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Special additive SYNOXM4228 for copolymerized polypropylene tube material and application thereof

A technology of copolymerizing polypropylene and additives, applied in the field of materials, can solve the problems of easy rupture of pipelines, complicated crystallization process, low impact strength, etc., and achieve the effects of good appearance quality, wide source, improved service life and aging resistance.

Inactive Publication Date: 2012-06-13
DALIAN XINGHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the action of external force, the crystallization process is complicated and stress is generated, and the pipeline is easily broken due to external force such as impact during use
Yang Aiwu mentioned in the development of special materials for PPR pipes for water supply (Modern Plastics Processing Application, 2002, 14(3): 5) that the PPR pipes he developed had good test results in hydraulic experiments, but the melt index was too high and the impact strength was too high. Low

Method used

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  • Special additive SYNOXM4228 for copolymerized polypropylene tube material and application thereof
  • Special additive SYNOXM4228 for copolymerized polypropylene tube material and application thereof
  • Special additive SYNOXM4228 for copolymerized polypropylene tube material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The distribution ratio of each component of the special additive (AD-1) is as follows:

[0028]

[0029]

[0030] The preparation method is as follows:

[0031] Put the above-mentioned raw material components into the screw powder conveyor, and then transfer them to the thermal mixer. After mixing and stirring for 30 minutes, set the temperature at 180°C under the protection of nitrogen, and mix and stir the components for 30 minutes in the molten state. Through the hydrogen bonds between molecules and the complexation of functional groups, each component re-arranges the molecules of each component in space, opens the gate of the thermal mixer, and removes the material system under the protection of nitrogen to cool it, enters the pulverizer and pulverizes it. Sieve with a 200-mesh sieve, and the sieved product is the required special additive SYNOXM4228.

Embodiment 2

[0033] The distribution ratio of each component of the special additive (AD-2) is as follows:

[0034]

[0035] The preparation method is as follows:

[0036] Put the above-mentioned raw material components into the screw powder conveyor, and then transfer them to the thermal mixer. After mixing and stirring for 30 minutes, set the temperature at 190°C under the protection of nitrogen, and mix and stir the components for 30 minutes in a molten state. Through the hydrogen bond between molecules and the complexation of functional groups, each component re-arranges the molecules of each component in space, opens the gate of the thermal mixer, removes the material system under the protection of nitrogen, and then enters the pulverizer for crushing and processing. Sieve with a 200-mesh sieve, and the sieved product is the required special additive SYNOXM4228.

Embodiment 3

[0038] The distribution ratio of each component of the special additive (AD-3) is as follows:

[0039]

[0040] The preparation method is as follows:

[0041] Put the above-mentioned raw material components into the screw powder conveyor, and then transfer them to the thermal mixer. After mixing and stirring for 30 minutes, set the temperature at 200°C under the protection of nitrogen, and mix and stir the components for 30 minutes in a molten state. Through the hydrogen bond between molecules and the complexation of functional groups, each component re-arranges the molecules of each component in space, opens the gate of the thermal mixer, removes the material system under the protection of nitrogen, and then enters the pulverizer for crushing and processing. Sieve with a 200-mesh sieve, and the sieved product is the required special additive SYNOXM4228.

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PUM

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Abstract

The invention discloses a special additive SYNOXM4228 for a copolymerized polypropylene tube material and application thereof. The special additive SYNOXM4228 comprises the following ingredients in parts by weight: 60-90 parts of antioxidant, 0-8 parts of light stabilizer, 4-15 parts of acid acceptor, 4-10 parts of lubricating agent and 0-8 parts of nucleating agent; the antioxidant is made from a hindered phenol antioxidant and a phosphite ester antioxidant which have a mass ratio of 1: (0.3-3); the light stabilizer is a hindered amine stabilizer; and the nucleating agent is an organic phosphate or aromatic carboxylate nucleating agent. By only adding a few of the special additive disclosed by the invention in a special material for preparing the copolymerized polypropylene tube material, the process properties and the mechanical properties of copolymerized polypropylene can be improved, the melt index in a process of processing the tube material is stabilized, the service life and the ageing-resistant degree of the tube material are improved, and the hygienic properties are excellent; and the price of the ingredients of the special additive disclosed by the invention is relatively low and the source of the ingredients is wide, so that the cost for producing and processing is obviously saved, and the industrial production is facilitated.

Description

technical field [0001] The invention belongs to the field of materials and relates to an additive, in particular to a special additive SYNOXM4228 for copolymerized polypropylene pipes and its preparation method and application. Background technique [0002] Since my country banned the use of galvanized pipes as water supply pipes in new residential buildings in 2000, polypropylene pipes and polyethylene pipes have made great progress. According to different PP polymerization process conditions, it can be divided into homopolymerized polypropylene (PP-H), block copolymerized polypropylene (PP-B) and random copolymerized polypropylene (PP-R). Because the brittleness of PP-H pipes at low temperatures limits its use, it is gradually replaced by PP-B pipes and PP-R pipes in some application fields. The two polypropylene copolymers have different thermodynamic properties and roughly similar mechanical properties at room temperature. Among them, PP-B pipes are mainly used in cold...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K13/02C08K5/3492C08K5/526C08K5/134C08K3/26C08K5/53C08K5/13C08K5/5333F16L9/12
Inventor 任国辉任春江
Owner DALIAN XINGHUI CHEM