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Super-cold-resistant impact-resistant high-toughness PP-R pipe material and preparation method thereof

A PP-R, impact-resistant technology, applied in the field of polymers, can solve the problems of PP-R pipes such as poor toughness, high low-temperature brittleness, and inability to transport water, so as to enhance toughness and impact resistance, enhance low-temperature resistance, and prolong pipe life. The effect of service life

Inactive Publication Date: 2015-09-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to solve the problems that the current PP-R pipe itself has poor toughness, easy aging, high low-temperature brittleness and the existing method can only be used at ultra-low temperature (-30°C to -10°C), Provided is a super cold-resistant, impact-resistant, strong-tough PP-R pipe material that can be used at -50°C to -30°C and its preparation method. The problem of not being able to transport water at -50°C to -30°C

Method used

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Examples

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Effect test

example 1

[0018] A super-cold-resistant, impact-resistant, strong-tough PP-R pipe material and a preparation method thereof, the raw materials thereof are in parts by weight: 85 parts of PP-R resin, and 15 parts of cold-resistant and toughened color masterbatch. Among them, the raw materials of cold-resistant and toughened masterbatch are: 55 parts of polypropylene, 20 parts of pigment, 20 parts of polyimide, and 5 parts of nano-calcium carbonate. The above ingredients are mixed, dried, and granulated to obtain a particle size of 80 mesh. Cold-resistant and toughened masterbatch. A PP-R pipe material with super cold resistance, impact resistance and toughness and a preparation method thereof: it comprises the following steps: first, according to the weight of raw materials, 85 parts of PP-R resin, and 80 meshes of cold-resistant and toughened color masterbatch are prepared; Put the configured raw materials into the twin-screw extruder, carry out mixed molding, cooling, and pelletizing t...

example 2

[0020] A PP-R pipe material with super cold resistance, impact resistance, strength and toughness and a preparation method thereof. The raw materials are calculated in parts by weight: 95 parts of PP-R resin, and 5 parts of cold-resistant and toughened color masterbatch. Among them, the raw materials of cold-resistant and toughened masterbatch are: 30 parts of polypropylene, 20 parts of pigment, 40 parts of polyimide, and 10 parts of nano-calcium carbonate. The above ingredients are mixed, dried, and granulated to obtain a particle size of 100 mesh. Cold-resistant and toughened masterbatch. A PP-R pipe material with super cold resistance, impact resistance and toughness and a preparation method thereof: it comprises the following steps: first, according to the weight parts of raw materials, 95 parts of PP-R resin and 100 meshes of cold-resistant and toughened color masterbatch are mixed, and then Put the configured raw materials into the twin-screw extruder, carry out mixed mo...

example 3

[0022] A PP-R pipe material with super cold resistance, impact resistance, strength and toughness and a preparation method thereof. The raw materials are 88 parts by weight of PP-R resin, and 12 parts by weight of cold-resistant and toughened color masterbatch. Among them, the raw materials of cold-resistant and toughened masterbatch are: 40 parts of polypropylene, 20 parts of pigment, 35 parts of polyimide, and 5 parts of rice calcium carbonate. Tough masterbatch. A PP-R pipe material with super cold resistance, impact resistance and toughness and a preparation method thereof, comprising the following steps: firstly, according to the weight of raw materials, 88 parts of PP-R resin and 90 meshes of cold-resistant and toughened color masterbatch are prepared; Put the configured raw materials into the twin-screw extruder, carry out mixed molding, cooling, and pelletizing to obtain modified material A, in which the first zone of the twin-screw extruder is 150°C, the second zone i...

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Abstract

The invention relates to a super-cold-resistant impact-resistant high-toughness PP-R pipe material and a preparation method thereof, belonging to the field of macromolecules. The method comprises the following steps: preparing materials by virtue of a PP-R resin and a cold-resistant toughened color master batch; adding the prepared raw materials into a twin-screw extruder, mixing, molding, cooling, and performing grain-sized dicing, thereby obtaining a modified material A; drying the modified material A in a drying box, thereby obtaining a modified material B; and finally, putting the modified material B on an injection molding machine, and performing injection molding to obtain the PP-R pipe. The PP-R pipe disclosed by the invention can be used at the temperature of 50 DEG C below zero to 30 DEG C below zero, the low temperature resistance of the pipe is enhanced, the water delivery problem in the northern area in winter is solved, the toughness and impact resistance of the PP-R pipe are enhanced, the PP-R pipe is difficult to age, and the service life is prolonged.

Description

technical field [0001] The invention discloses a PP-R pipe material with super cold resistance, impact resistance and toughness and a preparation method thereof, belonging to the polymer field. Background technique [0002] PP-R (polypropylene random) pipe is also called three-type polypropylene pipe and random copolymerized polypropylene pipe or PPR pipe. With the advantages of easy maintenance and long service life, it is widely used in construction, municipal, industrial and agricultural fields such as building water supply and drainage, urban and rural water supply and drainage, city gas, electric power and optical cable sheathing, industrial fluid transportation, and agricultural irrigation. The PP-R pipe is made of random copolymerized polypropylene, which is extruded into pipes and injection molded into pipe fittings. The PPR pipe itself has the disadvantages of poor toughness, easy aging, and high low temperature brittleness. [0003] At present, there are many way...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L79/04C08K3/26C08J3/22B29C47/92B29C45/77B29C45/78F16L9/12B29C48/92
CPCC08L23/14B29C45/77B29C45/78B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2323/14C08J2423/12C08K2201/011C08L2203/18C08L2205/03C08L2205/06C08L2310/00F16L9/12C08L23/12C08L79/04C08K2003/265
Inventor 郭迎庆薛红娟
Owner CHANGZHOU UNIV
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