CN115838566B - UV (ultraviolet) curing fiber coating resin for guidance optical cable and preparation method - Google Patents

UV (ultraviolet) curing fiber coating resin for guidance optical cable and preparation method Download PDF

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CN115838566B
CN115838566B CN202211349216.XA CN202211349216A CN115838566B CN 115838566 B CN115838566 B CN 115838566B CN 202211349216 A CN202211349216 A CN 202211349216A CN 115838566 B CN115838566 B CN 115838566B
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optical cable
resin
acrylate
curing
fiber
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CN115838566A (en
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万欢
余晓梦
桂振东
崔丽云
黄星
高旭
皮亚斌
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Wuhan Changyingxin Technology Co ltd
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Abstract

The invention relates to a UV curing fiber coating resin for a guidance optical cable, which comprises the following components in percentage by weight: 40-65% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 10-20% of pure acrylate resin, 15-35% of octadecyl methacrylate, 5-20% of acrylate monomer, 3-15% of UV curable cellulose ester, 0.1-5% of vinyl tri-tert-butyl peroxy silane, 0-2% of photoinitiator and 0.01-1% of photo-curing deaeration agent, wherein the sum of all components meets 100%. The UV cured fiber coating resin adopts UV photoinitiation to rapidly cure, has no VOC emission, low odor, good wettability to glass fibers, aramid fibers, polyester fibers, polyethylene fibers, carbon fibers, high-strength blend fibers and the like, good adhesion to optical fibers and optical fiber outer protective layer materials, and excellent full-temperature mechanical properties. The guidance optical cable produced by coating the resin with the UV cured fiber has the characteristics of low loss, good microbending performance, long single length (more than 10 KM), high tensile strength (more than 160N), simple preparation process, wide use temperature range (-65-95 ℃), and the like.

Description

UV (ultraviolet) curing fiber coating resin for guidance optical cable and preparation method
Technical Field
The invention relates to UV (ultraviolet) curing fiber coating resin for a guidance optical cable and a preparation method thereof, and belongs to the field of special optical cables.
Background
The guidance optical cable is a special optical cable for carrying out guidance information transmission by utilizing optical fibers, and belongs to the most advanced wired guidance. The guided optical cable is usually positioned at the tail of the guided missile, continuously pays out the wire at the tail after the missile is launched and flown, is used for feeding back flight data, and simultaneously transmits a target image shot by the seeker camera to the launching control device, and a control instruction is transmitted to the guided missile guidance system through an optical fiber to control the missile to hit a target. The guidance cables are often required to withstand high tension, light weight, small outer diameter, and a single length of greater than 10 km.
The structure forms of the common guidance optical cable mainly comprise 3 types: aramid woven, polymer material extrusion and aramid composite enhancement; the maximum tensile force of the guidance optical cable woven by the aramid fiber and enhanced by the aramid fiber is only 8-15 kg, the production speed of the aramid fiber woven is extremely low, the efficiency is low, the woven wire needs to be frequently replaced in the production process, the production of the optical cable with a large length is not facilitated, the optical cable needs to be connected in actual use, the loss of signal transmission and the risk of fiber breakage can be increased at the joint, and the reliability of the guidance optical cable is reduced. Polymer or composite reinforced polymer material extruded fiber optic cables have lower tensile resistance and are generally only suitable for use in short-range, low-speed guidance systems.
The existing ultra-bending-resistant high-tensile-strength guidance optical cable with a special structure not only greatly improves the tensile resistance of the guidance optical cable, ensures that the guidance optical cable is not easy to break in the coiling and guiding paying-off processes of the coil, improves the reliability of the guidance optical cable, but also has the advantages of simple production process and high production efficiency, is easy to produce a long-length optical cable, and can be suitable for guidance of long-distance and high-speed flying weapons, and the specific structure is shown in figure 1.
In order to meet the requirements of rapid production, the fiber reinforcement 2 must be made of a photocurable matrix resin. At present, unsaturated polyester resin and vinyl resin are mostly adopted as resin matrix for pre-curing in the market, but because of VOC emission, low mechanical strength and relatively poor brittleness at low temperature, great microbending loss is generated when the optical cable is at low temperature (-below 50 ℃), and because the matrix resin has insufficient adhesion to the fiber and the optical fiber, the whole tensile strength and bending resistance of the guidance optical cable cannot meet the use requirement, even serious problems such as fiber scattering and fiber breakage occur, the prepreg resin can not meet the specific use requirement of the guidance optical cable. Therefore, developing a resin which is fast cured by UV, good in wettability to reinforced fibers, good in adhesive force with the optical fiber outer protective layer material and excellent in all-temperature mechanical property is a problem to be solved at present.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the UV curing fiber coating resin for the guidance optical cable aiming at the defects in the prior art. The UV curing fiber coating resin for the guidance optical cable has excellent full-temperature performance, good flexibility and good bending resistance, and has excellent adhesion to various base materials (such as reinforcing fibers, optical fibers and outer protective layer materials); in addition, the coating can be directly used without production field preparation, and has the advantages of long operation time, long storage time, simple coating process, high UV curing speed and high production efficiency.
The invention adopts the technical proposal for solving the problems that:
the UV curing fiber coating resin for the guidance optical cable comprises the following components in percentage by weight: 40-65% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 10-20% of pure acrylate resin, 15-35% of octadecyl methacrylate, 5-20% of acrylate monomer, 3-15% of UV curable cellulose ester, 0.1-5% of vinyl tri-tert-butyl peroxy silane, 0-2% of photoinitiator and 0.01-1% of photo-curing deaeration agent, wherein the sum of all components meets 100%.
In the scheme, the self-initiated carboxyl-containing polyurethane acrylate prepolymer is a difunctional prepolymer with two carboxyl groups and one photoinitiator on a molecular chain, and the structure of the difunctional prepolymer is shown as a formula (1):
the self-initiated carboxyl-containing polyurethane acrylate prepolymer has a main molecular structure of trifunctional polyether with a molecular weight of about 5000, ensures better low-temperature flexibility of the prepolymer, ensures high reactivity of the prepolymer with multiple functionalities, and has small curing shrinkage rate and good adhesion to various base materials due to a high-molecular-weight long-chain polyether structure. The two carboxyl groups in the prepolymer molecular chain can form a certain number of hydrogen bonds with polar groups on the surface of the material, so that the adhesion of matrix resin, reinforcing fibers, optical fiber coating materials and outer protective layer materials is greatly promoted. In addition, the prepolymer is different from the common polyurethane acrylate prepolymer, and the molecular chain of the prepolymer is connected with a photoinitiator to form the prepolymer with self photoinitiation activity, and the curing process can be completed under the condition that a small amount of photoinitiator is even without the photoinitiator, so that the photocuring activity of matrix resin is greatly improved, the dosage of the photoinitiator is reduced, the generation of harmful photodecomposition products of the photoinitiator is reduced, and the prepolymer is more environment-friendly.
In the scheme, the preparation method of the self-initiated carboxyl-containing polyurethane acrylate prepolymer comprises the following steps of:
(1) 1mol of 2-hydroxy-2-methyl-1-phenyl-1-acetone and 1mol of isophorone diisocyanate are added with 0.5 percent of catalyst dibutyltin dilaurate and 0.1 percent of polymerization inhibitor p-hydroxyanisole, and then the mixture is heated to 40 to 45 ℃ for constant temperature reaction for 4 to 6 hours, thus obtaining an intermediate A;
(2) Adding 1mol of isocyanate ethyl acrylate and 1mol of dimethylol butyric acid, adding a catalyst dibutyl tin dilaurate with the total mass of 0.5% and a polymerization inhibitor para-hydroxyanisole with the total mass of 0.1%, heating to 40-45 ℃ to continue constant temperature reaction for 4-6 hours, adding 1mol of isophorone diisocyanate, a catalyst dibutyl tin dilaurate with the isophorone feeding mass of 0.5% and a polymerization inhibitor para-hydroxyanisole with the isophorone feeding mass of 0.1%, and continuing constant temperature reaction for 4-6 hours at 40-45 ℃ to obtain an intermediate B;
(3) Adding 1mol of trifunctional polyether polyol EP-330NG, 1mol of intermediate A and 2mol of intermediate B, adding 0.5% of dibutyltin dilaurate serving as a catalyst and 0.1% of p-hydroxyanisole serving as a polymerization inhibitor, heating to 70-75 ℃ and reacting for 4-6 hours at constant temperature to obtain the self-initiated carboxyl-containing polyurethane acrylate prepolymer.
In the scheme, the pure acrylic ester resin is a mixture of one or more of DR-A801, DR-A830, DR-A835, DR-A870 and the like produced by Changxing chemistry in any proportion. The pure acrylic resin has good flexibility, has good adhesive force to some difficult-to-attach substrates such as glass fibers, aramid fibers, polyester fibers, polyethylene fibers, carbon fibers, high-strength blend fibers and the like, can ensure that the UV cured fiber coating resin has good adhesive force to reinforcing fibers made of different materials, can obviously improve the overall tensile strength, tensile modulus and other mechanical properties of the guidance optical cable, and further ensures that the guidance optical cable is not scattered and is not broken in the processes of winding wire coils and fast paying-off, and has good reliability.
In the scheme, the glass transition temperature Tg of the octadecyl methacrylate is-100 ℃, and the octadecyl methacrylate has excellent low-temperature performance. The octadecyl methacrylate is added into the formula, so that the lower Tg and better low-temperature performance of the UV cured fiber coating resin are ensured, and the guidance optical cable cannot generate larger bending loss at low temperature.
In the scheme, the acrylic ester monomer is one or a mixture of more of Glycidyl Methacrylate (GMA), tetrahydrofurfuryl acrylate (THFA), 3, 5-trimethylcyclohexyl acrylate (TMCHA) and the like according to any proportion. The acrylic ester monomers have low viscosity, strong dilution capability, dissolution and swelling capability and low curing shrinkage, and have polar ring structures in molecules, so that the adhesive force of the resin to a substrate is improved.
In the scheme, the cellulose ester capable of being cured by UV is prepared by reacting cellulose derivative with hydroxyl and acrylic ester with isocyanic acid radical or maleic anhydride and introducing unsaturated double bond. The resin has the characteristics of large molecular weight, low shrinkage, good thixotropy, high film forming property and the like, after the matrix resin is coated on the reinforced fiber, the reinforced fiber can be fixed around the optical fiber in a designed arrangement mode by utilizing the thixotropy until the reinforced fiber is finally shaped by UV curing, and the curing shrinkage rate of the matrix resin is greatly reduced by adding the resin in a formula, so that the adhesive force of the resin is further improved. Specifically, the UV-curable cellulose ester is a mixture of one or more of JS-113, JS-123, JS-116 and the like produced by Zhongjieda fine chemical industry Co.
In the scheme, the vinyl tri-tert-butyl peroxy silane is subjected to chemical reaction with an interface to realize the coupling effect through the free radical generated by thermal decomposition, and has remarkable effect due to the structural specificity, so that the polymer with active groups can be well bonded with metal or inorganic matters and fibers, and the polymer which is difficult to bond and lacks the active groups (such as polyolefin, silicone rubber, ethylene propylene rubber, fluororubber, fluorosilicone rubber and the like) can be effectively bonded with metal, inorganic matters and organic matters. Therefore, the adhesive strength of the matrix resin to the fibers is greatly improved by adding the fiber-reinforced plastic matrix resin into the matrix resin system, and the mechanical properties such as the tensile strength, the tensile modulus and the like of the fiber composite material and the whole guidance optical cable are also remarkably improved.
In the scheme, the photoinitiator is a cracking free radical photoinitiator, and is specifically one or a mixture of more of 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide and the like according to any proportion. The photoinitiator has high photoinitiation activity, has better curing efficiency on thick coatings and coatings with poor light transmittance, and can ensure that the fiber composite material is completely cured and adhered into a whole.
In the above scheme, the photo-curing deaerating agent is one or a mixture of a plurality of TEG RAD 2500, TEG RAD 2600, TEG RAD2700 and the like of winning specialty chemicals according to any proportion. The defoaming agents have the characteristics of accelerating defoaming and foam breaking, can rapidly eliminate air bubbles in matrix resin, and prevent the fiber reinforced material from influencing mechanical properties such as final tensile strength and the like due to coating defects generated by air bubbles in the rapid coating and curing forming processes. Different from other deaerators, the deaerator contains acrylate functional groups, so that the deaerator can participate in radiation crosslinking and curing of matrix resin, the problem that the subsequent surface coating is influenced due to the migration of the deaerator to the surface of the material is avoided, and meanwhile, the release of micromolecular substances in the matrix resin is reduced.
The preparation method of the UV curing fiber coating resin for the guidance optical cable comprises the following steps: mixing and heating the acrylate monomer, the octadecyl methacrylate, the UV-curable cellulose ester and the photoinitiator according to the components and the dosage thereof, stirring for 2-3 hours at 70-80 ℃ in a dark place until the UV-curable cellulose ester and the photoinitiator are completely dissolved, and then cooling to room temperature for standby; and adding the self-initiated carboxyl-containing polyurethane acrylate prepolymer, the pure acrylate resin, the vinyl tri-tert-butyl peroxy silane and the photo-curing deaeration agent, mixing, stirring at the temperature of 25-30 ℃ at the dark room temperature for 2-3 hours, filtering and deaerating after stirring, and obtaining the finished UV curing fiber coating resin for the guidance optical cable.
The UV curing fiber coating resin for the guidance optical cable has the viscosity (25 ℃) of 1000-6000 Pa.s, the breaking elongation (25 ℃) of more than 100%, the elastic modulus (25 ℃) of 0.1-100 MPa, the tensile strength (25 ℃) of 0.1-50 MPa, the modulus at-60 ℃ of less than 150MPa and the curing shrinkage rate of less than 3%; preferably, the viscosity (25 ℃) is 2000-4000 MPa.s, the elongation at break (25 ℃) is more than 200%, the elastic modulus (25 ℃) is 1-10 MPa, the tensile strength (25 ℃) is 1-30 MPa, the modulus at-60 ℃ is less than 100MPa, and the curing shrinkage is less than or equal to 1%.
The invention also claims a guidance optical cable, as shown in figure 1, comprising an optical fiber 1, a fiber reinforced material 2 and an outer protective layer 3, wherein the fiber reinforced material 2 is tightly wrapped on the outer layer of the optical fiber 1, the protective layer 3 is a smooth UV cured outer coating material which is wrapped on the outer side of the fiber reinforced material 2 and plays a role in protection, and the guidance optical cable is coated with a UV cured fiber coating resin for realizing tight connection and adhesion among the optical fiber 1, the fiber reinforced material (short for fiber) 2 and the outer protective layer 3. The fiber reinforced material 2 is an intermediate reinforced protective material which is formed by curing and embedding a plurality of extremely fine high-strength fiber bundles in the axial direction of the optical cable and is uniformly distributed and embedded in the resin coating material along the circumferential direction of the optical cable. The coating resin fully permeates and fills gaps among the fibers, the fibers and the outer protective layer so as to ensure tight adhesion among the fibers, the fibers and the protective layer and realize the excellent performance of high tensile strength and super bending resistance of the guidance optical cable.
According to the scheme, when the UV curing fiber coating resin for the guidance optical cable is specifically applied, reinforcing fibers are arranged around the optical fibers according to a designed structure, liquid coating resin is coated on the fibers through coating equipment and is soaked in gaps among the fibers, the fibers and the optical fibers, the Ultraviolet (UV) or ultraviolet-light emitting diode (365 nm-395 nm) curing equipment is used for quick curing, a layer of UV curing outer coating protective material is coated outside the cured fiber reinforcing material and is subjected to UV curing molding, and finally the fiber, the optical fibers and the outer protective layer material are tightly adhered together through the cured coating resin, so that the ultra-bending-resistant high-tensile guidance optical cable with the special structure is prepared. Wherein the fiber comprises glass fiber, aramid fiber, polyester fiber, polyethylene fiber, carbon fiber, high-strength blend fiber and the like.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the UV curing fiber coating resin for the guidance optical cable has the advantages of excellent full-temperature performance, good flexibility, good bending resistance, low loss, good microbending performance, high tensile strength (more than 160N), wide use temperature range (-65-95 ℃) and the like, and is suitable for the production of the guidance optical cable with a large length (more than 10 KM);
secondly, the UV curing fiber coating resin for the guidance optical cable is a single component, can be directly used without being prepared on a production site, and has long operation time and long storage time, and the use and storage processes can be finished by taking shading measures; when in use, the coating process is simple, the curing speed is high, and the production efficiency is high.
Thirdly, the UV curing fiber coating resin for the guidance optical cable has excellent adhesion to various base materials (such as reinforcing fibers, optical fibers and outer protective layer materials), and the overall tensile strength and other mechanical properties of the fiber composite material and the guidance optical cable are obviously improved, so that the guidance optical cable is ensured to be free from fiber scattering and fiber breaking in the processes of coil winding and rapid paying-off, and has better reliability.
Fourth, the UV curing fiber coating resin for the guidance optical cable has no VOC emission and low odor, does not harm the bodies of production personnel, and is safe and environment-friendly.
Drawings
FIG. 1 is a schematic view of the structure of a guidance cable.
FIGS. 2-4 are reaction equations for preparing self-initiated carboxyl group containing polyurethane acrylate prepolymers.
Detailed Description
For a better understanding of the present invention, the following examples are set forth to illustrate the invention further, but are not to be construed as limiting the invention.
In the following examples, the structure of the self-initiated carboxyl group containing polyurethane acrylate prepolymer is as follows:
the specific preparation steps of the self-initiated carboxyl-containing polyurethane acrylate prepolymer are as follows:
(1) 164.20g of 2-hydroxy-2-methyl-1-phenyl-1-propanone (photo initiator 1173) and 222.32g of isophorone diisocyanate (IPDI) are put into a flask, 1.93g of catalyst dibutyltin dilaurate and 0.39g of polymerization inhibitor p-hydroxyanisole are added, and then the temperature is raised to 40-45 ℃ for constant temperature reaction for 4-6 hours, thus obtaining an intermediate A.
(2) 141.12g of isocyanate ethyl acrylate (AOI-VM) and 148.16g of dimethylol butyric acid (DMBA) are added with 1.45g of catalyst dibutyltin dilaurate and 0.29g of polymerization inhibitor para-hydroxyanisole, then the temperature is raised to 40-45 ℃ to continue the constant temperature reaction for 4-6 hours, 222.32g of isophorone diisocyanate (IPDI) is added after the reaction is finished, 1.11g of catalyst dibutyltin dilaurate and 0.22g of polymerization inhibitor para-hydroxyanisole are added, and then the constant temperature reaction is continued for 4-6 hours at 40-45 ℃ to obtain the intermediate B.
(3) 5000g of trifunctional polyether polyol EP-330NG, 388.84g of intermediate A and 1029.50g of intermediate B are added with 32.09g of catalyst dibutyltin dilaurate and 6.42g of polymerization inhibitor para-hydroxyanisole, and then the temperature is raised to 70-75 ℃ for constant temperature reaction for 4-6 hours, thus obtaining the low Tg self-initiated carboxyl-containing polyurethane acrylate prepolymer.
Wherein the structure of the 2-hydroxy-2-methyl-1-phenyl-1-propanone (photoinitiator 1173) is as follows:
the structure of isophorone diisocyanate (IPDI) is as follows:
the structure of the intermediate A is as follows:
the structure of the isocyanate ethyl acrylate AOI-VM is as follows:
the structure of the dimethylolbutyric acid (DMBA) is as follows:
the structure of the intermediate B is as follows:
the structure of the trifunctional polyether polyol EP-330NG (manufactured by Shandong blue Star Co., ltd., molecular weight of about 4500-5100) is as follows:
the reaction equations involved in the above steps are shown in fig. 2 to 4, respectively.
In the following examples, the octadecyl methacrylate has the following structure:
in the following examples, the Glycidyl Methacrylate (GMA) has the structural formula:
in the following examples, the tetrahydrofurfuryl acrylate (THFA) has the following formula:
in the examples below, the 3, 5-trimethylcyclohexyl acrylate (TMCHA) structure is as follows:
in the following examples, the structure of the vinyl tri-t-butylperoxy silane is as follows:
example 1
The UV curing fiber coating resin for the guidance optical cable comprises the following components in percentage by weight: 50.2% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 12% of pure acrylate resin, 20% of octadecyl methacrylate, 6% of acrylate monomer, 7.4% of UV-curable cellulose ester, 3% of vinyl tri-tert-butyl peroxy silane, 1.2% of photoinitiator, 0.2% of photo-curing deaeration agent and the sum of all components is 100%.
Wherein the pure acrylic resin comprises the following components in percentage by weight: 33% of Changxing chemical materials Co., ltd DR-A801, 67% of Changxing chemical materials Co., ltd DR-A830; the acrylate monomer comprises the following components in percentage by weight: 20% Glycidyl Methacrylate (GMA), 80% tetrahydrofurfuryl acrylate (THFA); the UV curable cellulose ester comprises the following components in percentage by weight: 50% of JS-113 produced by Zhongshan Jieda fine chemical industry company and 50% of JS-123 produced by Zhongshan Jieda fine chemical industry company; the photoinitiator comprises the following components in percentage by weight: 40% 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 60% bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide; the photocuring deaeration agent comprises the following components in percentage by weight: 45% of the TEG RAD 2500 of the winning specialty chemical and 55% of the TEG RAD2700 of the winning specialty chemical.
The performance of the guided optical cable prepared in this example was tested with a UV curable fiber coated resin and the results are shown in table 1.
Table 1 technical index of example 1
Example 2
The UV curing fiber coating resin for the guidance optical cable comprises the following components in percentage by weight: 55% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 10% of pure acrylate resin, 18.8% of octadecyl methacrylate, 5.4% of acrylate monomer, 6.4% of UV-curable cellulose ester, 2.5% of vinyl tri-tert-butyl peroxy silane, 1.6% of photoinitiator, 0.3% of photo-curing deaeration agent and 100% of sum of all components.
Wherein the pure acrylic resin comprises the following components in percentage by weight: 44% of Changxing chemical materials, inc. DR-A801, 56% of Changxing chemical materials, inc. DR-A870; the acrylate monomer comprises the following components in percentage by weight: 30% 3, 5-trimethylcyclohexyl acrylate (TMCHA), 70% tetrahydrofurfuryl acrylate (THFA); the UV curable cellulose ester comprises the following components in percentage by weight: 20% of JS-116 produced by Zhongshan Jieda fine chemical industry company and 80% of JS-123 produced by Zhongshan Jieda fine chemical industry company; the photoinitiator comprises the following components in percentage by weight: 50% 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 50% 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide; the photocuring deaeration agent comprises the following components in percentage by weight: 50% of the winning specialty chemical TEG RAD 2600, 50% of the winning specialty chemical TEG RAD2700.
The performance of the guided optical cable prepared in this example was tested with a UV curable fiber coated resin and the results are shown in table 2.
Table 2 technical index of example 2
Example 3
The UV curing fiber coating resin for the guidance optical cable comprises the following components in percentage by weight: 62% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 11% of pure acrylate resin, 15% of octadecyl methacrylate, 5.2% of tetrahydrofurfuryl acrylate (THFA), 4.5% of UV-curable cellulose ester, 2.2% of vinyl tri-tert-butyl peroxy silane, 0.1% of photo-curing deaeration agent and the sum of the components is 100%.
Wherein the pure acrylic resin comprises the following components in percentage by weight: 50% of Changxing chemical materials, inc. DR-A830, 50% of Changxing chemical materials, inc. DR-A835; the UV curable cellulose ester comprises the following components in percentage by weight: 42% of Zhongshan Jieda fine chemical company JS-113 and 58% of Zhongshan Jieda fine chemical company JS-123; the photocuring deaeration agent comprises the following components in percentage by weight: 30% of the TEG RAD 2600 of the winning specialty chemical and 70% of the TEG RAD 2500 of the winning specialty chemical.
The performance of the guided optical cable prepared in this example was tested with a UV curable fiber coated resin and the results are shown in table 3.
Table 3 technical index of example 3
Example 4
The UV curing fiber coating resin for the guidance optical cable comprises the following components in percentage by weight: 44% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 15% of pure acrylate resin, 26% of octadecyl methacrylate, 6% of acrylate monomer, 4.4% of UV-curable cellulose ester, 2.6% of vinyl tri-tert-butyl peroxy silane, 1.8% of photoinitiator, 0.2% of photo-curing deaeration agent and 100% of the sum of all components.
Wherein the pure acrylic resin comprises the following components in percentage by weight: 25% of Changxing chemical materials Co., ltd DR-A830, 75% of Changxing chemical materials Co., ltd DR-A870; the acrylate monomer comprises the following components in percentage by weight: 10% 3, 5-trimethylcyclohexyl acrylate (TMCHA), 90% tetrahydrofurfuryl acrylate (THFA); the UV curable cellulose ester comprises the following components in percentage by weight: 70% of JS-113 produced by Zhongshan Jieda fine chemical industry company and 30% of JS-116 produced by Zhongshan Jieda fine chemical industry company; the photoinitiator comprises the following components in percentage by weight: 50% 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 50% 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide; the photocuring deaeration agent comprises the following components in percentage by weight: 43% of the winning specialty chemical TEG RAD 2600, 57% of the winning specialty chemical TEG RAD2700.
The performance of the guided optical cable prepared in this example was tested with a UV curable fiber coated resin and the results are shown in table 4.
Table 4 technical index of example 4
The preparation method of the UV curable fiber coating resin for the guidance optical cable described in examples 1 to 4 comprises the following steps: according to the proportion, the acrylate monomer, the octadecyl methacrylate, the UV-curable cellulose ester and the photoinitiator are mixed and heated to 70-80 ℃ and stirred for 2-3 hours in a dark place until the UV-curable cellulose ester and the photoinitiator are completely dissolved, and then cooled to room temperature for standby. And finally, adding all the residual raw material components of the formula into the self-initiated carboxyl-containing polyurethane acrylate prepolymer, the pure acrylate resin, the vinyl tri-tert-butyl peroxy silane and the photo-curing deaeration agent, mixing, and stirring at the temperature of 25-30 ℃ at the dark room temperature for 2-3 hours, filtering and deaerating after the stirring is finished, thus obtaining the finished product UV curing prepreg matrix resin for the guidance optical cable.
In order to confirm the performance of the guidance cable drawn by the UV cured fiber coating resin for the guidance cable, the specific conditions and the method are as follows:
production speed: 500m/min; curing equipment: a UV curing lamp; the final cable outer diameter was 0.3mm. As shown in FIG. 1, reinforcing fibers are arranged around optical fibers according to a designed structure, the optical fiber cable prepared in the embodiment is coated on the fibers by using UV curing fiber coating resin through coating equipment, gaps among the fibers are filled, the fibers are cured rapidly by using UV or UV-LED (365 nm-395 nm wave band) curing equipment, a layer of matched special UV curing outer coating protective material is coated outside the cured fiber reinforced material through coating equipment and is formed by UV curing, and finally the fiber, the optical fiber and the outer protective layer material are tightly adhered together by the cured coating resin, so that the special ultra-bending-resistant high-tensile-strength optical fiber cable is prepared.
The tensile strength, the normal temperature and high and low temperature bending properties, and the like of the guide cables prepared in examples 1 to 4 were measured, and the results are shown in tables 5 and 6.
TABLE 5
( And (3) injection: the reinforcing fiber material is ultra-high molecular weight polyethylene fiber )
TABLE 6
In conclusion, the UV-cured fiber coating resin for the guidance optical cable has the advantages of excellent full-temperature mechanical property, low curing shrinkage, good adhesion to reinforcing fibers, optical fibers and outer protective layer materials, long storage time and the like, does not contain harmful volatile matters such as styrene and the like, is low in odor, and the guidance optical cable prepared from the UV-cured fiber coating resin has the characteristics of low loss, good microbending performance, long single length (more than 10 KM), high tensile strength (more than 160N), simple preparation process, wide use temperature range (-65-95 ℃) and the like, and has performance far superior to that of common guidance optical cables.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and changes can be made by those skilled in the art without departing from the inventive concept and remain within the scope of the invention.

Claims (7)

1. The UV curing fiber coating resin for the guidance optical cable is characterized by comprising the following components in percentage by weight: 40-65% of self-initiated carboxyl-containing polyurethane acrylate prepolymer, 10-20% of pure acrylate resin, 15-35% of octadecyl methacrylate, 5-20% of acrylate monomer, 3-15% of UV curable cellulose ester, 0.1-5% of vinyl tri-tert-butyl peroxy silane, 0-2% of photoinitiator, 0.01-1% of photo-curing deaeration agent, and the sum of all components meeting 100%;
the self-initiated carboxyl-containing polyurethane acrylate prepolymer has a structure shown in a formula (1):
where x+y+z=73 to 84.
2. The UV curable fiber coated resin for a guided optical cable according to claim 1, wherein the preparation method of the self-initiated carboxyl group-containing urethane acrylate prepolymer comprises the steps of:
(1) Adding catalyst dibutyl tin dilaurate and polymerization inhibitor p-hydroxyanisole into 2-hydroxy-2-methyl-1-phenyl-1-acetone and isophorone diisocyanate, and then heating to 40-45 ℃ for constant temperature reaction for 4-6 hours to obtain an intermediate A;
(2) Adding catalyst dibutyl tin dilaurate and polymerization inhibitor p-hydroxyanisole into isocyanate ethyl acrylate and dihydroxymethyl butyric acid, heating to 40-45 ℃ to continue constant temperature reaction for 4-6 hours, adding isophorone diisocyanate, catalyst dibutyl tin dilaurate and polymerization inhibitor p-hydroxyanisole after the reaction is finished, and then continuing constant temperature reaction for 4-6 hours at 40-45 ℃ to obtain an intermediate B;
(3) Adding catalyst dibutyl tin dilaurate and polymerization inhibitor p-hydroxyanisole into trifunctional polyether polyol, intermediate A and intermediate B, heating to 70-75 deg.C, and making constant-temp. reaction for 4-6 hr so as to obtain the self-initiating carboxyl-containing polyurethane acrylate prepolymer.
3. The UV curable fiber coated resin for a guided optical cable according to claim 2, wherein in the step (1), the 2-hydroxy-2-methyl-1-phenyl-1-propanone and isophorone diisocyanate are fed in a molar ratio of 1:1; in the step (2), the feeding amount of isocyanate ethyl acrylate, dihydroxymethyl butyric acid and isophorone diisocyanate is 1:1:1 in molar ratio; in the step (3), the feeding amount of the trifunctional polyether polyol, the intermediate A and the intermediate B is 1:1:2 in terms of molar ratio; in the steps (1) - (3), the dosages of the catalyst and the polymerization inhibitor are respectively 0.1% -0.5% of the total feeding mass of the corresponding steps.
4. The UV curable fiber coated resin for a guided optical cable according to claim 1, wherein the pure acrylate resin is a mixture of one or more of DR-a801, DR-a830, DR-a835, DR-a870 produced by changxing chemistry in an arbitrary ratio; the UV curable cellulose ester is one or a mixture of more than one of JS-113, JS-123 and JS-116 produced by Zhongshan Jieshi fine chemical industry company according to any proportion; the photocuring deaeration agent is one or a mixture of a plurality of TEG RAD 2500, TEG RAD 2600 and TEG RAD2700 of winning specialty chemical according to any proportion.
5. The UV curable fiber coated resin for a guided optical cable according to claim 1, wherein the acrylate monomer is one or more of glycidyl methacrylate, tetrahydrofurfuryl acrylate, 3, 5-trimethylcyclohexyl acrylate, and a mixture thereof in any ratio.
6. The UV curable fiber coated resin for a guided optical cable according to claim 1, wherein the photoinitiator is one or more of a split-type radical photoinitiator 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide, and a mixture thereof in any ratio; the structure of the vinyl tri-tert-butyl peroxy silane is shown as a formula (13):
7. the preparation method of the UV-curable fiber coating resin for the guidance optical cable according to the claim 1 is characterized in that according to the components and the dosage of the components in the claim 1, acrylate monomers, octadecyl methacrylate, UV-curable cellulose ester and photoinitiator are mixed and heated to 70-80 ℃ and stirred for 2-3 hours in a dark place until the UV-curable cellulose ester and the photoinitiator are completely dissolved, and then cooled to room temperature for standby; and adding the self-initiated carboxyl-containing polyurethane acrylate prepolymer, the pure acrylate resin, the vinyl tri-tert-butyl peroxy silane and the photo-curing deaeration agent, mixing, stirring at the temperature of 25-30 ℃ at the dark room temperature for 2-3 hours, filtering and deaerating after stirring, and obtaining the finished UV curing fiber coating resin for the guidance optical cable.
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