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Flexible polyvinyl chloride composition for sealing pipelines and preparation method thereof

A soft polyvinyl chloride and pipe sealing technology, applied in the field of polymer materials, can solve problems such as limited treatment channels for pipe manufacturers, air, soil and groundwater pollution, occupation of land resources, etc., to promote cross-linking, mutual tolerance, expansion The effect of comprehensive utilization and wide source of raw materials

Active Publication Date: 2019-07-23
TIANJIN YONGGAO PLASTIC IND DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the rapid development of the economy, the number of cars in the domestic market is increasing, and the waste rubber tires are also increasing exponentially. Although waste rubber is used in engineering road construction, it is far less than the amount of waste rubber. Growth, a large amount of untreated non-used plastics and rubbers not only occupy land resources, but also the plasticizers and heavy metal elements in them will pollute our air, soil and groundwater after exposure to sunlight and rain erosion
[0003] At present, the dust from the kneading process of PVC materials is collected by a dust collector. The clean and consistent color can generally be recycled and added to the pipe compound for use, but the powder with mixed colors and untestable ingredients is generally used as Dispose of solid waste; pipe production uses burnt yellow materials, carbonized mixed materials, recycled waste PVC pipes, and pipe manufacturers have limited disposal channels

Method used

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  • Flexible polyvinyl chloride composition for sealing pipelines and preparation method thereof
  • Flexible polyvinyl chloride composition for sealing pipelines and preparation method thereof
  • Flexible polyvinyl chloride composition for sealing pipelines and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Put 50kg of powder (masterbatch) recovered from the dust collector into a high-speed mixer for high-speed stirring, the mixer speed is 670rpm, slowly add 300g of titanate coupling agent (adding in 3 times, each time at an interval of 0.5min), at 90°C After mechanical stirring for 10 minutes, add 2kg of nitrile rubber powder and 2kg of CPE140. After mixing at 100°C for 3 minutes, discharge the materials until cold and stir to cool to 45°C, and then make a composite compatibilizer out of the pot; put 50kg of waste UPVC pipe grinding materials into the high-speed In the mixer, the stirring speed is 670rpm, the temperature is raised to 65°C, and 0.25g of calcium-zinc composite stabilizer and 1kg of carbon black are added. Epoxidized soybean oil, when the mixture in the mixer appears in small lumps, add 30kg of the prepared compound compatibilizer; after stirring at high and low speeds to disperse evenly, when the stirring temperature rises to 85-90°C, crush the mixture and a...

Embodiment 2

[0033] Put 50kg of powder (masterbatch) recovered from the dust collector into a high-speed mixer for high-speed stirring, the mixer speed is 670rpm, slowly add 350g of titanate coupling agent (adding in 3 times, each time at an interval of 0.5min), at 90°C After mechanical stirring for 10 minutes, add 1.5kg of nitrile rubber powder and 1.5kg of CPE140. After mixing at 100°C for 3 minutes, discharge the materials until cold, stir and cool to 45°C, and then make a composite compatibilizer out of the pot; grind 50kg of waste UPVC pipes into powder Put it into a high-speed mixer with a stirring speed of 670rpm, heat up to 65°C, add 0.25g of calcium-zinc composite stabilizer and 1kg of carbon black, and at the same time turn the speed to low speed, and the stirring speed is 335rpm; continue to stir and heat up to 70°C, then slowly and evenly Inject 30kg of diisobutyl phthalate and 20kg of chlorinated paraffin, and when the mixture in the mixer appears in small lumps, add the prepar...

Embodiment 3

[0035] Put 50kg of powder (masterbatch) recovered from the dust collector into a high-speed mixer for high-speed mixing, the mixer speed is 670rpm, slowly add 400g of titanate coupling agent (adding in 3 times, each time at an interval of 0.5min), at 90°C After mechanical stirring for 10 minutes, add 1.5kg of nitrile rubber powder and 1.5kg of CPE140. After mixing at 100°C for 3 minutes, discharge the materials until cold, stir and cool to 45°C, and then make a composite compatibilizer out of the pot; grind 50kg of waste UPVC pipes into powder Put it into a high-speed mixer with a stirring speed of 670rpm, heat up to 65°C, add 0.25g of calcium-zinc composite stabilizer and 1kg of carbon black, and at the same time turn the speed to low speed, and the stirring speed is 335rpm; continue to stir and heat up to 70°C, then slowly and evenly Inject 50kg of epoxy soybean oil and 10kg of phosphate ester, and when the mixture in the mixer appears in small lumps, add 30kg of the prepared...

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Abstract

The invention relates to the technical field of macromolecular materials and discloses a flexible polyvinyl chloride composition for sealing pipelines. The composition is prepared from the following raw materials: waste UPVC pipe abrasive powder, a plasticizer, activated waste rubber powder, a stabilizer, an oxidant, a compound compatibilizer and carbon black. According to the flexible polyvinyl chloride composition for sealing pipelines, waste PVC pipes and powder recycled by a dust collector are effectively utilized; comprehensive utilization of the waste PVC material and the waste rubber isexpanded; the treatment cost of the material recycled by the dust collector and the damage and the pollution of the solid waste to the environment can also be reduced; a sealing gasket sample prepared from the flexible polyvinyl chloride composition is moderate in hardness; the flexible polyvinyl chloride composition has the advantages of high elongation at break, excellent low-temperature flexibility, wide raw material sources and low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a soft polyvinyl chloride composition for pipe sealing and a preparation method thereof. Background technique [0002] Rigid polyvinyl chloride pipes (UPVC) are widely used in various fields such as industrial, municipal and civil water supply and drainage. PVC pipes have been well received by the engineering community for their light weight, corrosion resistance, high compressive strength, safety and convenience. In recent years, driven by the rapid development of the domestic economy, my country's PVC pipes have developed very rapidly. In the production process of PVC materials, several additives are bound to be added, such as stabilizers, fillers, titanium dioxide, processing aids, etc. Dust will be generated during the stirring process, and waste and non-recyclable solids will inevitably be generated during production and use. Today, with increasing emphasis on en...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L21/00C08L9/02C08L23/28
CPCC08L21/00C08L27/06C08L2203/18C08L2205/035C08L2207/20C08L9/02C08L23/286
Inventor 段洪文何正炎武佳韦赵建华
Owner TIANJIN YONGGAO PLASTIC IND DEV CO LTD