Bright-color gradient color safety belt and production process thereof

Abstract

The invention relates to a bright-color gradient-color safety belt and a production process thereof, and relates to the technical field of fabric production processes, and the bright-color gradient-color safety belt comprises a gradient-color woven belt and a color optimization finishing agent, the color optimization finishing agent comprises the following components in parts by mass: 20-30 parts of nano disperse dye, 10-15 parts of an ultraviolet light absorber, 5-10 parts of mesoporous silica, 15-20 parts of a color fixing agent, 5-8 parts of an organic silicon softening agent, 2-4 parts of a fluorescent whitening agent, 1-2 parts of a pH buffering agent and 30-40 parts of a solvent. The production process comprises the following steps: weaving more than two yarns with different colors to obtain a gradient yarn-dyed woven belt; the preparation method comprises the following steps: removing impurities, flattening to obtain a treated braid, padding the treated braid in a color optimization finishing agent, washing with water, fixing color, shaping in cold water, drying after treatment, packaging and storing to obtain the gradient color safety belt with bright color. The gradient color safety belt has the effect of improving the optical performance, the color fastness and the structural stability of the gradient color safety belt, and has a good safety protection function and durability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fabric production processes, in particular to a color-bright gradient color safety belt and a production process thereof. BACKGROUND

[0002] Safety belts play a crucial role in the field of motor vehicle safety protection. As a key safety line for drivers and passengers, safety belts can significantly reduce the harm caused to drivers and passengers in accidents and even save lives at critical moments. They are indispensable safety measures for every driver and passenger when traveling. With the rapid development of the automotive industry, people's attention to traffic safety is increasing, and the importance of safety belts is also increasingly prominent. At the same time, the widespread application of road monitoring systems makes the supervision of the wearing of safety belts by drivers and passengers more strict and efficient. However, the related technology of safety belts on the market is relatively backward in color design, which is difficult to meet some needs in actual use.

[0003] In the past, in order to protect the safety of drivers and passengers, the production of safety belts has always been the focus of the industry, but the color design is relatively conservative. The existing safety belt production mainly focuses on ensuring its strength and reliability and other basic performances, and the selection of colors is relatively single, generally adopting pure color design. The production process of such pure color safety belts is relatively mature and stable in meeting the basic safety functions. However, when the clothing of drivers and passengers is similar in color to the safety belt, the road camera will encounter difficulties in identifying whether the driver and passenger have fastened the safety belt. In this case, manual intervention is often needed for investigation, which not only consumes a large amount of public resources, but also is inefficient. Therefore, it is necessary to provide a color-bright gradient color safety belt, so that the road camera can effectively distinguish whether the driver and passenger have fastened the safety belt according to the regulations, and save resource investment. SUMMARY

[0004] In order to improve the identification of safety belts, the application provides a color-bright gradient color safety belt and a production process thereof.

[0005] The color-bright gradient color safety belt and the production process thereof provided by the application adopt the following technical solutions: In a first aspect, the application provides a color-bright gradient color safety belt, which adopts the following technical solutions: A color-bright gradient color safety belt comprises a gradient color belt and a color optimization finishing agent, and the color optimization finishing agent comprises the following components in mass fraction: Nano-dispersed dye 20-30 parts Ultraviolet absorber 10-15 parts Mesoporous silica 5-10 parts Fixing agent 15-20 parts 5-8 parts silicone softener 2-4 parts of fluorescent whitening agent 1-2 parts pH buffer 30-40 parts solvent.

[0006] An optical enhancement layer constructed through the synergistic use of nano-dispersed dyes and mesoporous silica improves the visual resolution of seat belts in complex environments. The nano-dyes, anchored by a mesoporous carrier, deeply penetrate the fibers, forming a highly saturated, naturally transitioning gradient color band. The combined action of ultraviolet absorbers and fluorescent whitening agents inhibits photodegradation and enhances the intensity of reflected light in specific wavelengths, ensuring that the webbing maintains bright and stable spectral characteristics even in strong light and rainy conditions. Organosilicon softeners reduce surface fuzz interference and mitigate the impact of dust obscuring. Compared to the shortcomings of traditional single-color seat belts, which are prone to color mixing with clothing and fading, this solution, through color fastness enhancement and dynamic spectral adaptation, ensures that the gradient color seat belt always maintains a high contrast difference with the background, improving the image capture accuracy of road cameras and reducing the false detection rate of not wearing seat belts.

[0007] Preferably, the nano-silica is prepared by modification treatment using the following steps: Mesoporous silica and 3-aminopropyltriethoxysilane were mixed in a solvent, the pH was adjusted to acidic, the mixture was heated and stirred, and then centrifuged, washed, and dried to obtain modified mesoporous silica.

[0008] Mesoporous silica was modified with 3-aminopropyltriethoxysilane. Under acidic conditions, the silane coupling agent hydrolyzed to form silanol groups, which underwent a dehydration condensation reaction with the hydroxyl groups on the surface of the mesoporous silica, allowing amino groups to be successfully grafted onto the silica surface. The introduction of amino groups gave the surface of the mesoporous silica a positive charge, which could combine with negatively charged nano-dispersed dyes through electrostatic adsorption and hydrogen bonding, significantly improving the enrichment efficiency of dyes on the webbing fibers. The modified mesoporous silica had better compatibility with other components in the color-optimizing finishing agent, such as fixing agents and ultraviolet absorbers, and could work synergistically on the webbing surface, improving the brightness of the color while enhancing the abrasion resistance and sunlight fastness of the seat belt, ultimately achieving a dual improvement in the product's visual effect and durability.

[0009] Preferably, the raw material for preparing the modified mesoporous silica further includes zinc nitrate, which is prepared using the following steps: Mesoporous silica, 3-aminopropyltriethoxysilane, and zinc nitrate were mixed in a solvent to obtain a dispersion. The pH was adjusted to acidic, and the mixture was heated and stirred to react. After the reaction, the mixture was centrifuged, washed, dried, calcined, and ground to obtain modified mesoporous silica.

[0010] 3-aminopropyl triethoxysilane is condensed with the surface hydroxyl groups of mesoporous silica to form an amino-modified layer, and zinc nitrate is hydrolyzed to generate zinc ions, which are embedded in the pores and surface of mesoporous silica through chemical bonding or physical adsorption, and then, after calcination, the zinc ions are converted into zinc oxide nanoparticles, which are uniformly loaded on the surface and pore structure of mesoporous silica and synergize with the amino-modified layer; the zinc oxide nanoparticles have excellent photocatalytic and ultraviolet shielding properties, which can synergize with ultraviolet absorbers to enhance the absorption and scattering ability of ultraviolet light, reduce the risk of dye photodegradation, and improve the lightfastness of the dye; the composite structure of amino and zinc oxide significantly enhances the affinity of mesoporous silica for nanodispersed dyes, the amino group adsorbs dye anions through electrostatic interaction, and the zinc oxide forms hydrogen bonds with the dye through surface hydroxyl groups, further improving the dye loading capacity and uniformity, making the color of the gradient color safety belt more bright and full, and the transition smoother; in addition, the rigid support of zinc oxide nanoparticles and the flexible combination of the amino layer optimize the microstructure of the belt surface, enhance the wear resistance and breaking strength of the belt, so that the safety belt has higher durability and safety while ensuring the visual effect.

[0011] Preferably, the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate is 1:0.15:(0.5-1).

[0012] The modified mesoporous silica prepared according to the above mass ratio can effectively improve the visual effect and durability of the safety belt.

[0013] Preferably, the preparation raw material further comprises light diffusion microspheres.

[0014] The introduction of light diffusion microspheres into the preparation raw material of the gradient color safety belt improves the visual performance and environmental adaptability of the product based on the principles of optical scattering and diffuse reflection; after the light diffusion microspheres are uniformly dispersed in the belt or the color optimization finishing agent, they can refract and scatter the incident light multiple times due to the difference in refractive index between the microspheres and the base material, avoiding direct reflection of light to form dazzling reflections or local highlights, so that the belt surface presents a soft and uniform luster effect, ensuring the clarity and fullness of the gradient color; the presence of microspheres can also fill the micro defects on the belt surface, optimizing the surface flatness and assisting the camera in more stably identifying the belt pattern and wearing state, while improving the wear resistance and service life of the safety belt, achieving dual improvement of optical performance and practical function.

[0015] Preferably, the addition amount of the light diffusion microspheres is 8-12 parts.

[0016] The light diffusion microspheres added in the above mass fraction can effectively synergize with other components in the finishing agent to effectively improve the optical performance and durability of the safety belt.

[0017] Preferably, the light diffusion microspheres are prepared by modification treatment using the following steps: The light diffusion microspheres are added to the hydrolysate of gamma-glycidoxypropyltrimethoxysilane, heated and stirred to react, and after reaction, centrifuged, washed, and dried to obtain modified light diffusion microspheres.

[0018] The methoxy groups of the gamma-glycidoxypropyltrimethoxysilane are converted into silanol groups, which condense with the hydroxyl groups on the surface of the light diffusion microspheres to form strong siloxane bonds, and the epoxy groups are grafted to the surface of the microspheres; the epoxy groups have high reactivity and can interact with components such as amino-modified mesoporous silica, silicone softener, etc. in the color optimization finishing agent to form a stable three-dimensional network structure, enhancing the dispersion stability and binding fastness of the microspheres in the belt, avoiding the shedding of microspheres due to friction or washing, and continuously ensuring the optical performance; the compatibility of the modified microspheres with the fibers of the belt is improved, reducing the agglomeration of microspheres and ensuring the uniformity of light scattering, making the gradient color belt present a softer and more delicate diffuse reflection effect, reducing glare interference in strong light, enhancing visibility in weak light, and improving the wear resistance and anti-aging properties of the belt surface, further optimizing the recognition effect of the camera on the safety belt and the overall performance of the product.

[0019] Preferably, the ultraviolet absorber includes a benzotriazole ultraviolet absorber and a hindered amine ultraviolet absorber.

[0020] Preferably, the color fixing agent includes a quaternary ammonium salt color fixing agent.

[0021] In a second aspect, the present application provides a production process of a color-bright gradient color safety belt, which adopts the following technical scheme: A production process of a color-bright gradient color safety belt, comprising the following steps: S1, weaving: weaving with two or more yarns of different colors, cooperating with different patterns, and different weaving methods to obtain a gradient color belt; S2, surface treatment: removing impurities on the surface of the gradient color belt and performing surface leveling treatment to obtain a treated belt; S3, color optimization: dipping the treated belt in a color optimization finishing agent, washing and fixing the color, cold setting, drying after treatment, packaging and storing to obtain a color-bright gradient color safety belt.

[0022] The weaving stage adopts multi-color yarn weaving, and the natural transition gradient color effect is given to the belt from the source by accurately controlling the yarn ratio and weaving process. The surface treatment process removes impurities and flattens the surface, not only eliminating defects such as hairiness and wrinkles generated during weaving to improve the surface smoothness of the belt, but also laying a foundation for subsequent color optimization and ensuring uniform penetration of the finishing agent. In the color optimization link, the padding process allows the finishing agent containing functional components such as nano-dispersed dyes, modified mesoporous silica, and light diffusion microspheres to fully adhere to the belt fibers, and the water washing and fixing effectively remove the floating color to avoid color bleeding and color fastness decline caused by dye migration. Cold water setting uses the principle of thermal expansion and cold contraction of fibers to quickly shrink the fiber structure, eliminate internal stress, and enhance the dimensional stability of the fabric. Finally, after drying treatment, the fixing agent in the finishing agent and the dye undergo cross-linking reaction, and the modified mesoporous silica and light diffusion microspheres cooperate to improve the color brightness and optical performance. Each step is linked together, and the final gradient color safety belt has the advantages of clear and full color, high color fastness, excellent optical performance, and stable structure, meeting the needs of automatic recognition of cameras while ensuring safety protection function and durability.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The optical synergistic layer constructed by nano-dispersed dyes and mesoporous silica improves the visual resolution of the safety belt in complex environments. The nano-dye penetrates the fiber deeply after being anchored by the mesoporous carrier, forming a high-saturation, natural-transition gradient color belt. The combination of ultraviolet absorbers and fluorescent brightening agents inhibits photodegradation and enhances the intensity of reflected light in specific wavebands, allowing the belt to maintain bright and stable spectral characteristics in strong light, rain, and other scenes. The organic silicone softener reduces surface hair interference and reduces the impact of dust shading. Compared to the traditional single-color safety belt, which is prone to color mixing and fading, this scheme enhances color fastness and dynamically adapts to the spectrum, making the gradient color safety belt always form a high contrast difference with the background, improving the image capture accuracy of road cameras, and reducing the false detection rate of non-wearing safety belts.

[0024] 2.3-aminopropyltriethoxysilane is condensed with the surface hydroxyl groups of mesoporous silica to form an amino-modified layer, and zinc nitrate is hydrolyzed to generate zinc ions, which are embedded in the pores and on the surface of mesoporous silica through chemical bonding or physical adsorption. After calcination, the zinc ions are converted into zinc oxide nanoparticles, which are uniformly loaded on the surface and pore structure of mesoporous silica and synergistically act with the amino-modified layer. The zinc oxide nanoparticles have excellent photocatalytic and ultraviolet shielding properties, which can synergistically enhance the absorption and scattering ability of ultraviolet absorbers to reduce the risk of dye photodegradation and improve the lightfastness of the dye. The composite structure of amino and zinc oxide significantly enhances the affinity of mesoporous silica for nanodispersed dyes. The amino groups adsorb dye anions through electrostatic interaction, and the zinc oxide forms hydrogen bonds with the dye through surface hydroxyl groups, further improving the dye loading capacity and uniformity, making the color of the gradient color safety belt more bright and full, and the transition smoother. In addition, the rigid support of zinc oxide nanoparticles and the flexible combination of the amino layer optimize the microstructure of the belt surface, enhance the wear resistance and the breaking strength of the belt, so that the safety belt has higher durability and safety while ensuring the visual effect.

[0025] 3. The methoxy groups of γ-glycidoxypropyltrimethoxysilane are converted into silanol groups, which condense with the hydroxyl groups on the surface of the light diffusion microspheres to form strong siloxane bonds, and the epoxy groups are grafted to the surface of the microspheres. The epoxy groups have high reactivity and can interact with components such as amino-modified mesoporous silica and silicone softener in the color optimization finish, forming a stable three-dimensional network structure, enhancing the dispersion stability and bonding strength of the microspheres in the belt, and avoiding the shedding of microspheres due to friction or washing, thereby continuously ensuring the optical performance. The compatibility of the modified microspheres with the belt fibers is improved, the microsphere aggregation phenomenon is reduced, the uniformity of light scattering is ensured, the gradient color belt presents a softer and more delicate diffuse reflection effect, the glare interference is reduced in strong light, the visibility is enhanced in weak light, and the wear resistance and anti-aging properties of the belt surface are improved, further optimizing the recognition effect of the camera on the safety belt and the comprehensive performance of the product. DETAILED DESCRIPTION

[0026] The present application discloses a color-bright gradient color safety belt and its production process. The raw materials used in the present application can be obtained through commercial raw materials, except for special instructions. The present application is further described in detail in conjunction with the following examples: Raw material description: nanodispersed dyes are LCP type dye, purchased from Shanghai Dongmei Chemical Co., Ltd., UV-326 purchased from Tianjin Lianlong New Material Co., Ltd., Tinuvin 770 purchased from Kaiming Plastic (Dongguan) Co., Ltd., mesoporous silica with product number 101014, purchased from Jiangsu Xianfeng Nanometer Material Technology Co., Ltd., cetylpyridinium chloride (CAS number: 123-03-5), HY E1250 purchased from Yangzhou Hongyuan New Material Co., Ltd., Clariant OB-1 purchased from Xuzhou Clariant Building Material Co., Ltd., sodium citrate (CAS number: 68-04-2), Scourist NO-1 purchased from Shanghai Wangjie Trade Co., Ltd., 3-aminopropyl triethoxysilane (CAS number: 919-30-2), nano zinc oxide purchased from Zhejiang Zhitiannan Micro New Material Co., Ltd., light diffusion microspheres with product number PMMA and particle size of 3 μm, purchased from Shenzhen Heyuanyuese Plastic Pigment Auxiliary Co., Ltd., γ-glycidoxypropyltrimethoxysilane (CAS number: 2530-83-8).

[0027] Example 1 Preparation of color-optimized finishing agent 20 parts of nano-dispersed dye, 10 parts of ultraviolet absorber, 5 parts of mesoporous silica, 15 parts of fixing agent, 5 parts of silicone softener, 2 parts of fluorescent whitening agent, 1 part of pH buffer, 30 parts of solvent were weighed; the ultraviolet absorber was UV-326 and Tinuvin 770 in a mass ratio of 1:1, the particle size of the mesoporous silica was 80 nm, the fixing agent was cetylpyridinium chloride, the silicone softener was HY E1250, the fluorescent whitening agent was Clariant OB-1, the pH buffer was sodium citrate, and the solvent was deionized water.

[0028] Deionized water was added to the reaction kettle, heated to 60°C, and then the pH buffer was added. After stirring and dissolving at a speed of 200 rpm, the nano-dispersed dye, ultraviolet absorber and mesoporous silica were added, and dispersed at a speed of 1200 rpm for 20 min. After cooling to 45°C, the quaternary ammonium salt fixing agent was added, and stirred at a speed of 600 rpm for 20 min. Then the silicone softener and fluorescent whitening agent were added, and ultrasonic treatment was performed for 30 min. After filtration through a 5 μm filter screen, the color-optimized finishing agent was obtained.

[0029] Preparation of color-bright gradient color safety belt S1, weaving: weaving with two or more different colored yarns, cooperating with different patterns, and different weaving methods to obtain a gradient color woven belt; S2, surface treatment: using plasma cleaning to remove impurities on the surface of the gradient color woven belt, treatment power 300 W, volume ratio of argon to oxygen 19:1, treatment for 3 min, then performing surface smoothing treatment by nano-calendering, and treating at 120°C, 8 MPa and a speed of 2 m / min to obtain the treated woven belt. S3, color optimization: the treated tape is introduced into a padding machine, and the tape is immersed in a color optimization finishing agent with a bath ratio of 1:15, padding for 5 min, squeezed by a roller, the pick-up is controlled at 80%, the roller pressure is 1.5 MPa, the padded tape is passed through a 30°C water washing tank, and is treated by overflow rinsing for 5 min with a bath ratio of 1:15, then is subjected to soaping treatment, is immersed in a 60°C aqueous solution containing 2 g / L of a non-ionic soaping agent Scourist NO-1, with a bath ratio of 1:10, for 10 min, and is rinsed with clean water until the effluent is clear; the rinsed tape is immersed in 10°C water for 5 min, is lightly pressed (pressure 0.5 MPa) by a roller to remove excess water, the pick-up is controlled at 60%, is pre-dried at 70°C for 3 min, is baked at 170°C for 5 min, is cut after cooling, is vacuum-packed with a moisture-proof plastic film, and is stored in an environment of 20°C and a relative humidity of 50%, to obtain a safety belt with bright and gradient colors.

[0030] In the weaving step, the gradient part is formed by using yarns with different colors in color contrast, i.e., the warp yarns can be of the same color or different colors, and the weft yarns can be of the same color or different colors; a sequential and gradient weaving method is used, the pattern is 1 over 4 under, 2 / 3 gradient to 3 / 2 and 4 over 1 under, and extended structures 7 / 1, 6 / 2, 5 / 3, etc.; the selvedge and the cloth edge are woven by using 2 / 2, 1 / 1 or a mixture of the two weaving methods, and each edge has at least 4-8 edge yarns; double lock thread is used to weave the edge of the tape to ensure the firmness of the tape and prevent the edge from loosening and fraying; a single or double weft structure is used, and when the double weft is woven, one of the wefts is a polyester multi-hole yarn and the other is a single-hole yarn, or both wefts are multi-hole yarns.

[0031] Example 2 Preparation of color optimization finishing agent 30 parts of nano-dispersed dye, 15 parts of ultraviolet absorber, 10 parts of mesoporous silica, 20 parts of fixing agent, 8 parts of silicone softener, 4 parts of fluorescent whitening agent, 2 parts of pH buffer, and 40 parts of solvent are weighed; the ultraviolet absorber is UV-326 and Tinuvin 770 in a mass ratio of 1:1, the particle size of the mesoporous silica is 80 nm, the fixing agent is chlorinated cetylpyridine, the silicone softener is HY E1250, the fluorescent whitening agent is Clariant OB-1, the pH buffer is sodium citrate, and the solvent is deionized water.

[0032] Deionized water was added to the reaction kettle, heated to 60°C, then pH buffer was added, stirred at 200 rpm to dissolve, then nano-dispersed dye, UV absorber and mesoporous silica were added, dispersed at 1200 rpm for 20 min, cooled to 45°C, then quaternary ammonium salt fixing agent was added, stirred at 600 rpm for 20 min, then silicone softener and fluorescent whitening agent were added, ultrasonic for 30 min, filtered through a 5 μm filter screen to obtain a color-optimized finishing agent.

[0033] Preparation of a color-bright gradient color safety belt S1, weaving: weaving with two or more different colored yarns, combining different patterns, and different weaving methods to obtain a gradient color woven belt; S2, surface treatment: using plasma cleaning to remove impurities on the surface of the gradient color woven belt, treatment power 300 W, volume ratio of argon to oxygen 19:1, treatment for 3 min, then surface smoothing treatment by nano-polishing, treatment at 120°C, 8 MPa, speed 2 m / min to obtain the treated woven belt; S3, color optimization: introducing the treated woven belt into a padding machine, immersing the woven belt in the color-optimized finishing agent, bath ratio 1:15, padding time 5 min, controlling the belt liquid rate to 80% by roller extrusion, roller pressure 1.5 MPa, immersing the padded woven belt in a 30°C water washing tank, using overflow rinsing method with bath ratio 1:15 for 5 min, then soaping treatment, immersing in a 60°C water solution containing 2 g / L non-ionic soaping agent Scourist NO-1, bath ratio 1:10, treatment for 10 min, rinsing with clean water until the effluent is clear; immersing the washed woven belt in 10°C water for 5 min, removing excess water by roller light pressing (pressure 0.5 MPa), controlling the belt liquid rate to 60%, pre-drying at 70°C for 3 min, baking at 170°C for 5 min, cooling, cutting, vacuum packaging with moisture-proof plastic film, and storing in an environment of 20°C, relative humidity 50% to obtain a color-bright gradient color safety belt.

[0034] The gradual change part in the weaving step is by using yarns with different colors in color contrast, i.e., the warp yarns can be of the same color or different colors; similarly, the weft yarns can be of the same color or different colors; by using a gradual change weaving method, the pattern is 1 over 4 under, 2 / 3 gradually changes to 3 / 2 and 4 over 1 under, and extended structures 7 / 1, 6 / 2, 5 / 3, etc.; the selvedge and the fabric edge are woven by using 2 / 2, 1 / 1 or a mixture of the two weaving methods, and each edge has at least 4-8 edge yarns; the edge selvedge weaving method is performed by using double lock thread to ensure the firmness of the woven tape and prevent the edge from loosening and dispersing; single or double weft yarn structure is used, and when double weft yarns are used, one of them is polyester multi-hole yarn and the other is single-hole yarn, or both wefts are multi-hole yarn structure.

[0035] Example 3 Preparation of color optimization finishing agent 25 parts of nano-dispersed dye, 12.5 parts of ultraviolet absorber, 7.5 parts of mesoporous silica, 17.5 parts of fixing agent, 6.5 parts of silicone softener, 3 parts of fluorescent whitening agent, 1.5 parts of pH buffer, 35 parts of solvent; the ultraviolet absorber is UV-326 and Tinuvin 770 in a mass ratio of 1:1, the particle size of the mesoporous silica is 80 nm, the fixing agent is chlorinated hexadecyl pyridine, the silicone softener is HY E1250, the fluorescent whitening agent is Clariant OB-1, the pH buffer is sodium citrate, and the solvent is deionized water.

[0036] Deionized water was added to the reaction kettle, heated to 60°C, and then the pH buffer was added. After stirring and dissolving at a speed of 200 rpm, nano-dispersed dye, ultraviolet absorber and mesoporous silica were added, and dispersed at a speed of 1200 rpm for 20 min. After cooling to 45°C, quaternary ammonium salt fixing agent was added, and stirred at a speed of 600 rpm for 20 min. Then, silicone softener and fluorescent whitening agent were added, and ultrasonic treatment was performed for 30 min. After filtering through a 5 μm filter, a color optimization finishing agent was obtained.

[0037] Preparation of color-bright gradual change color safety belt S1, weaving: weaving with two or more different colored yarns, cooperating with different patterns and different weaving methods to obtain a gradual change color woven tape; S2, surface treatment: using plasma cleaning to remove impurities on the surface of the gradual change color woven tape, treatment power 300 W, volume ratio of argon to oxygen 19:1, treatment for 3 min, then performing surface smoothing treatment by nano-calendering, treatment at 120°C, 8 MPa and a speed of 2 m / min to obtain a treated woven tape; S3, color optimization: the treated tape is introduced into a padding machine, and the tape is immersed in a color optimization finishing agent with a bath ratio of 1:15, padding time of 5 min, extrusion by a roller, control of tape liquid rate of 80%, roller pressure of 1.5 MPa, the padded tape is passed through a 30°C water washing tank, and is treated by overflow rinsing for 5 min with a bath ratio of 1:15, then is subjected to soaping treatment, immersed in a 60°C aqueous solution containing 2 g / L of non-ionic soaping agent Scourist NO-1, bath ratio of 1:10, treatment time of 10 min, rinsed with clean water until the effluent is clear; the rinsed tape is immersed in 10°C water, soaked for 5 min, and lightly pressed (pressure 0.5 MPa) by a roller to remove excess water, control of tape liquid rate at 60%, pre-dried at 70°C for 3 min, and baked at 170°C for 5 min, and then cut, vacuum packaged with moisture-proof plastic film, and stored in an environment of 20°C and relative humidity of 50% to obtain a safety belt with bright and gradual color.

[0038] In the weaving step, the gradual change part is formed by using yarns with different colors in color contrast, i.e., the warp yarns can be of the same color or different colors, and the weft yarns can be of the same color or different colors; the gradual change is formed by using a sequential change weaving method, and the weaves are 1 over 4 under, 2 / 3 gradually changing to 3 / 2 and 4 over 1 under, and extended structures 7 / 1, 6 / 2, 5 / 3, etc.; the selvedge and the cloth edge are formed by using 2 / 2, 1 / 1 or a mixture of the two weaving methods, and each edge has at least 4-8 edge yarns; double lock thread is used to form the edge selvedge of the tape to ensure the strength of the tape and prevent the edge from being loose and scattered; and single or double weft yarn structure is used, and in the double weft weaving, one of the weft yarns is a polyester multi-hole yarn and the other is a single-hole yarn, or both weft yarns are multi-hole yarns.

[0039] Example 4 Example 4 is based on Example 3, and the difference between Example 4 and Example 3 is that the nano-silica in Example 4 is modified, and is prepared by the following steps: Mesoporous silica and 3-aminopropyl triethoxysilane are mixed into an aqueous ethanol solution (ethanol and water in a volume ratio of 9:1) to form a dispersion with a mass percentage of 10%, the mass ratio of mesoporous silica to 3-aminopropyl triethoxysilane is 1:0.15, 0.1 mol / L hydrochloric acid aqueous solution is used to adjust the pH to 4.5, and the reaction is stirred at 60°C and 200 rpm for 6 h, then washed by centrifugation with deionized water, and dried at 60°C under vacuum to obtain modified mesoporous silica.

[0040] Example 5 Example 5 is based on Example 4, and the difference between Example 5 and Example 4 is that the raw materials for preparing the modified mesoporous silica in Example 5 further include zinc nitrate, and are prepared by the following steps: The mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate were mixed into an aqueous ethanol solution (volume ratio of ethanol to water was 9:1) to prepare a dispersion with a mass percentage of 10%, the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate was 1:0.15:0.5, the pH was adjusted to 4.5 using 0.1 mol / L hydrochloric acid solution, the reaction was stirred at 200 rpm for 6 h at 60°C, after centrifugal washing with anhydrous ethanol, drying at 100°C, calcination at 500°C for 4 h, and grinding, the modified mesoporous silica was obtained.

[0041] Example 6 Example 6 is based on Example 5, the only difference between Example 6 and Example 5 is that the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate in Example 6 is 1:0.15:1.

[0042] Example 7 Example 7 is based on Example 5, the only difference between Example 7 and Example 5 is that the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate in Example 7 is 1:0.15:0.75.

[0043] Example 8 Example 8 is based on Example 5, the only difference between Example 8 and Example 5 is that the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate in Example 8 is 1:0.15:0.25.

[0044] Example 9 Example 9 is based on Example 5, the only difference between Example 9 and Example 5 is that the mass ratio of mesoporous silica, 3-aminopropyl triethoxysilane and zinc nitrate in Example 9 is 1:0.15:1.5.

[0045] Example 10 Example 10 is based on Example 3, the only difference between Example 10 and Example 3 is that the mesoporous silica in Example 10 is replaced by an equal amount of nano-zinc oxide with a particle size of 50 nm.

[0046] Example 11 Example 11 is based on Example 3, the only difference between Example 11 and Example 3 is that the preparation raw materials of the color optimization finish in Example 11 also include 8 parts of light diffusion microspheres.

[0047] Preparation of color optimization finish 25 parts of nano-dispersed dye, 12.5 parts of ultraviolet absorber, 7.5 parts of mesoporous silica, 17.5 parts of fixing agent, 6.5 parts of silicone softener, 3 parts of fluorescent whitening agent, 1.5 parts of pH buffer, 35 parts of solvent, 8 parts of light diffusion microspheres; the ultraviolet absorber is UV-326 and Tinuvin 770 in a mass ratio of 1:1, the particle size of the mesoporous silica is 80 nm, the fixing agent is chlorinated cetylpyridine, the silicone softener is HY E1250, the fluorescent whitening agent is Clariant OB-1, the pH buffer is sodium citrate, and the solvent is deionized water.

[0048] Deionized water was added to the reaction kettle, and after being heated to 60°C, the pH buffer was added. After being dissolved by stirring at a speed of 200 rpm, nano-dispersed dye, ultraviolet absorber, mesoporous silica and light diffusion microspheres were added, and dispersed at a speed of 1200 rpm for 20 min. After being cooled to 45°C, the quaternary ammonium salt fixing agent was added, and stirred at a speed of 600 rpm for 20 min. Then, the silicone softener and the fluorescent whitening agent were added, and ultrasonic treatment was performed for 30 min. After being filtered through a 5 μm filter screen, a color optimization finish was obtained.

[0049] Example 12 Example 12 is based on Example 11, and the difference between Example 12 and Example 11 is only that the raw materials for preparing the color optimization finish in Example 12 further include 12 parts of light diffusion microspheres.

[0050] Example 13 Example 13 is based on Example 11, and the difference between Example 13 and Example 11 is only that the raw materials for preparing the color optimization finish in Example 13 further include 10 parts of light diffusion microspheres.

[0051] Example 14 Example 14 is based on Example 11, and the difference between Example 14 and Example 11 is only that the raw materials for preparing the color optimization finish in Example 14 further include 5 parts of light diffusion microspheres.

[0052] Example 15 Example 15 is based on Example 11, and the difference between Example 15 and Example 11 is only that the raw materials for preparing the color optimization finish in Example 15 further include 15 parts of light diffusion microspheres.

[0053] Example 16 Example 16 is based on Example 11, and the difference between Example 16 and Example 11 is only that the light diffusion microspheres in Example 16 are modified by the following steps: Mixing γ-glycidoxypropyltrimethoxysilane, ethanol and water according to a mass ratio of 1:8:1, adjusting pH to 4 with glacial acetic acid, hydrolyzing at 60℃ for 2h with stirring at a speed of 200rpm to obtain a γ-glycidoxypropyltrimethoxysilane hydrolysate; adding light diffusion microspheres to the γ-glycidoxypropyltrimethoxysilane hydrolysate, solid-liquid ratio 5:1, reacting at 70℃ for 6h with stirring at a speed of 200rpm, centrifuging after the reaction, washing with anhydrous ethanol, and vacuum drying at 60℃ to obtain modified light diffusion microspheres.

[0054] Comparative Example 1 Comparative Example 1 is based on Example 3, and the only difference between Comparative Example 1 and Example 3 is that no mesoporous silica is added in Comparative Example 1.

[0055] Preparation of color optimization finish Weighing 25 parts of nano-dispersed dye, 12.5 parts of ultraviolet absorber, 17.5 parts of fixing agent, 6.5 parts of silicone softener, 3 parts of fluorescent whitening agent, 1.5 parts of pH buffer, 35 parts of solvent; the ultraviolet absorber is UV-326 and Tinuvin 770 in a mass ratio of 1:1, the fixing agent is cetylpyridinium chloride, the silicone softener is HY E1250, the fluorescent whitening agent is Clariant OB-1, the pH buffer is sodium citrate, and the solvent is deionized water.

[0056] Adding deionized water to the reaction kettle, heating to 60℃, then adding the pH buffer, dissolving with stirring at a speed of 200rpm, then adding the nano-dispersed dye and the ultraviolet absorber, dispersing for 20min at a speed of 1200rpm, cooling to 45℃, then adding the quaternary ammonium salt fixing agent, stirring at a speed of 600rpm for 20min, then adding the silicone softener and the fluorescent whitening agent, ultrasonicating for 30min, filtering through a 5μm filter screen to obtain the color optimization finish.

[0057] Performance test (1) Selecting 《GB / T 3920-2008 Textiles Color Fastness Test Resistance to Rubbing Color Fastness》 and 《GB / T 8427-2019 Textiles Color Fastness Test Resistance to Artificial Light Color Fastness: Xenon Arc》 as standards, testing the dry and wet rubbing color fastness and the light fastness of the sample, and recording the results in Table 1.

[0058] (2) Selecting 《GB 14166-2013 Safety Belts, Restraint Systems, Child Restraint Systems and ISOFIX Child Restraint Systems for Occupants of Motor Vehicles》 as a standard, cutting 5 safety belt webbing samples with a size of 50mm×200mm, clamping the distance between the clamps to 200mm, stretching to break at a speed of 100mm / min, recording the maximum load, testing each sample three times, taking the average value after measurement, and recording the results in Table 1.

[0059] Table 1: Test results of color stability and breaking strength of the safety belt As can be seen from Table 1, the dry rubbing color fastness of Examples 1-3 is 4-5, the wet rubbing color fastness is greater than 4, the light fastness is 6-7, and the breaking strength is greater than 22.3 kN, so it can be seen that the safety belt prepared in the application has good color effect, color fastness and breaking strength, which can meet the demand of automatic recognition of the camera while ensuring the safety protection function and durability.

[0060] As can be seen from Table 1, the difference between Examples 4-10 and Example 3 is only that: in Example 4, the nano-silicon dioxide is modified by amino silane, which improves the compatibility and performance; compared with Example 4, Examples 5-9 further add zinc nitrate during modification, and through the synergistic effect of mesoporous silica, amino silane and zinc oxide, the visual effect, color fastness, strength and durability are improved; in Example 10, mesoporous silica is replaced by nano-zinc oxide, and the performance of single zinc nitrate is worse than that of mesoporous silica, and the performance is decreased.

[0061] As can be seen from Table 1, the difference between Examples 11-16 and Example 3 is only that: in Examples 11-13, light diffusion microspheres within a limited range are added, which effectively plays a synergistic improvement role between components, and the performance is obviously improved; the performance improvement effect of Examples 14 and 15 is slightly decreased due to the destruction of the limited ratio, and Example 16 further modifies the light diffusion microspheres to improve the compatibility, thereby improving the optical effect, color fastness and strength of the safety belt.

[0062] As can be seen from Table 1, the difference between Comparative Example 1 and Example 3 is only that: no mesoporous silica is added in Comparative Example 1, and compared with Example 3, the performance of Comparative Example 1 is obviously decreased; this is because without adding mesoporous silica, the dye is aggregated on the surface of the fiber, lacking the reinforcing effect, and the color fastness and strength are decreased.

[0063] The specific embodiments are only an explanation of the application, and are not a limitation of the application. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the application. The technical scope of the application is not limited to the contents of the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A color-bright, gradient color seat belt characterized by: The color-optimizing finishing agent comprises the following components by mass fraction: Nano-dispersed dye 20-30 parts UV absorber 10-15 parts Mesoporous silica 5-10 parts Fixing agent 15-20 parts Silicone softener 5-8 parts Optical brightener 2-4 parts pH buffer 1-2 parts Solvent 30-40 parts.

2. A vibrant, gradient color seat belt according to claim 1, wherein: The nano-silica is modified by the following steps: Mix the mesoporous silica and 3-aminopropyl triethoxysilane into the solvent, adjust the pH to be acidic, heat and stir to react, centrifuge, wash, and dry to obtain the modified mesoporous silica.

3. A vibrant, gradient color seat belt according to claim 2, wherein: The preparation raw materials of the modified mesoporous silica further comprise zinc nitrate, and the modified mesoporous silica is prepared by the following steps: Mix the mesoporous silica, 3-aminopropyl triethoxysilane, and zinc nitrate into the solvent to obtain a dispersion, adjust the pH to be acidic, heat and stir to react, centrifuge, wash, dry, calcine, and grind after the reaction to obtain the modified mesoporous silica.

4. A vibrant, gradient color seat belt according to claim 3, wherein: The mass ratio of the mesoporous silica, 3-aminopropyl triethoxysilane, and zinc nitrate is 1:0.15:(0.5-1).

5. A vibrant, gradient color seat belt according to claim 1, wherein: The preparation raw materials further comprise light diffusion microspheres.

6. A vibrant, gradient color seat belt according to claim 5, wherein: The addition amount of the light diffusion microspheres is 8-12 parts.

7. A vibrant, gradient color seat belt according to claim 6, wherein: The light diffusion microspheres are modified by the following steps: Add the light diffusion microspheres into the γ-glycidyl ether oxypropyl trimethoxysilane hydrolysate, heat and stir to react, centrifuge, wash, and dry after the reaction to obtain the modified light diffusion microspheres.

8. A vibrant, gradient color seat belt according to claim 1, wherein: The UV absorber comprises a benzotriazole UV absorber and a hindered amine UV absorber.

9. A vibrant, gradient color seat belt according to claim 1, wherein: The fixing agent comprises a quaternary ammonium salt fixing agent.

10. A production process applied to the color-bright, gradient color safety belt according to any one of claims 1 to 9, characterized by: The method comprises the following steps: S1, weaving: weaving with two or more yarns of different colors, cooperating with different patterns, and different textile methods to obtain the gradient color woven tape; S2, surface treatment: removing impurities on the surface of the gradient color woven tape and performing surface leveling treatment to obtain the treated woven tape; S3, color optimization: immersing the treated woven tape in the color-optimizing finishing agent, washing, fixing, and cold setting, drying after the treatment, packaging and storage to obtain the gradient color safety belt with bright colors.

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