Beta-PPR tube and preparation method thereof

A PP-R and pipe technology, which is applied in the field of β-PPR pipe and its preparation, can solve the problems of difficulty in general popularization, high price, complicated synthesis process, etc., and achieves the advantages of general popularization and use, reduction of raw material costs, and simple process. Effect

Active Publication Date: 2016-08-17
RIFENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the synthesis process of β-crystalline polypropylene material is relatively complicated, and only petrochemical plants can complete it, and this kind of β-PPR raw material is expensive, so it is difficult to popularize and use it.

Method used

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  • Beta-PPR tube and preparation method thereof
  • Beta-PPR tube and preparation method thereof
  • Beta-PPR tube and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A preparation method of a β-PPR pipe in this embodiment comprises the following steps:

[0042] (1) β nucleating agent surface treatment

[0043] Mix the coupling agent (KH-550) and the β-nucleating agent in a ratio of 1:100 parts by mass, and mix them evenly through a high-speed mixer, the speed of the mixer is 500-1000rpm, and the mixing time is 10-20min;

[0044] (2) Preparation of β-nucleating masterbatch

[0045] Mix the random copolymerized polypropylene resin (PP-R) with the β-nucleating agent obtained in step (1) according to the mass fraction of 100:20, fully stir with a high-speed mixer for 5-10min, and put it into the twin-screw extruder to extrude Granulation, barrel section temperature range: 170-200°C, mold section temperature range: 200-230°C, to obtain β-nucleation masterbatch;

[0046] The β-nucleating agent is TMB4 and WBG in a weight ratio of 1:0.2

[0047] (3) Preparation of β-PPR pipe

[0048] Mix random copolymerized polypropylene resin (PP-R),...

Embodiment 2

[0051] A preparation method of a β-PPR pipe in this embodiment comprises the following steps:

[0052] (1) β nucleating agent surface treatment

[0053] Mix the coupling agent (KR-TTS) and the β-nucleating agent in a ratio of 1:50 parts by mass, and mix them evenly through a high-speed mixer, the speed of the mixer is 500-1000rpm, and the mixing time is 10-20min;

[0054] (2) Preparation of β-nucleating masterbatch

[0055] Mix the random copolymer polypropylene resin (PP-R) with the β-nucleating agent after the surface treatment in step (1) according to the mass ratio of 100:20, fully stir with a high-speed mixer for 5-10min, and put it into the twin-screw extruder Extrusion granulation, the temperature range of the barrel section: 170-200°C, the temperature range of the mold section: 200-230°C, and the die temperature is 220-230°C to obtain β-nucleation masterbatch;

[0056] The β-nucleating agent is TMB5 and WBG in a weight ratio of 1:0.5.

[0057] (3) Preparation of β-PPR...

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Abstract

The invention relates to a beta-PPR tube and a preparation method thereof. The beta-PPR tube is prepared from the following raw materials in parts by mass: 100 parts of PP-R resin and 1-5 parts of beta nucleated master batch, wherein the beta nucleated master batch is prepared from the following raw materials in parts by mass: 100 parts of PP-R resin, 0.1-1 part of coupling agent and 10-30 parts of beta nucleator. The beta-PPR tube improves the low-temperature shock resistance of the tube and greatly reduces the problem of brittle cracking of the tube, and the preparation method has simple technique, reduces the raw material cost and is favorable for ordinary popularization and use.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a β-PPR pipe and a preparation method thereof. Background technique [0002] Random copolymerized polypropylene (PP-R) has the advantages of low density, excellent mechanical properties, stress crack resistance, environmental protection, non-toxicity, and easy processing and molding. It is made into PP-R pipes through extrusion and is mainly used for building water supply. Due to different crystallization conditions, polypropylene can usually form five crystal structures such as α, β, γ, δ and pseudo-hexagonal crystal, among which α crystal form is the most common and stable crystal form. However, the crystalline form of the α structure shows that PP-R has the characteristics of low temperature brittleness. Especially in the north where PP-R pipes are used and constructed under low temperature conditions, if the protection is improper and damaged by external forces, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K9/06C08K9/04C08K5/20C08K5/00C08J3/22
CPCC08J3/226C08J2323/14C08L23/14C08L2203/18C08L2205/242C08K9/06C08K5/20C08K5/00C08K9/04
Inventor 王军彭晓翊李白千李超浪
Owner RIFENG TECH CO LTD
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