CN104072863A - Heavyweight corrugated pipe for concrete - Google Patents

Abstract

The invention discloses a heavyweight corrugated pipe for concrete. The heavyweight corrugated pipe comprises the following materials in parts by weight: 1-2 parts of calcium acetylacetonate, 0.7-1 part of hexamethylphosphoramide, 1-2 parts of bisimidazolidinyl urea, 10-12 parts of vermiculite powder, 1-2 parts of polyethylene glycol 400, 1-2 parts of white mineral oil, 2-3 parts of heavy calcium carbonate, 1-2 parts of ethylene diamine tetra(methylene phosphonic acid) sodium, 2-3 parts of charcoal powder, 1-2 parts of butyl p-hydroxybenzoate, 0.2-0.4 part of ammonium ethoxylated alkylphenol sulfate, 90-100 parts of polypropylene and 4-7 parts of composite additives. By virtue of the heavy corrugated pipe disclosed by the invention, the defect that the current polyethylene corrugated pipe is easily floated in the concrete construction due to the light weight is improved and the heavy corrugated pipe has the characteristics of good tensile strength and ring stiffness, good tolerance and strong impact resistance.

Description

A kind of the reinforcement of concrete heavy corrugated tube

Technical field

The present invention relates generally to tubing field, relates in particular to a kind of the reinforcement of concrete heavy corrugated tube and preparation method thereof.

Background technology

Polyacrylic degree of crystallinity is high, compound with regular structure, thereby there is good mechanical property.The absolute value of Mechanical Properties of PP is higher than polyethylene, but in plastic material, still belongs to kind on the low side, and its tensile strength only can reach 30 MPa or slightly high level.The polypropylene that isotactic index is larger has higher tensile strength, but with the raising of isotactic index, the shock strength of material declines to some extent, but no longer changes after dropping to a certain numerical value.

Temperature and loading rate are very large to polyacrylic Toughness.When temperature is during higher than second-order transition temperature, impact fracture is ductile rupture, is brittle rupture lower than second-order transition temperature, and impact value significantly declines.Improve loading rate, the temperature rise that can make ductile rupture change to brittle rupture.Polypropylene has excellent counter-bending fatigability, its goods bent 106 times and do not damage at normal temperatures;

Polyacrylic chemical stability is fine, outside decapacitation is corroded by the vitriol oil, concentrated nitric acid, all more stable to other various chemical reagent, but low-molecular-weight aliphatic hydrocarbon, aromatic hydrocarbon and chlorinated hydrocarbon etc. can make polypropylene softening and swelling, its chemical stability also increases with the increase of degree of crystallinity simultaneously, so polypropylene is applicable to making various chemical pipelines and accessory, anticorrosion ability is good; Preparing aspect corrugated tube, polypropylene has the features such as higher Young's modulus and lower density, can meet the performance requriements of corrugated tube completely.

Summary of the invention

The object of the invention is just to provide a kind of the reinforcement of concrete heavy corrugated tube and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of the reinforcement of concrete heavy corrugated tube, is characterized in that what it was made up of the raw material of following weight parts:

Calcium acetylacetonate 1-2, hexamethylphosphoramide 0.7-1, two Imidurea 1-2, vermiculite power 10-12, poly(oxyethylene glycol) 400 1-2, white mineral oil 1-2, water-ground limestone 2-3, ethylenediamine tetramethylene fork Alendronate 1-2, wood charcoal powder 2-3, butyl p-hydroxybenzoate 1-2, ethoxylated alkylphenol ammonium sulfate 0.2-0.4, polypropylene 90-100, composite assistant 4-7;

Described composite assistant is made up of the raw material of following weight parts:

Polypropylene 20-30, poly(vinylidene fluoride) 10-20, titanium nitride 1-2, silica gel silicon oil 1-2, sepiolite powder 20-30, dithiocyano-methane 0.1-0.2, the different monooctyl ester 2-3 of polyacrylic acid, ammonium octamolybdate 0.5-1,2,6 ditertiary butyl p cresol 0.4-1;

Above-mentioned polypropylene is mixed with poly(vinylidene fluoride), and at 100-120 DEG C, Heat preservation 20-30 minute, adds titanium nitride, grinds evenly, adds dithiocyano-methane, and 200-300 rev/min of dispersed with stirring 3-5 minute, must expect a;

Sepiolite powder is calcined to 2-3 hour at 600-700 DEG C, after discharging is cooling, add ammonium octamolybdate, add after different polyacrylic acid monooctyl ester is heated to 50-60 DEG C, under agitation condition, drip silica gel silicon oil, after dropwising, mix with material a and the each raw material of residue, fully ball milling, obtains described composite assistant.

A preparation method for the reinforcement of concrete heavy corrugated tube, comprises the following steps:

(1) above-mentioned white mineral oil, water-ground limestone, two Imidurea, wood charcoal powder are mixed to 300-400 rev/min of dispersed with stirring 12-20 minute;

(2) above-mentioned each raw material after treatment is mixed with the each raw material of residue, adopt twin screw granulation, by pellet extruding pipe material on twin screw extruder, tubing is pipe finished through cooling, cutting, hole enlargement, packaging etc.

Advantage of the present invention is:

Corrugated tube matter weight of the present invention, has improved current polytene corrugated tube quality light, and the defect easily floating in concrete construction, has good tensile strength and ring stiffness, better tolerance, and shock resistance is strong.

Embodiment

Embodiment 1

A kind of the reinforcement of concrete heavy corrugated tube, it is made up of the raw material of following weight parts:

Calcium acetylacetonate 1-2, hexamethylphosphoramide 0.7, two Imidurea 2, vermiculite power 12, poly(oxyethylene glycol) 400 2, white mineral oil 2, water-ground limestone 2, ethylenediamine tetramethylene fork Alendronate 2, wood charcoal powder 3, butyl p-hydroxybenzoate 1, ethoxylated alkylphenol ammonium sulfate 0.4, polypropylene 100, composite assistant 7;

Described composite assistant is made up of the raw material of following weight parts:

Polypropylene 30, poly(vinylidene fluoride) 20, titanium nitride 2, silica gel silicon oil 1, sepiolite powder 30, dithiocyano-methane 0.2, the different monooctyl ester 2 of polyacrylic acid, ammonium octamolybdate 0.5,2,6 ditertiary butyl p cresol 0.4;

Above-mentioned polypropylene is mixed with poly(vinylidene fluoride), and at 120 DEG C, Heat preservation 30 minutes, adds titanium nitride, grinds evenly, adds dithiocyano-methane, and 300 revs/min of dispersed with stirring 5 minutes, must expect a;

Sepiolite powder is calcined 3 hours at 700 DEG C, after discharging is cooling, added ammonium octamolybdate, add after different polyacrylic acid monooctyl ester is heated to 60 DEG C, under agitation condition, drip silica gel silicon oil, after dropwising, mix with material a and the each raw material of residue, fully ball milling, obtains described composite assistant.

A preparation method for the reinforcement of concrete heavy corrugated tube, comprises the following steps:

(1) above-mentioned white mineral oil, water-ground limestone, two Imidurea, wood charcoal powder are mixed to 400 revs/min of dispersed with stirring 20 minutes;

(2) above-mentioned each raw material after treatment is mixed with the each raw material of residue, adopt twin screw granulation, by pellet extruding pipe material on twin screw extruder, tubing is pipe finished through cooling, cutting, hole enlargement, packaging etc.

Performance test:

Ring stiffness (KN/m ²): 10.5;

Dimension card heat-resisting (10N, 50 DEG C/h): 157;

Drop impact (0 DEG C): qualified;

Degree of corrosion (60% hydrochloric acid, 60 DEG C, 165h): without layering, without cracked;

Degree of corrosion (40% sodium hydroxide, 60 DEG C, 165h): without layering, without cracked;

Ring is flexible: sample is round and smooth, without reverse bending, and crack-free.

Claims (2)

1. a reinforcement of concrete heavy corrugated tube, is characterized in that what it was made up of the raw material of following weight parts:

Calcium acetylacetonate 1-2, hexamethylphosphoramide 0.7-1, two Imidurea 1-2, vermiculite power 10-12, poly(oxyethylene glycol) 400 1-2, white mineral oil 1-2, water-ground limestone 2-3, ethylenediamine tetramethylene fork Alendronate 1-2, wood charcoal powder 2-3, butyl p-hydroxybenzoate 1-2, ethoxylated alkylphenol ammonium sulfate 0.2-0.4, polypropylene 90-100, composite assistant 4-7;

Described composite assistant is made up of the raw material of following weight parts:

Polypropylene 20-30, poly(vinylidene fluoride) 10-20, titanium nitride 1-2, silica gel silicon oil 1-2, sepiolite powder 20-30, dithiocyano-methane 0.1-0.2, the different monooctyl ester 2-3 of polyacrylic acid, ammonium octamolybdate 0.5-1,2,6 ditertiary butyl p cresol 0.4-1;

Above-mentioned polypropylene is mixed with poly(vinylidene fluoride), and at 100-120 DEG C, Heat preservation 20-30 minute, adds titanium nitride, grinds evenly, adds dithiocyano-methane, and 200-300 rev/min of dispersed with stirring 3-5 minute, must expect a;

Sepiolite powder is calcined to 2-3 hour at 600-700 DEG C, after discharging is cooling, add ammonium octamolybdate, add after different polyacrylic acid monooctyl ester is heated to 50-60 DEG C, under agitation condition, drip silica gel silicon oil, after dropwising, mix with material a and the each raw material of residue, fully ball milling, obtains described composite assistant.

2. a preparation method for the reinforcement of concrete heavy corrugated tube as claimed in claim 1, is characterized in that comprising the following steps:

(1) above-mentioned white mineral oil, water-ground limestone, two Imidurea, wood charcoal powder are mixed to 300-400 rev/min of dispersed with stirring 12-20 minute;

(2) above-mentioned each raw material after treatment is mixed with the each raw material of residue, adopt twin screw granulation, by pellet extruding pipe material on twin screw extruder, tubing is pipe finished through cooling, cutting, hole enlargement, packaging etc.