A PVC drainage pipe and preparation method thereof

Abstract

The present invention discloses a PVC drainage pipe and a preparation method thereof, which is made of the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium-zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride. In the present invention, monoglyceride can well act as an internal lubricant, plasticizer, etc. in the PVC drainage pipe formula component; the monoglyceride material can improve the fluidity of PVC materials in production, reduce friction, and make processing smoother; in the PVC drainage formula component, the monoglyceride can also play a certain plasticizing role, improve the stability of the PVC formula in production, and prevent other materials from changing in performance during processing. In addition, the monoglyceride material can also play a certain role in increasing the brightness of the PVC drainage pipe and improving product quality.

Description

Technical Field

[0001] The invention relates to the technical field of polyvinyl chloride resins, in particular to a PVC drainage pipe and a preparation method thereof. Background Art

[0002] The current PVC drainage pipe formula consists of SG-5 resin powder, calcium zinc stabilizer, external lubricant, stearic acid lubricant, high melting point lubricant, low melting point lubricant, and calcium carbonate filler.

[0003] There are technical disadvantages: the formula has too many components and the types of lubricants are complicated. The proportion of lubricant components in the formula is complicated and the adjustment needs to consider the proportion of stearic acid, high melting point lubricant, low melting point lubricant, stabilizer, filler, etc. The adjustment is too complicated and requires the development of formulas with different component structures using different machines, which is not conducive to production. Summary of the invention

[0004] The purpose of the present invention is to provide a PVC drainage pipe and a preparation method thereof, so as to solve the problem in the prior art that the formula composition is too much, the types of lubricants are complicated, the proportion of the lubricant components in the formula is complicated each time the adjustment needs to consider the proportion of stearic acid, high melting point lubricant, low melting point lubricant, stabilizer, filler, etc. The adjustment is too complicated and requires the use of different machines to develop formulas with different component structures, which is not conducive to production.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a PVC drainage pipe, made of the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium-zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride.

[0006] Preferably, it is made of the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 4 parts of calcium-zinc composite stabilizer, 0.2 parts of external lubricant, 0.3 parts of high melting point lubricant, 10 parts of calcium carbonate filler, and 1 part of monoglyceride.

[0007] Preferably, the external lubricant is stearic acid or paraffin; the high melting point lubricant is polyethylene wax.

[0008] Preferably, it also includes a pipeline body, a filtering and detecting pipeline assembly and a connecting assembly. Adjacent pipeline bodies are connected via the connecting assembly, and the filtering and detecting pipeline assembly is installed at one end of one of the pipeline bodies.

[0009] Preferably, the filter detection pipe assembly includes a filter pipe, both ends of the filter pipe are equipped with sealing heads, and a first connecting flange is installed at the sealing head; three limiting protrusions are arranged on the outside of the filter pipe, and an outer sleeve is installed on the outside of the limiting protrusions of the filter pipe, and the filter pipe is provided with coarse filter holes and fine filter holes respectively between adjacent limiting protrusions, the outer sleeve is equipped with a first external joint at the coarse filter hole, and the outer sleeve is equipped with a second external joint at the fine filter hole.

[0010] Preferably, the connecting assembly includes a second flange and a third flange, the third flange is provided with a plug at one end of the second flange, at least two sealing rings are provided between the second flange and the third flange, a latch is provided at the connection between the second flange and the pipeline body, a latch is provided at the connection between the third flange and the pipeline body, the pipeline body is provided with a groove cooperating with the latch, and the second flange and the third flange are both provided with slots cooperating with the latch.

[0011] Preferably, the thickness of the outer end of the slot is smaller than the thickness of the inner end of the slot, and the thickness of the outer end of the pin is smaller than the thickness of the inner end of the slot.

[0012] A method for preparing a PVC drainage pipe comprises the following steps:

[0013] S1. Raw material preparation: prepare raw materials according to 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride;

[0014] S2, mixing: SG-5 type PVC resin powder, calcium zinc composite stabilizer, external lubricant, high melting point lubricant, calcium carbonate filler and monoglyceride are mixed using a high-speed mixer;

[0015] S3, extrusion molding: the mixed raw materials are fed into the extruder, and the PVC resin is melted by heating; the molten PVC is extruded through the die to form the required pipe shape; the hot pipe just extruded enters the cooling device to be quickly cooled and solidified;

[0016] S4, connection processing: assembling the obtained pipe parts into a PVC drainage pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Monoglyceride can play a good role as an internal lubricant and plasticizer in the formula components of PVC drainage pipes; it solves the problem of too many lubricant types in the formula and the complicated adjustment of the proportion of lubricant components in the formula each time.

[0019] Monoglyceride materials can improve the fluidity of PVC materials during production, reduce friction and make processing smoother; in the components of PVC drainage formula, monoglyceride can also play a certain plasticizing role, improve the stability of PVC formula in production, and prevent other materials from experiencing performance changes during processing. In addition, monoglyceride materials can also play a certain role in increasing the brightness of PVC drainage pipes and improving product quality.

[0020] The outer sleeve is provided with a first external joint at the coarse filter hole, and the outer sleeve is provided with a second external joint at the fine filter hole. Through the filter holes of different coarsenesses, the first external joint and the second external joint extract different particles from the water in the water pipe, so that the situation of the particles can be roughly observed; the first external joint and the second external joint can also be used to pressurize the inside of the pipeline to ensure smooth flow of the pipeline.

[0021] A latch is provided at the connection between the third flange and the pipe body, a groove cooperating with the latch is provided on the pipe body, and slots cooperating with the latch are provided on the second flange and the third flange; the thickness of the outer end of the slot is smaller than the thickness of the inner end of the slot, and the thickness of the outer end of the latch is smaller than the thickness of the inner end of the slot, and the pins with different thicknesses at both ends can prevent the pipe body from separating from the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the filtering and detecting pipeline assembly of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure inside the filtering and detecting pipeline assembly of the present invention;

[0026] Figure 4 is a cross-sectional view of the filter detection pipeline assembly of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the connection between the connection assembly of the present invention and the pipeline body;

[0028] Figure 6 The present invention Figure 5 The main view of

[0029] Figure 7 is a schematic diagram of the structure of the connection assembly of the present invention;

[0030] Figure 8 It is a cross-sectional view of the connection assembly of the present invention.

[0031] In the figure: 1. pipeline body; 2. filter detection pipeline assembly; 3. connection assembly; 21. filter pipeline; 22. outer sleeve; 23. first external joint; 24. second external joint; 25. sealing head; 26. first connecting flange; 27. limiting protrusion; 28. coarse filter hole; 29. ​​fine filter hole; 31. second flange; 32. third flange; 33. latch; 34. slot; 35. plug. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0033] See also Figure 1-8 In the embodiment of the present invention, a PVC drainage pipe and its preparation method are made of the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride. Monoglyceride can well act as an internal lubricant and plasticizer in the formula components of PVC drainage pipes; monoglyceride materials can improve the fluidity of PVC materials in production, reduce friction, and make processing smoother; in the PVC drainage formula components, monoglyceride can also play a certain plasticizing role, improve the stability of the PVC formula in production, and prevent other materials from changing in performance during processing. In addition, monoglyceride materials can also play a certain role in increasing the brightness of PVC drainage pipes and improving product quality.

[0034] The invention is prepared from the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 4 parts of calcium-zinc composite stabilizer, 0.2 parts of external lubricant, 0.3 parts of high melting point lubricant, 10 parts of calcium carbonate filler and 1 part of monoglyceride.

[0035] The external lubricant is stearic acid or paraffin; the high melting point lubricant is polyethylene wax.

[0036] It also includes a pipeline body 1, a filtering and detecting pipeline component 2 and a connecting component 3. Adjacent pipeline bodies 1 are connected via the connecting component 3, and the filtering and detecting pipeline component 2 is installed at one end of one of the pipeline bodies 1.

[0037] The filtering detection pipeline assembly 2 includes a filtering pipeline 21, both ends of which are equipped with sealing heads 25, and a first connecting flange 26 is installed at the sealing head 25; three limiting protrusions 27 are arranged on the outside of the filtering pipeline 21, and an outer sleeve 22 is installed on the outside of the limiting protrusions 27 of the filtering pipeline 21, and the filtering pipeline 21 is respectively provided with coarse filtering holes 28 and fine filtering holes 29 between adjacent limiting protrusions 27, and the outer sleeve 22 is provided with a first external joint 23 at the coarse filtering holes 28, and the outer sleeve 22 is provided with a second external joint 24 at the fine filtering holes 29. Through the filtering holes of different coarseness, the first external joint 23 and the second external joint 24 extract different particles from the water in the water pipe, so that the situation of the particles can be roughly observed; the first external joint 23 and the second external joint 24 can also be used to pressurize the inside of the pipeline to achieve smooth flow of the pipeline.

[0038] The connecting assembly 3 includes a second flange 31 and a third flange 32, wherein the third flange 32 is provided with a plug 35 at one end of the second flange 31, at least two sealing rings are provided between the second flange 31 and the third flange 32, a latch 33 is provided at the connection between the second flange 31 and the pipeline body 1, a latch 33 is provided at the connection between the third flange 32 and the pipeline body 1, the pipeline body 1 is provided with a groove matched with the latch 33, and the second flange 31 and the third flange 32 are both provided with a slot 34 matched with the latch 33; the thickness of the outer end of the slot 34 is less than the thickness of the inner end of the slot 34, the thickness of the outer end of the latch 33 is less than the thickness of the inner end of the slot 34, and the pins with different thicknesses at both ends can prevent the pipeline body 1 from detaching from the flange.

[0039] A method for preparing a PVC drainage pipe comprises the following steps:

[0040] S1. Raw material preparation: prepare raw materials according to 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride;

[0041] S2, mixing: SG-5 type PVC resin powder, calcium zinc composite stabilizer, external lubricant, high melting point lubricant, calcium carbonate filler and monoglyceride are mixed using a high-speed mixer;

[0042] S3, extrusion molding: the mixed raw materials are fed into the extruder, and the PVC resin is melted by heating; the molten PVC is extruded through the die to form the required pipe shape; the hot pipe just extruded enters the cooling device to be quickly cooled and solidified;

[0043] S4, connection processing: assembling the obtained pipe parts into a PVC drainage pipe.

[0044] The working principle of the present invention is as follows: monoglyceride can well act as an internal lubricant, plasticizer, etc. in the formula components of PVC drainage pipes; the monoglyceride material can improve the fluidity of PVC materials during production, reduce friction, and make processing smoother; in the PVC drainage formula components, the monoglyceride can also play a certain plasticizing role, improve the stability of the PVC formula in production, and prevent other materials from experiencing performance changes during processing. In addition, the monoglyceride material can also play a certain role in increasing the brightness of the PVC drainage pipe, thereby improving product quality, etc.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PVC drainage pipe, characterized in that: The invention is prepared from the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium-zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride; The PVC drainage pipe comprises a pipe body (1), a filtering and detecting pipe assembly (2) and a connecting assembly (3); adjacent pipe bodies (1) are connected via the connecting assembly (3); and the filtering and detecting pipe assembly (2) is installed at one end of one of the pipe bodies (1); The filtering detection pipeline assembly (2) comprises a filtering pipeline (21), both ends of which are provided with sealing heads (25), and a first connecting flange (26) is provided at the sealing heads (25); three limiting protrusions (27) are provided on the outside of the filtering pipeline (21), an outer sleeve (22) is provided on the outside of the limiting protrusions (27) of the filtering pipeline (21), coarse filtering holes (28) and fine filtering holes (29) are respectively provided between adjacent limiting protrusions (27) of the filtering pipeline (21), a first external joint (23) is provided on the outer sleeve (22) at the coarse filtering holes (28), and a second external joint (24) is provided on the outer sleeve (22) at the fine filtering holes (29).

2. A PVC drainage pipe according to claim 1, characterized in that: The invention is prepared from the following raw materials in parts by weight: 100 parts of SG-5 type PVC resin powder, 4 parts of calcium-zinc composite stabilizer, 0.2 parts of external lubricant, 0.3 parts of high melting point lubricant, 10 parts of calcium carbonate filler and 1 part of monoglyceride.

3. A PVC drainage pipe according to claim 1, characterized in that: The external lubricant is stearic acid or paraffin; the high melting point lubricant is polyethylene wax.

4. A PVC drainage pipe according to claim 1, characterized in that: The connection assembly (3) comprises a second flange (31) and a third flange (32); the third flange (32) is provided with a plug (35) at one end of the second flange (31); at least two sealing rings are provided between the second flange (31) and the third flange (32); a latch (33) is provided at a connection between the second flange (31) and the pipeline body (1); a latch (33) is provided at a connection between the third flange (32) and the pipeline body (1); the pipeline body (1) is provided with a groove for cooperating with the latch (33); and the second flange (31) and the third flange (32) are both provided with a slot (34) for cooperating with the latch (33).

5. A PVC drainage pipe according to claim 4, characterized in that: The thickness of the outer end of the slot (34) is smaller than the thickness of the inner end of the slot (34), and the thickness of the outer end of the latch (33) is smaller than the thickness of the inner end of the slot (34).

6. A method for preparing a PVC drainage pipe, characterized in that: A PVC drainage pipe according to any one of claims 1 to 5, comprising the following steps: S1. Raw material preparation: prepare raw materials according to 100 parts of SG-5 type PVC resin powder, 2-4 parts of calcium zinc composite stabilizer, 0.2-0.5 parts of external lubricant, 0.3-0.8 parts of high melting point lubricant, 5-15 parts of calcium carbonate filler, and 0.2-1 parts of monoglyceride; S2, mixing: SG-5 type PVC resin powder, calcium zinc composite stabilizer, external lubricant, high melting point lubricant, calcium carbonate filler and monoglyceride are mixed using a high-speed mixer; S3, extrusion molding: the mixed raw materials are fed into the extruder, and the PVC resin is melted by heating; the molten PVC is extruded through the die to form the required pipe shape; the hot pipe just extruded enters the cooling device to be quickly cooled and solidified; S4, connection processing: assembling the obtained pipe parts into a PVC drainage pipe.

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