limited to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The present invention provides a preparation method of the composite lead salt heat-stable anti-degradation additive described in the technical solution, comprising the following steps:

[0036] Melting and dispersing the raw material components to obtain a slurry;

[0037] The slurry is aged to obtain a composite lead salt heat-stable anti-degradation additive.

[0038] In the invention, the raw material components are melt-dispersed to obtain slurry. In the present invention, the melting and dispersing is preferably carried out in a three-necked flask equipped with a mechanical stirring device and a reflux device under oil bath conditions; in the present invention, the process of melting and dispersing preferably includes: The first melting and dispersing is carried out; heating to 110-120°C, adding basic lead salt to the obtained dispersion material for the second melting and dispersing; then adding acid binding agent, titanium dioxide fly ash and calcium carbonate to...

Embodiment 1

[0043] Carry out batching according to following mass percentage content:

[0044] Tribasic lead sulfate 28%, lead stearate 7%, stearic acid 10%, polyethylene wax 10%, calcium carbonate 40%, fly ash 5%.

[0045] After weighing each raw material according to the above mass ratio, heat it to 90°C in an oil bath and a 250mL three-necked bottle equipped with a mechanical stirring device and a reflux device, add stearic acid and polyethylene wax, and add stearic acid and polyethylene wax under the condition of 100r / min Continue stirring for 15 minutes for the first melting and dispersing; heat to 110°C, add lead stearate and tribasic lead sulfate to the obtained dispersion material, and continue stirring for 20 minutes for the second melting and dispersing; then add calcium carbonate and Fly ash, continue to stir for 20 minutes to carry out the third melting and dispersing to obtain a gray-white uniform slurry; keep the slurry for 30 minutes to age, and cool the resulting product t...

Embodiment 2

[0048] Carry out batching according to following mass percentage content:

[0049] Tribasic lead sulfate 32%, lead stearate 8%, dibasic lead stearate 10%, 4A zeolite 5%, stearic acid 8%, polyethylene wax 8%, titanium dioxide 1%, calcium carbonate 18 %, fly ash 10%.

[0050] After weighing each raw material according to the above mass ratio, heat it to 90°C in an oil bath and a 250mL three-necked bottle equipped with a mechanical stirring device and a reflux device, add stearic acid and polyethylene wax, and add stearic acid and polyethylene wax under the condition of 120r / min Continue stirring for 15 minutes for the first melting and dispersing; heat to 115°C, add tribasic lead sulfate, lead stearate and dibasic lead stearate to the obtained dispersed material, and continue stirring for 25 minutes for the second melting and dispersing; Add 4A zeolite, titanium dioxide, calcium carbonate and fly ash to the obtained dispersed material, continue to stir for 25min to carry out th...

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PUM

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Abstract

The invention belongs to the technical field of plastic processing, and in particular relates to a composite lead salt heat-stable anti-degradation additive and its preparation method and application. The composite lead salt heat-stable anti-degradation aid provided by the invention comprises the following raw material components in mass percent: 35-60% of basic lead salt, 0-10% of acid-binding agent, 10-20% of lubricant, and 0% of titanium dioxide. ~2%, fly ash 5~18%, calcium carbonate 10~40%. The results of the examples show that the composite lead salt heat-stable anti-degradation additive provided by the present invention has outstanding performance in heat stability, can effectively increase the degradation temperature of polyvinyl chloride, and has high initial whiteness and good long-term stability.

Description

technical field [0001] The invention relates to the technical field of plastic processing, in particular to a composite lead salt heat-stable anti-degradation additive and its preparation method and application. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose resins in the world. Its products have the advantages of superior processing performance, difficult combustion, high mechanical properties, low price, rich sources of raw materials, and mature manufacturing processes. Therefore, they are widely used in light industry, machinery, Electronics, construction, textile and aerospace and other fields. However, PVC has poor stability during processing, especially in being extremely sensitive to heat. When the temperature reaches above 120°C, an obvious thermal decomposition reaction will occur, causing the color of PVC to change (white-yellow-red-brown-black) , while releasing hydrogen chloride gas. This deficiency directly leads to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/04C08K3/30C08K3/32C08K5/098C08K5/3492C08K3/34C08K3/22C08K5/09C08K7/24C08K3/26C08L23/06C08L23/30C08L91/06
CPCC08K3/22C08K3/26C08K3/30C08K3/32C08K3/34C08K5/09C08K5/098C08K5/34928C08K7/24C08K13/04C08K2003/2206C08K2003/2227C08K2003/2241C08K2003/265C08K2003/3045C08L23/06C08L23/30C08L27/06C08L91/06C08L2201/08
Inventor 曹建伟郭峰方斌正张晓芳武可书常强强
Owner 内蒙古佳运通智能环保新材料有限公司
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