阅读说明：本技术 保温隔热型皮芯复合单丝及其制备方法 (Heat-preservation and heat-insulation sheath-core composite monofilament and preparation method thereof ) 是由 蔡俊霖 于 2019-12-27 设计创作，主要内容包括：本发明公开了一种保温隔热型皮芯复合单丝及其制备方法,包括内层和外层,所述外层包覆于所述内层的外周,所述内层和外层的截面面积之比为8：(3～5),且所述外层的横截面轮廓呈圆形,所述皮芯复合单丝的细度为50～250D；内层原料：尼龙10T：90～98份、尼龙6：3～8份、热膨胀微球：5～8份、陶瓷空心微珠：3～5份、纳米碳酸钙：2～3.5份；外层原料：尼龙10T：4～8份、尼龙6：95～100份、含氟聚氨酯弹性体：5～9份、羧基化双壁碳纳米管：3～5份、石墨烯：2～3份、纳米二氧化硅：2～5份、马来酸酐接枝聚乙烯：4～6份。本发明的皮芯复合单丝,保温性能良好；且力学性能好,经久耐用。(The invention discloses a heat-insulating sheath-core composite monofilament and a preparation method thereof, wherein the sheath-core composite monofilament comprises an inner layer and an outer layer, the outer layer is coated on the periphery of the inner layer, and the ratio of the cross-sectional areas of the inner layer to the outer layer is 8: (3-5), the cross section of the outer layer is circular, and the fineness of the sheath-core composite monofilament is 50-250D; inner layer raw materials: nylon 10T: 90-98 parts of nylon 6: 3-8 parts of thermally-expanded microspheres: 5-8 parts of ceramic hollow microspheres: 3-5 parts of nano calcium carbonate: 2-3.5 parts; outer layer raw materials: nylon 10T: 4-8 parts of nylon 6: 95-100 parts of a fluorine-containing polyurethane elastomer: 5-9 parts of carboxylated double-walled carbon nanotube: 3-5 parts of graphene: 2-3 parts of nano silicon dioxide: 2-5 parts of maleic anhydride grafted polyethylene: 4-6 parts. The sheath-core composite monofilament has good heat preservation performance; and the mechanical property is good, and the durability is good.)

1. The utility model provides a heat preservation and insulation type skin-core composite monofilament which characterized in that, this skin-core composite monofilament include inlayer and skin, the skin cladding in the periphery of inlayer, the cross sectional area's of inlayer and skin ratio is 8: (3-5), the cross section of the outer layer is circular, and the fineness of the sheath-core composite monofilament is 50-250D;

the inner layer is composed of the following raw materials in parts by weight: nylon 10T: 90-98 parts of nylon 6: 3-8 parts of thermally-expanded microspheres: 5-8 parts of ceramic hollow microspheres: 3-5 parts of nano calcium carbonate: 2-3.5 parts;

the outer layer is composed of the following raw materials in parts by weight: nylon 10T: 4-8 parts of nylon 6: 95-100 parts of a fluorine-containing polyurethane elastomer: 5-9 parts of carboxylated double-walled carbon nanotube: 3-5 parts of graphene: 2-3 parts of nano silicon dioxide: 2-5 parts of maleic anhydride grafted polyethylene: 4-6 parts.

2. The sheath-core composite monofilament with heat preservation and insulation effects as claimed in claim 1, wherein the ratio of the cross-sectional areas of the inner layer and the outer layer is 8: 4.

3. the heat-insulating sheath-core composite monofilament as claimed in claim 1, wherein the inner layer comprises the following raw materials in parts by weight: nylon 10T: 95 parts of nylon 6: 5 parts of thermally-expanded microspheres: 6.5 parts of ceramic hollow microspheres: 4 parts of nano calcium carbonate: 2.8 parts.

4. The heat-insulating sheath-core composite monofilament as claimed in claim 1, wherein the outer layer comprises the following raw materials in parts by weight: nylon 10T: 6 parts of nylon 6: 97 parts of fluorine-containing polyurethane elastomer: 7 parts of carboxylated double-wall carbon nanotube: 4 parts of graphene: 2.5 parts of nano silicon dioxide: 3 parts of maleic anhydride grafted polyethylene: 5 parts of the raw materials.

5. The heat-insulating sheath-core composite monofilament as claimed in claim 1, wherein the thermally expandable microspheres are thermally expandable microspheres F-230D available from japan oleo pharmaceuticals.

6. The heat-insulating sheath-core composite monofilament as claimed in claim 1, wherein the ceramic cenospheres have a particle size of 15-20 um.

7. The skin-core composite monofilament with heat preservation and insulation effects as claimed in claim 1, wherein the length of the carboxylated double-walled carbon nanotube is 8-12 mm.

8. A method for preparing the heat-preservation and heat-insulation type skin-core composite monofilament as claimed in any one of claims 1 to 7, which comprises the following steps:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. and the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament.

Technical Field

The invention relates to the technical field of mesh cloth, in particular to a heat-preservation and heat-insulation type sheath-core composite monofilament and a preparation method thereof.

Background

Polyamide (PA) is commonly called nylon, is a general name of thermoplastic resin containing repeated amide groups on a molecular main chain, and has excellent mechanical property, frictional wear property, self-lubricating property, shock absorption, noise reduction and other properties, oil resistance, alkali resistance, weak acid resistance and common organic solvents. Polyamides include aliphatic polyamides, aromatic polyamides and aliphatic-aromatic polyamides, while aromatic polyamides include semi-aromatic polyamides and wholly aromatic polyamides. Among them, aliphatic polyamide has many varieties, large yield and most extensive application. Aliphatic polyamide has good surface due to low melting point and good fluidity, but has poor dimensional stability due to high water absorption, and the composite product has low modulus, so that the aliphatic polyamide is not suitable for shell materials. In recent years, the rise of semi-aromatic polyamides (such as PA6T, PA9T and PA10T) has increased more selectivity for polyamide applications.

Nylon is a term for polyamide fiber (nylon) and can be made into long fibers or short fibers. Nylon is a trade name for polyamide fiber, also known as Nylon (Nylon). The basic component of Polyamide (abbreviated as PA) is aliphatic Polyamide linked by amide bonds [ NHCO ] -.

A fabric with mesh openings, i.e. a mesh cloth; woven and knitted fabrics (currently also non-woven), wherein the woven fabric is white or yarn-dyed; the cloth has good air permeability, and after bleaching and dyeing, the cloth is cool and comfortable, and is particularly suitable for being used as articles such as curtains, mosquito nets and the like besides being used as summer clothes; the mesh sizes are consistent and used for printing, filtering and the like; the weaving method of the woven mesh cloth generally comprises three methods: one is to use two sets of warp yarns (ground warp and twisted warp) twisted with each other to form a shed, and interweaving with weft yarns (see leno weave); the skein is twisted on the left side of the ground warp by a special skein heald (also called half heald), twisted to the right side of the ground warp after one (or two or five) picks, and has stable structure due to mesh-shaped small holes formed by mutual twisting and weft yarn interweaving, so the skein is called as a leno; the other is that the jacquard weave or reeding method is changed, the warp yarn takes three as a group, penetrates into a reed dent, and can also weave a fabric with small holes on the cloth surface, but the mesh structure is unstable and easy to move, so the fabric is also called as a false leno; there is also a plain weave in which a square weave forms meshes (screen) by using a reed dent density and a weft density; the knitted mesh cloth is divided into two types, namely weft knitted mesh cloth and warp knitted mesh cloth, the raw materials are generally nylon, terylene, spandex and the like, and the finished products of the knitted mesh cloth are different in calling methods.

Nowadays, the application of the mesh is very wide, but the mesh used at present has the following problems:

1. although the air permeability is good, the waterproof effect is poor, the waterproof effect is not good, and the waterproof fabric cannot be used outdoors or in rainy days;

2. the heat preservation performance is very poor, the heat preservation effect is poor, and the application of the heat preservation material is limited;

3. the mechanical properties such as tearing strength, tensile strength and the like are poor, and the cable is easy to deform seriously or be damaged under the action of external force and is not durable;

4. the comprehensive use performance is poor.

Disclosure of Invention

Based on the above situation, the invention aims to provide a heat-insulating sheath-core composite monofilament and a preparation method thereof, which can effectively solve the above problems.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a heat preservation and insulation type skin-core composite monofilament, includes inlayer and skin, the skin cladding in the periphery of inlayer, the ratio of inlayer and skin cross sectional area is 8: (3-5), the cross section of the outer layer is circular, and the fineness of the sheath-core composite monofilament is 50-250D;

the inner layer is composed of the following raw materials in parts by weight: nylon 10T: 90-98 parts of nylon 6: 3-8 parts of thermally-expanded microspheres: 5-8 parts of ceramic hollow microspheres: 3-5 parts of nano calcium carbonate: 2-3.5 parts;

the outer layer is composed of the following raw materials in parts by weight: nylon 10T: 4-8 parts of nylon 6: 95-100 parts of a fluorine-containing polyurethane elastomer: 5-9 parts of carboxylated double-walled carbon nanotube: 3-5 parts of graphene: 2-3 parts of nano silicon dioxide: 2-5 parts of maleic anhydride grafted polyethylene: 4-6 parts.

Preferably, the ratio of the cross-sectional areas of the inner and outer layers is 8: 4.

preferably, the inner layer comprises the following raw materials in parts by weight: nylon 10T: 95 parts of nylon 6: 5 parts of thermally-expanded microspheres: 6.5 parts of ceramic hollow microspheres: 4 parts of nano calcium carbonate: 2.8 parts.

Preferably, the outer layer comprises the following raw materials in parts by weight: nylon 10T: 6 parts of nylon 6: 97 parts of fluorine-containing polyurethane elastomer: 7 parts of carboxylated double-wall carbon nanotube: 4 parts of graphene: 2.5 parts of nano silicon dioxide: 3 parts of maleic anhydride grafted polyethylene: 5 parts of the raw materials.

Preferably, the thermally expandable microspheres are thermally expandable microspheres F-230D from Nippon oil and fat pharmaceuticals.

Preferably, the particle size of the ceramic hollow microsphere is 15-20 um.

Preferably, the length of the carboxylated double-wall carbon nanotube is 8-12 mm.

The invention also provides a preparation method of the heat-preservation and heat-insulation sheath-core composite monofilament, which is characterized by comprising the following steps of:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. and the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the waterproof mesh fabric is formed by selecting raw materials and optimizing the content of each raw material, and is woven by adopting special sheath-core composite monofilaments; the sheath-core composite monofilament comprises an inner layer and an outer layer; the raw materials in the inner layer and the outer layer (and between the layers) have good compatibility, so that the advantages of the raw materials are fully exerted, the raw materials complement and promote each other, the prepared waterproof mesh cloth has good waterproof performance, good air permeability can be provided, a good waterproof effect can be achieved, and the mesh cloth is not easy to soak and enter water outdoors or in rainy days; the waterproof mesh cloth has good heat insulation performance, can provide good air permeability and has good warm-keeping effect; the tearing strength (in the warp direction) is high, the tensile strength (in the warp direction) is high, the mechanical property is good, and the durability is realized; the performance indexes are excellent, the comprehensive use performance is good, and the market application prospect is wide.

The inner layer adopts nylon 10T as a main raw material, a small amount of nylon 6 is added, the rigidity is good, the dimensional stability is good, the thermal expansion microspheres and the ceramic hollow microspheres are added in a proper proportion, the thermal barrier effect is greatly improved, and the good heat insulation performance of the prepared waterproof mesh cloth is ensured; the thermal expansion microspheres expand when heated in the preparation process of the sheath-core composite monofilament, the volume of the thermal expansion microspheres is reduced after molding and cooling, and the matrix material has good rigidity and dimensional stability, so that a vacuum thermal insulation gap is formed in the inner layer, and the thermal insulation effect is greatly improved; the ceramic hollow microspheres are added as heat insulation filler, so that the heat insulation effect is further improved; most importantly, the nano calcium carbonate, the thermal expansion microspheres and the ceramic hollow microspheres in a proper proportion have alternate sizes and are matched with each other to play a good synergistic dispersion role, so that a good dispersion effect is ensured, the strength of the inner layer is improved, and good thermal insulation performance is ensured;

in the invention, a small amount of nylon 10T is added to the outer layer, nylon 6 is used as a matrix material, the strength and flexibility are ensured, and a proper amount of fluorine-containing polyurethane elastomer is added, so that the compatibility with other raw materials is good, the waterproof performance is greatly improved, and the elasticity and the flexibility are increased; the proper amount of the carboxylated double-wall carbon nano tube is added, so that the carboxylated double-wall carbon nano tube has good compatibility with other raw materials, has good heat insulation effect and can improve the heat insulation performance; the graphene is added with a proper amount, so that the nano-composite material can emit radiation of far infrared rays in a micron wave band (the anti-abrasion performance can be improved, the wear resistance is improved, the strength is further improved), and the heat preservation performance is further improved; proper amount of nano silicon dioxide is added to further improve the mechanical properties such as tearing strength, tensile strength and the like; proper amount of maleic anhydride grafted polyethylene is added as a compatilizer, so that the raw materials of the outer layer of the invention can be well and uniformly dispersed, thereby ensuring the performance of the product;

the waterproof mesh fabric has the following mesh areas: (2-4) mmx (2-4) mm; the gram weight is: 100 to 140g/m²Can ensure good heat insulation performance, save production cost and ensure good air permeability.

The three-proofing finishing agent is OLEOPHOBOOL 7713 of DuPont, USA; the waterproof mesh cloth prepared by the three-proofing finishing agent has better waterproof effect and also has good oil-proof and antifouling effects.

The preparation method has simple process and simple and convenient operation, and saves manpower and equipment cost.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.

The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.

Example 1:

the waterproof mesh cloth is prepared by weaving sheath-core composite monofilaments and finishing by adopting a three-proofing finishing agent;

the sheath-core composite monofilament comprises an inner layer and an outer layer, wherein the outer layer is coated on the periphery of the inner layer, and the cross section of the outer layer is circular;

the ratio of the cross-sectional areas of the inner layer and the outer layer is 8: (3-5);

the inner layer comprises the following raw materials in parts by weight:

nylon 10T: 90-98 parts of nylon 6: 3-8 parts of thermally-expanded microspheres: 5-8 parts of ceramic hollow microspheres: 3-5 parts of nano calcium carbonate: 2-3.5 parts;

the outer layer comprises the following raw materials in parts by weight:

nylon 10T: 4-8 parts of nylon 6: 95-100 parts of a fluorine-containing polyurethane elastomer: 5-9 parts of carboxylated double-walled carbon nanotube: 3-5 parts of graphene: 2-3 parts of nano silicon dioxide: 2-5 parts of maleic anhydride grafted polyethylene: 4-6 parts;

the mesh area of the waterproof mesh cloth is as follows: (2-4) mmx (2-4) mm; the gram weight is: 100 to 140g/m²。

In the embodiment, the fineness of the sheath-core composite monofilament is 50-250D.

In this embodiment, the ratio of the cross-sectional areas of the inner and outer layers is preferably, but not limited to, 8: 4;

in this embodiment, the inner layer preferably, but not limited to, comprises the following raw materials in parts by weight:

nylon 10T: 95 parts of nylon 6: 5 parts of thermally-expanded microspheres: 6.5 parts of ceramic hollow microspheres: 4 parts of nano calcium carbonate: 2.8 parts;

in this embodiment, the outer layer preferably, but not limited to, comprises the following raw materials in parts by weight:

nylon 10T: 6 parts of nylon 6: 97 parts of fluorine-containing polyurethane elastomer: 7 parts of carboxylated double-wall carbon nanotube: 4 parts of graphene: 2.5 parts of nano silicon dioxide: 3 parts of maleic anhydride grafted polyethylene: 5 parts of the raw materials.

In this example, the thermally expandable microspheres were thermally expandable microspheres F-230D from Nippon oil and fat pharmaceutical Co.

In the embodiment, the particle size of the ceramic cenosphere is 15-20 um.

In the embodiment, the length of the carboxylated double-wall carbon nanotube is 8-12 mm.

In this example, the three-proofing finish was olyfluorophenopol 7713, a dupont company, usa.

The embodiment also provides a preparation method of the waterproof mesh cloth, which comprises the following steps:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament;

E. the sheath-core composite monofilament is subjected to a weaving process to prepare a primary product of the waterproof mesh cloth;

F. and finishing the primary waterproof mesh fabric by adopting a three-proofing finishing agent to obtain the waterproof mesh fabric.

Example 2:

the waterproof mesh cloth is prepared by weaving sheath-core composite monofilaments and finishing by adopting a three-proofing finishing agent;

the sheath-core composite monofilament comprises an inner layer and an outer layer, wherein the outer layer is coated on the periphery of the inner layer, and the cross section of the outer layer is circular;

the ratio of the cross-sectional areas of the inner layer and the outer layer is 8: 3;

the inner layer comprises the following raw materials in parts by weight:

nylon 10T: 90 parts of nylon 6: 3 parts of thermally expandable microspheres: 5 parts of ceramic hollow microspheres: 3 parts of nano calcium carbonate: 2 parts of (1);

the outer layer comprises the following raw materials in parts by weight:

nylon 10T: 4 parts and nylon 6: 95 parts of fluorine-containing polyurethane elastomer: 5 parts of carboxylated double-wall carbon nanotube: 3 parts of graphene: 2 parts of nano silicon dioxide: 2 parts of maleic anhydride grafted polyethylene: 4 parts of a mixture;

the mesh area of the waterproof mesh cloth is as follows: 3mm × 3 mm; the gram weight is: 120g/m²。

In this embodiment, the fineness of the sheath-core composite monofilament is 4 d.

In this example, the thermally expandable microspheres were thermally expandable microspheres F-230D from Nippon oil and fat pharmaceutical Co.

In the embodiment, the particle size of the ceramic cenosphere is 15-20 um.

In the embodiment, the length of the carboxylated double-wall carbon nanotube is 8-12 mm.

In this example, the three-proofing finish was olyfluorophenopol 7713, a dupont company, usa.

In this embodiment, the method for preparing the waterproof mesh cloth includes the following steps:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament;

E. the sheath-core composite monofilament is subjected to a weaving process to prepare a primary product of the waterproof mesh cloth;

F. and finishing the primary waterproof mesh fabric by adopting a three-proofing finishing agent to obtain the waterproof mesh fabric.

Example 3:

the waterproof mesh cloth is prepared by weaving sheath-core composite monofilaments and finishing by adopting a three-proofing finishing agent;

the sheath-core composite monofilament comprises an inner layer and an outer layer, wherein the outer layer is coated on the periphery of the inner layer, and the cross section of the outer layer is circular;

the ratio of the cross-sectional areas of the inner layer and the outer layer is 8: 5;

the inner layer comprises the following raw materials in parts by weight:

nylon 10T: 98 parts of nylon 6: 8 parts of thermally expandable microspheres: 8 parts of ceramic hollow microspheres: 5 parts of nano calcium carbonate: 3.5 parts;

the outer layer comprises the following raw materials in parts by weight:

nylon 10T: 8 parts of nylon 6: 100 parts of fluorine-containing polyurethane elastomer: 9 parts of carboxylated double-wall carbon nanotube: 5 parts of graphene: 3 parts of nano silicon dioxide: 5 parts of maleic anhydride grafted polyethylene: 6 parts of (1);

the mesh area of the waterproof mesh cloth is as follows: 3mm × 3 mm; the gram weight is: 120g/m²。

In this embodiment, the fineness of the sheath-core composite monofilament is 150D.

In this example, the thermally expandable microspheres were thermally expandable microspheres F-230D from Nippon oil and fat pharmaceutical Co.

In the embodiment, the particle size of the ceramic cenosphere is 15-20 um.

In the embodiment, the length of the carboxylated double-wall carbon nanotube is 8-12 mm.

In this example, the three-proofing finish was olyfluorophenopol 7713, a dupont company, usa.

In this embodiment, the method for preparing the waterproof mesh cloth includes the following steps:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament;

E. the sheath-core composite monofilament is subjected to a weaving process to prepare a primary product of the waterproof mesh cloth;

F. and finishing the primary waterproof mesh fabric by adopting a three-proofing finishing agent to obtain the waterproof mesh fabric.

Example 4:

the waterproof mesh cloth is prepared by weaving sheath-core composite monofilaments and finishing by adopting a three-proofing finishing agent;

the sheath-core composite monofilament comprises an inner layer and an outer layer, wherein the outer layer is coated on the periphery of the inner layer, and the cross section of the outer layer is circular;

the mesh area of the waterproof mesh cloth is as follows: 3mm × 3 mm; the gram weight is: 120g/m²。

In this embodiment, the fineness of the sheath-core composite monofilament is 150D.

In this embodiment, the ratio of the cross-sectional areas of the inner and outer layers is 8: 4;

in this embodiment, the inner layer includes the following raw materials in parts by weight:

nylon 10T: 95 parts of nylon 6: 5 parts of thermally-expanded microspheres: 6.5 parts of ceramic hollow microspheres: 4 parts of nano calcium carbonate: 2.8 parts;

in this embodiment, the outer layer includes the following raw materials in parts by weight:

nylon 10T: 6 parts of nylon 6: 97 parts of fluorine-containing polyurethane elastomer: 7 parts of carboxylated double-wall carbon nanotube: 4 parts of graphene: 2.5 parts of nano silicon dioxide: 3 parts of maleic anhydride grafted polyethylene: 5 parts of the raw materials.

In this example, the thermally expandable microspheres were thermally expandable microspheres F-230D from Nippon oil and fat pharmaceutical Co.

In the embodiment, the particle size of the ceramic cenosphere is 15-20 um.

In the embodiment, the length of the carboxylated double-wall carbon nanotube is 8-12 mm.

In this example, the three-proofing finish was olyfluorophenopol 7713, a dupont company, usa.

In this embodiment, the method for preparing the waterproof mesh cloth includes the following steps:

A. weighing the raw materials of the inner layer and the outer layer of the sheath-core composite monofilament respectively according to the weight parts, drying, and then uniformly mixing the raw materials of the inner layer and the outer layer respectively for later use;

B. feeding the mixed inner layer raw materials into a double-screw extruder to be melted into an inner layer mixed melt;

C. feeding the mixed outer layer raw materials into another double-screw extruder to be melted into an outer layer mixed melt;

D. the inner layer mixed melt and the outer layer mixed melt enter a composite spinning machine, are sprayed out from a composite spinneret plate after being subjected to melt distribution to form a strand silk with an inner layer structure and an outer layer structure, and are subjected to air blowing cooling, oiling, stretching and winding to obtain the sheath-core composite monofilament;

E. the sheath-core composite monofilament is subjected to a weaving process to prepare a primary product of the waterproof mesh cloth;

F. and finishing the primary waterproof mesh fabric by adopting a three-proofing finishing agent to obtain the waterproof mesh fabric.

Comparative example:

chinese patent publication No. CN 104846637B.

The following waterproof mesh fabrics obtained in examples 2 to 4 of the present invention and comparative example (gram weight 120 g/m)²) The performance test was performed, and the test results are shown in table 1:

thermal insulation performance: temperature drop (DEG C), test sample (this)Water-proof mesh fabrics obtained in invention examples 2 to 4 and comparative example (gram weight 120 g/m)²) 1kg of hot water (65 ℃, sealed and contained by adopting a glass bottle with the same specification) is wrapped in a single layer and placed in the same room, the temperature of the hot water is 20 ℃ in the room, and after half an hour, the absolute value is obtained by subtracting the temperature of the hot water from the temperature of 65 ℃ (initial temperature), namely the temperature drop.

TABLE 1

As can be seen from the above table, compared with the comparative example, the waterproof mesh fabric of the present invention has the following advantages: the waterproof performance is good, but the comparative example is not waterproof; the heat preservation performance is obviously better, and the heat preservation performance is good; the tearing strength (in the warp direction) and the tensile strength (in the warp direction) are also obviously superior to those of a comparative example, the mechanical property is good, and the durability is good.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.