CN104927167A - Corrosion resistant PE water pipe preparation method - Google Patents

Abstract

The invention discloses a corrosion resistant PE water pipe preparation method. The method includes 1, preparing various raw materials according to various requirements; 2, feeding the raw materials of polyethylene, diisopropanolamine, 2,4-dihydroxyacetophenone, methyl thiopropionate, stearate, tocopheryl acetate and clay nanocomposite material into a high-speed mixer, mixing, spraying, cooling, and obtaining the mixed material A; 3, feeding the raw materials of calcium aluminate, titania and zinc oxide into a gas stream pulverizing device for pulverizing, and obtaining the mixed material B; 4, feeding the mixed material A and the mixed material B into the mixer, mixing for 30min, and obtaining the mixed material C; 5, extruding the mixed material C into the cavity of injection and forming equipment, cooling, shaping, and obtaining a finished product. The pipe has the advantages of excellent corrosion resistance and high strength and toughness.

Description

A kind of preparation method of corrosion resistant PE water service pipe

Technical field

The present invention relates to tubing field, particularly a kind of preparation method of corrosion resistant PE water service pipe.

Background technology

PE water service pipe is widely used in building water supply, construction drainage, buried drain pipe etc.PE water service pipe has the following advantages: 1, transport performance is good, and the water delivery energy consumption of PE water service pipe is low, life energy consumption is low, lightweight, flow resistance is little, simple installation is rapid, cost is low, the life-span is long, have heat insulation function etc.; 2, have unique snappiness and the ability of excellent resistance to scratch, good flexibility makes PE water service pipe coil, and supplies with longer length, avoids a large amount of joints and pipe fitting; 3, there is good rapid crack and increase fracture toughness property, the pipe leakage accident occurred because pipeline generation rapid crack increases fracture can be reduced.In recent years, along with the development of science and technology, the performance requriements of people to PE water service pipe is also more and more higher, the PE water service pipe that the PE water service pipe production technology adopted in the market is produced, although have certain corrosion resistance nature, but corrosion resistance nature does not reach the requirement of people, especially in acid, alkali, the medium that the multiple corrodibility of wet goods is strong is deposited in case jointly, PE water service pipe more easily corrodes, seriously decrease the work-ing life of PE water service pipe, reduce the use properties of PE water service pipe greatly, cause the wasting of resources in PE water service pipe field, increased the weight of the pollution to environment simultaneously.At present, China there is no a kind of production method of producing the strong PE water service pipe of erosion resistance.

Summary of the invention

For above deficiency, the technical problem to be solved in the present invention is: the preparation method providing a kind of corrosion resistant PE water service pipe.

For achieving the above object, the present invention realizes by the following technical solutions:

1) by getting out various required starting material, for subsequent use;

2) by polyethylene, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 60 ~ 90min of 5000 ~ 7500r/min, after temperature is increased to 110 ~ 120 degree, spray with spray water, cool the temperature to 50 ~ 65 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 300 ~ 400 orders, then put into cooling apparatus and be cooled to 27 ~ 32 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 60 ~ 70 degree, and the speed of clamp-oning is 0.1 ~ 0.3m/min, then cooling and shaping, can obtain the present invention.

Such scheme, further, in step 1), described raw-material weight percent is as follows:

Polyethylene 94% ~ 98%, calcium metaaluminate 0.2% ~ 0.8%, diisopropanolamine (DIPA) 0.1% ~ 0.6%, 2,4-dihydroxyacetophenone 0.3% ~ 0.5%, sulphur methyl propionate 0.4% ~ 0.7%, titanium dioxide 0.2% ~ 0.6%, stearic acid 0.2% ~ 0.5%, VITAMIN E ACETATE 0.4% ~ 1.2%, zinc oxide 0.4% ~ 1.1%, clay nanocomposites 1% ~ 5%.

Beneficial effect of the present invention is:

The present invention with the addition of the raw material improving HDPE rotproofness in the feed, carry out height to the inorganic materials in raw material to pulverize, inorganic materials after pulverizing has good dispersiveness in HDPE, can significantly improve the antiseptic property of HDPE, can also strengthen intensity, the toughness of HDPE simultaneously.PE water service pipe prepared by employing the present invention, antiseptic property is excellent, intensity is high, good toughness.

Embodiment

Further illustrating the present invention below in conjunction with specific embodiment, but the present invention is not limited only to following examples.

Embodiment 1

A preparation method for corrosion resistant PE water service pipe, comprises the following steps:

1) various required starting material are got out, starting material comprise following component: polyethylene (HDPE), calcium metaaluminate, diisopropanolamine (DIPA), 2,4-dihydroxyacetophenone, sulphur methyl propionate, titanium dioxide, stearic acid, VITAMIN E ACETATE, zinc oxide, clay nanocomposites;

2) by the polyethylene in starting material, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 90min of 5000r/min, after temperature is increased to 110 degree, spray with spray water, cool the temperature to 65 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 300 orders, then put into cooling apparatus and be cooled to 32 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 60 degree, and the speed of clamp-oning is 0.3m/min, then cooling and shaping, can obtain finished product.

In step 1), described raw-material weight percent is: polyethylene (HDPE) 94% ~ 98%, calcium metaaluminate 0.2% ~ 0.8%, diisopropanolamine (DIPA) 0.1% ~ 0.6%, 2,4-dihydroxyacetophenone 0.3% ~ 0.5%, sulphur methyl propionate 0.4% ~ 0.7%, titanium dioxide 0.2% ~ 0.6%, stearic acid 0.2% ~ 0.5%, VITAMIN E ACETATE 0.4% ~ 1.2%, zinc oxide 0.4% ~ 1.1%, clay nanocomposites 1% ~ 5%.

Embodiment 2

A preparation method for corrosion resistant PE water service pipe, comprises the following steps:

1) various required starting material are got out, starting material comprise following component: polyethylene (HDPE), calcium metaaluminate, diisopropanolamine (DIPA), 2,4-dihydroxyacetophenone, sulphur methyl propionate, titanium dioxide, stearic acid, VITAMIN E ACETATE, zinc oxide, clay nanocomposites;

2) by the polyethylene in starting material, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 60min of 7500r/min, after temperature is increased to 120 degree, spray with spray water, cool the temperature to 50 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 400 orders, then put into cooling apparatus and be cooled to 27 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 70 degree, and the speed of clamp-oning is 0.1m/min, then cooling and shaping, can obtain finished product.

In step 1), described raw-material weight percent is: polyethylene (HDPE) 94% ~ 98%, calcium metaaluminate 0.2% ~ 0.8%, diisopropanolamine (DIPA) 0.1% ~ 0.6%, 2,4-dihydroxyacetophenone 0.3% ~ 0.5%, sulphur methyl propionate 0.4% ~ 0.7%, titanium dioxide 0.2% ~ 0.6%, stearic acid 0.2% ~ 0.5%, VITAMIN E ACETATE 0.4% ~ 1.2%, zinc oxide 0.4% ~ 1.1%, clay nanocomposites 1% ~ 5%.

Embodiment 3

A preparation method for corrosion resistant PE water service pipe, comprises the following steps:

1) various required starting material are got out, starting material comprise following component: polyethylene (HDPE), calcium metaaluminate, diisopropanolamine (DIPA), 2,4-dihydroxyacetophenone, sulphur methyl propionate, titanium dioxide, stearic acid, VITAMIN E ACETATE, zinc oxide, clay nanocomposites;

2) by the polyethylene in starting material, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 80min of 6000r/min, after temperature is increased to 115 degree, spray with spray water, cool the temperature to 60 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 350 orders, then put into cooling apparatus and be cooled to 30 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 65 degree, and the speed of clamp-oning is 0.2m/min, then cooling and shaping, can obtain finished product.

Embodiment 4

A preparation method for corrosion resistant PE water service pipe, comprises the following steps:

1) various required starting material are got out, starting material comprise following component: polyethylene (HDPE), calcium metaaluminate, diisopropanolamine (DIPA), 2,4-dihydroxyacetophenone, sulphur methyl propionate, titanium dioxide, stearic acid, VITAMIN E ACETATE, zinc oxide, clay nanocomposites;

2) by the polyethylene in starting material, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 70min of 6500r/min, after temperature is increased to 110 degree, spray with spray water, cool the temperature to 65 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 400 orders, then put into cooling apparatus and be cooled to 30 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 68 degree, and the speed of clamp-oning is 0.3m/min, then cooling and shaping, can obtain finished product.

Such scheme, in step 1), described raw-material weight percent is: polyethylene (HDPE) 94% ~ 98%, calcium metaaluminate 0.2% ~ 0.8%, diisopropanolamine (DIPA) 0.1% ~ 0.6%, 2,4-dihydroxyacetophenone 0.3% ~ 0.5%, sulphur methyl propionate 0.4% ~ 0.7%, titanium dioxide 0.2% ~ 0.6%, stearic acid 0.2% ~ 0.5%, VITAMIN E ACETATE 0.4% ~ 1.2%, zinc oxide 0.4% ~ 1.1%, clay nanocomposites 1% ~ 5%.

Claims (2)

1. a preparation method for corrosion resistant PE water service pipe, is characterized in that, comprise the following steps:

1) by getting out various required starting material, for subsequent use;

2) by polyethylene, diisopropanolamine (DIPA), 2,4-resacetophenone, sulphur methyl propionate, stearic acid, VITAMIN E ACETATE, clay nanocomposites put into high-speed mixing stirrer, with the rotating speed high speed rotating 60 ~ 90min of 5000 ~ 7500r/min, after temperature is increased to 110 ~ 120 degree, spray with spray water, cool the temperature to 50 ~ 65 degree, obtain mixture A, for subsequent use;

3) calcium metaaluminate, titanium dioxide, zinc oxide are put into Jet Mill, be crushed to 300 ~ 400 orders, then put into cooling apparatus and be cooled to 27 ~ 32 degree, obtain mixed powder B, for subsequent use;

4) by step 2) the mixture A that makes puts into mixing and blending machine, adds mixed powder B prepared by step 3), stirs 30min, make mixture C, for subsequent use;

5) clamp-on in the chamber of injection forming equipment by mixture C, chamber temp is 60 ~ 70 degree, and the speed of clamp-oning is 0.1 ~ 0.3m/min, then cooling and shaping, can obtain finished product.

2. the preparation method of corrosion resistant PE water service pipe according to claim 1, is characterized in that, in step 1), described raw-material weight percent is as follows:

Polyethylene 94% ~ 98%, calcium metaaluminate 0.2% ~ 0.8%, diisopropanolamine (DIPA) 0.1% ~ 0.6%, 2,4-dihydroxyacetophenone 0.3% ~ 0.5%, sulphur methyl propionate 0.4% ~ 0.7%, titanium dioxide 0.2% ~ 0.6%, stearic acid 0.2% ~ 0.5%, VITAMIN E ACETATE 0.4% ~ 1.2%, zinc oxide 0.4% ~ 1.1%, clay nanocomposites 1% ~ 5%.