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Modified master batch for enhancing toughness of PPR water supply pipe

A water supply pipe and modification technology, which is applied in the field of modified masterbatch, can solve the problems of poor comprehensive performance of PPR pipes, inability to take into account low temperature toughness, impact performance and other service properties.

Inactive Publication Date: 2015-04-08
SHANGHAI BANZAN MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a modified masterbatch for enhancing the toughness of PPR water supply pipes, which is used to overcome the poor comprehensive performance of PPR pipes in the prior art at low temperature, and the inability to take into account low temperature toughness, impact performance and other performance. shortcoming

Method used

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  • Modified master batch for enhancing toughness of PPR water supply pipe
  • Modified master batch for enhancing toughness of PPR water supply pipe
  • Modified master batch for enhancing toughness of PPR water supply pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0041]

[0042] Wherein the melt index of the random copolymerized polypropylene resin at 230° C. under 2.16 kg is 8 g / 10 min; the model of the rare earth β nucleating agent is WBG-II; the content of VA in the EVA is 18%.

[0043] The above-mentioned substances are first dispersed evenly by a high-grade mixer, then added to a twin-screw extruder for extrusion, cooling, and granulation. The extrusion temperature of the twin-screw extruder is 190-210°C, and the high Special modified masterbatch for toughness enhancement.

Embodiment 2

[0045]

[0046] The above-mentioned substances are first dispersed uniformly by a high-speed mixer, and then extruded and granulated by twin-screws to obtain a special modified masterbatch for strengthening the high toughness of the PPR water supply pipe.

[0047] Wherein the homopolypropylene resin has a melt index of 2.1g / 10min at 230°C and 2.16kg; the model of the aramid nucleating agent is NB-328; the VA content in the EVA is 25%.

[0048] Add the above components into a high-speed mixer and mix them evenly, and then extrude them in a twin-screw extruder to obtain a modified masterbatch for enhancing the toughness of the PPR water supply pipe. The extrusion temperature of the twin-screw extruder is 190-210°C.

Embodiment 3

[0050]

[0051] The above-mentioned substances are first dispersed uniformly by a high-speed mixer, and then extruded and granulated by twin-screws to obtain a special modified masterbatch for strengthening the high toughness of the PPR water supply pipe.

[0052] The melt index of the homopolypropylene resin at 230° C. under 2.16 kg is 1.2 g / 10 min. The model of the aromatic amide nucleating agent is NB-328; the VA content in the EVA is 15%.

[0053] The modified masterbatch prepared in Examples 1, 2 and 3 was evenly mixed with the pipe material PPR, and then extruded and granulated by a twin-screw extruder. Wherein the extrusion temperature of the twin-screw extruder is 200-230° C., wherein the head temperature is 200-225° C., the screw speed is 270 rpm; the residence time is 1 minute; the vacuum degree is 2.5 MPa.

[0054]In Examples 1 to 3, the PPR pipeline splines doped with the above-mentioned modified masterbatch are prepared according to the common methods in the p...

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Abstract

The invention discloses a modified master batch for enhancing the toughness of a PPR water supply pipe, wherein the modified master batch comprises the following raw material components in parts by weight: 100 parts of polypropylene resin, 0.01-5 parts of a beta nucleating agent, 1-40 parts of an inorganic filling agent, 1-50 parts of an elastomer, and 0.1-1 part of an antioxidant. The modified master batch disclosed by the invention can take the material toughness, ductility, impact resistance, strength and the like into account, so that the PPR water supply pipe shows excellent comprehensive performance and better processability.

Description

technical field [0001] The invention relates to a composition, in particular to a modified masterbatch for enhancing the toughness of a PPR water supply pipe. Background technique [0002] PPR is random copolymerized polypropylene. PPR pipe is a newly developed pipe for construction in the history of international pipe development, especially in the application of water supply pipes, which has surpassed aluminum-plastic composite pipes. PPR resin is the main raw material for producing PPR pipes, which is obtained by copolymerizing propylene and a small amount of olefin monomer under the action of heating, pressure and catalyst. PPR resin has excellent comprehensive properties and can meet the requirements of water delivery under general conditions, but its poor low temperature toughness greatly limits the application of PPR pipes. The patent with domestic application number 201310678221.X discloses a low-temperature PPR pipe, whose raw material components include 1-2 parts ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08C08K13/02C08K3/26C08K5/134C08J3/22
CPCC08L23/14C08J3/226C08K2201/011C08L23/12C08L2205/242C08L23/0853C08K2003/265C08K5/1345C08K3/36C08K13/02C08K5/372
Inventor 毕宏海储江顺程安顺毕宏江
Owner SHANGHAI BANZAN MACROMOLECULE MATERIAL
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