233results about How to "Halogen-free" patented technology

The invention relates to a method for preparing caprolactone through cyclohexanone catalytic oxidation. The method comprises the following steps that: raw materials, namely cyclohexanone, oxidant, solvent and catalyst, are respectively added to a reaction vessel; the reaction vessel is heated to at a temperature between 40 and 100 DEG C; constant temperature reaction is carried out for 1-15 hours; after the reaction is finished, the raw materials are cooled and separated, and then a finished product of caprolactone can be obtained, wherein the catalyst contains 50-100 percent of zinc oxide and 50-0 percent of other metallic oxide in weight percentage; the solvent is nitrile; the oxidant is hydrogen peroxide or peracetic acid. High caprolactone yield and selectivity can be obtained by adopting the method provided by the invention; meanwhile, the catalyst used in the method is low in price, easy to get and simple to prepare, contains no halogen element, has high stability, and can be used repeatedly.

The invention belongs to a chemical compound field, particularly referring to a resin compound and using the resin compound to coat a metal foil and applying a copper clad laminate made from the resin compound. The invention provides a halogen-free functional resin compound that has an excellent comparison tracking index or leakage resistance tracking characteristic, and a resin coated copper foil that is prepared by using the resin compound to coat a copper foil, namely a complex of the resin compound and the copper foil. The coated clad laminate prepared by the resin copper foil is used and has excellent comprehensive property, with the CTI of which being equal to and more than 400V. The resin compound of the invention overcomes the problems that in the prior art, the coated clad laminate with the CTI being equal to and more than 400V has dry flowers, exposed cloth marks and thickness and precision control, which is caused by the pre-leaching materials or bonding sheets when using reinforcing materials, meanwhile, product halogen free is realized, and the complex material of the resin compound and the copper foil has thinness, long storage period, flexible use and convenient management.

The invention relates to the field of halogen-free flame-retardant electric wire cable shield materials, in particular to a flexible halogen-free flame-retardant polyphenyl ether electric wire cable shield material and a preparation method thereof. The flexible halogen-free flame-retardant polyphenyl ether electric wire cable shield material is characterized by comprising the following raw materials in percentage: 10 to 30 percent of polyphenyl ether resin; 15 to 35 percent of styrene elastomer; 5 to 10 percent of polyolefin; 8 to 15 percent of plasticizing agent; 3 to 8 percent of compatilizer; 15 to 25 percent of main flame retardant; 2 to 8 percent of synergistic flame retardant; 2 to 8 percent of smoke suppressant; 0.5 to 1 percent of lubricant; 0.5 to 1 percent of antioxygen; and 2 to 3 percent of masterbatch. The flexible halogen-free flame-retardant polyphenyl ether electric wire cable shield material has favorable mechanical property, flexibleness, flame retardant property, heat resistance and processability.

The invention relates to a method for synthesizing phosphorous polyester used for fire-retardant electronic packaging materials, aiming to obtain the polyester with high fire resistance to solve the fire-retardant problem of the electronic packaging materials. The method for synthesizing the phosphorous polyester comprises the following steps that: firstly, polylol is added into a four-mouth flask, and the temperature is increased to over 100 DEG C so that the polylol is stirred to be melt; secondly, polyatomic acid / estolide, reactive phosphorous compound and catalyst are respectively added into the molten polylol; the esterification reaction begins and esterifying water is generated and distilled off; thirdly, vacuum-pumping is performed for polycondensation when the esterification rate reaches over 95 percent; fourthly, end capping reagent is added and then the finished phosphorous polyester can be prepared, wherein, the acid value range is between 50 and 250 KOH / g, and the fusing temperature range is between 60 and 130 DEG C. The phosphorous polyester prepared by the method is used for the fire-retardant electronic packaging materials and can realize non-halogenation of the electronic packaging materials.

The invention relates to an antistatic flame-retardant ultra high molecular weight polyethylene composition and a preparation method thereof. An ultra high molecular weight polyethylene composite material with antistatic and flame-retardant properties is prepared through adding flow modifier, polyphenylene oxide, brominated flame retardant, flame retardant synergist, an antistatic component, coupling agent, compatilizer and antioxidant into ultra high molecular weight polyethylene and mixing and pelleting in a double-screw extruder. The application field of the polyphenylene oxide is widened,the cost of a flame-retardant material is reduced, and a favorable antistatic effect is achieved.

The invention discloses a flame-retardant anti-dripping resin compound, consisting of 100 weight portions of thermoplastic resin, 0.01-5 weight portions of modified polytetrafluoroethylene anti-dripping agents and 20 to 40 weight portions of environment-friendly flame retardant containing phosphorus and / or nitrogen. The resin compound has strong anti-dripping effect and heat resisting performance, is level and smooth in exterior appearance, and can endow polyester fiber products with excellent enduring flame retardancy without using halogen (Cl and Br) flame retardant. The resin compound has the advantages of high oxygen index, droplet resistance, low heat release rate, no halogen, little toxicity, low smoke dust emission, little influence on the mechanical properties of base materials, etc.

The invention discloses a process for preparing acicular, flake nano single crystal magnesia-alumina hydrotalcite Mg6Al2(OH)16C.4H2O, and the prepared Mg6Al2(OH)16CO3.4H2O is used as a flame retardant of power electronic devices. Acicular components comprise 0.06-1.41 mol / L crystal magnesium chloride, 0.02-0.47 mol / L aluminum salt, 0.3-4.5 mol / L sodium hydroxide and 0.094-1.368 mol / L sodium carbonate, and flake components are added with modifier basing on the above components. The invention has the process steps that the crystal magnesium chloride and the sodium hydroxide are firstly dissolved in deionized water and heated and stirred, and then the aluminum salt and sodium carbonate are added into the solution, the deionized water and the sodium hydroxide are added every 20 minutes during reaction, the time of reaction is 0.5-2 hours, and the solution is cooled until room temperature and is washed, filtered and dried. The crystal morphology of the prepared acicular nano single crystal magnesia-alumina hydrotalcite is that the diameter is 10-20 nanometer, the length is 60-130 nanometer, the diameter is 25-80 nanometer, and the length is 200-500 nanometer. The crystal morphology of the flake nano single crystal magnesia-alumina hydrotalcite is that the thickness is 10-20 nanometer, the diameter is 50-100 nanometer, the thickness is 20-30 nanometer, and the diameter is 60-200 nanometer. The process for preparation of the invention has short period and simple process, is prepared at atmospheric pressure, and is suitable for industrial production.

The invention discloses a high-temperature self-crosslinking flame-retardant anti-dripping copolyester which is prepared by introducing a structural unit shown as IV in the specification or introducing structural units shown as III and IV in the specification by random copolymerization on the basis of structural units of synthetic polyester shown as I and II in the specification, and the intrinsic viscosity [eta] of the prepared high-temperature self-crosslinking copolyester is 0.25-1.25dL / g. The invention also discloses the preparation method of the high-temperature self-crosslinking copolyester. Because the crosslinking group introduced in the invention is a high-temperature self-crosslinking group, on the premise of not affecting the preparation and forming of the polyester, self-crosslinking can be realized at higher temperature, and the melt viscosity of the polyester is improved through the char formation effect and stable chemical crosslinking of the self-crosslinking group, thereby performing combined action with the phosphorus-containing flame-retardant structural unit IV and endowing the polyester with better flame-retardant and anti-dripping properties.

The invention relates to the field of the communication equipment electrified cleaning agent, in particular to an antistatic environment-friendly communication equipment electrified cleaning agent. The electrified cleaning agent is prepared by mixing the following components by weight: 50-65 parts of dipropylene glycol, 10-20 parts of hexamethylsiloxane or prestoxmethylsiloxane, 2-10 parts of methylsilicone oil, 10-20 parts of SMD-40 solvent oil and 0.01-1 part of an antistatic agent. The communication equipment electrified cleaning agent disclosed by the invention takes the dipropylene glycol as main raw material, other chemical reagents with strong cleaning capability are reasonably cooperated with the main raw material, so that the antistatic environment-friendly communication equipment electrified cleaning agent has good cleaning effect on pollutants on the surface of communication equipment, has the advantages of strong compatibility, no corrosion on materials, such as plastics, paints, metals and the like, high network voltage and volume resistivity, and the function of the communication equipment is free from influence. The antistatic agent used in the antistatic environmental-friendly communication equipment electrified cleaning agent is characterized in that one layer of antistatic membrane is formed on the surface of cleaned equipment to effectively enhance the anti-fouling capability of the equipment. The antistatic environment-friendly communication equipment electrified cleaning agent does not contain substance capable of damaging the ozone layer, is free from halogen and does not have bad influence on the environment.

The invention discloses a phosphorus-containing flame retardant copolyester ionomer and the preparation method, which is characterized in that: based on a plurality of building units synthesizing polyester represented by I and II, a plurality building units represented by IV or a plurality building units represented by III and IV are introduced and the copolyester ionomer is prepared by random copolymerization; wherein, the number of the building units represented by III is 0 to 20 percent of the number of the building units represented by I, the number of the building units represented by IV is 0.1 to 20 percent of the number of the building units represented by I, the number of the building units represented II: the number of the building units represented by [I+III+IV] equals 1, the intrinsic viscosity of the prepared copolyester ionomer [Eta] is in the rang of 0.25 to 0.95dL / g. The phosphorus-containing flame retardant copolyester ionomer has the advantages that: because the ionic groups are phosphorus-containing groups, the flame-retardance modification and the ionization modification of polyester are realized simultaneously; meanwhile, the melt viscosity of polyester is enhanced by the incarbonization produced by the phosphorus-containing ionic groups and the ''physical crosslinking'' produced by the ''ionic aggregate'', thus, the flame retardant and anti-dripping performance is given to polyester.

The invention discloses a phosphorus heterocycle inflaming retarding copolyester ionomer which is formed by introducing structure units represented by III and IV on the basis of polyester structure units represented by I and II and conducting random copolymerization. The intrinsic viscosity [eta]of the phosphorus heterocycle inflaming retarding copolyester ionomer is 0.2-1.1 dL / g. A preparation method of the ionomer is further disclosed. Due to the fact that phosphorus ion groups are introduced, inflaming retarding modification and ionization modification can be simultaneously achieved without adding other fire retardants, carbon formation effect and stable 'physical cross-linking' effect produced by 'iron aggregate' of the phosphorus ion groups improve melt viscosity of high polyester, and simultaneously the polyester has excellent inflaming retarding and molten drop resistance. The ionomer can directly serve as raw materials for preparing fibers, engineering plastics, film and the like.

The invention relates to an epoxy resin composition with excellent flexibility and flame retardance, and a preparation method thereof. The epoxy resin composition is powered and comprises the following ingredients in parts by mass: 20-40 parts of epoxy resin 5-25 parts of flexible flame-retardant polyester curing agent with a star-like branched structure, 0-8 parts of other curing agent, 0.05-0.3 parts of curing accelerant, 5-25 parts of flame-retardant synergist, and 30-50 parts of inorganic filler. The epoxy resin composition relating in the invention does not contain halogen and antimonous oxide, has excellent flexibility and flame retardance, not only can realize the halogen-free flame retardance of an electronic packaging material, but also can endow the electronic packaging material with excellent flexibility after being used for the field of the electronic packaging materials, so that the cold and hot impact resistance of the electronic packaging material can be improved greatly.

The invention provides a resin composition for an insulation film, and the insulation film and a circuit board containing the same. The resin composition comprises: (A) 100 parts by weight of epoxy resins; (B) 20 to 100 parts by weight of a polybutadiene styrene divinylbenzene graft terpolymer resin; (C) 2 to 20 parts by weight of di-tert-butylhydroquinone; (D) 5 to 50 parts by weight of a polyphenylene ether modified cyanate ester resin; and optionally containing at least one of the following components: (E) an inorganic filler, (F) a refined extending sealing agent and (G) a catalyst. By containing the specific components and proportions, the resin composition can achieve high heat resistance, low dielectric constant and low dissipation factor, and is halogen-free, and thus the resin composition can be applied in a protection film of a printed circuit board, an insulating protection film of an electronic building brick or a resin insulation film of a lead frame.

The present invention relates to a nano-Mg-Al hydrotalcite fire-retardant EVA foaming material comprising, by weight, 60-90 parts of an ethylene-vinyl acetate copolymer with 10-22wt% of VA, 2-10 parts of a foaming agent, 0.5-1 part of a foaming accelerator, 0.3-5 parts of a coupling agent, 0.5-1 part of a crosslinking agent, 10-50 parts of a flame retardant and 0.5-2 parts of a releasing agent, and the flame retardant is nano-Mg-Al hydrotalcite. Compared with traditional metal hydroxide flame retardants, the nano-Mg-Al hydrotalcite has great advantages in improvement of the limiting oxygen index, improvement of vertical combustion performances and reduction of heat release rate and other flame retardant aspects, and is better fire-retardant inhibitor. The present invention also provides a preparation method of the foaming material, and the method is simple to operate, the foaming process is not needed to be further modified or changed, production cost can be reduced, and energy can be saved.

The invention provides a flexible halogen-free high-thermal conductivity resin-coated copper foil comprising a copper foil and a halogen-free resin layer located on one surface of the copper foil, wherein the halogen-free resin layer is prepared by utilizing a halogen-free thermosetting glue solution which comprises the following components in percentage by solid weight: 10-40% of flame-retardant epoxy resin, 0.1-8% of curing agent, 0.01-0.5% of curing accelerator, 5-20% of rubber, 20-40% of solvent and 30-60% of padding. The invention also provides a method for manufacturing the flexible halogen-free high-thermal conductivity resin-coated copper foil by using the resin glue solution prepared through the formula. The flexible halogen-free high-thermal conductivity resin-coated copper foil manufactured by using the formula and the manufacturing method provided by the invention has the characteristics of folding resistance, high flexibility, excellent heat-conducting property, green and environmental protection, no halogen and flame retardance and can be suitable for the preparation of not only metal-based flexible copper clad laminates but also metal-based rigid copper clad laminates.

The invention provides a high-temperature resistant wear-resistant irradiation cross-linked regenerated-polyolefin / nano-magnesium-hydroxide halogen-free flame-retardant environmental-friendly cable material with high electric properties. The cable material is used for products comprising power cables, mine cables, marine cables, electric equipment lines, locomotive and vehicle cables, and the like. The cable material is produced from following raw materials by weight: 30-40 parts of a regenerated polyolefin, 40-50 parts of a compatilizer, 15-20 parts of an ethylene-propylene-diene monomer (EPDM), 120-150 parts of a nano flame retardant, 3-5 parts of an antismoke agent, 3-3.5 parts of a sensitizer, 1-2 parts of a coupling agent, 1.0-1.5 parts of an antioxidant, 1.5-2 parts of a lubricant and 0.8-2.5 parts of a colorant. According to the cable material and the production method, waste and old plastics are used as the raw materials and an irradiation cross-linking technology and an nano new material are employed, and therefore the cable material has good comprehensive performances comprising high-temperature resistance, wear resistance, high electric properties, oil resistance, high strength, less smoke, no halogen, high flame retardance, good fluidity, etc., and the environmental performance of the cable material meets the requirements of electric wires and cables.

A circuitized substrate including a dielectric layer having a p-aramid paper impregnated with a halogen-free, low moisture absorptivity resin and not including continuous or semi-continuous fiberglass fibers as part thereof, and a first circuitized layer positioned on the dielectric layer. A method of making this substrate is also provided.

The invention discloses a halogen-free epoxy resin composition and application thereof. The epoxy resin composition comprises the following components: (A) halogen-free epoxy resin; (B) styrene-maleic anhydride copolymer (SMA) used as a first curing agent; (C) phosphorus-containing compound used as a second curing agent; and (D) cyanate or / and cyanate prepolymer. The high-frequency circuit substrate using the epoxy resin composition comprises one or more pieces of mutually superimposed prepreg and copper foils respectively coated on two sides, wherein the prepreg comprises a base material and the halogen-free epoxy resin composition which is attached to the base material by immersing and drying.

The invention discloses a water-base halogen-free no-clean scaling powder used for lead-free solder. The water-base halogen-free no-clean scaling powder used for lead-free solder comprises, by weight, organic acid activating agent 2.0%-8.0%, alkyl alcohol amine 0.5-1.0%, cosolvent 8-25%, surface active agent 0.1-1.0%, corrosion inhibitor 0.2-0.8%, film-forming agent 2.0-5.0%, antibacterial agent 0.05-0.25%, and the balance deionized water. The scaling powder is long in term of protection, free of rosin and halogen, low in solid content and good in wettability, no residual is left after welding, requires not cleaning, is full and bright in welding points, and has no corrosion in copper mirror test; and surface insulation resistance of a substrate is larger than 108 Omega, and the substrate is low in cost, good in reliability and suitable for electronic material lead-free solder.

The invention discloses scaling powder for lead-free solder paste. The scaling powder for the lead-free solder paste comprises, by weight, 35.0%-45.0% of colophony, 2.0%-5.0% of activating agent, 3.0%-8.0% of thixotropic agent, 1.5%-3.0% of surface active agent and 0.1%-1.5% of corrosion inhibitor, the other part is solvent. The scaling powder for the lead-free solder paste is wide in viscosity range, good in activity and strong in high temperature oxidation resistance, no halogen residues exist on a welded base plate, washing is not needed, insulation resistance is beyond 108 ohms, and the scaling powder for the lead-free solder paste can be widely applied to the field of welding of electronic materials.

The invention relates to a high-temperature vulcanized silicone rubber sealing strip. The vulcanized silicone rubber sealing strip is mainly prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl raw silicone rubber, 10-100 parts of a modified inorganic flame-retardant agent, 0.1-1 part of a platinum-containing flame-retardant catalyst, 20-80 parts of reinforcementfiller, 5-10 parts of a structure control agent, 0.2-1 part of a cross-linking agent, 0.01-0.1 part of an inhibitor and 0.5-3 parts of color masterbatch, wherein the modified inorganic flame-retardant agent is prepared from tetramethyldivinyldisilazane and aluminum hydroxide; the platinum-containing flame-retardant catalyst is prepared from chloroplatinic acid, octanol, fumed silica and vinyl-terminated polydimethylsiloxane. The high-temperature vulcanized silicone rubber is excellent in flame-retardant property and excellent in mechanical property.

A circuitized substrate including a dielectric layer having a p-aramid paper impregnated with a halogen-free, low moisture absorptivity resin and not including continuous or semi-continuous fiberglass fibers as part thereof, and a first circuitized layer positioned on the dielectric layer. A method of making this substrate is also provided.

The invention discloses a protective film for chip cutting. The protective film sequentially comprises a releasing layer, a substrate layer and an adhesive layer, wherein the substrate layer is made of modified PO (propylene epoxide) material; the modified PO material is prepared by copolymerizing PP (polypropylene) and PE (polyethylene); the modified PO material is prepared from the following components in parts by weight: 50 to 70 parts of PP, 20 to 40 parts of PE, and 5 to 10 parts of talcum powder. The protective film has the characteristics that the substrate layer adopts the modified POmaterial, so that the mechanical strength is high, the halogen is avoided, and the environment-friendly requirement is met; the heat-resistant property is better, and the certain high-temperature operation requirement is met; the plasticizer is not contained, so that the risk of micromolecule segregation is avoided for the material; the material strength is high, the ductility is good, the uniformshrinkage rate in each direction is maintained under the condition of 140% of elongation rate, and the uniform strength in each direction is realized at the premises of certain elongation rate; the adhesive layer uses pressure-sensitive adhesive to replace the photo-sensitive adhesive and thermo-sensitive adhesive, the transparency degree is high, the weather-resistant property is high, TG is about -20 DEG C, and the procedures are simple (no UV (ultraviolet) furnace passing or reheating procedure); by performing simple laminating and separating, the product application requirement can be met, the change of viscosity duration is small and is less than 20%, and the residual adhesive is avoided.

The invention discloses an optical-fiber composite low-voltage intelligent cable used in coal mine. The optical-fiber composite low-voltage intelligent cable comprises: an insulation core, a fiber unit and a control cable unit. The cable is characterized in that: rubber strip fillers are filled in gaps between the insulation core, the fiber unit and the control cable unit; a taped covering, a fire protection layer and an over sheath are successively arranged out of the insulation core, the fiber unit, the control cable unit and the rubber strip fillers. The optical-fiber composite low-voltageintelligent cable of the invention has good fireproof performance, a mechanical property, an insulating property, a flame retardant property and an acid-resisting / alkali-resisting anticorrosion performance, and possesses low costs and a fiber communication function.

The invention discloses a novel phosphorous siliciferous flame retardant comprising repeated structural units shown in a figure, wherein m ranges from 2 to 4, and n ranges from 5 to 8. The invention further discloses a preparation method for the novel phosphorous siliciferous flame retardant. The phosphorous siliciferous flame retardant disclosed by the invention contains a bis-spiral structure and a DOPO lateral group, can be used for polyolefin cable materials to endow the polyolefin cable materials with very excellent flame retardant property. Besides, compared with the traditional flame retardant, the novel phosphorous siliciferous flame retardant has the characteristics of zero halogen, low smoke, low toxicity, environmental friendliness and the like, and is suitable for polymer materials such as plastic, rubber, fiber and the like.

The invention relates to a flexible epoxy resin composition with a hyperbranched structure and a synthesis method thereof. The flexible epoxy resin composition comprises the following ingredients in parts by weight: 25-40 parts of epoxy resin, 15-20 parts of a hyperbranched polyester curing agent, 0-5 parts of other curing agents, 0.05-0.3 part of a curing accelerator and 30-55 parts of an inorganic filler. After the hyperbranched polyester curing agent is added, the synthesized polyester curing agent is applied to an epoxy electronic packaging material, the flexibility is excellent, the crosslinking density and the strength are large, the electronic packaging material is free of halogen, the machinability, the physical properties and the electrical property of the electronic packaging material are optimized, and the flexibility applied to the electronic packaging material is excellent, so that the cold and thermal shock resistances of the electronic packaging material is largely improved.

The invention discloses a UV (ultraviolet) curing ink and application thereof. The UV curing ink comprises the following components in percentage by weight:30-40% of high-functionality polyurethane acrylate, 10-20% of dual-functionality polyurethane acrylic resin, 5-10% acidic acrylate prepolymer, 5-10% of thermoplastic acrylic resin, 10-15% of 1,6-hexanediol diacrylate and 2-4% of photosensitizer. When being printed on a glass workpiece, the UV photocuring ink is used for temporary protection in the glass surface working process. After the UV photocuring ink is subjected to UV photocuring, a tough ink layer, which has the advantages of favorable adhesion to glass, high surface hardness, favorable scratch resistance and favorable cutting fluid resistance, can be formed on the glass surface, and can effectively ensure the glass not to be scratched in the surface working process. After finishing the glass working, alkaline water can quickly remove the UV photocuring ink layer, so that the glass can not be influenced.

The invention discloses a calcium carbonate and aluminum magnesium composite flame-retardant paper, and a preparation method thereof. The invention aims at solving the problems of low flame-retarding effect, poor corrosion resistance, high preparation cost, and environment pollution of prior arts. The invention adopts the following realization scheme: a 1.62-7.02mol / L hydroxide ion suspension liquid is added into a prepared mixed liquid of a 0.42-1.82mol / L magnesium ion solution, a 0.18-0.78mol / L aluminum ion solution and a 0.24-1.04mol / L sodium carbonate suspension liquid; heating and stirring, precipitation and washing are sequentially carried out, such that calcium carbonate and aluminum magnesium nano-grade multiphase precipitate is obtained; waste shredded paper is added into the multiphase precipitate; heating and stirring are carried out, such that flame-retardant paper pulp is obtained; and water removing and air-drying are carried out, such that the calcium carbonate and aluminum magnesium composite flame-retardant paper is obtained. The flame-retardant paper has the advantages of good flame-retarding effect, no corrosion, no pollution and low preparation cost. The flame-retardant paper can be used in the construction industry of large office occasion indoor decoration, packaging, and fire prevention.

The invention relates to a flexible flame-retardant polyester curing agent with a star-like branched structure, and a synthesis method thereof. The flexible flame-retardant polyester curing agent with the star-like branched structure is prepared by controlling the conditions such as proportion of polyalcohols, polyprotic acid, hexa(4-carboxyl phenoxyl)cyclotriphosphazene and catalyst, reaction temperature, reaction time and the like through adopting segmental synthesis technology, the acid value ranges from 120mgKOH / G to 260mgKOH / G, the melt viscosity ranges from 1500mPa.s / 150DEG C to 6000mPa.s / 150DEG C, and the softening point ranges from 60 DEG C to 110 DEG C. the synthesis method is simple in steps and stable to produce, the prepared polyester resin has the characteristics of being low in viscosity, high in functionality, free from chain winding, good in solubility, excellent in flame retardance and the like, not only can realize the non-halogenation of an electronic packaging material, but also can endow the electronic packaging material with excellent flexibility when being used for the electronic packaging materials, so that the cold and heat impact resistance of the electronic packaging material can be greatly improved.