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Weather-resistant colored composite PVC (Polyvinyl Chloride) pipe

A PVC pipe, color technology, applied in synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve the problems of unable to meet the diversified needs of users, expensive titanium dioxide, increase production costs, etc. Small friction coefficient, low cost, cost saving effect

Active Publication Date: 2014-01-22
重庆顾地塑胶电器有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of poor weather resistance of ordinary PVC pipes under ultraviolet light, some manufacturers have adopted a method of adding a large amount of weather-resistant titanium dioxide. Although this method can enhance the weather resistance of PVC pipes, titanium dioxide is expensive, and a large amount of use will inevitably increase production costs. , after adding a large amount of titanium dioxide, the pipe is white, which cannot meet the diverse needs of users

Method used

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  • Weather-resistant colored composite PVC (Polyvinyl Chloride) pipe
  • Weather-resistant colored composite PVC (Polyvinyl Chloride) pipe
  • Weather-resistant colored composite PVC (Polyvinyl Chloride) pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for preparing a weather-resistant colored composite PVC pipe in this embodiment includes the following steps: 1. Preparation of modified barium sulfate: first select 100 parts of barium sulfate powder with a particle size ≤ 3.0 μm, and then put the selected powder in a special mixer Pre-mix to 80-85°C, then add 1 part of coupling agent (Titanate TC-130), 1 part of stearic acid (HST) to the pre-mixed powder and high-mix to 110-120°C, and finally cold mix When the temperature is lower than 50°C, discharge the material to obtain modified barium sulfate; 2. Mix and granulate the PVC core layer and the inner and outer layers of ASA: according to Table 1 (modified barium sulfate in Table 1 is prepared by step 1) and Table 2 respectively Select the raw materials of the PVC core layer and the inner and outer layers of ASA, and then mix and granulate the selected raw materials separately; 3. Co-extrusion compound: the main machine and co-extrusion auxiliary machine co-...

Embodiment 2

[0034] The method for preparing a weather-resistant colored composite PVC pipe in this embodiment includes the following steps: 1. Preparation of modified barium sulfate: first select 100 parts of barium sulfate powder with a particle size ≤ 3.0 μm, and then put the selected powder in a special mixer Pre-mix to 80-85°C, then add 1 part of coupling agent (Titanate TC-130), 1 part of stearic acid (HST) to the pre-mixed powder and high-mix to 110-120°C, and finally cold mix When the temperature is lower than 50°C, discharge the material to obtain modified barium sulfate; 2. Mix and granulate the PVC core layer and the inner and outer layers of ASA: according to Table 3 (modified barium sulfate in Table 3 is prepared by step 1) and Table 4 respectively Select the raw materials of the PVC core layer and the inner and outer layers of ASA, and then mix and granulate the selected raw materials separately; 3. Co-extrusion compound: the main machine and co-extrusion auxiliary machine co-...

Embodiment 3

[0041] The method for preparing a weather-resistant colored composite PVC pipe in this embodiment includes the following steps: 1. Preparation of modified barium sulfate: first select 100 parts of barium sulfate powder with a particle size ≤ 3.0 μm, and then put the selected powder in a special mixer Pre-mix to 80-85°C, then add 1 part of coupling agent (Titanate TC-130), 1 part of stearic acid (HST) to the pre-mixed powder and high-mix to 110-120°C, and finally cold mix When the temperature is lower than 50°C, discharge the material to obtain modified barium sulfate; 2. Mix and granulate the PVC core layer and the inner and outer layers of ASA: according to Table 5 (modified barium sulfate in Table 5 is prepared by step 1) and Table 6 respectively Select the raw materials of the PVC core layer and the inner and outer layers of ASA, and then mix and granulate the selected raw materials separately; 3. Co-extrusion and compounding: the main machine and co-extrusion auxiliary mach...

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Abstract

The invention provides a weather-resistant colored composite PVC (Polyvinyl Chloride) pipe. The weather-resistant colored composite PVC pipe comprises an outer layer 3 and a core layer 2 which are subjected to co-extrusion, wherein the core layer 2 is a PVC layer; the outer layer 3 is a modified ASA (Acrylonitrile Styrene Acrylate) resin layer which is made from acrylonitrile, styrene and acrylate grafted copolymer, stearic acid, a fatty acid ester lubricating agent, calcium stearate, pigment, an antioxidant, an ultraviolet-resistant absorbing agent, an outer lubricating agent, a filling agent and a plastic modifying agent; the PVC pipe is made from polyvinyl chloride resin, a calcium-zinc stabilizing agent, modified barium sulfate, ACR (Acrylicester) resin, chlorinated polyethylene, stearic acid, polyethylene wax and a fatty acid ester lubricating agent and the like. The composite PVC pipe provided by the invention has the advantages that the weather resistance is excellent, the color is diversified and the sound-insulating effect is good.

Description

technical field [0001] The invention relates to a PVC pipe, in particular to a composite PVC pipe with excellent weather resistance and various colors. Background technique [0002] PVC pipe is a traditional pipe material, mainly used for urban rainwater drainage and indoor domestic sewage discharge. ASA resin is a ternary graft copolymer composed of acrylonitrile, styrene and acrylate. Its mechanical properties, processing properties, electrical insulation, and chemical corrosion resistance are similar to ABS. However, due to the introduction of acrylate rubber without double bonds, the weather resistance of ASA has been substantially improved. Even if it is exposed to outdoor ultraviolet rays, humidity, rain, light and ozone for a long time, it can maintain stable physical properties without painting. [0003] The traditional PVC pipe is white, and it is prone to discoloration and aging under ultraviolet radiation, which affects the service life of the pipe. In the high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L27/06C08K13/02C08K5/09C08K5/098C08K3/26C08K3/34C08K13/06C08K9/06C08K9/04C08K3/30B32B1/08B32B27/06B32B27/18B32B27/30
Inventor 姜通均李贤梅付志敏
Owner 重庆顾地塑胶电器有限公司
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