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CN116901565A - Preparation method of puncture-proof material, puncture-proof product and puncture-proof plate - Google Patents

Preparation method of puncture-proof material, puncture-proof product and puncture-proof plate Download PDF

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Publication number
CN116901565A
CN116901565A CN202310463355.3A CN202310463355A CN116901565A CN 116901565 A CN116901565 A CN 116901565A CN 202310463355 A CN202310463355 A CN 202310463355A CN 116901565 A CN116901565 A CN 116901565A
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China
Prior art keywords
puncture
fibers
finished product
semi
layer
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Pending
Application number
CN202310463355.3A
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Chinese (zh)
Inventor
吴莹旭
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Dongguan Dangling Industrial Co ltd
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Dongguan Dangling Industrial Co ltd
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Priority to PCT/CN2023/090943 priority Critical patent/WO2024221292A1/en
Priority to CN202310463355.3A priority patent/CN116901565A/en
Publication of CN116901565A publication Critical patent/CN116901565A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B2037/0092—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding in which absence of adhesives is explicitly presented as an advantage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B32B2262/156—Net structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The application provides a preparation method of a puncture-proof material and a puncture-proof product prepared by the method. The preparation method comprises the following steps: respectively weighing high-strength PE fibers and low-melting-point fibers, opening, and forming a net to form an intermediate layer, a first protective layer and a second protective layer; placing the middle layer between the first protective layer and the second protective layer, and carrying out entanglement and compounding on the non-woven needled fibers to obtain a semi-finished product; performing primary heat setting, shape cutting, secondary heat setting and cold pressing on the semi-finished product to obtain the puncture-proof material finished product. According to the application, the low-melting-point fiber is added into the high-strength PE fiber, and the low-melting-point fiber is melted and solidified by combining the two-time hot pressing and cold pressing processes, so that the connection strength between all layers of cloth can be enhanced without using glue, delamination is not easy, the weight of the puncture-proof material is effectively reduced, the flexibility of the puncture-proof material is improved, the air permeability is strong, and the wearing experience is improved.

Description

Preparation method of puncture-proof material, puncture-proof product and puncture-proof plate
Technical Field
The application belongs to the technical field of new materials, and particularly relates to a preparation method of a puncture-proof material prepared based on a needling method and a product prepared by the puncture-proof material.
Background
With the global economic integration process, the communication activities across industries are increasingly frequent, especially the terrorism and violence activities are increasingly rampant nowadays, and the army and police bulletproof equipment is required to be stable in all countries. The military police products are removed, and in daily life, people widely need labor protection products such as puncture-proof soles, cutting-proof gloves and the like with higher safety and comfort.
The common puncture-proof products in the market at present are divided into two types, one is to add rigid materials such as steel plates, corundum and the like into parts such as soles and the like which need puncture prevention for protection, but the rigid materials lack elasticity and are not comfortable enough to wear. The other is that high-performance chemical fibers such as aramid fibers are woven into cloth, and the cloth is matched with glue solution or impregnating solution to prepare a flexible puncture-proof product, but the product has poor temperature resistance and flexibility due to the application of the glue solution, and the wearing comfort is also affected. Therefore, there is a need for a puncture-resistant material that is lightweight, thin, flexible, and comfortable to wear.
In addition, in a protective article such as a helmet, the puncture preventing performance of the outer shell is also closely related to the protective performance thereof. The protector absorbs most impact force through the deformation of the shell, and the shell has the biggest effect of expanding the impact surface, especially when the shell impacts the outer surface with the protrusion, the puncture can be prevented, the contact area is also expanded, the pressure is directly reduced, and if the helmet shell is punctured, the head of a wearer is seriously injured, so that great life danger exists. Therefore, developing a puncture-proof sheet material which is suitable for a helmet protector, has certain hardness and is easy to mold is also a problem to be solved in the market.
Disclosure of Invention
In view of the above, the present application provides a method for preparing a puncture-proof material.
The technical scheme of the application is as follows:
a method for preparing a puncture-proof material, comprising the steps of:
s1, weighing high-strength PE fibers and low-melting-point fibers, opening, forming a net and forming an intermediate layer;
s2, weighing high-strength PE fibers and low-melting-point fibers, opening, carding, lapping, and intertwining and compounding through non-woven needled fibers to form a first protective layer and a second protective layer;
s3, placing the intermediate layer obtained in the step S1 between the first protective layer and the second protective layer obtained in the step S2, and carrying out entanglement compounding on the intermediate layer through non-woven needled fibers to obtain a semi-finished product;
s4, conveying the semi-finished product obtained in the step S3 into a baking oven, and performing primary heat setting;
s5, cutting the semi-finished product obtained in the step S4 into a shape according to the requirements of the puncture-proof product;
s6, conveying the semi-finished product with the cut shape obtained in the step S5 into a baking oven, and performing secondary heat setting;
s7, cold pressing the semi-finished product with the cut shape obtained in the step S6 to obtain a finished product.
Further, in the above preparation method, in step S1, the air-laying process or the needle-punching composite process after carding and lapping is adopted for the web forming and the intermediate layer forming.
Further, the above preparation method, wherein the air-laying speed is 8-10 kg/min.
Further, the preparation method comprises the following steps of:
D1. carding and lapping the opened high-strength PE fibers and low-melting-point fibers, and intertwining the fibers through non-woven needling to form base cloth with the gram weight of 150-200 g/layer;
D2. and stacking 10-12 layers of base cloth, and intertwining and compositing the base cloth by non-woven needled fibers to form the middle layer.
Further, according to the preparation method, the base fabric is composed of 90% of high-strength PE fibers and 10% of low-melting-point fibers, and the gram weight is 150-200 g/layer.
Further, the preparation method adopts a spiral needle for the non-woven needle punching fiber entanglement process, and the needle punching frequency is 700-1200/min.
Further, the preparation method comprises the step of forming the first protective layer and the second protective layer by 90% of high-strength PE fibers and 10% of low-melting-point fibers, wherein the gram weight is 200-250 g/layer.
Further, according to the preparation method, the thickness of the semi-finished product prepared in the step S3 is 4.0-4.5 mm.
Further, in the preparation method, in the steps S4 and S6, the oven is 10m long, the temperature is 120-140 ℃, and the running speed of the semi-finished product in the oven is 0.5 m/min.
Further, in the preparation method, in the step S7, the cold pressing temperature is normal temperature, the pressure is 200N, and the thickness of the prepared finished product is 2.3-2.5 mm.
Further, in the preparation method, the low-melting-point fiber is terylene and/or PP.
The application also provides a puncture-proof plate processed by the puncture-proof material prepared by the method, and the puncture-proof plate further comprises the step of epoxy resin treatment after cold pressing.
Further, the puncture-preventing plate, the epoxy resin treatment comprises the following steps:
B1. immersing the puncture-resistant material obtained after cold pressing in the step S7 into epoxy resin;
B2. b1, placing the puncture-proof material obtained in the step B1 into a mould, and vacuumizing and sucking pressure;
B3. and molding and curing the puncture-proof material in a mold to obtain the puncture-proof plate.
Further, in the puncture-proof plate, in the step B1, the epoxy resin is used in an amount of 50% of the weight of the puncture-proof material; in the step B3, the curing time is 2 hours, and the curing temperature is 80-100 ℃.
The beneficial effects of the application are as follows:
(1) According to the application, the low-melting-point fiber is added into the high-strength PE fiber, and the low-melting-point fiber is melted and solidified by combining the two-time hot pressing and cold pressing processes, so that the connection strength between all layers of cloth can be enhanced without using glue, delamination is not easy, the weight of the puncture-proof material is effectively reduced, the flexibility of the puncture-proof material is improved, the air permeability is strong, and the wearing experience is improved;
(2) The puncture-proof material prepared by the preparation method has puncture-proof strength of more than 1400N and better puncture-proof effect than European Union standard EN12568:2010 and American Standard ASTM F2413, the preparation method of the application adopts cloth with lower gram weight, thereby effectively saving cost while obtaining better puncture preventing effect.
Drawings
FIG. 1 is a state diagram of the safety shoe insole of example 1 laid flat;
FIG. 2 is a state diagram of the safety shoe insole prepared in example 1 when it is bent;
fig. 3 is a state diagram of the safety shoe insole prepared in example 1 when it is twisted.
Detailed Description
The experimental methods used in the following examples are all conventional methods unless otherwise specified; the reagents, materials and the like used in the following examples are commercially available or can be prepared by known methods unless otherwise specified.
Example 1
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point PP fibers, opening, carding and lapping, and adopting a spiral needle to perform needling frequency of 700/min to form a base fabric with a gram weight of 150 g/layer;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 700 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point PP fibers, opening, carding and lapping, and adopting a spiral needle to perform needling frequency of 700 per minute to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 700 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into the shape of an insole according to the safe shoe mold;
(7) Feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(8) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (7) at normal temperature under the pressure of 25mpa to obtain the safety shoe insole with the thickness of 2.3mm.
Example 2
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point polyester fibers, opening, and air-laying at a speed of 8 kg/min to form an intermediate layer with a gram weight of 1600 g/layer;
(2) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a first protective layer and a second protective layer with gram weights of 200 g/layer;
(3) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 1200 per minute to obtain a semi-finished product with the thickness of 4.5 mm;
(4) Feeding the semi-finished product obtained in the step (3) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(5) Cutting the semi-finished product obtained in the step (4) into insole shapes according to the fire-fighting shoe mold;
(6) Feeding the semi-finished product with the cut shape obtained in the step (5) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(7) And (3) cold-pressing the semi-finished product with the cut shape obtained in the step (6) at normal temperature under the pressure of 50mpa to obtain the fire-fighting shoe insole with the thickness of 2.5mm.
Example 3
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point PP fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1000/min to form a base fabric with a gram weight of 170 g/layer;
(2) Stacking 11 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling at the frequency of 1000 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point PP fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1000/min to form a first protective layer and a second protective layer with gram weights of 230 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling at the frequency of 1000 per minute to obtain a semi-finished product with the thickness of 4.3 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into the shape of an insole according to the armed police combat shoe mould;
(7) Feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(8) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (7) at normal temperature under the pressure of 30mpa to obtain the insole of the armed police combat shoe, wherein the thickness of the insole is 2.4mm.
Example 4
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point PP fibers, opening, carding and lapping, and adopting a spiral needle to perform needling frequency of 700/min to form a base fabric with a gram weight of 150 g/layer;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 700 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point polyester fibers, opening, carding and lapping, and adopting a spiral needle to perform needling frequency of 700 per minute to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 700 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into insole shapes according to the building shoe mold;
(7) Feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(8) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (7) at normal temperature under the pressure of 25mpa to obtain the building shoe insole with the thickness of 2.3mm.
Example 5
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 700/min to form a base fabric with a gram weight of 150 g/layer;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 700 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 700 per minute to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 700 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into the outer layer shape of the helmet according to a motorcycle helmet die;
(7) Feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(8) Cold pressing the semi-finished product with the cut shape obtained in the step (7) at normal temperature under the pressure of 25mpa;
(9) Immersing the cold-pressed semi-finished product obtained in the step (8) into 8.3kg of epoxy resin, putting the puncture-proof material into a helmet mold after the semi-finished product is completely soaked, vacuumizing and sucking pressure, heating to 80 ℃, maintaining for 2 hours for curing, and obtaining the puncture-proof motorcycle helmet outer layer material after the complete curing.
Example 6
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point polyester fibers, opening, and air-laying at a speed of 10 kg/min to form an intermediate layer with a gram weight of 1600 g/layer;
(2) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a first protective layer and a second protective layer with gram weights of 200 g/layer;
(3) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 1200 per minute to obtain a semi-finished product with the thickness of 4.5 mm;
(4) Feeding the semi-finished product obtained in the step (3) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(5) Cutting the semi-finished product obtained in the step (4) into the outer layer shape of the helmet according to the helmet mould of the construction site;
(6) Feeding the semi-finished product with the cut shape obtained in the step (5) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(7) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (6) at normal temperature under the pressure of 50mpa.
(8) Immersing the cold-pressed semi-finished product obtained in the step (7) into 8.3kg of epoxy resin, putting the puncture-proof material into a helmet die after the semi-finished product is completely soaked, vacuumizing and sucking pressure, heating to 100 ℃, maintaining for 2 hours for curing, and obtaining the puncture-proof construction site helmet outer layer material after the semi-finished product is completely cured.
Comparative example 1
(1) Weighing 10kg of high-strength PE fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 700 per minute to form a base fabric with the gram weight of 150 g/layer, wherein the base fabric does not contain low-melting-point fibers;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 700 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point PP fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 700 per minute to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 700 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into the shape of an insole according to the safe shoe mold;
(7) Feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(8) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (7) at normal temperature under the pressure of 25mpa to obtain the safety shoe insole with the thickness of 2.3mm.
Comparative example 2
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point polyester fibers, and opening and air-laying parameters to form an intermediate layer with the gram weight of 1600 g/layer;
(2) Weighing 6.6kg of high-strength PE fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a first protective layer and a second protective layer with gram weight of 250 g/layer, wherein the protective layer does not contain low-melting-point fibers;
(3) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 1200 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(4) Feeding the semi-finished product obtained in the step (3) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(5) Cutting the semi-finished product obtained in the step (4) into insole shapes according to the fire-fighting shoe mold;
(6) Feeding the semi-finished product with the cut shape obtained in the step (5) into a 10m long oven at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5m/min, and carrying out secondary heat setting;
(7) And (3) cold-pressing the semi-finished product with the cut shape obtained in the step (6) at normal temperature under the pressure of 50mpa to obtain the fire-fighting shoe insole with the thickness of 2.3mm.
Comparative example 3
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point PP fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a base fabric with a gram weight of 150 g/layer;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 1200 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point PP fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 1200 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, wherein the temperature is 120-140 ℃, and the running speed of the semi-finished product is 0.5m/min, and performing primary heat setting;
(6) Cutting the semi-finished product obtained in the step (5) into the shape of an insole according to the safe shoe mold;
(7) And (3) cold pressing the semi-finished product with the cut shape obtained in the step (6) at normal temperature under the pressure of 25mpa to obtain the safety shoe insole with the thickness of 2.3mm.
Comparative example 4
(1) Weighing 9kg of high-strength PE fibers and 1kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a base fabric with a gram weight of 150 g/layer;
(2) Stacking 10 base cloth layers, and forming an intermediate layer by adopting a spiral needle and needling frequency of 1200 per minute;
(3) Weighing 6kg of high-strength PE fibers and 0.6kg of low-melting-point polyester fibers, opening, carding, lapping, and adopting a spiral needle to perform needling frequency of 1200/min to form a first protective layer and a second protective layer with gram weights of 250 g/layer;
(4) Placing the middle layer between the first protective layer and the second protective layer, and adopting a spiral needle to perform needling frequency of 1200 per minute to obtain a semi-finished product with the thickness of 4.0 mm;
(5) Feeding the semi-finished product obtained in the step (4) into a 10m long oven, and performing primary heat setting at the temperature of 120-140 ℃ and the running speed of the semi-finished product of 0.5 m/min;
(6) Cutting the semi-finished product obtained in the step (5) into the shape of an insole according to the safe shoe mold;
(7) And (3) feeding the semi-finished product with the cut shape obtained in the step (6) into a 10m long oven, wherein the temperature is 120-140 ℃, the running speed of the semi-finished product is 0.5m/min, and performing secondary heat setting to obtain the safety shoe insole, and the thickness is 2.3mm.
Performance testing
(1) Weighing the puncture-preventing products prepared in each embodiment, and comparing the puncture-preventing products with similar products purchased in the market;
(2) Puncture force test: the insole products prepared in examples 1 to 4 and comparative examples 1 to 4 and the penetration strength of commercially available puncture-preventing insoles were tested according to CSA test standards;
the penetration resistance of the helmet shells and the commercially available motorcycle helmets prepared in examples 5 to 6 was tested according to the national standard GB 811-2010 test method.
The test methods and results are shown in tables 1 and 2 below.
Table 1 weight of puncture resistant insole product and puncture force
Table 2 weight and penetration resistance of penetration resistant helmet product
As shown in Table 1 above, the puncture-resistant insole products of each example and comparative example were lighter than commercially available puncture-resistant insoles because the materials of each layer were entangled by needle punching fibers during the preparation of each example and comparative example, and the materials of each layer were compounded by glue for the commercially available puncture-resistant insoles. In addition, the fiber is hardened by using the glue, and the prepared puncture-proof insole is hard and uncomfortable to wear.
In the puncture force test, the puncture force of the puncture-proof insoles prepared by the embodiments is greater than that of the puncture-proof insoles prepared by the comparative examples and the commercial puncture-proof insoles. The reason why the above phenomenon occurs in each comparative example is that: the low-melting-point fibers are melted in the hot pressing process, so that the composite strength between layers is further enhanced, and the low-melting-point fibers are absent in comparative examples 1 and 2, so that the penetration strength is reduced; comparative example 3 was subjected to hot pressing only once, and the melting of the low-melting fiber was insufficient; comparative example 4 lacks a cold pressing step and the low melting point fibers are insufficiently consolidated after melting, all resulting in a decrease in puncture strength.
As shown in table 2 above, in the case of the same penetration resistance, since glue was not used when the materials of the respective layers were compounded in the preparation process of examples 5 and 6, the weight of the prepared helmet shell was lighter than that of the commercially available motorcycle shell, the burden of the user when wearing was reduced, and the wearing comfort of the helmet was improved.
While embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (14)

1. A method for preparing a puncture-proof material, comprising the steps of:
s1, weighing high-strength PE fibers and low-melting-point fibers, opening, forming a net and forming an intermediate layer;
s2, weighing high-strength PE fibers and low-melting-point fibers, opening, carding, lapping, and intertwining and compounding through non-woven needled fibers to form a first protective layer and a second protective layer;
s3, placing the intermediate layer obtained in the step S1 between the first protective layer and the second protective layer obtained in the step S2, and carrying out entanglement compounding on the intermediate layer through non-woven needled fibers to obtain a semi-finished product;
s4, conveying the semi-finished product obtained in the step S3 into a baking oven, and performing primary heat setting;
s5, cutting the semi-finished product obtained in the step S4 into a shape according to the requirements of the puncture-proof product;
s6, conveying the semi-finished product with the cut shape obtained in the step S5 into a baking oven, and performing secondary heat setting;
s7, cold pressing the semi-finished product with the cut shape obtained in the step S6 to obtain a finished product.
2. The method according to claim 1, wherein in the step S1, the air-laying process or the needle-punching composite process after carding and lapping is used for forming the intermediate layer.
3. The method of claim 2, wherein the air-laying speed is 8-10 kg/min.
4. The method of making according to claim 2, wherein said post carding, lapping needle punching composite comprises the steps of:
A1. carding and lapping the opened high-strength PE fibers and low-melting-point fibers, and intertwining the fibers through non-woven needling to form base cloth with the gram weight of 150-200 g/layer;
A2. and stacking 10-12 layers of base cloth, and intertwining and compositing the base cloth by non-woven needled fibers to form the middle layer.
5. The method of claim 4, wherein the base fabric is composed of 90% high strength PE fibers and 10% low melting point fibers, with a grammage of 150-200 g/layer.
6. The method according to claim 1 or 4, wherein the nonwoven needle punched fiber entanglement process uses a spiral needle, and the needling frequency is 700 to 1200 per minute.
7. The method of claim 1, wherein the first and second protective layers consist of 90% high strength PE fibers and 10% low melting fibers, with a grammage of 200-250 g/layer.
8. The method according to claim 1, wherein the semi-finished product obtained in the step S3 has a thickness of 4.0-4.5 mm.
9. The method according to claim 1, wherein in the steps S4 and S6, the oven is 10m long and the temperature is 120-140 ℃, and the running speed of the semi-finished product in the oven is 0.5 m/min.
10. The method according to claim 1, wherein in the step S7, the cold pressing temperature is normal temperature, the pressure is 25-50 mpa, and the thickness of the finished product is 2.3-2.5 mm.
11. The method according to claim 5 or 7, wherein the low-melting fiber is dacron and/or PP.
12. A puncture-resistant sheet produced by the production method according to any one of claims 1 to 11, characterized in that the puncture-resistant sheet further comprises a step of epoxy resin treatment after cold pressing.
13. The puncture resistant plate of claim 12, wherein the epoxy treatment comprises the steps of:
B1. immersing the puncture-resistant material obtained after cold pressing in the step S7 into epoxy resin;
B2. b1, placing the puncture-proof material obtained in the step B1 into a mould, and vacuumizing and sucking pressure;
B3. and molding and curing the puncture-proof material in a mold to obtain the puncture-proof plate.
14. The puncture-resistant plate of claim 13, wherein in step B1, the epoxy resin is used in an amount of 50% by weight of the puncture-resistant material; in the step B3, the curing time is 2 hours, and the curing temperature is 80-100 ℃.
CN202310463355.3A 2023-04-26 2023-04-26 Preparation method of puncture-proof material, puncture-proof product and puncture-proof plate Pending CN116901565A (en)

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