Antioxidant master batch, and application thereof in production of PEX tubes

An antioxidant and masterbatch technology, applied in the application of antioxidant masterbatch in the preparation of PEX pipes, antioxidant masterbatch and its preparation field, can solve the problem of affecting the grafting rate of substrate dispersion, antioxidant and The reduction of peroxide content and other problems can meet the requirements of cross-linking degree, high controllability and improved production efficiency.

Inactive Publication Date: 2018-03-02
RIFENG ENTERPRISE FOSHAN CO LTD +2
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the reduction of the content of reactive antioxidants and peroxides, the dispersion problem during processing also affects the final grafting rate and dispersion in the substrate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Mixing of antioxidant masterbatch raw materials: LG XL1800, DTBP, and DBPA are mixed according to the weight ratio of 100:2:5, put into a high-speed mixer and stirred for 15 minutes at a stirring speed of 400RPM;

[0046] (2) Melt blending of antioxidant masterbatch raw materials: the mixture is fed from the barrel at one time, the speed of the single-screw extruder is 100RPM, and the temperature range is set at 120-150°C;

[0047] (3) Heat treatment: place the extruded pellets in a constant temperature oven, set the temperature at 190°C, the half-life of DTBP at this temperature is 0.7 minutes, set the pretreatment time to 1 times the half-life time, and then crush and granulate , to prepare antioxidant masterbatch.

[0048] (4) Mix high-density polyethylene (HDPE), antioxidant masterbatch, peroxide DTBP and lubricant polyethylene wax according to the weight ratio of 90:10:0.2:0.5 at high speed (100RPM) and mix thoroughly, from the main feed The feed port is put i...

Embodiment 2

[0051] (1) Mixing of antioxidant masterbatch raw materials: LG XL1800, DTBP, DBPA and TAC are mixed in a weight ratio of 100:2:5:2, put into a high-speed mixer and stirred for 15 minutes at a stirring speed of 400RPM;

[0052] (2) Melt blending of antioxidant masterbatch raw materials: the mixture is fed from the barrel at one time, the speed of the single-screw extruder is 100RPM, and the temperature range is set at 120-150°C;

[0053] (3) Heat treatment: place the extruded pellets in a constant temperature oven, set the temperature at 190°C, the half-life of DTBP at this temperature is 0.7 minutes, set the pretreatment time to 1 times the half-life time, and then crush and granulate , to prepare antioxidant masterbatch;

[0054] (4) Mix high-density polyethylene (HDPE), antioxidant masterbatch, initiator DTBP and lubricant polyethylene wax according to the weight ratio of 90:10:0.2:0.5 at high speed (100RPM) and mix thoroughly from the main feed The mouth is put into the pl...

Embodiment 3

[0057] (1) Mixing of antioxidant masterbatch raw materials: LG XL1800, DTBP, AOPP are mixed in a weight ratio of 100:2:5, put into a high-speed mixer and stirred for 15 minutes at a stirring speed of 400RPM;

[0058] (2) Melt blending of antioxidant masterbatch raw materials: the mixture is fed from the barrel at one time, the speed of the single-screw extruder is 100RPM, and the temperature range is set at 120-150°C;

[0059] (3) Heat treatment: place the extruded pellets in a constant temperature oven, set the temperature at 190°C, the half-life of DTBP at this temperature is 0.7 minutes, set the pretreatment time to 1 times the half-life time, and then crush and granulate , to prepare antioxidant masterbatch;

[0060] (4) Mix high-density polyethylene (HDPE), antioxidant masterbatch, peroxide DTBP and lubricant polyethylene wax according to the weight ratio of 90:10:0.2:0.5 at high speed (100RPM) and mix thoroughly, from the main feed The feed port is put into the plunger ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to view more

Abstract

The invention provides an antioxidant master batch, and an application thereof in the production of PEX tubes. The antioxidant master batch is prepared from, by weight, 100 parts of high density polyethylene, 0.1-4 parts of peroxide, 0-4 parts of an assistant crosslinker, and 0-10 (0 excluded, 10 included) parts of an antioxidant. When the antioxidant master batch is used to produce PEX-a tubes, the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of PEX pipe material preparation, in particular to an antioxidant masterbatch and a preparation method thereof, and the application of the antioxidant masterbatch in preparing PEX pipes. Background technique [0002] Crosslinked Polyethylene (PEX) contains chemical bonds to connect macromolecular chains and form a network structure, which significantly improves a series of physical properties such as heat resistance, wear resistance, chemical resistance and environmental stress cracking resistance of the material. Therefore, cross-linked polyethylene pipes are widely used in floor heating pipes, and the validity period of the pipes used in floor heating design is 50 years. Due to the long service life of this kind of floor heating pipe, antioxidant components are usually introduced in the production process to improve the long-term performance of the pipe. In recent years, reports on the migration of antiox...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/14
Inventor 钟宇华彭晓翊陈玉刘鑫苏政强李白千
Owner RIFENG ENTERPRISE FOSHAN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap