WO2020155770A1

WO2020155770A1 - High-strength pe plastic protective net

Info

Publication number: WO2020155770A1
Application number: PCT/CN2019/118367
Authority: WO
Inventors: 吴海舰; 林荣剑; 金元群
Original assignee: 浙江省三门县东海橡胶厂
Priority date: 2019-01-31
Filing date: 2019-11-14
Publication date: 2020-08-06
Also published as: CN109798022B; CN109798022A; CN111622597A

Abstract

The present invention relates to a high-strength PE plastic protective net and a protective net roll cover, the plastic protective cover comprising a mesh-like plastic body formed of warp strips and weft strips, and a skeleton disposed inside the mesh-like plastic body; correspondingly, the skeleton is formed by mutually perpendicular interleaving of a warp and weft; the structure of the warp and weft is the same, the warp being made by spirally twisting a soft metal wire and a polyethylene yarn; the wire diameter of the soft metal wire is 0.2-0.3 mm and the wire diameter of the polyethylene yarn is 0.1-0.2 mm; the mesh-like plastic body is PE material; the mesh-like plastic body and the skeleton are integrally formed by means of injection moulding; and the thickness of the mesh-like plastic body is 0.8-1.2 mm. Provided in the present invention is a high-strength PE plastic protective net suitable for multiple scenarios, being light weight and high strength, and having the advantages of convenient use and long service life.

Description

High-strength PE plastic protective net

Technical field

The invention relates to a PE protective net, in particular to a high-strength PE plastic protective net.

Background technique

Enter the background technology description paragraph here. With the development of society and economy, people's life is getting faster and faster, and some facilities are often needed in life to ensure the convenience and safety of people's lives, and there is a need for planning and isolation of related areas More and more, protective nets came into being.

The role of the protective net in home life is to isolate the railings and window sills to protect the young children and objects in the family; in the breeding occasions, the protective net serves to divide and restrict animals in private territories such as lawns and pastures. The role of the scope of activity; the protective net will bear the responsibility of intercepting soil and rock and covering protection in the slope; the countless related applications have made people love the protective net more and more.

The protective nets used in homes or breeding occasions mostly use fiber fabric cords or rubber-plastic material nets. As protective nets, they have the advantages of light weight, low price, and simple installation, but their durability and impact resistance need to be improved; The protective nets installed on slopes, factories, etc. mostly use metal protective nets with high strength and good impact resistance, but they also have the disadvantages of being easily corroded and inconvenient to recycle; therefore, how to improve the existing protective nets Performance has become a difficult problem facing the current field of protective nets.

technical problem

The invention provides a high-strength PE plastic protective net suitable for use in multiple occasions, which has the characteristics of light weight and high strength, and also has the advantages of convenient use and long service life.

Technical solutions

The technical solution of the present invention to solve its technical problem is: high-strength PE plastic protective net, including a grid-shaped plastic body formed by warp and weft bars, and a skeleton arranged in the grid-shaped plastic body; correspondingly, the skeleton It is formed by the warp and weft interlacing perpendicular to each other; the warp and the weft have the same structure, and the warp is spirally twisted by a soft metal wire and a polyethylene yarn; the soft metal wire The wire diameter is 0.2-0.3mm; the wire diameter of the polyethylene yarn is 0.1-0.2mm; the mesh plastic body is made of PE material; the mesh plastic body and the skeleton are integrally formed by injection molding; The thickness of the mesh-like plastic body is 0.8 to 1.2 mm.

Beneficial effect

The high-strength PE plastic protective net of the present invention has the following remarkable progress:

1) The combination of the skeleton of the mixed soft metal wire and polyethylene yarn and the mesh plastic body of PE material is firm and stable, and synergistically interacts with each other. It has high strength, good corrosion resistance and long service life;

2) When the high-strength PE plastic protective net of the present invention is used, it can be fixed on a specific occasion by its own mesh, rope or tie. It is very convenient to use, has good adaptability to the terrain, and has the advantages of convenient recycling.

As an optimization of the aforementioned high-strength PE plastic protective net, the soft metal wire is austenitic stainless steel wire. The austenitic stainless steel wire can bear various loads and variable loads, and has the effect of increasing the tensile strength and impact toughness of the plastic mesh of the present invention.

As an optimization of the aforementioned high-strength PE plastic protective net, the raw material components of the mesh-shaped plastic body include in parts by weight:

The inventor found out that when the raw material of the grid-like plastic body adopts the above formula, it has the characteristics of good oxidation resistance and not easy to crack; the specific additives have the advantages of green and environmental protection, and also give the high-strength PE plastic protection of the present invention The good weather resistance of the net allows it to have a long service life in the environment of wind and rain.

As a further optimization, the raw material component of the grid-shaped plastic body also includes 2-amino-2-methyl-1-propanol, in an amount of 0.2-0.6 parts. The combination of 2-amino-2-methyl-1-propanol and permanent red 2BL makes the high-strength PE plastic protective net of the present invention have high color saturation and high brightness, which can make it easier to be identified , Thereby increasing the safety during use.

As a further optimization, the raw material component of the grid-shaped plastic body also includes ethylhexyl palmitate in an amount of 0.1-0.2 parts. Ethylhexyl palmitate can further increase the flexibility of the high-strength PE plastic protective net of the present invention, and increase its convenience in use, installation and recycling.

As a further optimization, the powder particle size of the calcium carbonate is 0.15 μm. The calcium carbonate powder of this particle size has high mixing uniformity in the grid-like plastic body, which plays a role in improving the notched impact strength.

As a further optimization, the steps of the method for preparing the plastic matrix masterbatch of the grid-shaped plastic body are as follows:

a. Weigh each component according to the ratio; add HDPE, LDPE, ethylene propylene rubber, crosslinking agent DCP, crosslinking DNP, plasticizer PCL-509, HDPE-g-MAH into the temperature-controlled high-mixer, and stir and mix, The stirring speed is 600-650 revolutions per minute; pre-mix for 5-8 minutes at a temperature of 120°C-140°C to obtain premix A;

b. Add calcium carbonate, antioxidant 1076, UV-437, light stabilizer 1084, permanent red 2BL, 2-amino-2-methyl-1-propanol, and ethylhexyl palmitate into the temperature-controlled high-temperature mixer After mixing the medium with premix A, stir at a stirring speed of 450-500 revolutions per minute; premix for 8-10 min at 160℃～180℃ to obtain premix B;

c. The premix B is extruded and pelletized through a twin-screw extruder at a temperature of 175 to 195° C. to obtain a plastic matrix master batch of the grid-shaped plastic body.

Under the process conditions of the manufacturing method, the mixing of additives and materials is uniform and the degree of combination is high, so that the liquid-gas system energy is reduced, and the mesh-like plastic body prepared by the masterbatch subsequently is firmly combined with the skeleton and is not easy to rise. Bubbles greatly increase the service life of the plastic net of the present invention. The method of the invention is easy to operate, has good economic benefits, is suitable for large-scale production, and is beneficial to industrial promotion.

As an optimization of the aforementioned high-strength PE plastic protective net, the wire diameter of the soft metal wire is 0.25mm; the wire diameter of the polyethylene yarn is 0.15mm; the thickness of the mesh-like plastic body is 1.0 mm.

As an optimization of the aforementioned high-strength PE plastic protective net, the mesh of the mesh-like plastic body is square with an area of 60-120mm2; the width of the warp bars is 1 to 2mm; the width of the weft bars and warp bars the same. While ensuring the strength, it reduces the use of raw materials and reduces production costs.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the high-strength PE plastic protective net of the present invention;

2 is a schematic diagram of the structure of the skeleton of the high-strength PE plastic protective net of the present invention;

Figure 3 is a schematic diagram of the warp in the present invention.

The best mode of the invention

Example 1: Referring to Figures 1 to 3, the high-strength PE plastic protective net of the present invention includes a grid-shaped plastic body 2 formed by warp bars 21 and weft bars 22, and a grid-shaped plastic body 2 Frame 1; Correspondingly, the frame 1 is formed by weaving the warp threads 11 and the weft threads 12 perpendicular to each other; the warp threads 11 and the weft threads 12 have the same structure, and the warp threads 11 consist of a soft metal wire 111 and a polyethylene yarn The thread 112 is twisted in a spiral shape; the wire diameter of the soft metal wire 111 is 0.25 mm; the wire diameter of the polyethylene yarn 112 is 0.15 mm; the soft metal wire 111 is an austenitic stainless steel Silk; the mesh plastic body 2 is made of PE; the raw material components of the mesh plastic body include by weight: 65 parts of HDPE, 25 parts of LDPE, 7 parts of ethylene propylene rubber, and crosslinking agent DCP 1.5 Parts, crosslinking agent DNP 0.3 parts, plasticizer PCL-509 9 parts, HDPE-g-MAH 0.7 parts, calcium carbonate 3.5 parts, antioxidant 1076 0.35 parts, UV-437 0.35 parts, light stabilizer 1084 0.4 Parts, 10 parts of Permanent Red 2BL, 0.4 parts of 2-amino-2-methyl-1-propanol, and 0.15 parts of ethylhexyl palmitate; the particle size of the calcium carbonate powder is 0.15 μm; the grid shape The plastic body 2 and the skeleton 1 are integrally formed by injection molding; the thickness of the mesh-like plastic body 2 is 1.0 mm; the mesh 23 of the mesh-like plastic body 2 is square, and the area of the mesh 23 is 90 mm ² ; The width of the warp strip 21 is 1.5 mm; the width of the weft strip 22 and the warp strip 21 are the same.

Embodiments of the invention

Example 2: Different from Example 1, in this example, the raw material components of the grid-shaped plastic body: 60 parts of HDPE, 20 parts of LDPE, 5 parts of ethylene propylene rubber, 1 part of crosslinking agent DCP, Co-crosslinking agent DNP 0.25 parts, plasticizer PCL-509 8 parts, HDPE-g-MAH 0.5 parts, calcium carbonate 3 parts, antioxidant 1076 0.25 parts, UV-437 0.25 parts, light stabilizer 1084 0.3 parts, 8 parts of permanent red 2BL, 0.2 part of 2-amino-2-methyl-1-propanol, 0.1 part of ethylhexyl palmitate; the diameter of the soft metal wire 111 is 0.2mm; the polyethylene yarn The wire diameter of the thread 112 is 0.1mm; the thickness of the grid-like plastic body 2 is 0.8mm, the area of the mesh 23 is 60mm2; the width of the warp bars 21 is 1mm; the weft bars 22 and warp bars 21 the same width.

Example 3: Different from Example 1, in this example, the raw material components of the grid-like plastic body are: HDPE 70 parts, LDPE 30 parts, ethylene propylene rubber 10 parts, crosslinking agent DCP 2 parts, auxiliary Crosslinking agent DNP 0.5 parts, plasticizer PCL-509 10 parts, HDPE-g-MAH 0.8 parts, calcium carbonate 4 parts, antioxidant 1076 0.4 parts, UV-437 0.4 parts, light stabilizer 1084 0.5 parts, 12 parts of permanent red 2BL, 0.6 part of 2-amino-2-methyl-1-propanol, 0.2 part of ethylhexyl palmitate; the diameter of the soft metal wire 111 is 0.3mm; the polyethylene yarn The wire diameter of the thread 112 is 0.2mm; the thickness of the grid-like plastic body 2 is 1.2mm, the area of the mesh 23 is 120mm2; the width of the warp bars 21 is 2mm; the weft bars 22 and warp bars 21 the same width.

Example 4: Different from Example 1, in this example, the raw material components of the mesh plastic body are: 68 parts of HDPE, 22 parts of LDPE, 8 parts of ethylene-propylene rubber, and 1.8 parts of crosslinking agent DCP , Co-crosslinking agent DNP 0.4 parts, plasticizer PCL-509 8.5 parts, HDPE-g-MAH 0.7 parts, calcium carbonate 3.2 parts, antioxidant 1076 0.32 parts, UV-437 0.32 parts, light stabilizer 1084 0.32 parts , 11 parts of permanent red 2BL, 0.5 parts of 2-amino-2-methyl-1-propanol, 0.18 parts of ethylhexyl palmitate; the wire diameter of the soft metal wire 111 is 0.27mm; the polyethylene The diameter of the yarn 112 is 0.18mm; the thickness of the mesh-like plastic body 2 is 1.1mm; the area of the mesh 23 is 100mm2; the width of the warp bars 21 is 1.8mm; the weft bars 22 and The warp bars 21 have the same width. .

Industrial applicability

The steps of the method for preparing the plastic matrix masterbatch of the high-strength PE plastic protective net of the present invention can be as follows:

b. Add 3.5 parts of calcium carbonate, antioxidant 1076, UV-437, light stabilizer 1084, permanent red 2BL, 2-amino-2-methyl-1-propanol, and ethylhexyl palmitate to the controllable temperature After mixing with premix A in the mixer, stir at a stirring speed of 450 to 500 revolutions per minute; premix for 8 to 10 minutes at 160°C to 180°C to obtain premix B;

After the masterbatch is prepared, the high-strength PE plastic protective net of the present invention can be obtained by integral molding with the skeleton through a melt injection mold.

Example detection data

Claims

The high-strength PE plastic protective net is characterized in that it comprises a grid-shaped plastic body (2) formed by warp bars (21) and weft bars (22), and a skeleton (2) arranged in the grid-shaped plastic body (2) 1); Correspondingly, the skeleton (1) is formed by interlacing warp threads (11) and weft threads (12) perpendicular to each other; the warp threads (11) and the weft threads (12) have the same structure, and the warp threads (11) are formed by one A soft metal wire (111) and a polyethylene yarn (112) are twisted in a spiral shape; the wire diameter of the soft metal wire (111) is 0.2-0.3mm; the polyethylene yarn The wire diameter of (112) is 0.1～0.2mm; the mesh plastic body (2) is made of PE material; the mesh plastic body (2) and the skeleton (1) are integrally formed by injection molding; the mesh The thickness of the shaped plastic body (2) is 0.8 to 1.2 mm.
The high-strength PE plastic protective net according to claim 1, wherein the soft metal wire (111) is an austenitic stainless steel wire.
The high-strength PE plastic protective net according to claim 1, characterized in that the raw material components of the grid-shaped plastic body (2) comprise in parts by weight:
The high-strength PE plastic protective net according to claim 3, characterized in that: the raw material component of the mesh-shaped plastic body (2) further comprises 2-amino-2-methyl-1-propanol, and the amount is 0.2～0.6 copies
The high-strength PE plastic protective net according to claim 4, characterized in that: the raw material component of the grid-shaped plastic body (2) further comprises ethylhexyl palmitate, in an amount of 0.1-0.2 parts.
The high-strength PE plastic protective net according to claim 5, wherein the powder particle size of the calcium carbonate is 0.15 μm.
The high-strength PE plastic protective net according to claim 6, characterized in that: the preparation method of the plastic matrix masterbatch of the grid-shaped plastic body (2) is as follows:

a. Weigh the components according to the ratio; add HDPE, LDPE, ethylene-propylene rubber, crosslinking agent DCP, crosslinking DNP, plasticizer PCL-509, HDPE-g-MAH into the temperature-controllable high-mixer, and stir and mix, The stirring speed is 600-650 revolutions per minute; pre-mix for 5-8 minutes at a temperature of 120°C-140°C to obtain premix A;

b. Add calcium carbonate, antioxidant 1076, UV-437, light stabilizer 1084, permanent red 2BL, 2-amino-2-methyl-1-propanol, and ethylhexyl palmitate into the temperature-controlled high-temperature mixer After mixing the medium with premix A, stir at a stirring speed of 450-500 revolutions per minute; premix for 8-10 min at 160℃～180℃ to obtain premix B;

c. The premix B is extruded and pelletized by a twin-screw extruder at a temperature of 175 to 195° C. to obtain the plastic matrix master batch of the grid-shaped plastic body (2).
The high-strength PE plastic protective net according to claim 1, characterized in that: the diameter of the soft metal wire (111) is 0.25mm; the diameter of the polyethylene yarn (112) is 0.15mm; The thickness of the grid-shaped plastic body (2) is 1.0 mm.
The high-strength PE plastic protective net according to any one of claims 1 to 8, wherein the mesh (23) of the mesh-like plastic body (2) is square and has an area of 60-120 mm 2 ; The width of the warp bar (21) is 1 to 2 mm; the width of the weft bar (22) and the warp bar (21) are the same.

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