Special-purpose multifunctional modified random polypropylene material for pipe and its preparing process and application

A polypropylene pipe and special material technology, applied in the field of plastic materials, can solve the problems of low notched impact strength, poor low-temperature notched impact performance, and unsatisfactory impact performance requirements, achieve excellent thermal stability, solve large shrinkage, The effect of good mechanical properties

Inactive Publication Date: 2009-11-18
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PP-R has many advantages, it also has disadvantages: the coefficient of thermal expansion is large at high temperature (95°C), the notched impact strength is not high, especially the impact performance at low temperature is not up to the requirements.
The above-mentioned patent application technology has the following disadvantages: the low-temperature notched impact performance is poor, it cannot meet the requirements under certain cold operating conditions, and it has no flame-retardant function, so it is not suitable for use in environments with flame-retardant requirements

Method used

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  • Special-purpose multifunctional modified random polypropylene material for pipe and its preparing process and application
  • Special-purpose multifunctional modified random polypropylene material for pipe and its preparing process and application
  • Special-purpose multifunctional modified random polypropylene material for pipe and its preparing process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Random copolymerized polypropylene (MFR=0.3g / 10min) 50 parts

[0044] Environmental Flame Retardant

[0045] (50 parts TDE, 30 parts PBDE and 20 parts Sb 2 o 3 ) 15 copies

[0046] Inorganic filler pre-dispersed masterbatch (HCT-1) 25 parts

[0047] Impact modifier POE-g-MA 10 parts

[0048] Antioxidant 1010 0.3 parts

[0049] Composite antibacterial masterbatch EMB-1 3 parts

[0050] Polyester type hyperdispersant 1 part

[0051] The preparation method of the special material for multifunctional modified random copolymerized polypropylene pipes comprises the following steps:

[0052] (1) In a 200L high-speed mixer, mix 25 parts of nano-calcium carbonate (30-65 nanometers in particle size), 10 parts of talcum powder (Liaoning Dongchen 1250 mesh) and heavy calcium carbonate according to the formula ratio in Table 1. (Particle size is 6-10 micron) 50 parts, stir at 400r / min speed, then add 0.5 parts of silane coupling agent (KH-550), 3 parts of macromolecule compati...

Embodiment 2

[0057] Random copolymerized polypropylene (MFR=0.6g / 10min) 60 parts

[0058] Environmental Flame Retardant

[0059] (30 parts TDE, 30 parts PBDE and 10 parts Sb 2 o 3 ) 10 copies

[0060] Inorganic filler pre-dispersed masterbatch (HCT-1) 20 parts

[0061] Impact modifier (CPE) 10 parts

[0062] Antioxidant 1098 0.2 parts

[0063] Composite antibacterial masterbatch EMB-1 2 parts

[0064] 1 part polypropylene wax

[0065] (1) In a 200L high-speed mixer, mix 25 parts of nano-calcium carbonate (30-65 nanometers in particle size), 10 parts of talcum powder (Liaoning Dongchen 1250 mesh) and heavy calcium carbonate according to the formula ratio in Table 1. (particle size of 6-10 microns) 50 parts, stirred at a speed of 400r / min, and then sequentially added 0.5 parts of silane coupling agent, 3 parts of macromolecule compatibilizer PP-g-AA and homopolypropylene (melt Volume flow rate is 10g / 10min) 10 parts, after adding, stir with 1000r / min speed for 1 minute to obtain the ...

Embodiment 3

[0070] Random copolymerized polypropylene (MFR=0.4g / 10min) 70 parts

[0071] Environmental Flame Retardant

[0072] (40 parts TDE, 50 parts PBDE and 15 parts Sb 2 o 3 ) 5 copies

[0073] Inorganic filler pre-dispersed masterbatch (HCT-2) 15 parts

[0074] Impact modifier (POE-g-MA) 10 parts

[0075] Antioxidant (B-215) 0.1 parts

[0076] Composite antibacterial masterbatch EMB-2 3 parts

[0077] 3 parts silicone oil

[0078] (1) In a 200L high-speed mixer, mix 10 parts of nano-calcium carbonate (30-65 nanometers in particle size), 5 parts of talcum powder (Liaoning Dongchen 1250 mesh) and heavy calcium carbonate according to the formula ratio in Table 1. (Particle size is 6-10 microns) 75 parts, stir at 400r / min speed, then add 2 parts of aluminate coupling agent and 6 parts of macromolecular compatibilizer PP-g-MA and homopolypropylene (The melt flow rate is 8g / 10min) 5 parts, after the addition is completed, stir with 600r / min speed for 3 minutes to obtain the mixtur...

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Abstract

The invention discloses a special material for multifunctional modified random polypropylene pipes and a preparation method thereof. The special material is composed of random copolymerized polypropylene, an environmentally friendly flame retardant, an inorganic filler pre-dispersed Composed of oxygen agent, composite antibacterial masterbatch and dispersant, the invention also discloses multifunctional modified random polypropylene pipe material used in construction pipes for hot and cold water, drinking water and food industry piping systems, floor heating and traditional heating Application in heating system, irrigation system of farmland. The special pipe material prepared by the invention has the function of flame retardant and antibacterial, and at the same time solves the problems of large shrinkage and poor low-temperature impact performance of random copolymerized polypropylene, has higher heat resistance and excellent mechanical properties, and has excellent thermal Stability, good shrinkage resistance and low temperature impact resistance.

Description

technical field [0001] The invention belongs to the technical field of plastic materials, and in particular relates to a special material for multifunctional modified random polypropylene pipes and a preparation method and application of the special material. Background technique [0002] Ethylene-propylene random copolymerization polypropylene (PP-R) is a kind of polypropylene, which is obtained by copolymerization of propylene and a small amount of ethylene under the action of certain temperature, pressure and catalyst. The structural characteristics make PP-R have properties that homopolypropylene (PP-H) or block graft copolymerized polypropylene (PP-B) do not have. In recent years, it has achieved rapid development in pipeline applications and other aspects. In the pipeline system mainly used at present, ethylene propylene random copolymer polypropylene (PP-R) not only has the advantages of light weight, good strength, corrosion resistance, long service life, simple and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08K5/47B29B9/12B29C47/40C08K5/06C08K3/22C08K3/36C08K3/16C08L51/06
Inventor 蒋文真李文国李刚
Owner 合诚技术股份有限公司
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