阅读说明：本技术 一种辐照交联超柔韧耐弯曲耐磨低烟无卤组合物及其应用 (Irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition and application thereof ) 是由 王登辉 吕成建 王志豪 于 2020-12-28 设计创作，主要内容包括：本发明提供了一种辐照交联超柔韧耐弯曲耐磨低烟无卤组合物及其应用。该辐照交联超柔韧耐弯曲耐磨低烟无卤组合物的原料组成包括：20重量份-30重量份的超软弹性体聚乙烯,10重量份-15重量份的乙烯-醋酸乙烯共聚物,10重量份-15重量份的增韧剂,90重量份-120重量份的表面硅烷处理氢氧化铝,1重量份-3重量份的偶联助剂,5重量份-7重量份的抗氧剂,2重量份-3重量份的交联剂,1重量份-3重量份的润滑剂。该辐照交联超柔韧耐弯曲耐磨低烟无卤组合物可以应用在电动汽车充电桩的电缆上。本发明的辐照交联超柔韧耐弯曲耐磨低烟无卤组合物的耐温性能好,耐弯曲性能好,柔韧性能好。(The invention provides an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition and application thereof. The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition comprises the following raw materials: 20-30 parts of ultra-soft elastomer polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 10-15 parts of toughening agent, 90-120 parts of surface silane treated aluminum hydroxide, 1-3 parts of coupling aid, 5-7 parts of antioxidant, 2-3 parts of cross-linking agent and 1-3 parts of lubricant. The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition can be applied to cables of electric automobile charging piles. The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition has good temperature resistance, good bending resistance and good flexibility.)

1. An irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition comprises the following raw materials: 20-30 parts of ultra-soft elastomer polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 10-15 parts of toughening agent, 90-120 parts of surface silane treated aluminum hydroxide, 1-3 parts of coupling aid, 5-7 parts of antioxidant, 2-3 parts of cross-linking agent and 1-3 parts of lubricant.

2. The irradiation crosslinked flexible corrosion-resistant low-smoke halogen-free composition according to claim 1, wherein the toughening agent is a mixed compatilizer of ethylene propylene rubber and POE.

3. The irradiation crosslinked, flexible, corrosion-resistant, low-smoke, halogen-free composition of claim 1, wherein the coupling aid is a silane coupling agent 172.

4. The irradiation crosslinked flexible corrosion-resistant low-smoke halogen-free composition according to claim 1, wherein the antioxidant is a copper inhibitor and/or a bisphenol anti-aging agent.

5. The irradiation crosslinked flexible corrosion-resistant low smoke zero halogen composition of claim 1, wherein the crosslinking agent is TAIC and/or TMATMB.

6. The radiation crosslinked flexible corrosion resistant low smoke zero halogen composition of claim 1, wherein the lubricant is silicone and/or wax.

7. The radiation crosslinked, flexible, corrosion resistant, low smoke, zero halogen composition of claim 1, wherein the ultra-soft elastomeric polyethylene has a hardness of 40A.

8. Use of the irradiation crosslinked ultra-flexible bend-resistant abrasion-resistant low-smoke halogen-free composition according to any one of claims 1 to 7 as a raw material for cables of electric vehicle charging piles.

9. A cable comprising the radiation crosslinked super flexible bend resistant abrasion resistant low smoke zero halogen composition of any one of claims 1 to 7.

Technical Field

The invention relates to a cable, in particular to an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, and belongs to the technical field of cable preparation.

Background

With the rapid development of electric automobiles in China, related supporting industries meet new development opportunities. As an indispensable important component of an electric vehicle, an electric vehicle cable has naturally received a great deal of attention. The electric vehicle cable material mainly considers the following characteristics:

(1) the use conditions are as follows: as the technology of the existing electric automobile is more and more mature, particularly the power transmission performance is enhanced, the number of times of bending and friction of the cable is increased in the assembling process, and the requirements on the flexibility, flexibility and mechanical performance of the cable material are increased;

(2) safety performance: because the electric automobile has high bending frequency of the cable and high current transmission heating, the material has high requirements on temperature resistance level and high-temperature cracking performance in use.

The existing low-smoke halogen-free cable material for the electric automobile mainly has the following problems: (1) the low-smoke halogen-free material for the common electric automobile mainly adopts thermoplastic low-smoke halogen-free material, the flexibility and the temperature resistance of the material are poor, the temperature resistance level is 90 ℃ (2), the hardness of the soft irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the electric automobile is generally over 85 Shore A, and the flexibility of the material has certain limitation.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide the cable for the electric automobile charging pile, which has good temperature resistance, good bending resistance and good flexibility.

In order to achieve the technical purpose, the invention provides an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, which comprises the following raw materials: 20-30 parts of ultra-soft elastomer polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 10-15 parts of toughening agent, 90-120 parts of surface silane treated aluminum hydroxide, 1-3 parts of coupling aid, 5-7 parts of antioxidant, 2-3 parts of cross-linking agent and 1-3 parts of lubricant.

In a specific embodiment of the invention, the toughening agent is a mixed compatibilizer of ethylene propylene rubber and POE. The coupling aid is a silane coupling agent 172. The antioxidant is a copper inhibitor and/or a bisphenol anti-aging agent. The crosslinking agent is TAIC and/or TMATMB. The lubricant is silicone and/or wax. The ultra-soft elastomeric polyethylene had a hardness of 40A.

In the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, the super-soft elastomer can enhance the flexibility of wires and cables; the ethylene-vinyl acetate copolymer and the lubricant can increase the fluidity in the processing of the electric wires and cables and can also improve the mechanical strength of the electric materials of the electric wires to a certain extent; the toughening agent can greatly improve the toughness and mechanical property of the wire and cable material; promoting compatibility of the elastomer and the ethylene copolymer; the aluminum hydroxide treated by the surface silane can improve the flame retardant effect of the wire and cable material; the coupling agent can increase the dispersibility of the inorganic flame retardant in the material; the antioxidant can improve the thermal aging and the service life of the material; the irradiation crosslinking agent enables the material to further improve various properties of the material after irradiation.

The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition is prepared by uniformly mixing the raw materials. For example, the preparation method can be prepared according to the following steps:

the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition is obtained by sequentially feeding the raw materials into a high-order mixing mill for mixing, an internal mixer for heating and internal mixing, double-order cone feeding, double-screw shearing and discharging, single-screw mixing and extruding, a granulator for granulating, a fan and bin collecting, a vibrating screen cooling material, a large bin for collecting and subpackaging and a vacuum machine plastic packaging material.

The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition can be used as a raw material of a cable of an electric automobile charging pile.

The invention also provides a cable which contains the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition.

The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition has the tensile strength of more than or equal to 10MPa, the elongation at break of more than or equal to 150 percent, and the hardness: the Shore A is 75A, and the performance retention rate of the aging condition is more than or equal to 70 percent at 150 ℃ for 240h or 175 ℃ for 240 h.

Detailed Description

Example 1

The embodiment provides an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, which comprises the following raw materials: 20 parts by weight of super-soft elastomer polyethylene (the hardness is 40A), 10 parts by weight of ethylene-vinyl acetate copolymer, 10 parts by weight of toughening agent, 90 parts by weight of surface silane treated aluminum hydroxide, 1 part by weight of coupling assistant, 5 parts by weight of antioxidant, 2 parts by weight of crosslinking agent and 1 part by weight of lubricant

Wherein the toughening agent is a mixed compatilizer of ethylene propylene rubber and POE. The coupling aid is a silane coupling agent 172. The antioxidant is bisphenol anti-aging agent. The crosslinker is TAIC. The lubricant is silicone.

The irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition is prepared by the following steps:

the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition is obtained by sequentially feeding the raw materials into a high-order mixing mill for mixing, an internal mixer for heating and internal mixing, double-order cone feeding, double-screw shearing and discharging, single-screw mixing and extruding, a granulator for granulating, a fan and bin collecting, a vibrating screen cooling material, a large bin for collecting and subpackaging and a vacuum machine plastic packaging material.

Example 2

The embodiment provides an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, which is different from the embodiment 1 in that the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition comprises the following raw materials: 30 parts of ultra-soft elastomer polyethylene (the hardness is 40A), 15 parts of ethylene-vinyl acetate copolymer, 15 parts of toughening agent, 120 parts of surface silane treated aluminum hydroxide, 3 parts of coupling agent, 7 parts of antioxidant, 3 parts of crosslinking agent and 3 parts of lubricant.

Example 3

The embodiment provides an irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition, which is different from the embodiment 1 in that the irradiation crosslinking super-flexible bending-resistant wear-resistant low-smoke halogen-free composition comprises the following raw materials: 25 parts of ultra-soft elastomer polyethylene (the hardness is 40A), 15 parts of ethylene-vinyl acetate copolymer, 12 parts of toughening agent, 110 parts of surface silane treated aluminum hydroxide, 2 parts of coupling agent, 6 parts of antioxidant, 2.5 parts of crosslinking agent and 2 parts of lubricant.

Comparative example 1

This comparative example provides a cable which differs from example 1 in that: 15 parts of ultra-soft elastomer polyethylene, 5 parts of ethylene copolymer, 5 parts of toughening agent, 70 parts of surface silane treated aluminum hydroxide, 0.5 part of coupling assistant, 4 parts of antioxidant, 1 part of crosslinking agent and 0.5 part of lubricant.

Comparative example 2

This comparative example provides a cable which differs from example 1 in that: 50 parts of ultra-soft elastomer polyethylene, 25 parts of ethylene copolymer, 25 parts of toughening agent, 150 parts of surface silane treated aluminum hydroxide, 5 parts of coupling aid, 8 parts of antioxidant, 5 parts of crosslinking agent and 4 parts of lubricant.

Comparative example 3

This comparative example provides a cable which differs from example 1 in that: the super-soft elastomer polyethylene has the hardness of 20A, the toughening agent of 15 parts by weight, the ethylene-vinyl acetate copolymer of 25 parts by weight, magnesium hydroxide substituted by surface silane treated aluminum hydroxide, the coupling assistant of 2 parts by weight, the antioxidant of 5 parts by weight, the crosslinking agent of 2.5 parts by weight and the lubricant of 2 parts by weight.

The examples 1 to 3 and the comparative examples 1 to 3 were subjected to the performance test of table 1, and the results are shown in table 1.

TABLE 1

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.