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High-impact-resistant PVC rigid tube and preparation method thereof

A high-impact, rigid pipe technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of incomplete combination of additives and PVC resin, complicated transportation and installation processes, and inability to meet the requirements of use. The effect of passing rate, saving raw materials and high impact strength

Inactive Publication Date: 2014-04-16
河北盛华化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its impact resistance is poor, its toughness is insufficient, its scratch resistance is poor, and its transportation and installation processes are relatively complicated, resulting in a large consumption of raw materials, a narrow scope of application, and a slightly higher cost of use.
In recent years, the emergence of PVC-M pipes has solved the lack of toughness of PVC rigid pipes and improved its impact resistance, scratch resistance, and scratch resistance. However, since PVC-M pipes are modified by physical methods, additives and The PVC resin is not fully combined, and the performance of the pipe will be reduced due to the migration of additives during use, so that it cannot meet the use requirements

Method used

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  • High-impact-resistant PVC rigid tube and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a. The proportion of raw materials by mass:

[0024] Ingredients Servings

[0025] High Impact PVC Composite Resin 100

[0026] Lubricant:

[0027] PE wax 2

[0028] Calcium Stearate 2

[0029] Barium Stearate 2

[0030] stabilizer:

[0031] Organotin T-178 4

[0032] filler:

[0033] Titanium dioxide 5

[0034] calcium carbonate 5

[0035] b. Add the proportioned raw materials in step a into the high mixer, heat up to 100°C, and mix for 10 minutes;

[0036] c. Put it into a cold mixing pot, cool to 40°C, release it, and let it mature for 24 hours;

[0037] d. Join the twin-screw pipe extruder, the processing temperature is 170°C, according to the CJ / T272-2008 standard, select the wall thickness of the pipe to be extruded, and carry out pipe extrusion.

Embodiment 2

[0039] a. The proportion of raw materials by mass:

[0040] Ingredients Servings

[0041] High Impact PVC Composite Resin 100

[0042] Lubricant:

[0043] PE wax 1

[0044] Calcium Stearate 2

[0045] Barium Stearate 1

[0046] stabilizer:

[0047] Organotin T-178 1

[0048] filler:

[0049] Titanium dioxide 5

[0050] calcium carbonate 10

[0051] b. Add the proportioned raw materials in step a into the high mixer, raise the temperature to 110°C, and mix for 8 minutes;

[0052] c. Put it into the cold mixing pot, cool to 35°C and let it out, let it mature for 24 hours;

[0053] d. Join the twin-screw pipe extruder, the processing temperature is 165°C, according to the CJ / T272-2008 standard, select the wall thickness of the pipe to be extruded, and carry out pipe extrusion.

Embodiment 3

[0055] a. The proportion of raw materials by mass:

[0056] Ingredients Servings

[0057] High Impact PVC Composite Resin 100

[0058] Lubricant:

[0059] PE wax 1

[0060] Calcium stearate 0.5

[0061] Barium stearate 0.5

[0062] stabilizer:

[0063] Organotin T-178 6

[0064] Filler: 0

[0065] b. Add the proportioned raw materials in step a into the high mixer, raise the temperature to 105°C, and mix for 8 minutes;

[0066] c. Put it into a cold mixing pot, cool to 40°C, release it, and let it mature for 24 hours;

[0067]d. Join the twin-screw pipe extruder, the processing temperature is 175°C, according to the CJ / T272-2008 standard, select the wall thickness of the pipe to be extruded, and carry out pipe extrusion.

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Abstract

The invention relates to the field of PVC rigid tube production, in particular to a high-impact-resistant PVC rigid tube and a preparation method thereof. At present, all high-tenacity PVC tubes are modified by a physical method, an additive and PVC resin are not completely combined, and during the use process of the tube, the performance of the tube is reduced caused by movement of the additive, so that the use requirement cannot be met. The preparation method comprises the following steps: adding high-impact-resistant PVC composite resin, a lubricant, a stabilizer and filler in a high-speed mixing machine, heating to 100-120 DEG C, and mixing for 3-15 min; putting the mixture in a cold mixing pot, cooling to 35-45 DEG C, discharging, and holding for 24 h; adding the mixture in an extruding machine, wherein the processing temperature is 150-190 DEG C, selecting the wall thicknesses of tubes to be extruded according to the standard, and extruding the tubes. A flexibilizer is not required to be added during the production of the tubes, and the product still has high tenacity.

Description

Technical field [0001] The present invention involves the production field of PVC hard pipes. Specifically, it is a high -resistant PVC hard pipe and its preparation method. Background technique [0002] PVC hard pipes have strong corrosion resistance, easy to bond, low price, and hard texture. It can be used to transport wastewater, chemicals, coolant, ultra -pure liquid, gas, compressed air and vacuum system.However, its ability to resist, lack of toughness, poor scratching ability, and poor transportation and installation processes, resulting in a large amount of raw materials, narrow applicable range, and slightly higher cost of use.In recent years, the emergence of PVC-M pipes has solved the insufficient toughness of PVC hard pipes, and improved its ability to resist, scratch, and carved injuries.The PVC resin is not completely combined. During the use, the performance of the pipe is reduced due to the relocation of the auxiliary, so that the use requirements cannot be met. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L23/06C08K13/02C08K5/098C08K5/57C08K3/22C08K3/26F16L9/12
Inventor 谭勇刘志强王会昌沈小宁徐英冯涛
Owner 河北盛华化工有限公司
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