CN108486681B - Sunlight fabric fiber for building sunshade - Google Patents
Sunlight fabric fiber for building sunshade Download PDFInfo
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- CN108486681B CN108486681B CN201810306450.1A CN201810306450A CN108486681B CN 108486681 B CN108486681 B CN 108486681B CN 201810306450 A CN201810306450 A CN 201810306450A CN 108486681 B CN108486681 B CN 108486681B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a sunlight fabric fiber which comprises a core layer and a skin layer, wherein the core layer is formed by polyester fiber, and the skin layer is formed by a PVC composite material; the PVC composite includes a phosphorus nitrogen flame retardant. The PVC composite further includes an ethylene vinyl acetate copolymer. The invention utilizes the principle of synergy of the phosphorus-nitrogen flame retardant and the ethylene-vinyl acetate copolymer, and has good flame retardant property and better mechanical property. In addition, the antibacterial property, the ultraviolet resistance and the color fastness can also meet the market demand, and the sunlight fabric is suitable for building sun shading and has wide application prospect.
Description
Technical Field
The invention belongs to the field of textile materials. In particular, the invention relates to a sunlight fabric fiber for building sun shading.
Background
In the field of building sun shading, sunlight fabrics are a class of products which are widely applied. As the name implies, the sunlight fabric is a functional auxiliary fabric for shielding sunlight and ultraviolet rays. According to different subdivision functions, some sunlight fabrics are concentrated on flame retardant performance, some sunlight fabrics are concentrated on antibacterial performance, some sunlight fabrics are concentrated on ultraviolet resistance performance, some sunlight fabrics are concentrated on color fastness performance, and some sunlight fabrics are concentrated on environmental protection performance. With the stricter national laws and regulations on energy conservation and emission reduction, the market has greater and greater demand for the sunlight fabric with high flame retardant property.
The sunlight fabric is a textile fiber cloth with regular patterns formed by mutually weaving sunlight fabric fibers. According to different fiber material types, the fiber material is divided into two types, namely polyester fiber and glass fiber coated by PVC. The former dominates the market for cost reasons. In the PVC-coated polyester fiber, since PVC has limited flame retardant properties and is liable to release harmful chlorine-containing gases, a flame retardant is usually added to improve the flame retardant properties.
Among the flame retardants, metal hydroxides are the most commonly used halogen-free flame retardants, are inexpensive and readily available, and are environmentally friendly. Common metal hydroxide flame retardants are both magnesium hydroxide and aluminum hydroxide. However, the flame retardant efficiency of the metal hydroxide is low, and 60-70 wt% of the metal hydroxide needs to be added to obtain a satisfactory flame retardant effect. On the other hand, when a large amount of metal hydroxide is filled, the compatibility with the matrix resin material is extremely poor, and the dispersion in the matrix resin is difficult, which seriously deteriorates the mechanical properties of the material.
Many efforts have been made to improve the above-mentioned drawbacks. For example, chinese patent application CN201110307227.7 relates to a high-purity magnesium hydroxide flame retardant, which is prepared by adding a composite precipitant prepared by mixing calcium oxide, magnesium oxide, sodium hydroxide and water into a solution containing magnesium ions, and controlling reasonable process conditions to obtain the magnesium hydroxide flame retardant with high purity, wherein the purity of the flame retardant is greater than or equal to 99.0%. However, although this patent application describes that the magnesium hydroxide flame retardant can be used for PVC resin, the inventors found that the use of the above flame retardant can only reduce the amount of the flame retardant to the range of 40 to 60 wt% of the PVC base resin, and cannot improve the mechanical properties of the final material.
The Chinese patent application CN201210539794.X relates to a high-flame-retardant sunlight fabric. According to the application, magnesium hydroxide is coated with zinc stannate by adopting a unique dispersion coating treatment technology, and the obtained high-flame-retardant sunlight fabric meets the fire-fighting requirement and reaches the relevant flame-retardant test standards at home and abroad. The usage amount of the flame retardant is about 20 wt% of the PVC matrix resin, and the purpose of high flame retardance is achieved by using a very small amount of the flame retardant. However, the mechanical properties of the resulting high flame retardant solar fabric fibers are still unsatisfactory.
Therefore, technical improvements aiming at the above-mentioned drawbacks are urgently required.
Disclosure of Invention
Problems to be solved by the invention
Aiming at the defects, the invention provides the sunlight fabric fiber which is used for building sunshade and has high flame retardant property and better mechanical property.
Means for solving the problems
The invention provides a sunlight fabric fiber which comprises a core layer and a skin layer, wherein the core layer is formed by polyester fibers, and the skin layer is formed by a PVC composite material; the PVC composite material is characterized by comprising a phosphorus-nitrogen flame retardant.
The sunlight fabric fiber is characterized in that the phosphorus-nitrogen flame retardant is a composition of melamine phosphate and pentaerythritol.
The sunlight fabric fiber is characterized in that the weight ratio of the melamine phosphate to the pentaerythritol is 100 (30-60).
The sunlight fabric fiber is characterized in that the addition amount of the phosphorus-nitrogen flame retardant is 16-32wt% based on the weight of PVC matrix resin.
The sunlight fabric fiber is characterized in that the PVC composite material further comprises ethylene-vinyl acetate copolymer.
The sunlight fabric fiber is characterized in that the vinyl acetate content of the ethylene-vinyl acetate copolymer is 18-28wt%, and the melt index is 8-25g/10 min.
The sunlight fabric fiber is characterized in that the addition amount of the ethylene-vinyl acetate copolymer is 6-12wt% based on the weight of PVC matrix resin.
The sunlight fabric fiber is characterized in that the weight ratio of the skin layer PVC composite material to the core layer polyester fiber is (60-80) to (40-20).
The sunlight fabric fiber is characterized in that the specification of the polyester fiber is 400-800 dtex.
The solar fabric fiber according to the invention is characterized in that the PVC composite optionally comprises an auxiliary agent.
The sun fabric fiber according to the invention is characterized in that the auxiliary agent is selected from fillers, pigments, compatibilizers, stabilizers, anti-uv agents, antistatic agents, antioxidants, processing aids or mixtures thereof.
The invention also provides the application of the sunlight fabric fiber used as building sunshade.
ADVANTAGEOUS EFFECTS OF INVENTION
The sunlight fabric fiber provided by the invention utilizes the synergistic principle of the phosphorus-nitrogen flame retardant and the ethylene-vinyl acetate copolymer, and has good flame retardant property and better mechanical property. In addition, the antibacterial property, the ultraviolet resistance and the color fastness can also meet the market demand, and the sunlight fabric is suitable for building sun shading and has wide application prospect.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the contents of the present invention, and those equivalents may fall within the scope of the present invention defined by the appended claims.
In one aspect, the present invention provides a solar fabric fiber comprising a core layer and a skin layer, wherein the core layer is formed of polyester fibers and the skin layer is formed of a PVC composite; wherein the PVC composite material comprises a phosphorus-nitrogen flame retardant.
Preferably, the PVC composite comprises a PVC base resin, a phosphorus nitrogen flame retardant and optionally additives.
As the PVC base resin, a powder form is preferable. Preferably, the PVC base resin is selected from PVC base resins having a low average degree of polymerization. The low average polymerization degree is defined as 400-1500 in the present invention. Preferably, the PVC base resin has an average degree of polymerization of 450-1200. Further, the average polymerization degree of the PVC base resin is 500-1000. Most preferably, the PVC base resin has an average degree of polymerization of 600-900.
In particular embodiments, the PVC base resin has an average degree of polymerization of 650, 700, and 810.
Preferably, the apparent density of the PVC base resin is 0.40-0.60 g/mL. Further, the apparent density of the PVC matrix resin is 0.45-0.60 g/mL. Further, the apparent density of the PVC base resin is 0.50-0.60 g/mL. Most preferably, the PVC base resin has an apparent density of 0.55 to 0.60 g/mL.
In specific embodiments, the PVC base resin has an apparent density of 0.57, 0.58, and 0.60 g/mL.
In one embodiment, the PVC base resin is from the petrochemical, Qilu division, under the trade name S-800.
Preferably, the phosphorus-nitrogen flame retardant is selected from the group consisting of melamine phosphate salts and pentaerythritol combinations. Wherein the CAS number of the melamine phosphate is 20208-95-1, and the product is from Sichuan research and design institute of fine chemistry. The pentaerythritol is from the chemical group of New Asia, Jiangsu.
Preferably, the weight ratio of the melamine phosphate to the pentaerythritol is 100 (30-60). Further, the weight ratio of the melamine phosphate to the pentaerythritol is 100 (35-55). Most preferably, the weight ratio of melamine phosphate to pentaerythritol is 100 (40-50).
In a specific embodiment, the weight ratio of melamine phosphate to pentaerythritol is 100: 45.
The phosphorus-nitrogen flame retardant is added in an amount of 16 to 32wt% based on the weight of the PVC base resin.
Preferably, the phosphorus-nitrogen flame retardant is added in an amount of 18 to 30 wt% based on the weight of the PVC base resin. Further, the phosphorus-nitrogen flame retardant is added in an amount of 20 to 28wt% based on the weight of the PVC base resin. Most preferably, the phosphorus-nitrogen flame retardant is added in an amount of 22 to 26 wt% based on the weight of the PVC base resin.
In a specific embodiment, the phosphorus-nitrogen flame retardant is added in an amount of 24 wt%, based on the weight of the PVC base resin.
As the PVC composite, Ethylene Vinyl Acetate (EVA) is further included.
Preferably, the vinyl acetate content of the ethylene-vinyl acetate copolymer is between 12 and 32wt%, and the melt index is between 6 and 40g/10 min.
Advantageously, the ethylene vinyl acetate copolymer has a vinyl acetate content of between 15 and 30% by weight and a melt index of between 7 and 30g/10 min. Most preferably, the ethylene vinyl acetate copolymer has a vinyl acetate content of between 18 and 28wt% and a melt index of between 8 and 25g/10 min.
In one embodiment, the ethylene vinyl acetate copolymer has a vinyl acetate content of 25 wt% and a melt index of 19g/10 min. More specifically, the ethylene vinyl acetate copolymer is available from dupont, usa under the trade designation EVA 350.
In another specific embodiment, the ethylene vinyl acetate copolymer has a vinyl acetate content of 18 wt% and a melt index of 8g/10 min. More specifically, the ethylene vinyl acetate copolymer is available from DuPont, USA under the trade name EVA 450.
In another specific embodiment, the ethylene vinyl acetate copolymer has a vinyl acetate content of 28wt% and a melt index of 25g/10 min. More specifically, the ethylene vinyl acetate copolymer is available from dupont, usa under the trade designation EVA 3180.
Preferably, the ethylene vinyl acetate copolymer is added in an amount of 6 to 12wt% based on the weight of the PVC base resin. Further, the ethylene vinyl acetate copolymer is added in an amount of 7 to 11 wt% based on the weight of the PVC base resin. Most preferably, the ethylene vinyl acetate copolymer is added in an amount of 8 to 10 wt% based on the weight of the PVC base resin.
In one embodiment, the ethylene vinyl acetate copolymer is added in an amount of 9 wt% based on the weight of the PVC base resin.
In the sunlight fabric fiber, the weight ratio of the skin layer PVC composite material to the core layer polyester fiber is (60-80) to (40-20).
Preferably, the weight ratio of the sheath layer PVC composite material to the core layer polyester fiber is (65-80): (35-20). Further, the weight ratio of the sheath layer PVC composite material to the core layer polyester fiber is (70-80): (30-20). Most preferably, the weight ratio of the sheath layer PVC composite material to the core layer polyester fiber is (75-80): (25-20).
In a specific embodiment, the weight ratio of the sheath layer PVC composite to the core layer polyester fiber is 78: 22.
Preferably, the specification of the polyester fiber is 400-800 dtex. Further, the specification of the polyester fiber is 500-800 dtex. Most preferably, the polyester fiber has a specification of 600-800 dtex.
In a specific embodiment, the polyester fiber has a gauge of 750 dtex.
In the solar fabric fiber of the present invention, the PVC composite may optionally further comprise an auxiliary agent. Such adjuvants include, but are not limited to, fillers, pigments, compatibilizers, stabilizers, anti-uv agents, antistatic agents, antioxidants, processing aids, or mixtures thereof, and other adjuvants that improve the mechanical properties and processability of the solar fabric fibers. These auxiliaries are all customary commercial products and are familiar to the person skilled in the art.
Preferably, the amount of the aid is 0 to 20 wt%, preferably 0 to 10 wt%, most preferably 0 to 5 wt%, based on the weight of the PVC composite of the present invention.
The solar fabric fibers of the present invention may be prepared according to methods well known in the art. Specifically, the preparation method of the solar fiber comprises two steps of PVC composite material granulation and polyester fiber coating.
The PVC composite material granulation steps are as follows: adding the PVC matrix resin, the phosphorus-nitrogen flame retardant and optional additives into a stirring device according to a certain ratio, and uniformly mixing; and adding the ethylene-vinyl acetate copolymer, and continuously stirring to obtain a uniformly dispersed PVC composite material mixture. And extruding the PVC composite material mixture by using a double-screw extruder, cooling by using a water tank, and granulating to obtain master batches of the PVC composite material.
Preferably, the process conditions for granulating the PVC composite material are as follows: the first zone is 150-; the screw speed of the main machine is 300-500rpm, and the screw speed of the feeder is 30-40 rpm.
In a specific embodiment, the process conditions for pelletizing the PVC composite are as follows: first zone 155 ℃, second zone 175 ℃, third zone 175 ℃, fourth zone 175 ℃, fifth zone 175 ℃, sixth zone 175 ℃, seventh zone 175 ℃, die head 210 ℃; the host screw speed was 400rpm and the feeder screw speed was 35 rpm.
The polyester fiber coating steps are as follows: and coating the master batch of the PVC composite material and the polyester fiber by using a single-screw extruder, cooling by using a water tank, and winding to obtain the sunlight fabric fiber.
Preferably, the process conditions of the polyester fiber coating are as follows: the head temperature is 150-.
In a specific embodiment, the process conditions for coating the polyester fiber are as follows: the head temperature was 155 ℃, the screw speed was 60rpm, and the winding speed was 120 rpm.
In another aspect, the invention provides the use of the solar fabric fiber as a building sun shade.
Examples of the present invention are described in further detail below.
Examples
Example 1
The formula of the PVC composite material is as follows: PVC S-800100 parts by weight, melamine phosphate 16.5 parts by weight, pentaerythritol 7.5 parts by weight, EVA3509 parts by weight, 527UV 0.2 parts by weight, stearic acid 2 parts by weight, soybean oil 1 part by weight, and polyethylene wax 1 part by weight.
Adding the S-800, the melamine phosphate, the pentaerythritol and other additives into a stirring device according to the proportion, and uniformly mixing at room temperature; then adding EVA350, and continuously stirring to obtain a uniformly dispersed PVC composite material mixture. And extruding the PVC composite material mixture by using a double-screw extruder. The process conditions for granulating the PVC composite material are as follows: first zone 155 ℃, second zone 175 ℃, third zone 175 ℃, fourth zone 175 ℃, fifth zone 175 ℃, sixth zone 175 ℃, seventh zone 175 ℃, die head 210 ℃; the host screw speed was 400rpm and the feeder screw speed was 35 rpm. And then, cooling by a water tank and granulating to obtain master batches of the PVC composite material.
The polyester fiber coating steps are as follows: the master batch of the PVC composite material and the industrial polyester fiber of 750dtex are coated by a single screw extruder. The weight ratio of the skin layer PVC composite material to the core layer polyester fiber is 78: 22. The process conditions for coating the polyester fiber are as follows: the head temperature was 155 ℃, the screw speed was 60rpm, and the winding speed was 120 rpm. And cooling by a water tank and then winding to obtain the sunlight fabric fiber.
Example 2
The formula of the PVC composite material is as follows: PVC S-800100 parts by weight, melamine phosphate 10 parts by weight, pentaerythritol 6 parts by weight, EVA45011 parts by weight, 527UV 0.2 parts by weight, stearic acid 2 parts by weight, soybean oil 1 part by weight, and polyethylene wax 1 part by weight.
Adding the S-800, the melamine phosphate, the pentaerythritol and other additives into a stirring device according to the proportion, and uniformly mixing at room temperature; then adding EVA450, and continuously stirring to obtain a uniformly dispersed PVC composite material mixture. And extruding the PVC composite material mixture by using a double-screw extruder. The process conditions for granulating the PVC composite material are as follows: first zone 155 ℃, second zone 175 ℃, third zone 175 ℃, fourth zone 175 ℃, fifth zone 175 ℃, sixth zone 175 ℃, seventh zone 175 ℃, die head 210 ℃; the host screw speed was 400rpm and the feeder screw speed was 35 rpm. And then, cooling by a water tank and granulating to obtain master batches of the PVC composite material.
The polyester fiber coating steps are as follows: the master batch of the PVC composite material and the industrial polyester fiber of 750dtex are coated by a single screw extruder. The weight ratio of the skin layer PVC composite material to the core layer polyester fiber is 78: 22. The process conditions for coating the polyester fiber are as follows: the head temperature was 155 ℃, the screw speed was 60rpm, and the winding speed was 120 rpm. And cooling by a water tank and then winding to obtain the sunlight fabric fiber.
Example 3
The formula of the PVC composite material is as follows: PVC S-800100 parts by weight, melamine phosphate 26.7 parts by weight, pentaerythritol 5.3 parts by weight, EVA31807 parts by weight, 527UV 0.2 parts by weight, stearic acid 2 parts by weight, soybean oil 1 part by weight, and polyethylene wax 1 part by weight.
Adding the S-800, the melamine phosphate, the pentaerythritol and other additives into a stirring device according to the proportion, and uniformly mixing at room temperature; then adding EVA3180, and continuously stirring to obtain the uniformly dispersed PVC composite material mixture. And extruding the PVC composite material mixture by using a double-screw extruder. The process conditions for granulating the PVC composite material are as follows: first zone 155 ℃, second zone 175 ℃, third zone 175 ℃, fourth zone 175 ℃, fifth zone 175 ℃, sixth zone 175 ℃, seventh zone 175 ℃, die head 210 ℃; the host screw speed was 400rpm and the feeder screw speed was 35 rpm. And then, cooling by a water tank and granulating to obtain master batches of the PVC composite material.
The polyester fiber coating steps are as follows: the master batch of the PVC composite material and the industrial polyester fiber of 750dtex are coated by a single screw extruder. The weight ratio of the skin layer PVC composite material to the core layer polyester fiber is 78: 22. The process conditions for coating the polyester fiber are as follows: the head temperature was 155 ℃, the screw speed was 60rpm, and the winding speed was 120 rpm. And cooling by a water tank and then winding to obtain the sunlight fabric fiber.
Comparative example 1
In the same manner as in example 1, 16.5 parts by weight of melamine phosphate and 7.5 parts by weight of pentaerythritol were replaced with equal amounts by weight of magnesium hydroxide powder.
Comparative example 2
In the same manner as in example 1, 16.5 parts by weight of melamine phosphate and 7.5 parts by weight of pentaerythritol were replaced with 8.3 parts by weight of melamine phosphate and 3.7 parts by weight of pentaerythritol.
Comparative example 3
In the same manner as in example 1, 16.5 parts by weight of melamine phosphate and 7.5 parts by weight of pentaerythritol were replaced with 24.8 parts by weight of melamine phosphate and 11.2 parts by weight of pentaerythritol.
Comparative example 4
In the same manner as in example 1, 16.5 parts by weight of melamine phosphate and 7.5 parts by weight of pentaerythritol were replaced with 24 parts by weight of melamine phosphate.
Comparative example 5
The same as example 1, but without the addition of EVA 350.
Comparative example 6
In the same manner as in example 1, the EVA3509 parts by weight were replaced with an equal weight of EVA3185 (vinyl acetate content: 32% by weight, melt index: 43g/10 min).
Comparative example 7
In the same manner as in example 1, the EVA3509 parts by weight was replaced with EVA3128 (vinyl acetate content 8.9 wt%, melt index 2g/10min) of the same weight.
Performance testing
Mechanical property tests were performed on the master batches of the PVC composite materials of examples 1-3 and comparative examples 1-7 and the solar fabric fiber, respectively. The former test conditions were as follows: and pressing the PVC composite material master batch into a II-type tensile sample strip according to the national standard GB/T1040.1-2006, and testing the tensile strength and the elongation at break of the II-type tensile sample strip. The latter test conditions were as follows: the length of the sunlight fabric fiber is 10cm, and the stretching speed is 50 mm/min. The strength and elongation at break were tested.
Limiting oxygen index tests were performed on master batches of the PVC composite materials of examples 1-3 and comparative examples 1-7. The size of the Limiting Oxygen Index (LOI) is in positive correlation with the flame retardant performance. The test conditions were as follows: the test is carried out according to the national standard GB/T2406-2008, the spline size is 100 multiplied by 10 multiplied by 4mm3。
The results are shown in table 1 below:
TABLE 1
The above table shows that the sunlight fabric fiber of the invention utilizes the principle of synergy of the phosphorus-nitrogen flame retardant and the ethylene-vinyl acetate copolymer, and has not only good flame retardant performance, but also good mechanical properties. Compared with comparative example 1, the flame retardant performance and mechanical performance of the sunlight fabric fiber are obviously higher than those of magnesium hydroxide with equal weight, and the aim of high flame retardance is achieved by a small amount of flame retardant. Comparative examples 2-4 show that specific amounts and compositions of phosphorus-nitrogen flame retardants focus on improving flame retardant properties, but that excessive addition can negatively impact mechanical properties. Examples 1-3 and comparative examples 5-7 show that specific ethylene vinyl acetate copolymers focus on improving mechanical properties. Without wishing to be bound by any theory, the inventors believe that the specific vinyl acetate and melt index of the ethylene vinyl acetate copolymer improves its interaction with PVC and the phosphorus nitrogen flame retardant, thereby improving mechanical properties.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (2)
1. The sunlight fabric fiber comprises a core layer and a skin layer, wherein the core layer is formed by polyester fibers, and the skin layer is formed by a PVC composite material; the PVC composite material is characterized by comprising a phosphorus-nitrogen flame retardant; the phosphorus-nitrogen flame retardant is a composition of melamine phosphate and pentaerythritol;
the PVC composite material further comprises ethylene-vinyl acetate copolymer; the vinyl acetate content of the ethylene-vinyl acetate copolymer is between 18 and 28 weight percent, and the melt index is between 8 and 25g/10 min;
the weight ratio of the melamine phosphate to the pentaerythritol is 100 (30-60);
the addition amount of the phosphorus-nitrogen flame retardant is 16-32wt% based on the weight of the PVC matrix resin;
the addition amount of the ethylene-vinyl acetate copolymer is 6-12wt% based on the weight of the PVC matrix resin;
the weight ratio of the skin layer PVC composite material to the core layer polyester fiber is (60-80) to (40-20);
the specification of the polyester fiber is 400-800 dtex.
2. Use of the solar fabric fiber of claim 1 as a sun shade for buildings.
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| CN201810306450.1A CN108486681B (en) | 2018-04-08 | 2018-04-08 | Sunlight fabric fiber for building sunshade |
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| CN201810306450.1A CN108486681B (en) | 2018-04-08 | 2018-04-08 | Sunlight fabric fiber for building sunshade |
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| CN110042528B (en) * | 2019-04-18 | 2021-04-23 | 宁波先锋新材料股份有限公司 | Sun-shading fabric and preparation method thereof |
| CN110629358A (en) * | 2019-09-19 | 2019-12-31 | 飞佛特种纺织品（宁波）有限公司 | Superfine glass fiber sunlight fabric with high oxygen index and preparation method thereof |
| CN114889259B (en) * | 2022-05-13 | 2023-09-29 | 郑州中科纺织科技有限公司 | Three-layer laminated antibacterial flame-retardant fabric and preparation process thereof |
| CN117488461B (en) * | 2023-11-03 | 2024-07-09 | 绍兴红葡萄纺织装饰品有限公司 | Sunlight fabric and manufacturing equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1408133A (en) * | 1971-08-04 | 1975-10-01 | Fenner Co Ltd J H | Fire retardant compositions |
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| CN106939095A (en) * | 2017-03-31 | 2017-07-11 | 江苏坤宇集团有限公司 | Flame-retardant compounds based on three piperazine triazine carbon forming agents |
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| US4726987A (en) * | 1987-04-03 | 1988-02-23 | Gates Formed-Fibre Products, Inc. | Fire retardant structural textile panel |
| CN202011935U (en) * | 2011-03-23 | 2011-10-19 | 台州东海塑料品制造有限公司 | Mesh with flat threads |
| CN104278525A (en) * | 2014-09-09 | 2015-01-14 | 宁波先锋新材料股份有限公司 | Sun-shading composite material with extinction and high flame-retardant effects |
| CN106939095A (en) * | 2017-03-31 | 2017-07-11 | 江苏坤宇集团有限公司 | Flame-retardant compounds based on three piperazine triazine carbon forming agents |
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| CN108486681A (en) | 2018-09-04 |
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