CN113309931A

CN113309931A - PERT anti-fouling pipe

Info

Publication number: CN113309931A
Application number: CN202110548185.XA
Authority: CN
Inventors: 胡新斌; 李中魁; 窦中伟; 包加鸣; 周皖东; 李鹏
Original assignee: Xinxiang Aikang Building Material Co ltd
Current assignee: Xinxiang Aikang Building Material Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-27

Abstract

The invention discloses a PERT anti-fouling pipe, which comprises a pipe, wherein the pipe comprises an outer pipe layer and an inner pipe layer, the inner pipe layer is an anti-fouling layer, and the outer pipe layer comprises the following raw materials in parts by weight: 0.1-0.3 part of outer color master batch and 90-100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 2-3 parts of inner color master batch, 1-5 parts of anti-fouling and anti-scaling master batch and 90-100 parts of PE-RT resin. The invention can eliminate dirt in the pipeline and obviously improve the anti-scaling function of the pipe.

Description

PERT anti-fouling pipe

Technical Field

The invention relates to a PE pipe, in particular to a PERT anti-fouling pipe.

Background

PERT pipe is also called heat-resistant polyethylene pipe, is formed by copolymerizing medium-density polyethylene and octene, and is a non-crosslinked polyethylene pipe which can be used for hot water. Since the invention was invented in the 80 s of the last century, the novel plastic pipe product is widely applied to the fields of cold and hot water pipelines, solar pipes, secondary heating pipe networks and industrial pipes.

Since the PERT pipe is generally used for floor heating pipes, a large amount of slime, bacteria and scale are generated on the inner wall of the pipe and are attached to the inner wall of the pipe to form blockage of the pipe, so that water circulation is not smooth, heat dissipation is not enough, and heating temperature and effect are seriously affected. Practices show that after the floor heating pipe is used for one year, the temperature in the heat supply room is reduced by 6 ℃ when the inner wall of the floor heating pipe is polluted by 1mm, so that the normal use of the floor heating pipe is influenced, and the energy is wasted. Based on the wide application of the PERT pipe, in addition to the advantages of corrosion resistance, impact resistance, high temperature resistance, wear resistance and the like of the PERT pipe system, higher requirements are provided: the pipe has antifouling performance, and how to eliminate the scale in the pipeline is the problem that needs to be solved currently.

Disclosure of Invention

In view of the above, the present invention provides a PERT antifouling pipe, which can significantly improve the antifouling function of the pipe, aiming at the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the PERT antifouling pipe comprises a pipe body, wherein the pipe body comprises an outer pipe body layer and an inner pipe body layer, the inner pipe body layer is an antifouling layer, and the outer pipe body layer comprises the following raw materials in parts by weight: 0.1-0.3 part of outer color master batch and 90-100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 2-3 parts of inner color master batch, 1-5 parts of anti-fouling and anti-scaling master batch and 90-100 parts of PE-RT resin.

Preferably, the antifouling layer comprises the following raw materials in parts by weight: 3 parts of inner layer color master batch, 5 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

Preferably, the anti-fouling and anti-scaling master batch is organic silicon modified resin.

Preferably, the outer layer color master is a ground heating brilliant blue pearlescent color master, and the inner layer color master is a ground heating white master.

Preferably, the water surface contact angle of the inner layer of the pipe is greater than 100 °.

Preferably, the water surface contact angle of the inner wall of the pipe is 104-110 °

The invention has the beneficial effects that:

the PERT pipe has the functional characteristics that the inner layer pipe has an anti-scaling function, the bionic lotus leaf technology is applied, the surface lubricity of the inner wall of the pipe is improved by adding the anti-fouling and anti-scaling master batches into the inner layer, the water contact angle of the surface is increased, the angle of theta is effectively improved according to a Young formula (gamma SV ═ gamma SL + gamma LV multiplied by cos theta) in the interfacial tension of a wetting process and a system, when theta is larger than 90 degrees and a liquid is not wetted, the principle that the liquid is not wetted is adopted, and experiments prove that theta can be increased to more than 100 degrees, so that the liquid is difficult to be wetted into a solid, and the anti-scaling function of the pipe is remarkably improved.

The PERT antifouling and antiscaling pipe has the advantages of light weight, high strength and corrosion resistance of common plastic pipes, belongs to a green building material, and is non-toxic, odorless and good in sanitary performance; the environmental protection performance is excellent: can be recycled and reused, and has environmental protection benefit; the flexibility is good, the coil pipe is easy to bend, the coil pipe can be supplied, the installation and the use are convenient, and the construction operation is convenient; the service life is long: the service life can reach more than 50 years under normal conditions.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.

Detailed Description

The present invention will be further described with reference to the following examples, but is not limited thereto.

Example 1:

the PERT antifouling pipe comprises an outer pipe layer and an inner pipe layer, wherein the inner pipe layer is arranged on the inner wall of the outer pipe layer, and the inner pipe layer is an antifouling layer. The outer layer of the pipe comprises the following raw materials in parts by weight: 0.25 part of outer color master batch and 100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 3 parts of inner layer color master batch, 5 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

In this embodiment, the anti-fouling and anti-scaling master batch is organic silicon modified resin. The outer layer color master is ground heating brilliant blue pearlescent color master, and the inner layer color master is ground heating white color master. The water surface contact angle of the inner wall of the pipe is 104-110 DEG

The organic silicon modified resin is a high-molecular polymer, can resist dirt and scale for a long time, does not affect any physical and mechanical properties of the pipe, and can improve processing fluidity, impact resistance, ageing resistance and ultraviolet resistance, abrasion resistance, surface smoothness and scratch resistance.

The preparation method of the PERT anti-fouling pipe comprises the following steps: the outer layer of the pipe is formed by adding PE-RT resin and outer color master batch into a main machine, the inner layer of the pipe is formed by adding PERT resin firstly, then adding white master batch and antifouling and anti-scaling master batch into a stirrer, and after stirring uniformly, auxiliary machines suck materials in vacuum. The inner layer and the outer layer of the pipe are co-extruded simultaneously by adopting a single screw extruder. The mould is a special double-layer mould for a PERT antifouling and anti-scaling pipe.

Example 2:

the PERT antifouling pipe comprises an outer pipe layer and an inner pipe layer, wherein the inner pipe layer is arranged on the inner wall of the outer pipe layer, and the inner pipe layer is an antifouling layer. The outer layer of the pipe comprises the following raw materials in parts by weight: 0.1 part of outer color master batch and 100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 2 parts of inner layer color master batch, 3 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

The water surface contact angle of the inner wall of the tube of this example was 102 °.

Example 3:

the PERT antifouling pipe comprises an outer pipe layer and an inner pipe layer, wherein the inner pipe layer is arranged on the inner wall of the outer pipe layer, and the inner pipe layer is an antifouling layer. The outer layer of the pipe comprises the following raw materials in parts by weight: 0.1 part of outer color master batch and 100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 3 parts of inner layer color master batch, 4 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

The water surface contact angle of the inner wall of the tube of this example was 104 °.

Example 4:

the PERT antifouling pipe comprises an outer pipe layer and an inner pipe layer, wherein the inner pipe layer is arranged on the inner wall of the outer pipe layer, and the inner pipe layer is an antifouling layer. The outer layer of the pipe comprises the following raw materials in parts by weight: 0.3 part of outer color master batch and 100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 2 parts of inner layer color master batch, 5 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

The water surface contact angle of the inner wall of the tube of this example was 108 °.

The addition amounts of the anti-fouling and anti-scaling master batch and the PE-RT resin in the inner layer of the pipe are as follows, taking 100 parts of the PE-RT resin as an example, the finally obtained contact angle of the water surface of the inner wall of the pipe is as follows:

ratio of addition parts	0	1-2％	3-4％	5％
					Contact angle	85°—90°	95°—102°	100°—104°	104°—110°

The inner layer of the pipe has an anti-scaling function, the bionic lotus leaf technology is applied, the anti-scaling and anti-scaling master batches are added into the inner layer of the pipe, the surface lubricity of the inner wall of the pipe is improved, the water contact angle of the surface is increased, when theta is larger than 90 degrees and the liquid is not wetted according to a Young formula (gamma SV is gamma SL + gamma LV multiplied by cos theta) in the interfacial tension of a wetting process and a system, the angle of theta is effectively improved, and experiments prove that theta can be improved to more than 100 degrees, so that the liquid is difficult to be wetted into a solid, and the anti-scaling function of the pipe is obviously improved.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the person skilled in the art to the technical solutions of the present invention, such as changing the number or arrangement of the square grooves, should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A PERT antifouling pipe is characterized in that: the pipe comprises a pipe body, wherein the pipe body comprises a pipe outer layer and a pipe inner layer, the pipe inner layer is an anti-fouling layer, and the pipe outer layer comprises the following raw materials in parts by weight: 0.1-0.3 part of outer color master batch and 90-100 parts of PE-RT resin; the anti-fouling layer comprises the following raw materials in parts by weight: 2-3 parts of inner color master batch, 1-5 parts of anti-fouling and anti-scaling master batch and 90-100 parts of PE-RT resin.

2. The PERT antifouling tubing of claim 1, wherein: the anti-fouling layer comprises the following raw materials in parts by weight: 3 parts of inner layer color master batch, 5 parts of anti-fouling and anti-scaling master batch and 100 parts of PE-RT resin.

3. The PERT antifouling pipe as claimed in claim 1 or 2, wherein: the anti-fouling and anti-scaling master batch is organic silicon modified resin.

4. The PERT antifouling tubing of claim 1, wherein: the outer layer color master is a ground heating brilliant blue pearlescent color master, and the inner layer color master is a ground heating white color master.

5. The PERT antifouling tubing of claim 1, wherein: the water surface contact angle of the inner layer of the pipe is more than 100 degrees.

6. The PERT antifouling tubing of claim 5, wherein: the water surface contact angle of the inner wall of the pipe is 104-110 degrees.