CN111959048A - Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof - Google Patents

Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof Download PDF

Info

Publication number
CN111959048A
CN111959048A CN202010876582.5A CN202010876582A CN111959048A CN 111959048 A CN111959048 A CN 111959048A CN 202010876582 A CN202010876582 A CN 202010876582A CN 111959048 A CN111959048 A CN 111959048A
Authority
CN
China
Prior art keywords
double
layer
halogen
new energy
energy automobile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010876582.5A
Other languages
Chinese (zh)
Inventor
鲁尔兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Pengyuan Electronic Materials Co ltd
Original Assignee
Dongguan Pengyuan Electronic Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Pengyuan Electronic Materials Co ltd filed Critical Dongguan Pengyuan Electronic Materials Co ltd
Priority to CN202010876582.5A priority Critical patent/CN111959048A/en
Publication of CN111959048A publication Critical patent/CN111959048A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • 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
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • B32B2307/736—Shrinkable

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Insulating Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

A double-layer heat shrinkable tube for insulation protection of a new energy automobile comprises two layers of materials, wherein the outer layer is a bright orange halogen-free flame-retardant polyester elastomer material, and the inner layer is a halogen-free high flame-retardant polyolefin material; the double-layer heat shrinkable tube has the function of shrinking when being heated. The double-layer heat shrinkable tube provided by the invention fully utilizes the advantages of good oil resistance, wear resistance, tear resistance, softness and deflection resistance of a polyester material and the advantages of good insulativity and environmental protection of a polyolefin material, and provides a technical scheme for preparing the double-layer heat shrinkable tube.

Description

Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof
Technical Field
The invention relates to a double-layer heat-shrinkable sleeve for insulation protection at the connection of a new energy automobile wire, a cable and a flexible busbar, which is bright orange in color.
Technical Field
The power of the new energy automobile mainly depends on a power system, and a wire cable and a current transmission busbar (particularly a flexible busbar) for providing power for the new energy automobile are important components for power transmission of the new energy automobile. The automobile industry standard QC/T1037-. The new standard provides new safety standards for cable materials, and provides clear and higher requirements for oil resistance, tear resistance, bending resistance, weather resistance, water resistance, acid and alkali resistance, wear resistance, rolling resistance, flexibility and flame retardancy.
Conventional heat shrinkable tubes, which are substantially single layer structures composed of one material, can provide certain functionality. The heat shrinkable sleeve for the insulation protection of the new energy automobile has excellent oil resistance, tear resistance, bending resistance, abrasion resistance, rolling resistance and flexibility in addition to excellent mechanical and insulation properties. This combination of demanding properties limits the ability of conventional single layer heat shrink tubing to be made from specialty materials such as thermoplastic fluoroelastomers. However, due to the special and expensive material, the popularization and the use of the heat shrinkable sleeve prepared from the material in the field of new energy automobiles are limited.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a technical scheme aiming at the condition of high requirement of a heat-shrinkable sleeve for a new energy automobile, and the prepared double-layer heat-shrinkable sleeve can meet the comprehensive requirement of insulation protection of the new energy automobile, has good cost performance, and is suitable for popularization and use in the field of the new energy automobile.
In order to solve the technical problems, the invention provides the following technical scheme: a double-layer heat-shrinkable sleeve for insulation protection of a new energy automobile comprises an inner layer and an outer layer, wherein the outer layer is made of a halogen-free flame-retardant polyester elastomer material, and the inner layer is made of a halogen-free high-flame-retardant polyolefin material.
The technical scheme is further limited in that the performance index of the halogen-free flame-retardant polyester elastomer material used for the outer layer of the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection meets the following requirements:
Figure BDA0002652420270000011
Figure BDA0002652420270000021
the technical scheme is further limited in that the performance indexes of the halogen-free high-flame-retardant polyolefin material used for the inner layer of the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection meet the following requirements:
test items Unit of Require that
Tensile strength MPa ≥10.4
Elongation at break ％ ≥200
Air box heat aging ℃×h 158×168
-tensile StrengthRate of change of degree ％ ≥70
Elongation at break Rate of change ％ ≥70
Cold bending － At-10 ℃ by
Low temperature impact embrittlement temperature ℃ -40
Volume resistivity at 20 DEG C Ω·cm 1.9×1014
Dielectric strength kV/mm ≥25
Oxygen index ％ ≥30
Flame retardant (UL94 standard) － V-0
Content of halogen acid gas mg/g ≤5
The technical scheme is further limited in that the halogen-free flame-retardant polyester elastomer material is bright orange.
In order to solve the technical problems, the invention also provides the following technical scheme: a manufacturing method of a double-layer heat-shrinkable sleeve for insulation protection of a new energy automobile comprises the following steps:
step 1: respectively carrying out composite co-extrusion by two plastic extruders: extruding the bright orange halogen-free flame-retardant polyester elastomer material by one plastic extruder, extruding the halogen-free high flame-retardant polyolefin material by the other plastic extruder, extruding the two materials to form a double-layer pipe with a concentric circle structure, wherein the outer layer is the bright orange halogen-free flame-retardant polyester elastomer material, the inner layer is the halogen-free high flame-retardant polyolefin material, and the thickness ratio of the inner layer material to the outer layer material is 1:9 to 5: 5;
step 2: irradiating the double-layer pipe obtained in the step 1 by high-energy electron rays with the dose of 12-18Mrad or gamma rays with the dose of 120-150 KGY;
and step 3: and (3) heating and softening the double-layer pipe obtained in the step (2), expanding by 2-3 times, and cooling and shaping to obtain the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection.
The invention has the following beneficial effects: the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile disclosed by the invention adopts a double-layer structure, optimizes the performance of the heat-shrinkable sleeve, strengthens the characteristics of oil resistance, wear resistance and the like on the premise of ensuring the flame retardance and the insulating property, has good cost performance, and can obviously improve the lasting safety of the connection part of a wire cable and a flexible busbar of the new energy automobile in operation.
Detailed Description
A double-layer heat-shrinkable sleeve for insulation protection of a new energy automobile comprises an inner layer and an outer layer, wherein the outer layer is a bright orange halogen-free flame-retardant polyester elastomer material, and the inner layer is a halogen-free high-flame-retardant polyolefin material.
The preparation method of the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile is briefly introduced as follows: forming the inner layer and the outer layer by a composite co-extrusion technology; respectively crosslinking two layers of materials by the radiation of high-energy rays; softening the two layers of materials by heating; under the action of stress, the two layers of materials generate large deformation; and then the deformation is kept through rapid cooling. The double-layer pipe prepared by the method has the function of shrinking when being heated, and can be used for insulation protection in the field of energy vehicles.
The performance index of the halogen-free flame-retardant polyester elastomer material used for the outer layer of the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile can meet the following requirements (because the new energy automobile has the warning requirement on the insulation protection, the material is prepared into bright orange):
Figure BDA0002652420270000031
Figure BDA0002652420270000041
the performance indexes of the halogen-free high-flame-retardant polyolefin material used for the inner layer of the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile meet the following requirements:
test items Unit of Require that
Tensile strength MPa ≥10.4
Elongation at break ％ ≥200
Air box heat aging ℃×h 158×168
Rate of change of tensile Strength ％ ≥70
Elongation at break Rate of change ％ ≥70
Cold bending － At-10 ℃ by
Low temperature impact embrittlement temperature ℃ -40
Volume resistivity at 20 DEG C Ω·cm 1.9×1014
Dielectric strength kV/mm ≥25
Oxygen index ％ ≥30
Flame retardant (UL94 standard) － V-0
Content of halogen acid gas mg/g ≤5
The manufacturing method of the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile comprises the following steps:
step 1: respectively carrying out composite co-extrusion by two plastic extruders: extruding the bright orange halogen-free flame-retardant polyester elastomer material by one plastic extruder, extruding the halogen-free high flame-retardant polyolefin material by the other plastic extruder, extruding the two materials to form a double-layer pipe with a concentric circle structure, wherein the outer layer is the bright orange halogen-free flame-retardant polyester elastomer material, the inner layer is the halogen-free high flame-retardant polyolefin material, and the thickness ratio of the inner layer material to the outer layer material is 1:9 to 5: 5;
step 2: irradiating the double-layer pipe obtained in the step 1 by high-energy electron rays with the dose of 12-18Mrad or gamma rays with the dose of 120-150 KGY;
and step 3: and (3) heating and softening the double-layer pipe obtained in the step (2), expanding by 2-3 times, and cooling and shaping to obtain the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection.
Taking a conductor with the sectional area equal to that of a bare copper wire conductor of a 2.5kV new energy automobile cable, shrinking the double-layer heat-shrinkable sleeve with the corresponding size on the outer layer of the 2.5kV new energy automobile cable, and detecting according to the requirement of QC/T1037-2016 high-voltage cable for road vehicles. The detection items and the detection results are as follows:
Figure BDA0002652420270000051
the double-layer heat-shrinkable tubing for the insulation protection of the new energy automobile disclosed by the invention is bright orange in color, adopts two materials to form a double-layer structure, optimizes the performance of the heat-shrinkable tubing, strengthens the characteristics of oil resistance, wear resistance and the like on the premise of not reducing the flame retardance and the insulating property of the heat-shrinkable tubing, and can obviously improve the lasting safety of the connection operation of the wire and cable and the flexible busbar of the new energy automobile. Meanwhile, according to the technical scheme provided by the invention, the polyester elastomer and the polyolefin material are matched for use, so that the advantages of oil resistance, wear resistance, tear resistance, softness and flexure resistance of the polyester material and the advantages of good insulativity and environmental friendliness of the polyolefin material are integrated, and the polyester elastomer and the polyolefin material are convenient to popularize and use in the market.

Claims (5)

1. The double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile is characterized by comprising an inner layer and an outer layer, wherein the outer layer is made of a halogen-free flame-retardant polyester elastomer material, and the inner layer is made of a halogen-free high-flame-retardant polyolefin material.
2. The double-layer heat-shrinkable sleeve for the new energy automobile insulation protection according to claim 1, wherein the performance index of the halogen-free flame-retardant polyester elastomer material used for the outer layer of the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection meets the following requirements:
test items Unit of Require that Tensile strength MPa ≥13.8 Elongation at break ％ ≥300 Thermal ageing ℃×h 158×168 Tensile Strength Retention ％ ≥70 Elongation at break Retention ％ ≥70 Mineral oil resistant (IRM902) ℃×h 50×20 -rate of change of outer diameter ％ ≤10 Fuel resistant oil (IRM903) ℃×h 23×20 -rate of change of outer diameter ％ ≤10 Resistant petrol (ISO1817 liquid C) ℃×h 23×20 -rate of change of outer diameter ％ ≤10 Ultraviolet ray proof － 720h Tensile Strength Retention ％ ≥70 Elongation at break Retention ％ ≥70 Volume resistivity at 20 DEG C Ω·cm ≥1.0×1013 Dielectric strength kV/mm 15 Oxygen index ％ ≥28 Flame retardant (UL94 standard) － V-0 Content of halogen acid gas mg/g ≤5 Colour(s) - Bright orange color
3. The double-layer heat-shrinkable tubing for new energy automobile insulation protection according to claim 1, wherein the performance index of the halogen-free high flame retardant polyolefin material used for the inner layer of the double-layer heat-shrinkable tubing for new energy automobile insulation protection should meet the following requirements:
Figure FDA0002652420260000011
Figure FDA0002652420260000021
4. the double-layer heat-shrinkable sleeve for insulation protection of new energy vehicles according to claim 1, wherein the halogen-free flame-retardant polyester elastomer material is bright orange.
5. The manufacturing method of the double-layer heat-shrinkable sleeve for the insulation protection of the new energy automobile as claimed in claim 1, 2, 3 or 4, characterized by comprising the following steps:
step 1: respectively carrying out composite co-extrusion by two plastic extruders: extruding the bright orange halogen-free flame-retardant polyester elastomer material by one plastic extruder, extruding the halogen-free high flame-retardant polyolefin material by the other plastic extruder, extruding the two materials to form a double-layer pipe with a concentric circle structure, wherein the outer layer is the bright orange halogen-free flame-retardant polyester elastomer material, the inner layer is the halogen-free high flame-retardant polyolefin material, and the thickness ratio of the inner layer material to the outer layer material is 1:9 to 5: 5;
step 2: irradiating the double-layer pipe obtained in the step 1 by high-energy electron rays with the dose of 12-18Mrad or gamma rays with the dose of 120-150 KGY;
and step 3: and (3) heating and softening the double-layer pipe obtained in the step (2), expanding by 2-3 times, and cooling and shaping to obtain the double-layer heat-shrinkable sleeve for the new energy automobile insulation protection.
CN202010876582.5A 2020-08-27 2020-08-27 Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof Pending CN111959048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010876582.5A CN111959048A (en) 2020-08-27 2020-08-27 Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010876582.5A CN111959048A (en) 2020-08-27 2020-08-27 Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111959048A true CN111959048A (en) 2020-11-20

Family

ID=73399778

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010876582.5A Pending CN111959048A (en) 2020-08-27 2020-08-27 Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111959048A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276928A (en) * 2011-06-17 2011-12-14 湖北祥源新材科技有限公司 Olefin rubber high-flame-retardant oil-resistant heat-shrinkable bush and preparation method thereof
CN103059359A (en) * 2012-11-20 2013-04-24 深圳市沃尔核材股份有限公司 Soft and flexible heat-shrinkable tube with properties of high fire retardance and oil resistance and production method thereof
CN203165492U (en) * 2012-10-25 2013-08-28 江苏江扬线缆有限公司 Soft cable applied to environment friendly and cold-resistant elastic body double layer insulation electronic appliance
CN106560900A (en) * 2015-10-02 2017-04-12 日立金属株式会社 Non-halogen Multilayer Insulating Wire
CN106633355A (en) * 2016-12-28 2017-05-10 上海长园电子材料有限公司 Shielding double-layer heat shrinkable casing pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276928A (en) * 2011-06-17 2011-12-14 湖北祥源新材科技有限公司 Olefin rubber high-flame-retardant oil-resistant heat-shrinkable bush and preparation method thereof
CN203165492U (en) * 2012-10-25 2013-08-28 江苏江扬线缆有限公司 Soft cable applied to environment friendly and cold-resistant elastic body double layer insulation electronic appliance
CN103059359A (en) * 2012-11-20 2013-04-24 深圳市沃尔核材股份有限公司 Soft and flexible heat-shrinkable tube with properties of high fire retardance and oil resistance and production method thereof
CN106560900A (en) * 2015-10-02 2017-04-12 日立金属株式会社 Non-halogen Multilayer Insulating Wire
CN106633355A (en) * 2016-12-28 2017-05-10 上海长园电子材料有限公司 Shielding double-layer heat shrinkable casing pipe

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
乌培熙: "《塑料制品生产工艺手册》", 31 May 1998, 化学工业出版社 *
刘大华: "《合成橡胶工业手册》", 31 December 1991, 化学工业出版社 *
孙酣经: "《化工新材料产品及应用手册》", 31 January 2002, 中国石化出版社 *

Similar Documents

Publication Publication Date Title
EP2684677B1 (en) Advanced halogen free flame retardant composition for heat shrinkable material and method of making the same
CN102766293B (en) Radiation cross-linked low-smoke halogen-free red phosphorus-free flame retardant material and application thereof
EP0690458A2 (en) Insulating composition and formed article thereof
CN100387646C (en) Fire-retarding thermal-shrinked indicated double pipe of radiant cross-linked and its preparation
CN101987902A (en) Halogen-free thermoplastic elastomer and manufacturing method thereof and environment-friendly electric wires and cables using halogen-free thermoplastic elastomer
KR102082674B1 (en) Power cable with insulation layer having excellent transparence
US10177468B2 (en) Heat-shrinkable protective element
CN101845178A (en) Torsion-resistant wind power generation cable and insulation material thereof
CN209000625U (en) A kind of single environmental protection medium-pressure power cable
CN104900334A (en) 10-35kv insulating tubular bus and manufacturing method thereof
CN113150430A (en) Self-crosslinking polyethylene heat-shrinkable tube material and preparation method and application thereof
CN111961274A (en) Insulating material for photovoltaic cable and preparation method thereof
CN101587761A (en) Weatherproof solar photovoltaic cable and fabricating method thereof
CN116987345B (en) Heat-resistant insulating overhead cable and preparation method thereof
CN111959048A (en) Double-layer heat-shrinkable sleeve for insulation protection of new energy automobile and preparation method thereof
CN109354882B (en) Intrinsic flame-retardant silicone rubber heat-shrinkable tubing and preparation method thereof
CN107955337B (en) Radio frequency line PE sheath
CN207319725U (en) New high life three-layer insulated safety wire
CN204946602U (en) A kind of CRH series motor train unit standard wall heavy insulation cable
CN101540216A (en) 150 DEG C irradiation cross-linked computer cable and method for manufacturing same
CN112521675A (en) Insulating cold-resistant cable material and preparation method and application thereof
CN112820450A (en) Wire and cable for high-temperature-resistant high-voltage thin-wall insulation railway passenger car
CN114801341A (en) Puncture-resistant insulating double-layer heat-shrinkable tube and preparation method thereof
CN105367878A (en) Preparation method of conductive composite
Sen Cable technology

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20201120