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Weather-resistant drainage pipeline with multi-layer structure and preparation method of weather-resistant drainage pipeline

A multi-layer structure and drainage pipe technology, applied in the field of pipes, can solve the problems of pipe products such as weather resistance and anti-aging performance limitations, and achieve the effect of ensuring long-term stable use, high weather resistance and aging resistance

Pending Publication Date: 2022-06-07
LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is often used as an ultraviolet shielding agent such as titanium oxide, zinc oxide, cerium oxide, etc., although they all have very good ultraviolet absorption and reflection properties, but they often have a certain photocatalytic effect when absorbing ultraviolet rays. Under the action of ultraviolet shielding, it will also have a certain catalytic oxidation effect. Therefore, the use of ultraviolet shielding agents alone has great restrictions on the weather resistance and anti-aging performance of pipeline products outdoors. Under the condition of reducing photocatalytic oxidation aging, the long-term performance stability of outdoor weather resistance and anti-aging performance of polymeric materials will be greatly improved.

Method used

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  • Weather-resistant drainage pipeline with multi-layer structure and preparation method of weather-resistant drainage pipeline

Examples

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Effect test

Embodiment 1

[0022] A multi-layer structure high weather-resistant drainage pipe, prepared by three-layer co-extrusion method, the inner layer formula is made of materials containing the following weight parts: PVC resin 100 parts, calcium carbonate powder 20 parts, calcium zinc heat stabilizer 4 parts, solid plasticizer 1 part, processing additive 0.5 parts, lubricant 1 part, toughening modifier 6 parts.

[0023] Among them, the polymerization degree of PVC resin is 1000 ~ 1100, PVC resin using SG-5 pvc resin, the mesh number of calcium carbonate powder is 500 ~ 1000 mesh, the processing auxiliary is methyl methacrylate, ethyl acrylate, butyl acrylate and styrene copolymer obtained by copolymer ACR, toughening modifier is acrylate, styrene grafted on styrene butadiene rubber copolymer MBS, MBS is added as a supplement to ACR impact modifier, Calcium in calcium zinc heat stabilizer accounts for 5 to 6% of the mass, the lubricant is butyl stearate, paraffin oxide, glyceryl stearate and PE compo...

Embodiment 2

[0034] The present embodiment is used by a three-layer co-extrusion process for the production of pipes each layer of the composition ratio is different, specifically:

[0035] A drainage pipe with high weather resistance, the innermost layer is made of a material comprising the following weight components: PVC resin 100 parts, calcium carbonate powder 25 parts, calcium zinc heat stabilizer 5 parts, solid plasticizer 1 part, processing aid 2.5 parts, lubricant 1.2 parts, toughening modifier 9 parts; the solid plasticizer is neopentyl glycol dibenzoic acid vinegar 1.2 parts, the choice of other formulations is the same as Example 1;

[0036] The middle layer formula adds 1 part of light stabilizer, 6 parts of ultraviolet shielding agent on the basis of the inner layer formula, and the light stabilizer is a benzophenone light stabilizer to maintain the stability of PVC under light. UV shielding agents are compounds of zinc oxide, cerium oxide, titanium dioxide, carbon black, graphen...

Embodiment 3

[0045] The present embodiment is used by a three-layer co-extrusion process for the production of pipes each layer of the composition ratio is different, specifically:

[0046] A drainage pipe with high weather resistance, the innermost layer is made of a material comprising the following weight components: PVC resin 100 parts, calcium carbonate powder 30 parts, calcium zinc stabilizer 5 parts, solid plasticizer 1 part, acrylate processing aid 2.5 parts, lubricant 1.6 parts, toughening modifier 7 parts, solid plasticizer is phthalate dicyclohexyl ester 0.9 parts, the choice of other formulations is the same as Example 1;

[0047] The middle layer formula adds 2 parts of the light stabilizer on the basis of the inner layer of the formula, 5 parts of the ultraviolet shielding agent and reduces the amount of calcium carbonate powder to 20 parts, the light stabilizer is a triazine light stabilizer, and the ultraviolet shielding agent is zinc oxide, cerium oxide, titanium dioxide, carbo...

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Abstract

The invention discloses a weather-resistant drainage pipeline with a multi-layer structure and a preparation method of the weather-resistant drainage pipeline. The weather-resistant drainage pipeline comprises an inner layer, a middle layer and an outer layer, the middle-layer pipe comprises the following raw material components in parts by weight: 100 parts of PVC resin, 5-30 parts of calcium carbonate powder, 3-6 parts of a calcium-zinc heat stabilizer, 1-3 parts of a solid plasticizer, 0.5-4 parts of a processing aid, 0.7-1.5 parts of a lubricant, 4-13 parts of a toughening modifier, 3-6 parts of an ultraviolet screening agent and 1-3 parts of a light stabilizer; besides the raw material components of the middle-layer pipe, the outer-layer pipe further comprises the following raw material components in parts by weight: 3-6 parts of a blocking agent. On the basis that high toughness and high strength are guaranteed, the ultraviolet shielding effect is excellent, the outer layer can effectively prevent oxygen in air from making contact with the middle layer material by further adding the material compounded with the blocking agent, and the situation of oxidation aging is further reduced while the photocatalytic oxidation reaction is reduced; the weather resistance and aging resistance of the drainage pipeline are improved, the drainage pipeline is environment-friendly and lead-free, and long-term stable use can be effectively guaranteed.

Description

Technical field [0001] The present invention belongs to the field of pipeline technology, specifically relates to a multi-layer structure of weather-resistant drainage pipe and preparation method thereof. Background [0002] PVC (full name Polyvinyl chloride) is polyvinyl chloride, because of its good mechanical properties are widely used in the pipe industry, especially hard PVC pipes, is widely used in pressure-resistant drainage pipes. However, the thermal stability and light stability of the material itself are not strong, so the long-term use performance of PVC drainage pipes, such as high and low temperature resistance, high toughness, high strength and deformation resistance, creep resistance and other long-term adaptability is weak, especially in the case of outdoor long-term use There is a problem of weather resistance. Rainwater drainage pipe is also an integral part of the drainage pipe system, as a rainwater pipe discharge system, especially as some characteristics of...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L33/12C08L51/04C08K3/26C08K3/22C08K3/04C08K5/3475C08K3/36B32B1/08B32B27/30B32B27/06B32B27/18F16L9/12
CPCC08L27/06B32B1/08B32B27/304B32B27/08B32B27/18F16L9/121C08K2003/265C08K2003/2296C08K2003/2241C08L2203/18C08L2201/08B32B2597/00B32B2307/536B32B2307/712B32B2307/71B32B2307/558C08L33/12C08L51/04C08K3/26C08K3/22C08K3/042C08K3/04C08K5/3475C08K3/36Y02A20/20
Inventor 冯济斌宋锵陈宏霍福磊
Owner LINHAI WEIXING NEW BUILDING MATERIALS CO LTD