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Composition for enhancing dimensional stability of HDPE water supply pipe

A dimensional stability and composition technology, which is applied in the field of compositions that enhance the dimensional stability of HDPE water supply pipes, can solve the problems of poor dimensional stability of HDPE water supply pipes, and achieve easy control of processing technology, simple processing technology, and other excellent properties Effect

Inactive Publication Date: 2015-04-22
SHANGHAI BANGZHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of composition, is used for overcoming the shortcoming of poor dimensional stability of HDPE water supply pipe in the prior art

Method used

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  • Composition for enhancing dimensional stability of HDPE water supply pipe
  • Composition for enhancing dimensional stability of HDPE water supply pipe
  • Composition for enhancing dimensional stability of HDPE water supply pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Composition described in the present embodiment comprises the raw material component of following weight portion:

[0037]

[0038] Wherein, the polyethylene resin is a high-density polyethylene resin with a melt index of 0.7g / 10min at 190°C and 2.16kg;

[0039] The metal salt nucleating agent is sodium benzoate; the silane coupling agent is 3-aminopropyltriethoxysilane; the compatibilizer is polyethylene octene co-elastomer; the antioxidant is Antioxidant 1076.

[0040] The method for preparing the composition as described above in the present embodiment comprises the following steps:

[0041] 1) According to the parts by weight of each raw material component, polyethylene resin, metal salt nucleating agent, silane coupling agent, compatibilizer and antioxidant are mixed;

[0042] 2) adding to a twin-screw extruder to extrude and granulate. The extrusion temperature of the twin-screw extruder is 190° C., and the screw speed is 200 rpm.

Embodiment 2

[0044] Composition described in the present embodiment comprises the raw material component of following weight portion:

[0045]

[0046] Wherein, the polyethylene resin is a linear low-density polyethylene resin with a melt index of 5.1g / 10min at 190°C and 2.16kg;

[0047] The metal salt nucleating agent is calcium stearate; the silane coupling agent is 3-aminopropyltriethoxysilane; the compatibilizer is EPDM rubber; the antioxidant is Antioxidant 1010.

[0048] The method for preparing the composition as described above in the present embodiment comprises the following steps:

[0049] 1) the parts by weight of each raw material component, mixing polyethylene resin, metal salt nucleating agent, silane coupling agent, compatibilizer and antioxidant;

[0050] 2) adding to a twin-screw extruder to extrude and granulate. The extrusion temperature of the twin-screw extruder is 190° C., and the screw speed is 200 rpm.

Embodiment 3

[0052] Composition described in the present embodiment comprises the raw material component of following weight portion:

[0053]

[0054] Wherein, the polyethylene resin is a high-density polyethylene resin with a melt index of 1.1g / 10min at 190°C and 2.16kg;

[0055] The metal salt nucleating agent is zinc stearate; the silane coupling agent is 3-aminopropyltriethoxysilane; the compatibilizer is polyethylene wax; the antioxidant is antioxidant Agent 1010.

[0056] The method for preparing the composition as described above in the present embodiment comprises the following steps:

[0057] 1) According to the parts by weight of each raw material component, polyethylene resin, metal salt nucleating agent, silane coupling agent, compatibilizer and antioxidant are mixed;

[0058] 2) adding to a twin-screw extruder to extrude and granulate. The extrusion temperature of the twin-screw extruder is 190° C., and the screw speed is 200 rpm.

[0059]Add 2 wt% of the composition de...

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Abstract

The invention discloses a composition for enhancing dimensional stability of an HDPE water supply pipe, wherein the composition comprises the following raw material components in parts by weight: 100 parts of polyethylene resin, 1-15 parts of a metal salt nucleating agent, 5-15 parts of a silane coupling agent, 2-10 parts of a compatibilizer, and 0.1-1 part of an antioxidant. In the technical scheme of the invention, through mutual cooperation and combined action of the various components, the obtained composition has an obvious effect on enhancing the dimensional stability of the HDPE water supply pipe, the processing technology is simple and easy to control, and other properties of the water supply pipe keep similarly excellent.

Description

technical field [0001] The invention relates to a composition, in particular to a composition for enhancing the dimensional stability of HDPE water supply pipes. Background technique [0002] HDPE water supply pipe is a water supply pipe made of special HDPE as raw material and extruded by a plastic extruder at one time. It is widely used in urban water supply networks, irrigation water diversion projects, garbage treatment plants, sewage collection pipeline projects and agricultural sprinkler irrigation projects. . This is all due to the advantages of high strength, environmental stress resistance, crack resistance, and creep resistance of HDPE water supply pipes. However, as a polymer product, it has shrinkage characteristics, which will cause poor dimensional stability of the pipe. In general, the shrinkage process of polymer products mainly includes cooling shrinkage during the molding process and free shrinkage after molding; the latter is mainly affected by the second...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K5/098C08K5/544
CPCC08L23/06C08J3/226C08J2423/06C08J2423/08C08K2201/014C08L23/0815C08L2203/18C08L2205/025C08L2205/08C08L2205/24C08L2207/062
Inventor 毕宏海储江顺程安顺毕宏江
Owner SHANGHAI BANGZHONG NEW MATERIAL
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