189 results about "Softening point" patented technology

The invention relates to the technical field of optical element machining, in particular to an HUD free-form surface mirror machining method which comprises the following steps of S1, substrate selection and cutting, S2, edge treatment, S3, first-stage hot bending forming, S4, second-stage hot bending forming and S5, grinding. According to the machining method disclosed by the invention, through cooperative use of the first-stage hot bending forming and the second-stage hot bending forming, machining operation of the free-form surface mirror with the large size, the large curvature and the small thickness can be achieved; meanwhile, through the two-stage hot bending forming process, primary forming is conducted through first-stage hot bending forming, pressure maintaining is conducted near a softening point through second-stage hot bending forming, the glass is evenly heated and stressed, residual stress is effectively released, the surface type is promoted to present an ideal gradual change trend, edge distortion is greatly reduced, and the high-precision surface type of the final curved mirror is ensured.

The invention provides a preparation method of chlorinated paraffin 70 with a high softening point, and belongs to the technical field of chlorinated paraffins.The preparation method comprises the steps that S1, mixed wax is provided, and raw materials of the mixed wax are Fischer-Tropsch wax and petrochemical wax; s2, feeding the mixed wax into a reactor, then turning on an ultraviolet lamp in the reactor for irradiation, after liquid chlorine is gasified to form chlorine, feeding chlorine into the reactor, heating and carrying out segmented control reaction; s3, after the reaction is finished, blowing air into the reactor, then washing a reaction product with water, and then adding a compound stabilizer into a crude product obtained by washing with water, so as to obtain chlorinated paraffin 70; the chlorine content of the chlorinated paraffin 70 is not less than 69.5%, the softening point is not less than 98 DEG C, and the acid value is not more than 0.1 mgKOH / g. According to the method, hot chlorination and photo-initiation are combined, so that the chlorine content and the softening point of the product are controllable, the production efficiency is high, the reaction speed is high, the reaction temperature is reduced, the production period is shortened, and the product quality is stable.

The invention relates to the technical field of hot-melt pressure-sensitive adhesives, in particular to a hot-melt pressure-sensitive adhesive special for instillation type coating and a preparation method of the hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive is prepared from the following raw materials in parts by mass: 25 to 35 parts of styrene block copolymer, 40 to 50 parts of tackifying resin, 20 to 30 parts of plasticizer and 0.1 to 0.5 part of antioxidant. Wherein the styrene block copolymer is preferably compounded from S-1528, 4411ND and 6241A, the tackifying resin is preferably hydrogenated rosin glyceride with the softening point of 85-90 DEG C, and the plasticizer is medical white oil. The 180-degree peel strength of the prepared product is larger than 5.0 N / 25 mm, the 180-degree viscosity is 2000-6500 cps, the instillation precision can reach + / -8 microns, and the product has excellent adhesive performance and process adaptability and is suitable for instillation type coating scenes.

The invention provides an asphalt material softening point prediction modeling method based on an infrared spectrum, and belongs to the technical field of road engineering material performance prediction. The method comprises the following steps: collecting infrared spectrum data of a multi-source asphalt sample and carrying out standardization pretreatment; fusing and extracting functional group quantitative features, wavelet multi-scale features and principal component dimension reduction features; constructing a high-stability feature subset by adopting a progressive feature optimization strategy guided by a physical mechanism; a self-adaptive Stacking fusion model is constructed and trained, the model integrates four base learners including PLSR, SVR, random forest and gradient boosting regression, and Bayesian ridge regression is used as a meta-learner to realize uncertainty quantification of a prediction result. The method can quickly output the predicted value of the softening point without a physical test, solves the technical problems of low efficiency and poor consistency of a traditional method, and is suitable for production quality control, on-site quick detection and formula optimization of asphalt materials.

The present application relates to a capillary array, its manufacturing method, and use. The capillary array includes a plurality of parallel-axially arranged capillaries made of a first glass, each of which has an inner wall provided with a low-refractive-index layer whose refractive index is lower than that of a liquid scintillator, and a light-absorbing layer made of a second glass between any two adjacent capillaries. The capillary array includes a capillary region in which T1 - T2 is 30 to 50°C, where T1 is the softening point of the first glass and T2 is the softening point of the second glass, and the thermal expansion coefficient of the first glass is α1. The capillary region is made of a third glass, which is disposed outside the capillary region and in contact with the outer surface of the capillary region, and has a softening point of T3, where T2 - T3 is 50 to 100°C, and the thermal expansion coefficient of the third glass is α3, where α1 - α3 is 2×10. -7 ~10×10 -7 / °C. The technical problem to be solved by the present application is to manufacture a capillary array such that a liquid scintillator optical fiber panel manufactured using the capillary array has high spatial resolution, high hole diameter uniformity, high numerical aperture, and high coupling efficiency, and the manufacturing process is simple.

The present subject matter relates to a method of creating layers of interconnected or contiguous material using a heated powdered composition comprising base particles and a barrier material, and applying a reducing agent to the powdered composition. The heated powdered composition can be maintained at a temperature above its melting or softening point, and the barrier material prevents coalescence between the particles until the reducing agent is applied.

A toner including a toner particle containing a binder resin containing an amorphous polyester A and a crystalline polyester C, and a wax, and a silica fine particle, wherein the content of the crystalline polyester C is within a specific range, the softening point of the amorphous polyester A satisfies a specific relationship, and in an X-ray diffraction spectrum under a specific temperature condition for the toner, there is a peak corresponding to the crystalline polyester C, a wax index AW1 and a crystalline polyester index AC1 of the toner satisfy a specific relationship, the silica fine particle contains a silica fine particle A having a maximum diameter of primary particle in a specific range, and the average coverages of the surface of the toner before and after the toner is treated with hexane with the silica fine particle A satisfy a specific relationship.

This invention discloses a production process for sulfur dioxide-resistant electroplated aluminum and the resulting electroplated aluminum, relating to the field of electroplated aluminum. The production process for sulfur dioxide-resistant electroplated aluminum includes: coating a release coating onto a base film layer to obtain a release layer; coating an imaging coating onto the release layer to obtain a color layer; molding and aluminum plating the color layer to obtain an aluminum-plated layer; and coating the aluminum-plated layer with an adhesive to obtain electroplated aluminum. The imaging coating comprises the following raw materials in parts by weight: 80-100 parts of modified monomeric acrylic polymer, 7-10 parts of isocyanate curing agent, 3-6 parts of highly branched semi-crosslinked polyurethane prepolymer, 0.8-1.5 parts of dispersant, 0.2-0.5 parts of defoamer, 35-50 parts of methyl ethyl ketone (MEK), and 35-50 parts of pentamidine ketone (PHK). The highly branched semi-crosslinked polyurethane prepolymer has a molecular weight of 110,000-120,000 and a softening point temperature of 220-240°C. This application provides electroplated aluminum resistant to sulfur dioxide corrosion.

This invention belongs to the field of glass technology and relates to a high-temperature resistant structural glass material, its preparation method, and its applications. The glass is composed of the following components by mass percentage: 60%-70% silicon dioxide, 5.5%-11% boric acid, 0.1%-5% aluminum hydroxide, 0%-3% potassium nitrate, 5.5%-13% potassium carbonate, 0%-12% sodium carbonate, 0.1%-4% calcium carbonate, 0%-2% calcium fluoride, 0%-1% lithium carbonate, 0%-2% basic magnesium carbonate, 0.1%-1% titanium dioxide, 0%-2% zirconium dioxide, and 0%-1% cerium dioxide; the total mass percentage of potassium nitrate, potassium carbonate, sodium carbonate, and lithium carbonate does not exceed 22%. This structural glass possesses a high softening temperature, a suitable coefficient of thermal expansion, high-temperature resistance, thermal shock resistance, and processing performance, making it suitable as a structural material for optoelectronic devices.

The invention provides a hot-pressing strippable coating composition with a Fresnel lens effect. The hot-pressing strippable coating composition comprises the following components in parts by weight: 20-50 parts of polyurethane resin with active groups; 2-6 parts of solid acrylic resin; 1-3 parts of cellulose ester resin; 1-5 parts of a latent curing agent; 0-0.3 part of an auxiliary agent; 40 to 60 parts of a solvent; wherein the glass transition temperature (Tg) of the polyurethane resin with the active groups is 25 to 50 DEG C. The method has the beneficial effects that the system provided by the invention is high in practicability, simple and easy to operate. And the introduced low-Tg (25-50 DEG C) polyurethane resin with active groups can easily reach a softening point during hot pressing, has excellent flowability, can well fill a fine grating of a Fresnel lens, and has a full replication effect. The polyurethane resin is matched with a latent curing agent and is stable at normal temperature; and when the hot-pressing temperature threshold value is reached, a cross-linking reaction is initiated. The mechanism improves the temperature-resistant effect of the system, and solves the problems that low-Tg resin is easy to stick and reverse light in the later period.

Provided is a novel curable organopolysiloxane composition and the like that can be used in the production of semiconductor components and the like. A curable organopolysiloxane composition comprising: (A1) an organopolysiloxane having no curable functional group having an aliphatic unsaturated bond within the molecule, and containing at least 20 mol% or more of siloxane units represented by SiO 4 / 2 (A1-1) in the total siloxane units; (A2) an organopolysiloxane having at least one monovalent hydrocarbon group having an aliphatic unsaturated bond in one molecule; (B) an organohydrogenpolysiloxane containing at least two silicon-bonded hydrogen atoms in one molecule; (C) a first hydrosilylation catalyst that exhibits activity by irradiation of high-energy rays; and (D) a second hydrosilylation catalyst microencapsulated by a thermoplastic resin having a softening point in the temperature range of 50 to 200°C.

The invention discloses an oil-soluble temporary plugging agent for protecting a broad-spectrum drilling oil and gas reservoir and a preparation method, and belongs to the technical field of temporary plugging agents, the oil-soluble temporary plugging agent comprises the following components by weight: 1.2-6.8 parts of a flexible resin material; 1.9 to 7.5 parts of a rigid resin material; 0.3 to 0.7 part of a particle size regulator; 0.2 part to 0.6 part of a particle nucleating agent; and 0.1 to 0.3 part of an interface modifier. The oil-soluble temporary plugging agent has the advantages that the softening point is adjustable in the range of 60-120 DEG C, the particle size is controllable in the range of 0.01-2.0 mm, and due to the flexible structural characteristic of the oil-soluble temporary plugging agent, the oil-soluble temporary plugging agent has wide universality and can be perfectly matched with pore structures of different oil and gas reservoirs, and the problems that softening points of a traditional oil-soluble temporary plugging agent are intensively distributed, and the particle size is not matched with the pore structures of the reservoirs are effectively solved.

A method for producing a laminate of a cured material from a photosensitive resin composition (1) and a photosensitive resin composition (2), wherein the method includes a step of obtaining a laminated material by laminating the composition (2) onto the composition (1); a step of subjecting the laminated material to photoexposure to obtain a photocured material; a step of developing the photocured material to obtain a developed material; and a step of heating the developed material to obtain a laminate, wherein the photoexposure dose required to cure the composition (2) is smaller than the dose required to cure the composition (1), and wherein the composition (1) contains an epoxy resin (1) having a weight-average molecular weight Mw of 5,000 to 600,000, a softening point of at least 140° C., and an epoxy equivalent weight of not more than 2,300.

This invention provides a peelable coating composition for achieving a Fresnel lens effect through heat pressing, comprising the following components in parts by weight: 20-50 parts of polyurethane resin with active groups; 2-6 parts of solid acrylic resin; 1-3 parts of cellulose ester resin; 1-5 parts of latent curing agent; 0-0.3 parts of additives; and 40-60 parts of solvent; wherein the glass transition temperature (Tg) of the polyurethane resin with active groups is 25-50°C. The advantages of this invention are: the system provided by this invention is highly practical and easy to operate. The low Tg (25-50°C) polyurethane resin with active groups introduced easily reaches its softening point during hot pressing, exhibiting excellent fluidity and effectively filling the fine gratings of the Fresnel lens, resulting in a full replication effect. This polyurethane resin, combined with the latent curing agent, is stable at room temperature; when the hot pressing temperature threshold is reached, a cross-linking reaction is initiated. This mechanism improves the system's temperature resistance and solves the problems of easy adhesion and reflection of low Tg resins in the later stages.

The invention discloses a low-polarity hot-melt pressure-sensitive adhesive, which is prepared from the following raw materials in percentage by weight: 50 to 70 percent of APAO polyolefin, 10 to 25 percent of alkane wax, 20 to 30 percent of petroleum resin and 0.1 to 1 percent of antioxidant. The APAO polyolefin with different melt viscosities and different molecular weights at 90 DEG C is adopted, so that the cohesion, flexibility and thermal stability of the colloid can be remarkably improved, and the problem of high-temperature flowing or low-temperature embrittlement generated by the APAO polyolefin with single performance is avoided. According to the invention, the balance between the low viscosity of 3000 + / -300cps at 150 DEG C and the high softening point of more than or equal to 120 DEG C is realized. And moreover, the quick opening time and the wide temperature range adaptability are considered, and the film covering performance of plastic films such as BOPP, PET and PE is improved.

The invention provides polyester resin for a transparent powder coating with excellent adhesive force and leveling as well as a preparation method and application of the polyester resin, and belongs to the technical field of powder coatings. The polyester resin is mainly prepared by taking diethylenetriamine pentaacetic acid, triethyl chlorosilane, 1, 6-hexanediol, N, N-diisopropylethanolamine, 2, 2-dimethyl propanol, neopentyl glycol, 3, 3-tetramethylene glutaric anhydride, 1, 4-cyclohexanedimethanol and the like as raw materials through polymerization. The obtained polyester resin chain segment has many branched structures, the number of amino groups and ester groups in the branched structures is large, the softening point is low, the low-temperature melting fluidity is good, the transparency is high, the adhesive force with a base material is good, then high-functionality diethylenetriamine pentaacetic acid is adopted for carboxyl end capping, the terminal carboxyl functionality is high, the curing activity is high, and the curing effect is good. After being cured with E-12 epoxy resin at low temperature, a coating film is good in leveling property and high in transparency, and can be used in the fields of thermosensitive base materials which are not easy to adhere, such as thin glass materials and the like.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-adhesion high-temperature-resistant copper foil single-sided adhesive and a preparation method thereof. Comprising a copper foil and a pressure-sensitive adhesive which are laminated, the thickness of the copper foil is 12-30 [mu] m, the thickness of the pressure-sensitive adhesive is 10-30 [mu] m, the normal-temperature storage modulus is 200000-270000 Pa, the pressure-sensitive adhesive comprises an acrylate polymer and a terpene polymer, the acid value of the acrylate polymer is 16-22 mgKOH / g when the solid content is 21%, the normal-temperature storage modulus is 150000-180000 Pa, the acid value of the terpene polymer is 60-120 mgKOH / g, the softening point is 120-140 DEG C, and the temperature of the terpene polymer is 20-30 DEG C. The terpene polymer is obtained by free radical polymerization of a terpene monomer, a hard segment monomer and an acidic monomer under the action of an initiator. The copper foil single-sided adhesive prepared by the preparation method disclosed by the invention is thin in thickness and low in cost, and has excellent adhesion and warping resistance to foam.

The present teachings generally relate to a sealant composition that is adapted to be foamed, cured or some combination thereof, a method of making the activatable sealant composition and methods of using the same. The activatable sealant composition comprises one or more preferably high softening point or high melting point polymeric materials; one or more foaming agents; one or more foaming agent activators; and one or more hydrocarbon resins; wherein the activatable sealant composition is supplied to an article of manufacture for providing functional attributes such as scaling, baffling, dampening, reinforcement, or a combination thereof.

A kind of multi-component ultra-high temperature ceramic fiber and its preparation method, belong to continuous ultra-high temperature ceramic fiber preparation technical field.Different from the method for preparing ultra-high temperature ceramic fiber by using the blend of silicon-based ceramic precursor and ultra-high temperature metal component precursor as raw material, the preparation method of the ultra-high temperature metal component precursor can realize the uniform dispersion of multi-component, and the refractory metal component content in the precursor is high, which can effectively improve the temperature resistance grade of the fiber and the high-temperature mechanical properties, oxidation resistance and other properties.The non-fusible treatment of fiber precursor is realized by using a combination of various pre-crosslinking methods, effectively solving the problems of difficult non-fusible treatment of fiber precursor caused by low softening point and few active groups of the precursor, and difficult to obtain shaped ceramic fiber.The ultra-high temperature ceramic fiber prepared by the present application has excellent high-temperature mechanical properties and oxidation resistance, and can be used as a reinforcing material for ultra-high temperature ceramic fiber reinforced ceramic matrix composites.

The utility model relates to building asphalt performance test technical field, concretely relates to the production device of high -grade waterproof asphalt softening point test sample, including sample preparation subassembly and refrigeration subassembly, sample preparation subassembly includes sample ring and from top to bottom superimposed upper cover plate, sample preparation board and lower bottom plate, one side of upper cover plate is hinged with sample preparation board, has opened sample preparation hole on sample preparation board, and the inner surface of sample preparation hole is in accord with the outer surface of sample ring, refrigeration subassembly includes the circulating pipeline that is located in the inside of upper cover plate and lower bottom plate, and the both ends of circulating pipeline are circulating liquid inlet and circulating outlet respectively, circulating liquid inlet connects the liquid tank export, and circulating outlet connects liquid tank import, is equipped with cooling coil pipe in liquid tank, and cooling coil pipe import connects condenser refrigerant export, and cooling coil pipe export connects condenser refrigerant import. The utility model discloses sample preparation process is more safe and simple, has reduced the operation difficulty of sample preparation, has improved the accuracy of high -grade waterproof asphalt softening point test.

The invention relates to aromatic hydrocarbon-rich petroleum-based impregnant asphalt and a preparation method thereof, and belongs to the technical field of asphalt chemical industry. The impregnant asphalt is prepared from oil refining and chemical byproducts in the Xinjiang region, and the performance indexes of the impregnant asphalt are as follows: the softening point is 85-100 DEG C, the toluene insoluble substance content is 15-35 wt%, the carbon residue value is 50-60 wt%, the quinoline insoluble substance content is 0-0.5 wt%, the total aromatic hydrocarbon content is 75-85%, and the hydrocarbon element ratio is 1.5-1.8. The preparation method comprises the following steps: carrying out solvent deasphalting or distillation cutting on a specific petroleum-based raw material to obtain a 350-480 DEG C aromatic hydrocarbon-rich fraction; then carrying out a thermal polycondensation reaction for 5-9 hours at the temperature of 380-410 DEG C and the pressure of 1.0-4.0 MPa in an inert atmosphere; and finally distilling to remove light components to obtain the product. According to the invention, through adaptive treatment and accurate thermal polycondensation of specific raw materials, high carbon residue of the product is synergistically realized, and the product is suitable for toluene insoluble substances and extremely low quinoline insoluble substances, and has excellent comprehensive performance.

This enables improved optical properties of microlens arrays and miniaturization of lenses. [Solution] A method for manufacturing a microlens array according to one embodiment includes a substrate preparation step S1 of preparing a substrate having one surface with a plurality of recesses, a lens element preparation step S2 of preparing a plurality of lens elements having a softening point lower than the softening point of the substrate, a lens element placement step S3 of placing the lens elements in each recess, and a heating step S4 of heating the substrate and the lens elements at a temperature higher than the softening point of the lens elements and lower than the softening point of the substrate. In the heating step S4, the lens elements are liquefied and raised higher than the edges of the recesses due to surface tension.

The invention discloses a high-temperature-resistant and electrolyte-corrosion-resistant battery cell insulating film. An adhesive tape sequentially comprises a release film layer, an adhesive layer, a first primer layer, a first base material layer, a second primer layer, a middle adhesive layer and a second base material layer from top to bottom. The adhesive layer is an acrylate resin adhesive layer, 0-15% of modified filler and reactive tackifying resin compounded by high and low softening points are added into the acrylate resin adhesive layer, the high softening point is specifically 120-150 DEG C, the adding proportion is 8-30%, the low softening point is specifically 70-100 DEG C, and the adding proportion is 5-25%. The high-temperature-resistant and electrolyte-corrosion-resistant battery cell insulating film provided by the invention has good tolerance to organic solvents, weak acids, saline water, electrolyte and the like while having a conventional lithium battery surface insulation protection effect, and an adhesive tape can also keep good adhesive property after high-temperature and low-temperature circulation; and meanwhile, the properties of insulation, pressure resistance, puncture resistance and the like of the insulating film can be improved.

A toner comprising a toner particle comprising a binder resin, a nonmagnetic inorganic oxide particle A, and a magnetic iron oxide particle B, wherein a softening point of a chloroform-soluble component of the toner particle is not greater than 90° C.; the nonmagnetic inorganic oxide particle A and the magnetic iron oxide particle B are internally added to the toner particle; the nonmagnetic inorganic oxide particle A comprises as its main component at least one element selected from the group consisting of Si, Mg, Al, Ti, and Sr; a proportion of the inorganic oxide particles having a long diameter of specific length is in specific range; and a value of a ratio of a number-average particle diameter of the long diameter for the nonmagnetic inorganic oxide particle A, to a number-average particle diameter of the long diameter for the magnetic iron oxide particle B, is 5 to 30.

The application provides a solid edge glass material for controlling deformation of an ultrathin microchannel plate and an application thereof, and the solid edge glass material comprises the following components in percentage by mass: SiO2 60-70%; Na2O 8-12%; K2O 5-10%; MgO 2-8%; CaO 2-8%; and BaO 1-5%. The coefficient of thermal expansion of the solid edge glass material is higher than that of the effective area skin glass material, and the softening point of the solid edge glass material is lower than that of the effective area skin glass material. The single material solid edge made of the solid edge glass material forms a tensile stress on the effective area before hydrogen reduction of the microchannel plate, offsets the change trend of the volume and the coefficient of thermal expansion of the effective area skin glass during the hydrogen reduction process, and solves the deformation problem of the ultrathin microchannel plate during the hydrogen reduction process.

The application discloses a hot melt adhesive, a hydrogen fuel cell packaging hot melt adhesive film based on the hot melt adhesive and a preparation method of the hydrogen fuel cell packaging hot melt adhesive film, and the hot melt adhesive comprises the following components in parts by weight: 50-80 parts of a main resin, 10-50 parts of a tackifying resin, 2-10 parts of an adhesion modifying resin and 0.05-0.5 parts of an antioxidant; wherein the main resin comprises 80-95% of a main resin A and 5-20% of a main resin B in mass percentage, and the mass percentage of the main resin A and the main resin B is 100%. The hot melt adhesive film prepared from the hot melt adhesive provided by the application has no adhesion at room temperature, so that the placement accuracy can be improved and the rework can be reduced; meanwhile, the hot melt adhesive film has a high softening point and a high shear adhesion failure temperature, can guarantee the adhesion in a high-temperature and high-humidity environment and has excellent weather resistance, and can be well applied to the use environment of a fuel cell.

To provide a pressure-sensitive adhesive composition for a decorative sheet, which is excellent in adhesion to a low-polarity adherend, heat-resistant adhesion, heat-resistant holding power, and transparency / moldability (coating appearance after molding) in decoration of a molded article, and to provide a decorative sheet and a decorative structure.SOLUTION: The problem is solved by a pressure-sensitive adhesive composition for a decorative sheet containing a block copolymer (A) and a tackifier resin (B), the pressure-sensitive adhesive composition containing a styrene-based elastomer (a- 1) having a soft block composed of at least one of polybutadiene and polyisoprene and a hard block composed of a polymer of a vinyl aromatic compound, and the tackifier resin (B) having a softening point of 125 to 200 °C.SELECTED DRAWING: None

The application relates to a microcrystalline glass heating plate, a preparation method thereof and a heating device. The preparation method of the microcrystalline glass heating plate comprises the following steps: covering heating ink containing graphene and glass powder on a first microcrystalline glass to form a liquid film; performing sintering treatment on the liquid film to form a heating layer; and performing packaging treatment on the heating layer to prepare the microcrystalline glass heating plate; wherein the sintering treatment comprises the following steps: through gradient temperature rising treatment, the liquid film is heated to a sintering temperature, is kept warm for 25 min to 35 min, and is subjected to gradient temperature falling treatment; the sintering treatment satisfies the following conditions: (1) the temperature rising time at a temperature higher than 400 DEG C is not more than 30 min; (2) the sintering temperature is 40 DEG C to 60 DEG C lower than the softening point of the first microcrystalline glass; and (3) the sintering temperature is 150 DEG C to 200 DEG C higher than the initial melting temperature of the glass powder. The method can obtain the microcrystalline glass heating plate with stable heating performance and good bonding strength.

The application relates to a glass for liquid scintillation capillary array and a preparation method and application thereof. The glass components in terms of mole percentage include: 80-85% of SiO2; 0.5-4% of Al2O3; 4.5-8% of B2O3; the sum of K2O and Na2O is 2-8%; the sum of PbO and CdO is 1-2%; 1.5-4% of ZrO2; the sum of KFH2 and K2SiF6 is 1-4%; 0.2-0.5% of BaF2; and 0.5-1% of CeO2. The technical problem solved is how to provide a glass with low refractive index, high softening point, good anti-crystallization performance, good pressure resistance and radiation resistance, so that the glass can be used for preparing a liquid scintillation capillary array.