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CPVC fire-fighting pipe and preparation method thereof

A technology of CPVC resin and fire-fighting pipe, applied in the field of CPVC fire-fighting pipe and its preparation, can solve the problems of low Vicat softening point, high torque, and low flame-retardant performance of CPVC fire-fighting pipe, achieve good market prospects, improve processing performance, The effect of reducing the processing load

Active Publication Date: 2021-12-03
WUXI HONGHUI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the processing performance of CPVC fire pipes, a common method is to add an acrylic ester processing aid ACR to the CPVC resin formulation system. The processing aid ACR will cause CPVC to have a higher torque during processing and lead to The Vicat softening point of CPVC fire pipe is reduced, and the flame retardant performance is reduced

Method used

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  • CPVC fire-fighting pipe and preparation method thereof
  • CPVC fire-fighting pipe and preparation method thereof
  • CPVC fire-fighting pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] CPVC fire-fighting pipes, in parts by weight, include the following components:

[0044]

[0045]

[0046] During the preparation of the CPVC fire pipe, the mixture was heated from room temperature to 125°C by self-friction within 10 minutes, and then lowered to 45°C.

[0047] The conical twin-screw extruder adopts zone temperature control, the temperature of the first zone is 170°C, the temperature of the second zone is 190°C, the temperature of the third zone is 193°C, and the temperature of the fourth zone is 190°C.

[0048] The traction speed of the material after being extruded from the conical twin-screw extruder is 2m / min.

Embodiment 2

[0050] CPVC fire-fighting pipes, in parts by weight, include the following components:

[0051]

[0052] During the preparation of the CPVC fire pipe, the mixture was heated from room temperature to 128°C by self-friction within 12 minutes, and then lowered to 48°C.

[0053]The conical twin-screw extruder adopts zone temperature control, the temperature of the first zone is 172°C, the temperature of the second zone is 193°C, the temperature of the third zone is 195°C, and the temperature of the fourth zone is 192°C.

[0054] The pulling speed of the material after being extruded from the conical twin-screw extruder is 2.5m / min.

Embodiment 3

[0056] CPVC fire-fighting pipes, in parts by weight, include the following components:

[0057]

[0058] During the preparation of the CPVC fire pipe, the mixture was heated from room temperature to 130°C by self-friction within 15 minutes, and then lowered to 50°C.

[0059] The conical twin-screw extruder adopts zone temperature control, the temperature of the first zone is 175°C, the temperature of the second zone is 195°C, the temperature of the third zone is 198°C, and the temperature of the fourth zone is 195°C.

[0060] The pulling speed of the material after being extruded from the conical twin-screw extruder is 3m / min.

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a CPVC fire-fighting pipe and a preparation method thereof. The addition of an acrylic ester processing aid ACR in a CPVC resin formula system can lead to high torque of CPVC in the processing process and also lead to reduction of the vicat softening point of the CPVC fire-fighting pipe. In order to solve the problems, the CPVC fire-fighting pipe provided by the invention contains a self-made processing-aiding modifier, the processing-aiding modifier is obtained by copolymerizing vinyl chloride, vinylidene chloride and vinyl versatate as raw materials, and the chain structure of vinyl chloride and vinylidene chloride in the molecular structure of the processing-aiding modifier has good compatibility with CPVC, and the comprehensive performance of the CPVC fire-fighting pipe can be improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a CPVC fire-fighting pipe and a preparation method thereof. Background technique [0002] In recent years, thanks to the vigorous development of real estate and the needs of the renovation of old communities, plastic pipes have achieved unprecedented development. Among them, CPVC fire-fighting pipes are favored by people because of their flame-retardant, heat-resistant, chemical-resistant, antibacterial, and long-life characteristics, and their usage is increasing. [0003] The application of CPVC fire-fighting pipes has high requirements for its processing performance, heat resistance, flame retardancy and impact resistance. In order to improve the processing performance of CPVC fire pipes, a common method is to add acrylic ester processing aid ACR to the CPVC resin formulation system. The processing aid ACR will cause CPVC to have a higher torque during processing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/24C08L27/06C08K5/58
CPCC08L27/24C08L2201/08C08L2203/18C08L27/06C08K5/58Y02A20/20
Inventor 孙立坤陈建溢姚宏华时劲松项梁
Owner WUXI HONGHUI NEW MATERIALS TECH
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