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Novel heat, wear and low temperature resistant PVC pipe

A technology for PVC pipes and low temperature resistance, which is applied in the field of new heat-resistant, wear-resistant, low-temperature and aging-resistant PVC pipes, which can solve the problems of poor heat resistance and wear resistance, short service life, easy aging, etc. Effects of life enhancement and low temperature resistance enhancement

Inactive Publication Date: 2015-07-08
章磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in order to solve the problem of poor heat resistance and wear resistance of PVC pipes, CPVC resin is added to PVC resin to increase its heat resistance and wear resistance
However, newly synthesized PVC pipes are easy to become hard and brittle under low temperature conditions, and are easy to age when used in a natural environment, with a short service life.
Seriously affects applications in low temperature environments and outdoor conditions

Method used

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  • Novel heat, wear and low temperature resistant PVC pipe
  • Novel heat, wear and low temperature resistant PVC pipe
  • Novel heat, wear and low temperature resistant PVC pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A new type of heat-resistant, wear-resistant and low-temperature-resistant PVC pipe, its components and weight percentages are:

[0015]

[0016]

[0017] The above-mentioned ingredients are hot-mixed and cold-mixed, and then extruded to form a pipe.

Embodiment 2

[0019] The heat resistance of the new heat-resistant, wear-resistant and low-temperature-resistant PVC pipe (referred to as sample 1) in Example 1 was compared with the existing heat-resistant and wear-resistant PVC pipe (referred to as sample 2).

[0020] The existing heat-resistant and wear-resistant PVC pipes prepare raw materials according to the following weight ratio:

[0021] 50 parts of PVC resin, 50 parts of CPVC resin, 3 parts of composite lead stabilizer, 0.6 part of paraffin wax, 0.4 part of polyethylene wax, 2 parts of ACR processing aid, 5 parts of MBS, 3 parts of nano calcium carbonate, 0.03 part of colorant carbon black.

[0022] After testing, it was found that the Vicat softening temperature of sample 1 was 112 degrees, and the Vicat softening temperature of sample 2 was 108 degrees.

[0023] It can be seen that there is not much difference between the two in heat resistance, and it is found through experiments that the two are basically the same in wear resi...

Embodiment 3

[0025] Experimental detection of low temperature resistance and service life of samples 1 and 2:

[0026] Sample 1 has not become hard and brittle after 2 days at minus 60 degrees, and sample 2 has become hard and brittle after 2 days at minus 40 degrees. Adding nano-SiO with a particle size of 30-50nm 2 , Sample 1 did not become hard and brittle after 2 days at minus 65 degrees.

[0027] Sample 1 was placed in an outdoor environment with an average temperature of 20 degrees, and it was found that it began to turn yellow after 250 days; sample 2 began to turn yellow after 130 days. After adding maleic anhydride, sample 1 began to turn yellow after 290 days in the same environment.

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Abstract

The invention provides a novel heat, wear and low temperature resistant PVC pipe. By adding thiobisphenol, phosphite ester, a phenolic resin cross-linking agent, polylol and carbon fiber, and defining the content of each component, the added elements can reach a very good synergistic effect. On the basis of keeping the original heat resistance and wear resistance, the low temperature resistance and service life of the PVC pipe are significantly enhanced, and the mechanical properties are also strengthened to certain extent.

Description

technical field [0001] The invention relates to a PVC pipe material, in particular to a novel heat-resistant, wear-resistant, low-temperature and aging-resistant PVC pipe material. Background technique [0002] In the prior art, in order to solve the problem of poor heat resistance and wear resistance of PVC pipes, CPVC resin is added to PVC resin to increase its heat resistance and wear resistance. However, newly synthesized PVC pipes tend to harden and become brittle under low temperature conditions, and are easy to age when used in a natural environment, with a short service life. It seriously affects the application in low temperature environment and outdoor conditions. Contents of the invention [0003] The invention provides a new type of heat-resistant, wear-resistant and low-temperature-resistant PVC pipe. By adding thiobisphenol, phosphite, phenolic resin crosslinking agent, polyol and carbon fiber, and limiting the content of each component, the added elements c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L33/04C08L51/04C08L61/06C08L27/24C08K13/04C08K7/06C08K5/375C08K5/524C08K5/053C08K3/26
Inventor 章磊
Owner 章磊