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Environment-friendly antimicrobial PP-R (polypropylene-random) pipe

A PP-R, environmentally friendly technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of PP-R pipe distortion, large linear expansion coefficient, polluted tap water, etc., and achieve high temperature resistance and resistance Good pressure performance, low production cost, long-term antibacterial effect

Inactive Publication Date: 2012-06-27
合肥安诺新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing ordinary PP-R pipes or PP-R antibacterial pipes are manufactured with the most traditional raw materials. On the one hand, they cannot completely inhibit the growth of microorganisms in tap water, especially Escherichia coli and Staphylococcus aureus. After long-term use, the inner surface will be damaged. It is easy to form bacterial groups, pollute tap water, cause water quality to decline, and affect people's drinking water health
On the other hand, the existing PP-R pipe has an excessively large linear expansion coefficient during installation, construction and use. When the actual temperature difference is large, the PP-R pipe will be distorted and deformed due to excessive expansion or contraction, and poor rigidity. In addition, the low-temperature impact resistance of PP-R pipes needs to be further improved

Method used

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  • Environment-friendly antimicrobial PP-R (polypropylene-random) pipe
  • Environment-friendly antimicrobial PP-R (polypropylene-random) pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An environment-friendly antibacterial PP-R pipe, PP-R outer layer 1 and PP-R antibacterial inner layer 2, the formula of PP-R outer layer 1 is: PP-R hot water pipe special material (model RP2400) 100kg, PP -R cold water pipe special material (model 4220) 100kg, pipe special color masterbatch 5kg; PP-R antibacterial inner layer 2 formula is: PP-R hot water pipe special material (model RP2400) 100kg, inorganic antibacterial masterbatch 2kg (of which , silver nitrate 0.1kg, PP-R resin 2kg), color masterbatch 5kg.

[0028] The preparation process is as follows: choose a two-layer composite mold, connect with two plastic extruders, and preheat; start the feeding equipment, and suck the raw materials corresponding to the PP-R outer layer and PP-R antibacterial inner layer into the extruder Drying and preheating in the hopper; after the extruder and the mold are preheated to the corresponding temperature, start the two extruders in sequence, and form an antibacterial PP-R tube...

Embodiment 2

[0030] A kind of environment-friendly antibacterial type PP-R pipe, PP-R outer layer 1 and PP-R antibacterial inner layer 2, the prescription of PP-R outer layer 1 and PP-R antibacterial inner layer 2 is 5kg (wherein , silver nitrate 0.25kg, PP-R resin 5kg), other is identical with embodiment 1, and preparation process is also with embodiment 1.

[0031] The prepared antibacterial PP-R tube is detected with reference to QB / T 2591-2003, GB / T18742.2-2002 detection method and standard, and the results show that the antibacterial PP-R tube of the present invention is effective for large intestine The antibacterial rate of bacillus is 99%, and the antibacterial rate of Staphylococcus aureus is 99%.

[0032] According to the GB / T18742.2-2002 standard to test the physical and mechanical properties of the present invention, the coefficient of thermal expansion and thermal conductivity meet the standard, the longitudinal shrinkage rate is ≤ 3%, under the pressure of 95°C, ring stress 3...

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Abstract

The invention discloses an environment-friendly antimicrobial PP-R (polypropylene-random) pipe comprising a PP-R outer layer and a PP-R antimicrobial inner layer. The PP-R outer layer consists of the following components according to the weight ratio: 100 parts of dedicated PP-R hot water pipe materials, 100 parts of dedicated PP-R cold water pipe materials and 5 parts of colorants, the antimicrobial inner layer consists of the following components according to the weight ratio: 100 parts of dedicated PP-R hot water pipe materials and 2-10 parts of inorganic antimicrobial master batch which is a mixture of a silver ion antimicrobial agent and PP-R resin. The environment-friendly antimicrobial PP-R pipe of the invention has a reasonable production formula and good mechanical performance, is small in coefficient of thermal expansion and longitudinal retraction rate, and selects the silver ion antimicrobial agent, thus having a distinct antimicrobial effect on Escherichia coli and Staphylococcus aureus.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite materials, and in particular relates to an environment-friendly and antibacterial PP-R pipe. Background technique [0002] Existing ordinary PP-R pipes or PP-R antibacterial pipes are manufactured using the most traditional raw materials. On the one hand, they cannot completely inhibit the growth of microorganisms in tap water, especially Escherichia coli and Staphylococcus aureus. After long-term use, the inner surface will be damaged. It is easy to form bacterial groups, pollute tap water, cause water quality to decline, and affect people's drinking water health. On the other hand, the existing PP-R pipe has an excessively large linear expansion coefficient during installation and use. When the actual temperature difference is large, the PP-R pipe will be distorted and deformed due to excessive expansion or contraction, and poor rigidity. In addition, the low-temperature impact ...

Claims

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Application Information

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IPC IPC(8): F16L9/133
Inventor 张兵
Owner 合肥安诺新型建材有限公司
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