CN114605791A

CN114605791A - Ribbon and preparation method thereof

Info

Publication number: CN114605791A
Application number: CN202210309959.8A
Authority: CN
Inventors: 张如松; 范圣祥; 薛庆波; 尹纯朕
Original assignee: Jinan Jitong Intelligent Manufacturing Co ltd
Current assignee: Jinan Jitong Intelligent Manufacturing Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-06-10

Abstract

The application relates to a ribbon and a preparation method thereof, the ribbon is prepared from modified nylon 66, and the modified nylon 66 comprises the following raw materials in parts by weight: 26-70 parts of nylon; 5-15 parts of a grafted POE toughening agent; 5-10 parts of polytetrafluoroethylene; 5-10 parts of a dispersing agent; 5-10 parts of a compatilizer; 5-10 parts of a coupling agent; 5-10 parts of a lubricant; 5-10 parts of an antioxidant; 5-10 parts of an anti-ultraviolet agent; 5-10 parts of a heat stabilizer; 3-8 parts of a slow release stabilizer, wherein the slow release stabilizer comprises 7-dehydrocholesterol and carbon black, and the weight ratio of the 7-dehydrocholesterol to the carbon black is 5: (2-4). The preparation method of the ribbon comprises the steps of S1, mixing; s2, granulating; and S3, injection molding. This application has the effect that reduces the harmful effects of ageing to ribbon ligature performance.

Description

Ribbon and preparation method thereof

Technical Field

The application relates to the field of high polymer materials, in particular to a cable tie and a preparation method thereof.

Background

The binding band is also called a binding band, a binding band or a locking band, and is a band for binding things, and generally can be divided into a plastic binding band, a stainless steel binding band, a plastic spraying stainless steel binding band and the like according to materials. During the use process, due to the combined action of environmental factors such as heat, oxygen, water, light, microorganisms, chemical media and the like, the chemical composition and the structure of the plastic can generate a series of changes, and the physical properties can also correspondingly deteriorate, such as hardness, stickiness, brittleness, color change, strength loss and the like, and the changes and the phenomena are called aging.

In the related art, for example, chinese patent publication No. CN113527834A discloses a high temperature resistant PEEK self-locking plastic cable tie, in which the head, body and tail of the cable tie are made of a material containing PEEK. Polyetheretherketone-containing materials include polyetheretherketone and polytetrafluoroethylene. The cable tie has good long-term high-temperature resistance, mould resistance and high-low temperature cycle resistance.

With respect to the above-described related art, the inventors consider that: in the use process of the plastic binding tape, the plastic binding tape can be exposed under the light, and the plastic binding tape is easy to age under the light, so that the binding performance of the binding tape is reduced.

Disclosure of Invention

In order to make the ribbon difficult ageing under the illumination to reduce ageing bad influence to ribbon ligature performance, this application provides a ribbon and preparation method thereof.

In a first aspect, the application provides a ribbon, which adopts the following technical scheme:

the ribbon is prepared from modified nylon 66, wherein the modified nylon 66 comprises the following raw materials in parts by weight: 26-70 parts of nylon; 5-15 parts of a grafted POE toughening agent; 5-10 parts of polytetrafluoroethylene; 5-10 parts of a dispersing agent; 5-10 parts of a compatilizer; 5-10 parts of a coupling agent; 5-10 parts of a lubricant; 5-10 parts of an antioxidant; 5-10 parts of an anti-ultraviolet agent; 5-10 parts of a heat stabilizer; 3-8 parts of a slow release stabilizer, wherein the slow release stabilizer comprises 7-dehydrocholesterol and carbon black, and the weight ratio of the 7-dehydrocholesterol to the carbon black is 5: (2-4).

By adopting the technical scheme, the nylon 66, the carbon black and the 7-dehydrocholesterol are matched for use, and the carbon black absorbs ultraviolet rays and visible light, so that the nylon 66 is not easy to degrade under the action of illumination, the modified nylon 66 is not easy to age, and the adverse effect of aging on the binding performance of the binding belt is further reduced; the carbon black absorbs ultraviolet rays and visible light to generate heat, so that the 7-dehydrocholesterol generates ergocalciferol under the action of the ultraviolet rays, the ergocalciferol captures free radicals generated by the decomposition of the nylon 66 under the action of illumination, the degradation rate of the modified nylon 66 under the action of illumination is slowed down, and the adverse effect of aging on the binding performance of the binding tape is further reduced.

Optionally, the modified nylon 66 further comprises 3-8 parts by weight of tetrachloroisophthalonitrile.

By adopting the technical scheme, when the bandage is used in a dark environment, 7-dehydrocholesterol is not easy to decompose, and at the moment, tetrachloroisophthalonitrile inhibits the growth of mould and the like on the bandage, so that the microbial resistance of the bandage is improved, and the aging rate of the bandage is slowed down; under illumination, tetrachloroisophthalonitrile and ergocalciferol jointly inhibit the growth of microorganisms, and tetrachloroisophthalol has good illumination resistance and heat resistance stability, so that the microbial resistance of the ribbon under illumination is further improved, and the aging rate of the ribbon is further slowed down; the tetrachloroisophthalonitrile and the ergocalciferol are used in a matched manner, so that the aging resistance of the ribbon in different environments is improved, and the adverse effect of aging on the binding performance of the ribbon is reduced.

Optionally, the modified nylon 66 further comprises 3-8 parts by weight of zinc powder.

By adopting the technical scheme, the zinc powder captures free radicals, so that the degradation rate of the modified nylon 66 is reduced, and the aging resistance of the modified nylon 66 is improved; the zinc powder and the 7-dehydrocholesterol are adsorbed mutually, and in the mixing stage of the modified nylon 66 raw material, the zinc powder is uniformly distributed in the mixture under the drive of the 7-dehydrocholesterol, so that the distribution uniformity of the zinc powder in the ribbon is improved, the zinc powder can fully play a role when the ribbon is used, the aging resistance of the modified nylon 66 is further improved, and the adverse effect of aging on the binding performance of the ribbon is reduced.

Optionally, the grafted POE toughening agent is a maleic anhydride grafted POE toughening agent.

By adopting the technical scheme, the maleic anhydride grafted POE toughening agent is beneficial to uniformly dispersing the grafted POE toughening agent in the raw material of the modified nylon 66; the maleic anhydride grafted POE toughening agent is matched with the zinc powder, so that the dispersion uniformity of the zinc powder in the modified nylon 66 mixed material is improved, the aging resistance of the modified nylon 66 is improved, and the adverse effect of aging on the binding performance of the binding belt is reduced.

Optionally, the dispersant is isobutanolamine.

By adopting the technical scheme, the pH value of the modified nylon 66 mixture is adjusted by the isobutanol amine, so that the efficiency of decomposing 7-dehydrocholesterol into ergocalciferol is improved, the aging resistance of the ribbon is improved, and the adverse effect of aging on the binding performance of the ribbon is reduced.

Optionally, the modified nylon 66 further comprises 5-10 parts of a flame retardant.

Through adopting above-mentioned technical scheme, the fire retardant has improved the fire behaviour of ribbon, and the ribbon is when using in high temperature environment for a long time, is difficult for because of the temperature is high, frictional force is big and there is the ignition material and the burning to the security that the ribbon used has been improved.

In a second aspect, the preparation method of the ribbon provided by the application adopts the following technical scheme:

a preparation method of the ribbon comprises the following steps:

s1, uniformly stirring nylon 66, a maleic anhydride grafted POE flexibilizer, polytetrafluoroethylene, isobutanolamine, a compatilizer, a coupling agent, a lubricant, an antioxidant, an anti-ultraviolet agent, a heat stabilizer, a flame retardant, tetrachloroisophthalonitrile, 7-dehydrocholesterol and carbon black to obtain a mixed material;

s2, granulating the mixture obtained in the step S1 to obtain modified nylon 66 particles;

s3, carrying out injection molding on the modified nylon 66 particles to obtain the ribbon, wherein the injection molding temperature is 260-300 ℃, the heating time of the injection molding is 20S, and the pressure of the injection molding is 55 MPa.

By adopting the technical scheme, all materials are uniformly mixed and then granulated, all the materials in the obtained modified nylon 66 particles are uniformly distributed, and the modified nylon 66 particles are subjected to injection molding, so that the performance of the cable tie is stable; the ribbon prepared by the method has simple process and good product stability.

Optionally, injection molding is performed by zone heating, wherein the temperature of the first zone is 260 ℃, the temperature of the second zone is 270 ℃, the temperature of the third zone is 280 ℃, the temperature of the fourth zone is 290 ℃, and the temperature of the fifth zone is 300 ℃.

By adopting the technical scheme, the injection molding process is heated in a partitioned mode, so that the preparation process of the ribbon is accurately controlled, the prepared ribbon is good in flexibility and high in tensile strength.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the nylon 66, the carbon black and the 7-dehydrocholesterol are matched for use, the carbon black absorbs ultraviolet rays and visible light, so that the nylon 66 is not easy to degrade under the action of illumination, and the modified nylon 66 is not easy to age, thereby reducing the adverse effect of aging on the binding performance of the binding belt; the carbon black absorbs ultraviolet rays and visible light to generate heat, so that the 7-dehydrocholesterol generates ergocalciferol under the action of the ultraviolet rays, the ergocalciferol captures free radicals generated by the decomposition of the nylon 66 under the action of illumination, the degradation rate of the modified nylon 66 under the action of illumination is slowed down, and the adverse effect of aging on the binding performance of the binding tape is further reduced;

2. the ergocalciferol inhibits the growth of bacteria, so that the modified nylon 66 is not easy to age due to the influence of microorganisms, and the adverse effect of aging on the binding performance of the binding tape is reduced;

3. the carbon black absorbs ultraviolet rays, so that the nylon 66 is not easily degraded under the action of the ultraviolet rays, and the modified nylon 66 is not easily aged, thereby reducing the adverse effect of the aging on the binding performance of the binding belt;

4.7-dehydrocholesterol is used as an emulsifier in the raw material mixing stage of the modified nylon 66, so that the dispersion uniformity of all materials in the modified nylon 66 can be effectively improved;

5. when the bandage is used in a dark environment, 7-dehydrocholesterol is not easy to decompose, and tetrachloroisophthalonitrile inhibits the breeding of mould on the bandage; under illumination, tetrachloroisophthalonitrile and ergocalciferol jointly inhibit the growth of microorganisms, and tetrachloroisophthalonitrile has good illumination resistance and heat resistance stability, so that the microorganism resistance of the ribbon under illumination is further improved; the tetrachloroisophthalonitrile is matched with the ergocalciferol for use, so that the aging resistance of the ribbon in different environments is improved, and the adverse effect of aging on the binding performance of the ribbon is reduced;

6. the zinc powder inhibits the breeding of strains on the binding belt, and improves the bacterial resistance of the binding belt, so that the aging resistance of the modified nylon 66 is improved; under illumination, the nylon 66 is degraded to generate free radicals, and the zinc powder captures the free radicals, so that the degradation rate of the nylon 66 is reduced, and the aging resistance of the modified nylon 66 is improved; the zinc powder and the 7-dehydrocholesterol are adsorbed with each other, and the zinc powder is uniformly distributed in the mixture under the drive of the 7-dehydrocholesterol in the mixing stage of the modified nylon 66 raw material, so that the distribution uniformity of the zinc powder in the ribbon is improved, and the zinc powder can fully play a role when the ribbon is used, thereby improving the aging resistance of the modified nylon 66 and reducing the adverse effect of aging on the binding performance of the ribbon;

7. the pH value of the modified nylon 66 mixture is adjusted by the isobutanol amine, so that the efficiency of decomposing 7-dehydrocholesterol into ergocalciferol is improved, the microbial resistance of the binding tape is improved, the modified nylon 66 is not easy to age, and the adverse effect of aging on the binding performance of the binding tape is reduced.

Detailed Description

The present application will be described in further detail with reference to examples and comparative examples.

The following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples were obtained from ordinary commercial sources unless otherwise specified.

Nylon 66 is provided by chemical limited, Jinchuan, Jinma, Jinan;

the maleic anhydride grafted POE flexibilizer and the compatilizer are provided by Gallery Haoyang plastic science and technology Limited;

polytetrafluoroethylene is available from Guangzhou hongtao plastication Limited;

isobutanolamine is available from Pan (Shanghai) International trade, Inc.;

the antioxidant is provided by Shandong Henlilong New Material Co., Ltd;

coupling agents are supplied by Shandong Yilong chemical company, Inc.;

the anti-ultraviolet agent is provided by Jinan Huiyuan Chuan chemical Co., Ltd;

lubricants are supplied by the chemical company, dennaegsen;

the heat stabilizer is provided by Jinnanbao chemical company Limited;

the flame retardant is provided by Shandong Xiuchui chemical Co Ltd;

the 7-dehydrocholesterol was supplied by Tianmen Henchang chemical Co., Ltd;

carbon black is provided by Kjen chemical Co., Ltd, Shanghai, D₉₀＝25nm；

Tetrachloroisophthalonitrile was supplied by Hubei Jiu Fenglong chemical Co., Ltd;

the zinc powder is provided by new material science and technology limited of Tianjin high-tech, and the fineness is 1500 meshes.

Examples

Example 1

S1, putting 26kg of nylon 66, 5kg of maleic anhydride grafted POE toughening agent, 5kg of polytetrafluoroethylene, 5kg of isobutanolamine, 5kg of compatilizer, 5kg of coupling agent, 5kg of lubricating agent, 5kg of antioxidant, 5kg of ultraviolet resistant agent, 5kg of heat stabilizer, 5kg of 7-dehydrocholesterol and 3kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

s2, carrying out melt extrusion granulation on the mixed material obtained in the step S1 through a double-screw extruder to obtain modified nylon 66 particles;

s3, adjusting the partition temperature of the injection molding machine, wherein the first partition temperature is 260 ℃, the second partition temperature is 270 ℃, the third partition temperature is 280 ℃, the fourth partition temperature is 290 ℃, the fifth partition temperature is 300 ℃, the heating time of the injection molding machine is 20S, the pressure is 55MPa, and the modified nylon 66 particles are placed into the injection molding machine for injection molding to obtain the ribbon.

Example 2

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 3

S1, putting 26kg of nylon 66, 10kg of maleic anhydride grafted POE flexibilizer, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 4

S1, putting 70kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 5

S1, putting 40kg of nylon 66, 5kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 6

S1, putting 40kg of nylon 66, 15kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 7

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 5kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 8

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE flexibilizer, 10kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 9

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 5kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 10

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 10kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 11

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of stearate, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 5kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 12

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 10kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 13

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 5kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

s3, adjusting the zone temperature of an injection molding machine, wherein the first zone temperature is 260 ℃, the second zone temperature is 270 ℃, the third zone temperature is 280 ℃, the fourth zone temperature is 290 ℃, the fifth zone temperature is 300 ℃, the heating time of the injection molding machine is 20S, the pressure is 55MPa, and the modified nylon 66 particles are placed into the injection molding machine for injection molding to obtain the ribbon.

Example 14

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE flexibilizer, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 10kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 15

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 5kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 16

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 10kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 17

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 5kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 18

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 10kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 19

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 5kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 20

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 10kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 21

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 5kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 22

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 10kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 23

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 5kg of 7-dehydrocholesterol and 3kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 24

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 5kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 25

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 5kg of 7-dehydrocholesterol and 8kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 26

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 3kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 27

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol and 8kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 28

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 15kg of 7-dehydrocholesterol and 3kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 29

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 15kg of 7-dehydrocholesterol and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 30

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 15kg of 7-dehydrocholesterol and 8kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 31

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black and 5kg of tetrachloroisophthalonitrile into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 32

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black and 8kg of tetrachloroisophthalonitrile into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 33

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black and 10kg of tetrachloroisophthalonitrile into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 34

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 8kg of tetrachloroisophthalonitrile and 3kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 35

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 8kg of tetrachloroisophthalonitrile and 5kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 36

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 8kg of tetrachloroisophthalonitrile and 8kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 37

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black and 4kg of flame retardant into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 38

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 4kg of flame retardant, 8kg of tetrachloroisophthalonitrile and 5kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 39

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 8kg of flame retardant, 8kg of tetrachloroisophthalonitrile and 5kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Example 40

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricating agent, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer, 10kg of 7-dehydrocholesterol, 5kg of carbon black, 10kg of flame retardant, 8kg of tetrachloroisophthalonitrile and 5kg of zinc powder into a high-speed stirrer, and uniformly stirring to obtain a mixture;

EXAMPLE 41

S1, putting 70kg of nylon 66, 15kg of maleic anhydride grafted POE flexibilizer, 10kg of polytetrafluoroethylene, 10kg of isobutanolamine, 10kg of compatilizer, 10kg of coupling agent, 10kg of lubricant, 10kg of antioxidant, 10kg of ultraviolet resistant agent, 10kg of heat stabilizer, 15kg of 7-dehydrocholesterol and 8kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Comparative example

Comparative example 1

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent and 7kg of heat stabilizer into a high-speed stirrer, and uniformly stirring to obtain a mixture;

s3, adjusting the zone temperature of the injection molding machine, wherein the first zone temperature is 260 ℃, the second zone temperature is 270 ℃, the third zone temperature is 280 ℃, the fourth zone temperature is 290 ℃, the fifth zone temperature is 300 ℃, the heating time of the injection molding machine is 20S, the pressure is 55MPa, putting the modified nylon 66 particles into the injection molding machine for injection molding, and obtaining the comparative band example 2

Comparative example 2

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer and 10kg of 7-dehydrocholesterol into a high-speed stirrer, and uniformly stirring to obtain a mixture;

Comparative example 3

S1, putting 40kg of nylon 66, 10kg of maleic anhydride grafted POE toughening agent, 8kg of polytetrafluoroethylene, 7kg of isobutanolamine, 7kg of compatilizer, 7kg of coupling agent, 7kg of lubricant, 7kg of antioxidant, 7kg of ultraviolet resistant agent, 7kg of heat stabilizer and 5kg of carbon black into a high-speed stirrer, and uniformly stirring to obtain a mixture;

The raw material tables of the examples and comparative examples are shown in table 1:

TABLE 1 raw material tables (kg) of examples and comparative examples

Performance test

Test method

1. The method adopts GB/T3681.2-2021 Plastic solar radiation exposure test method part 2: direct weathering and post-exposure weathering of window glass.

2. The tensile strength of the ribbon is measured by the method in GB/T1040.1-2018 for measuring the tensile property of plastics, and the tensile strength loss rate is calculated by the following formula:

the results are detailed in table 2.

3. The 2 nd part of the combustion behavior is determined by the oxygen index method of GB/T2406.2-2009 plastics: method B of Room temperature test for measuring the flame retardant property of the ribbon by diffusion ignition method, and the test results are detailed in Table 2

Table 2 is a table of test results data for each example and comparative example:

TABLE 2 test result data table of each example and comparative example

By combining the embodiment 1, the embodiment 2 and the embodiment 41 and combining the table 2, the proportion of the modified nylon 66 is more accurate, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is less by the addition amounts of the nylon 66, the maleic anhydride grafted POE flexibilizer, the polytetrafluoroethylene, the isobutanolamine, the compatilizer, the coupling agent, the lubricant, the antioxidant, the ultraviolet resistant agent, the heat stabilizer, the 7-dehydrocholesterol and the carbon black.

By combining the embodiment 2, the embodiment 3 and the embodiment 4 and combining the table 2, the proportion of the modified nylon 66 is more accurate and the aging resistance of the modified nylon 66 is more stable by adjusting the addition amount of the nylon 66.

By combining the embodiment 2, the embodiment 5 and the embodiment 6 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the maleic anhydride grafted POE, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is smaller.

Combine embodiment 2, embodiment 7 and embodiment 8 and combine table 2, through the addition of adjustment polytetrafluoroethylene for the ratio of modified nylon 66 is more accurate, and modified nylon 66's ageing-resistant performance is more stable, and ageing is less to ribbon ligature performance's influence.

Combining examples 2, 9 and 10 with table 2, it can be seen that as the amount of isobutanol amine added increases, the tensile strength of the unaged tie increases and then decreases, the loss of tensile strength after aging of the tie decreases and then increases, and the aging resistance of the tie increases and then decreases. The reason is that when the isobutanolamine is used as a dispersing agent to improve the dispersion uniformity of all raw materials of the modified nylon 66, the pH value of the modified nylon 66 mixture can be adjusted, an acid environment is provided for the decomposition of 7-dehydrocholesterol, and the efficiency of ultraviolet absorption of the ergocalciferol which is a decomposition product of the 7-dehydrocholesterol is improved, so that the decomposition efficiency of the nylon 66 is reduced, the aging resistance of the modified nylon 66 is improved, and the adverse effect of aging on the binding performance of a binding tape is reduced.

By combining the embodiment 2, the embodiment 11 and the embodiment 12 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the antioxidant, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is smaller.

By combining the embodiment 2, the embodiment 13 and the embodiment 14 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the compatilizer, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is smaller.

By combining the embodiment 2, the embodiment 15 and the embodiment 16 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the coupling agent, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is smaller.

By combining the embodiment 2, the embodiment 17 and the embodiment 18 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the lubricant, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is smaller.

By combining the embodiment 2, the embodiment 19 and the embodiment 20 and combining the table 2, the proportion of the modified nylon 66 is more accurate, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is less by adjusting the addition amount of the ultraviolet resistant agent.

By combining the embodiment 2, the embodiment 21 and the embodiment 22 and combining the table 2, the proportion of the modified nylon 66 is more accurate by adjusting the addition amount of the heat stabilizer, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding tape is less.

By combining the embodiment 2, the embodiments 23 to 30 and the table 2, the proportion of the modified nylon 66 is more accurate, the aging resistance of the modified nylon 66 is more stable, and the influence of aging on the binding performance of the binding belt is less by adjusting the addition amounts of the 7-dehydrocholesterol and the carbon black.

In combination with example 2, example 24 and example 29, and with Table 2, it can be seen that increasing the amount of 7-dehydrocholesterol added without changing the amount of carbon black added increased the tensile strength of the unaged tie first and then decreased, and the loss of tensile strength after aging of the tie first and then increased. The reason is that the 7-dehydrocholesterol is decomposed under the action of ultraviolet rays and heat to generate ergocalciferol which effectively inhibits the growth of bacteria, so that the ribbon is not easy to age due to the influence of microorganisms; the ergocalciferol captures free radicals generated by photolysis of the nylon 66, so that the photodegradation rate of the nylon 66 is reduced, and the aging resistance of the modified nylon 66 is improved. The addition amount of the 7-dehydrocholesterol is continuously increased, the 7-dehydrocholesterol partially positioned in the ribbon is not easy to contact with ultraviolet rays, the content of ergocalciferol obtained by decomposing the 7-dehydrocholesterol is reduced, and the loss rate of the tensile strength of the ribbon is increased.

As can be seen by combining example 2, comparative example 1, comparative example 2 and comparative example 3, and by combining Table 2, the rate of loss of tensile strength after the aging treatment of the ribbon is reduced by the addition of 7-dehydrocholesterol.

Combining example 2, example 26 and example 27 with table 2, it can be seen that, in the case where the amount of added 7-dehydrocholesterol is not changed, the amount of added carbon black is increased, the tensile strength of the ribbon without aging treatment is increased and then decreased, and the loss of tensile strength after aging treatment of the ribbon is decreased and then increased, because the carbon black absorbs ultraviolet rays and visible light, so that the photodecomposition rate of nylon 66 is decreased, the ultraviolet resistance of the ribbon is improved, and the aging rate of the ribbon is decreased. The carbon black content is increased, the ultraviolet absorption rate of the carbon black is increased, and the heat energy converted by the carbon black absorbing ultraviolet and visible light improves the decomposition efficiency of the 7-dehydrocholesterol, so that the aging resistance of the modified nylon 66 is improved.

It can be seen from the combination of example 2, comparative example 1, comparative example 2 and comparative example 3, and from Table 2 that the tensile strength loss rate after the aging treatment of the ribbon decreases with the addition of carbon black.

Combining example 2, example 31, example 32 and example 33 with combination 2, it can be seen that the tensile strength of the unaged tie increases and then decreases, and the loss rate of the tensile strength after the aging treatment of the tie decreases and then increases, as the amount of tetrachloroisophthalonitrile added increases. The reason is that when the bandage is used in a dark environment, 7-dehydrocholesterol is not easy to decompose, and tetrachloroisophthalonitrile inhibits the breeding of mould and the like on the bandage; under illumination, tetrachloroisophthalonitrile and ergocalciferol jointly inhibit the growth of microorganisms, and tetrachloroisophthalonitrile has good illumination resistance and heat resistance stability, so that the microbial resistance of the ribbon under illumination is further improved; the tetrachloroisophthalonitrile and the ergocalciferol are used in a matched manner, so that the aging resistance of the ribbon under different environments is improved. With the continuous increase of the adding amount of tetrachloroisophthalonitrile, the content of the slow release stabilizer is reduced, the aging resistance of the modified nylon 66 is reduced, and the loss rate of the tensile strength of the cable tie after aging treatment is increased.

Combining example 2, example 34, example 35 and example 36, and combining table 2, it can be seen that as the amount of zinc powder added increases, the tensile strength of the unaged tie increases and then decreases, and the loss of tensile strength of the tie after aging decreases and then increases. The reason is that the zinc powder inhibits the breeding of strains on the binding belt and improves the bacterial resistance of the binding belt, so that the aging resistance of the modified nylon 66 is improved; under illumination, the nylon 66 is degraded to generate free radicals, and the zinc powder captures the free radicals, so that the degradation rate of the nylon 66 is reduced, and the aging resistance of the modified nylon 66 is improved; the zinc powder and the 7-dehydrocholesterol are adsorbed mutually, and the zinc powder is uniformly distributed in the mixture under the drive of the 7-dehydrocholesterol in the mixing stage of the modified nylon 66 raw material, so that the distribution uniformity of the zinc powder in the ribbon is improved, the zinc powder can fully play a role when the ribbon is used, and the aging resistance of the modified nylon 66 is further improved. The addition amount of zinc powder is continuously increased, the content of the slow release stabilizer is reduced, and the ultraviolet resistance of the modified nylon 66 is reduced, so that the aging resistance of the cable tie is reduced, and the loss rate of the tensile strength of the cable tie after aging treatment is increased.

Combining example 2 and example 37 with table 2, it can be seen that the increase of the combustion improver effectively increases the limiting oxygen index of the cable tie, so that the flame retardant property of the cable tie is enhanced.

It can be seen by combining example 38, example 39 and example 40 with table 2 that as the amount of flame retardant added increases, the limiting oxygen index of the tie increases, but the tensile strength of the tie decreases and the rate of loss of tensile strength after the aging treatment of the tie increases. The reason is that the flame retardant prevents the antioxidant, the 7-dehydrocholesterol and the carbon black from contacting with air, thereby reducing the ultraviolet absorption efficiency of the ribbon, and the photolysis rate of the nylon 66 is increased, thereby reducing the aging resistance of the ribbon.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The cable tie is characterized by being prepared from modified nylon 66, wherein the modified nylon 66 comprises the following raw materials in parts by weight: 26-70 parts of nylon; 5-15 parts of a grafted POE toughening agent; 5-10 parts of polytetrafluoroethylene; 5-10 parts of a dispersing agent; 5-10 parts of a compatilizer; 5-10 parts of a coupling agent; 5-10 parts of a lubricant; 5-10 parts of an antioxidant; 5-10 parts of an anti-ultraviolet agent; 5-10 parts of a heat stabilizer; 3-8 parts of a slow release stabilizer, wherein the slow release stabilizer comprises 7-dehydrocholesterol and carbon black, and the weight ratio of the 7-dehydrocholesterol to the carbon black is 5: (2-4).

2. The cable tie of claim 1, wherein the modified nylon 66 further comprises 3 to 8 parts by weight of tetrachloroisophthalonitrile.

3. The tie of claim 2, wherein the modified nylon 66 further comprises 3 to 8 parts by weight of zinc powder.

4. A tie according to claim 2, wherein the grafted POE toughening agent is a maleic anhydride grafted POE toughening agent.

5. A tie according to claim 4, wherein the dispersant is an isobutanolamine.

6. The cable tie of claim 5, wherein the modified nylon 66 further comprises 5 to 10 parts of a flame retardant.

7. A method of preparing a cable tie according to claim 6, comprising the steps of:

s1, uniformly stirring nylon 66, a maleic anhydride grafted POE flexibilizer, polytetrafluoroethylene, isobutanolamine, a compatilizer, a coupling agent, a lubricant, an antioxidant, an anti-ultraviolet agent, a heat stabilizer, a flame retardant, tetrachloroisophthalonitrile, 7-dehydrocholesterol and carbon black to obtain a mixture;

8. A method according to claim 7, characterized in that the injection moulding is carried out with zoned heating, the first zone temperature being 260 ℃, the second zone temperature being 270 ℃, the third zone temperature being 280 ℃, the fourth zone temperature being 290 ℃ and the fifth zone temperature being 300 ℃.