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High-performance PVC plastic pipe and preparation method thereof

A plastic pipe, high-performance technology, applied in the field of high-performance PVC plastic pipe and its preparation, can solve the problems of unsatisfactory modification effect, product performance decline, lack of pertinence, etc., to improve physical and mechanical properties, improve processing plastic Enhanced performance and improved stability

Pending Publication Date: 2021-01-15
陈洁琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned modification of PVC pipes by adding various processing modifiers lacks pertinence, and the modification effect is not very ideal, resulting in high processing costs and decline in other performances of the product.

Method used

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  • High-performance PVC plastic pipe and preparation method thereof
  • High-performance PVC plastic pipe and preparation method thereof
  • High-performance PVC plastic pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of MMA / S-nanomontmorillonite composites:

[0040] (1) Dissolve 100g of sodium montmorillonite in water, prepare a suspension with a mass fraction of 4%, raise the temperature to 75°C, add 25g of cetyltrimethylammonium bromide under stirring, and stir for 2 hours , standing for stratification, filtering, taking the precipitate, washing the precipitate with water, drying it in vacuum to constant weight, grinding and sieving to obtain organic nano-montmorillonite;

[0041] (2) Mix 25g of organic nano-montmorillonite with water and place it in a reactor. The amount of water used is 6 times the total volume of methyl methacrylate and styrene. Under nitrogen protection, heat and stir in a water bath at 80°C for 1h. , lower the temperature to 70°C, add 300g methyl methacrylate, 100g styrene and 12g dibenzoyl peroxide, continue the reaction for 6h, then raise the temperature to 85°C, and react for 2h. Precipitate, wash the precipitate with water and vacuum dry to c...

Embodiment 2

[0043] Preparation of MMA / S-nanomontmorillonite composites:

[0044] (1) Dissolve 200g of sodium montmorillonite in water, prepare a suspension with a mass fraction of 7%, raise the temperature to 85°C, add 70g of cetyltrimethylammonium bromide under stirring, and stir for 1h , standing for stratification, filtering, taking the precipitate, washing the precipitate with water, drying it in vacuum to constant weight, grinding and sieving to obtain organic nano-montmorillonite;

[0045] (2) 135g of organic nano-montmorillonite is mixed with water, placed in a reactor, the amount of water is 7 times the total volume of methyl methacrylate and styrene, under nitrogen protection, 85 ℃ water bath heating and stirring reaction 0.5 h, lower the temperature to 75°C, add 400g of methyl methacrylate, 100g of styrene and 20g of dibenzoyl peroxide, continue the reaction for 4h, then raise the temperature to 90°C, and react for 1h. The precipitate was taken, washed with water, and then vacu...

Embodiment 3

[0047] Preparation of MMA / S-nanomontmorillonite composites:

[0048] (1) Dissolve 100g of sodium montmorillonite in water, prepare a suspension with a mass fraction of 5%, heat up to 80°C, add 30g of cetyltrimethylammonium bromide under stirring, and stir for 1.5 h, standing for stratification, filtering, taking the precipitate, washing the precipitate with water, drying in vacuum to constant weight, grinding and sieving to obtain organic nano-montmorillonite;

[0049] (2) Mix 75g of organic nano-montmorillonite with water, place in a reactor, the amount of water is 7 times the total volume of methyl methacrylate and styrene, under nitrogen protection, heat and stir in a water bath at 80°C for 1h , lower the temperature to 70°C, add 350g methyl methacrylate, 100g styrene and 18g dibenzoyl peroxide, continue the reaction for 6h, then raise the temperature to 90°C, and react for 1h. Precipitate, wash the precipitate with water and vacuum dry to constant weight to obtain the MMA...

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Abstract

The invention discloses a high-performance PVC plastic pipe and a preparation method thereof. The PVC plastic pipe comprises the following raw materials in parts by weight: 100 parts of PVC resin, 10-20 parts of chlorinated polyethylene, 1-3 parts of a PA-20 processing aid, 10-20 parts of an MMA / S-nano montmorillonite composite material, 3-5 parts of a stabilizer, 1-2 parts of a lubricant, 0.5-2 parts of an antioxidant and 1-3 parts of a filler. The PVC plastic pipe has the advantages of being good in impact resistance, heat resistance and pressure resistance, good in thermal stability and tensile strength, good in plasticizing performance, easy to machine and the like, the problem that an existing PVC pipe is rigid but not tough, poor in impact resistance and cracking resistance, poor inmachining plasticity and the like is effectively solved, and the PVC plastic pipe has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a high-performance PVC plastic pipe and a preparation method thereof. Background technique [0002] PVC (polyvinyl chloride) pipes have the characteristics of strong acid and alkali resistance, high structural strength, and good electrical insulation. Therefore, they are widely used in technical fields such as water supply, building drainage, sewage, and chemical engineering. Polyethylene plastic pipes. In the prior art, PVC pipes mostly use PVC resin as the main material, and some auxiliary materials are added for production and preparation. The main defects of these PVC pipes are relatively poor impact resistance and processing plasticity. On the one hand, rigid PVC products are brittle, and the notched impact strength of PVC at room temperature is only 2.2KJ / m 2 On the other hand, the stability of PVC materials is poor, and factors such as light, oxygen, and heat will ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/28C08L33/12C08L33/04C08L23/30C08K13/06C08K9/04C08K3/34C08K5/526C08K5/134C08K3/26
CPCC08L27/06C08L2203/18C08L2201/08C08L2205/035C08K2201/011C08K2003/265C08L23/286C08L33/12C08L33/04C08L23/30C08K13/06C08K9/04C08K3/346C08K5/526C08K5/1345
Inventor 陈洁琼
Owner 陈洁琼
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