533 results about "Phosphite ester" patented technology

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

The invention discloses a melt blending preparation process of a semiconductive shielding material for an ultrahigh-pressure crosslinked polyethylene cable, which comprises the following steps: S1, premixing low-density polyethylene and an ethylene-vinyl alcohol copolymer in proportion, the vinyl alcohol chain segment content of the ethylene-vinyl alcohol copolymer being 25%-45%; s2, performing plasma surface treatment on carbon black, and compounding the carbon black with carbon nanotubes to form a conductive filler system; s3, under the protection of inert gas, adding the matrix resin in the step S1 and the conductive filler in the step S2 into a double-screw extruder in stages, and synchronously adding a hindered phenol and phosphite compound antioxidant; and S4, carrying out segmented mixing under the temperature gradient of 160-210 DEG C. Through synergistic compounding of the plasma surface modified carbon black and the carbon nanotubes and in combination with a staged feeding process, directional dispersion of the conductive filler is realized, a three-dimensional interpenetrating conductive network is formed, and the local electric field homogenization capability of the ultrahigh-voltage cable is remarkably improved.

The invention relates to the technical field of high polymer materials, and particularly discloses a fluoride-free halogen-free flame-retardant polycarbonate material and a preparation method and application thereof.The fluoride-free halogen-free flame-retardant polycarbonate material is prepared from, by weight, 70-90 parts of polycarbonate resin, 8-15 parts of phosphorus-nitrogen flame retardant and 3-8 parts of silicon flame-retardant synergist, the composite material is prepared from the following raw materials in parts by weight: 20-30 parts of polypropylene, 2-5 parts of nano reinforcing filler, 0.1-0.5 part of hindered phenol antioxidant, 0.1-0.5 part of phosphite ester antioxidant and 0.1-0.5 part of pentaerythritol stearate. Through the synergistic effect of the composite flame-retardant system and the nanofiller, high flame retardance (UL94 V-0 level, 1.5 mm thickness), high heat resistance (the heat distortion temperature is greater than or equal to 130 DEG C) and excellent mechanical property are realized, the control is easy, the processing is stable, good balance of flame retardance and mechanical property is achieved on the premise of environmental protection, and the composite flame-retardant material is suitable for the fields of high-end household appliances and consumer electronics.

To provide synthetic fibers and a synthetic fiber treatment agent capable of improving heat resistance.SOLUTION: The synthetic fiber treatment agent contains (A) the following smoothing agent, and (B) organic phosphite ester. The smoothing agent contains at least one selected from (A1) a tri-fatty acid ester of glycerin and (A2) a tri-fatty acid ester of trimethylolpropane.SELECTED DRAWING: None

The invention discloses an antistatic agent for polyolefin film material production and a preparation method thereof. According to the invention, through reasonable molecular structure design, raw material selection and synthesis process optimization, the antistatic agent has multiple functions of high-efficiency antistatic property, oxidation resistance, antibacterial property, mechanical property enhancement and the like. The polyolefin material added with the multifunctional antistatic agent has good antistatic performance under different environmental conditions, and the oxidation resistance, the antibacterial property and the mechanical property are also remarkably improved. The antistatic agent has good adaptability with processing of a polyolefin film material and has wide application prospects and market competitive advantages, and the comprehensive performance of the polyolefin film material is remarkably improved through multi-component collaborative design. The composite system of the polyolefin quaternary ammonium salt and the graphene quantum dots strengthens the long-term effect of the antistatic effect, and meanwhile, the synergistic effect of the hindered phenol and the phosphite strengthens the antioxidant stability of the material in the processing and using processes.

A gasoline modifier, a preparation method therefor and a use thereof, and a clean and environmentally friendly gasoline containing same. By volume, the gasoline modifier comprises 10-30 parts of No. 3 or No. 5 white oil, 5-50 parts of a gasoline detergent synergist and 40-85 parts of isooctyl alcohol; the gasoline detergent synergist comprises a stock liquid and a diluent liquid; the stock liquid is a liquid substance formed by mixing 2-ethylhexyl phosphate and etidronic acid in a weight ratio of 1.8-3:1 and heating to perform an esterification reaction; and / or the stock liquid comprises 2-ethylhexanol, phosphite ester, 2-ethylhexyl acetate, polyisobutylene succinic anhydride and ethylhexyl phosphate; the diluent liquid is formed by mixing formaldehyde having a content greater than 99% with oligomeric water clusters in a weight ratio of 1:4-3:7; and the weight percentage of the stock solution in the gasoline detergent synergist is 0.8%-1.3% white oil. The gasoline modifier is a pure petroleum product. When added to gasoline, it can change the physical properties of the gasoline, and achieve the effects of increasing efficiency, saving fuel, removing carbon and reducing emissions.

The invention relates to the technical field of cables, in particular to a high-flexibility ethylene-propylene insulating rubber material for a charging pile cable and a preparation process. The composite material comprises an ethylene propylene diene monomer, a thermoplastic polyolefin elastomer, an ethylene-butylene copolymer, nanoscale magnesium hydroxide, a silane coupling agent, dicumyl peroxide, a hindered phenol antioxidant and a phosphite antioxidant. The ethylene propylene diene monomer and the ethylene-butylene copolymer form a flexible network skeleton, and the ethylene-butylene copolymer and the thermoplastic polyolefin elastomer are subjected to molecular-level blending, so that the elongation at break and the bending fatigue resistance are improved; silane coupling agent modified nano magnesium hydroxide is chemically bonded with a rubber matrix, so that the flame retardance and thermal aging resistance are enhanced, and the negative influence of filler agglomeration on flexibility is reduced; the compound antioxidant system effectively inhibits thermal oxidation degradation at high temperature, avoids insulation failure, realizes collaborative optimization of high flexibility and high heat resistance, and improves the reliability and applicability of the charging pile cable.

The invention provides a PVC (polyvinyl chloride) stabilizer for ultrathin-wall automobile wires and a preparation method of the PVC stabilizer. The PVC stabilizer for the ultrathin-wall automobile wire comprises the following components in parts by weight: 15-25 parts of calcium-zinc composite metal soap, 5-10 parts of hydrotalcite, 3-8 parts of a beta-diketone compound, 2-5 parts of a hindered phenol antioxidant, 1-3 parts of a phosphite ester antioxidant, 2-5 parts of a lubricant, 1-3 parts of an ultraviolet light absorber, 0.5-2 parts of a coupling agent, 4-5 parts of calcined clay and 5-15 parts of filler. According to the PVC stabilizer for the ultrathin-wall automobile wire and the preparation method of the PVC stabilizer, the calcium-zinc composite metal soap, the hydrotalcite, the beta-diketone compound and other stabilizers have a synergistic effect, so that the PVC stabilizer has excellent thermal stability; according to the present invention, the material can effectively inhibit the oxidative degradation of the PVC during the processing and using process, can prolong the service life of the wire, and can provide the good insulation stability through the minimum addition proportion of the calcined clay so as to ensure the thermal stability and the mechanical physical property of the material.

The invention discloses hydrolysis-resistant liquid phosphite ester and a preparation method and application thereof.The hydrolysis-resistant liquid phosphite ester is prepared by the steps that 2, 2, 4-trimethyl-1, 3-pentanediol and phosphorus trichloride or phosphite triester serve as raw materials, a cyclization reaction is conducted firstly, and then the hydrolysis-resistant liquid phosphite ester is obtained; and then carrying out nucleophilic substitution on Cl or aryl and alkyl on the cyclized intermediate by using higher saturated monohydric alcohol with more than C8, wherein the molecular structure is as shown in formula I in the specification. The liquid phosphite ester is novel liquid phosphite ester, the main body of the liquid phosphite ester is of a six-membered ring structure, the basic structure of the phosphite ester is reserved to the maximum extent, and the anti-oxidation effect of the phosphite ester is guaranteed; hydrophobic aliphatic chain structures on phosphorus atoms and branched chains of the phosphorus atoms prevent water molecules from approaching P-O bonds, so that the phosphorus atoms and the branched chains are prevented from being attacked by the water molecules, and the hydrolysis resistance is improved under the conditions that any additional amine hydrolysis-resistant agent is not used and any steric hindrance group is not introduced; good practical value, economic value and market prospect are realized.

The application discloses a kind of high-performance coiled material powder coating and preparation method thereof, belong to powder coating technical field, the application is by the compounding of organosilicon modified epoxy resin and carboxyl-terminated polyester resin, after organosilicon modification, the segment of introduction-Si-O-Si in system has high flexibility, and synergistic effect with nano calcium carbonate, it is helpful to balance the adhesion and flexibility of coating, grafting modification graphene oxide, active chromium oxide is added again, can obviously improve the mechanical strength of coating;After then, phosphite group is grafted onto graphene oxide, and is applied in the present powder coating system, can form three-dimensional network structure in system, chemical bond effect, not only can improve its crosslinking stability in system, and the sheet structure of graphene oxide, also can play certain barrier property, can also give coating longer weather resistance, and active chromium oxide synergistic effect is further improved, and the weather resistance and corrosion resistance of coating.

The invention discloses a colored permanent antistatic PETG material applied to 3D printing. The colored permanent antistatic PETG material comprises the following components in parts by weight: 50-80 parts of a PETG material, 5-20 parts of a PC material, 10-30 parts of a permanent antistatic agent, 5-15 parts of a reinforcing agent, 1-5 parts of a lubricant, 1-5 parts of a compatilizer, 0.1-0.5 part of a coupling agent, 0.1-0.4 part of a hindered phenol antioxidant, 0.1-0.4 part of a phosphite antioxidant, 0.1-0.4 part of a plasticizer and 0.1-0.4 part of toner. The composite material has the beneficial effects that a PETG / PC alloy modification mode is used, so that the heat resistance, the mechanical property and the interlayer adhesive force of the PETG composite material are improved; the high-molecular permanent antistatic agent is used, so that the antistatic capacity of the material is improved under the condition that the color of PETG is not influenced, and the problem that a conventional carbon nanotube / conductive carbon black modified antistatic PETG material cannot be subjected to color matching is solved.

The invention discloses a polypropylene-based composite material and a preparation method thereof, a cable insulation material and a high-voltage cable. The polypropylene-based composite material is prepared from the following raw materials in parts by weight: 80 to 120 parts of polypropylene resin and 0.25 to 0.5 part of antioxidant; the antioxidant comprises a first natural phenol antioxidant or an antioxidant composition containing a second natural phenol antioxidant and a phosphite ester antioxidant. According to the antioxidant composition of the natural phenol antioxidant or the natural phenol antioxidant and the phosphite antioxidant in a specific proportion, the activity of hydrogen atoms in phenolic hydroxyl groups of the natural phenol antioxidant is relatively high, and the natural phenol antioxidant is easily combined with free radicals and the like to generate a stable complex with relatively large steric hindrance, so that the oxygen aging reaction is reduced. The phosphite ester antioxidant captures and neutralizes peroxide to generate stable alcohol or ether so as to reduce the aging rate. Degradation caused by chain scission and oxidation in the processing and using processes of polypropylene can be effectively inhibited, and the electrical performance of the composite material is improved.

The invention discloses a high-performance coiled material powder coating and a preparation method thereof, and belongs to the technical field of powder paints.The high-performance coiled material powder coating has the advantages that organosilicon modified epoxy resin and carboxyl-terminated polyester resin are compounded, a-Si-O-Si-chain segment is introduced into a system after organosilicon modification, the flexibility is high, and the high-performance coiled material powder coating has a synergistic effect with nano calcium carbonate; the adhesive force and the flexibility of the coating are balanced, and the mechanical strength of the coating can be obviously improved by adding the grafted modified graphene oxide and the active chromic oxide; then, phosphite ester groups are grafted to the graphene oxide, the graphene oxide is applied to a powder coating system, a three-dimensional network structure and chemical bonding can be formed in the system, the crosslinking stability of the graphene oxide in the system can be improved, and a certain barrier property can be achieved due to the flaky structure of the graphene oxide; and the coating is endowed with long-acting weather resistance, and the weather resistance and the corrosion resistance of the coating are further improved through the synergistic effect with the active chromic oxide.

In general, a foamed antioxidant masterbatch is disclosed. The foamed antioxidant masterbatch comprises an olefin polymer and one or more organic phosphite antioxidants. The foamed antioxidant masterbatch comprises a cell structure comprising one or more cells. The one or more organic phosphite antioxidants is provided in the one or more cells. The present disclosure is also directed to a method of making a foamed antioxidant masterbatch using a foaming agent and a method of making a polymer composition from the foamed antioxidant masterbatch and a second polymer.

The invention discloses a compound calcium-zinc stabilizer as well as a preparation method and application thereof, and relates to the field of calcium-zinc stabilizers. The calcium-zinc stabilizer comprises calcium stearate, zinc stearate, phosphite ester, an epoxy compound, lanthanum oxide, beta-diketone, a lubricant, an antioxidant and a filler. Uniformly mixing calcium stearate, zinc stearate and lanthanum oxide; adding phosphite ester, an epoxy compound and beta-diketone, and uniformly mixing; and adding the lubricant, the antioxidant and the filler, and uniformly mixing. The calcium-zinc stabilizer is applied to the field of PVC films. By adding calcium / zinc stearate as a main stabilizer and adding lanthanum oxide to be compounded with the main stabilizer, the thermal stability of the PVC film is further improved, and the initial whiteness and light transmittance of the PVC film are obviously improved compared with those of the PVC film in which lanthanum oxide is not added.

The invention provides a high-transparency flame-retardant PMMA (polymethyl methacrylate) material, and belongs to the technical field of high polymer materials. A preparation method of the high-transparency flame-retardant PMMA material comprises the following steps: firstly, synthesizing a nitrogen-phosphorus synergistic flame-retardant monomer; the nitrogen and phosphorus synergistic flame-retardant monomer is a micromolecular derivative which is bifunctionalized by a phosphite group and a methacrylate group and is rich in nitrogen and phosphorus flame-retardant elements; then, carrying out copolymerization reaction on the nitrogen-phosphorus synergistic flame-retardant monomer and a methyl methacrylate monomer to obtain a polymer solution or slurry; and finally, carrying out devolatilization, molding and other subsequent treatments to obtain the high-transparency flame-retardant PMMA material. A flame-retardant structure containing phosphorus and nitrogen elements is introduced into a PMMA molecular chain through a covalent bond, so that the flame-retardant property of PMMA is effectively improved, meanwhile, high transparency of the material is kept, and the flame-retardant effect has a long-term effect.

The invention provides a phosphate-based gel electrolyte, and the phosphate-based gel electrolyte is prepared from a phosphate and / or phosphite monomer containing an acrylate-like structure through an in-situ cross-linking reaction. The network skeleton structure of the phosphate-based gel electrolyte can almost swell all the electrolyte, so that the phenomenon that the non-swelled electrolyte produces an over-thick SEI film on the surface of the lithium metal negative electrode is avoided, and the polarization of the positive electrode is delayed. Meanwhile, a phosphate group in the skeleton provides good flame retardance, and the safety performance of the lithium metal battery cell is improved.

The invention discloses a chemical-resistant PC / PBT alloy material and a preparation method thereof. The chemical-resistant PC / PBT alloy material is prepared from the following components in percentage by mass: 25 to 45 percent of polycarbonate, 20 to 35 percent of polybutylene terephthalate, 3 to 12 percent of maleic anhydride grafted ethylene-acrylate copolymer, 6 to 18 percent of sulfonated polytetrafluoroethylene and 4 to 19 percent of nano silicon dioxide coated silicone microspheres, the composite material is prepared from the following components in percentage by weight: 0.5 to 6 percent of triphenyl phosphate modified graphene oxide, 0.1 to 3.5 percent of bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite, 0.2 to 3.2 percent of vinyl trimethoxy silane and 0.5 to 2.5 percent of mesoporous silicon dioxide; the total mass percentage of the components is 100%. Through component fine SPTFE chain segment regulation and control, core-shell microsphere interface optimization, graphene intercalation modification and process dynamic crosslinking, graded mixing and ultraviolet radiation assistance, the breakthrough improvement of the chemical resistance of the PC / PBT alloy material is realized.

The invention discloses an ethylene glycol-resistant nylon material and a preparation method thereof. The ethylene glycol-resistant nylon material comprises the following raw materials in parts by mass: 100 parts of nylon 66; 30 to 35 parts of glass fiber; 0.8 to 1.4 parts of a silane coupling agent; 6.7 to 9.2 parts of modified graphene oxide; the modified graphene oxide is obtained by modification after transesterification of hydroxyl groups on the surface of graphene oxide and phosphite triester, the phosphite triester modified graphene oxide can enhance the strength of polyamide, on the other hand, the electron cloud effect of the graphene oxide is enhanced through the introduced phosphite ester, and by means of the electron mobility of the phosphite ester, the polyamide can be effectively dispersed in the graphene oxide. The electropositivity of carbonyl carbon in polyamide is weakened, the possibility that carbonyl in polyamide reacts with hydroxyl in ethylene glycol is reduced, and the ethylene glycol resistance of the nylon material is improved; the phosphite ester can also preferentially replace carbonyl carbon in polyamide to react with hydroxyl in ethylene glycol, so that alcoholysis of polyamide is delayed, and the nylon material has excellent strength and ethylene glycol resistance.

There has been a need for a novel lubricating oil composition which has characteristics (for example, scuffing resistance and copper corrosion resistance) that are suitable for lubrication of various mechanisms that are incorporated in a device. The present invention provides a lubricating oil composition which contains (A) a base oil and (B) a phosphite ester that has at least one sulfur atom-containing group having 2 to 20 carbon atoms, the group having at least one —(S) x- group (wherein x is an integer of 1 or more) between two adjacent carbon atoms in the structure of an alkyl group, wherein: the content of a thiadiazole compound is less than 0.05% by mass based on the total amount of the lubricating oil composition; and the kinematic viscosity of the lubricating oil composition at 100° C. is 4.2 mm2 / s or more.

The invention belongs to the technical field of protective films, and discloses a photosensitive dry film protective film and a preparation method thereof. The photosensitive dry film protection film comprises an anti-sticking layer, a middle layer and a release layer, the anti-sticking layer is made of first low-density polyethylene, and the haze of the first low-density polyethylene is 10%-30%; the release layer comprises first linear low-density polyethylene and a release agent; the middle layer comprises second low-density polyethylene, second linear low-density polyethylene, nano silicon dioxide and an antioxidant, the antioxidant is obtained by compounding a hindered phenol antioxidant and a phosphite antioxidant, and the content of the antioxidant is smaller than or equal to 200 ppm. Common polyethylene is used as a main raw material, and nano silicon dioxide is used as a nucleating agent to realize crystal point control; the content of the antioxidant is strictly controlled, the influence of the antioxidant on the photosensitive dry film is reduced, and long-acting oxidation resistance is achieved through a specific hindered phenol antioxidant and phosphite ester antioxidant compound system under the low-content condition.

The invention relates to the technical field of batteries, in particular to molecular cage electrolyte for a sodium ion battery, a preparation method of the molecular cage electrolyte and the battery. The preparation method comprises the following steps: mixing a metal organic polyhedron with a safe solvent, and completing cage-entering coordination to obtain a prefabricated solution; mixing the pre-prepared solution with an electrolyte salt solution to prepare an electrolyte; wherein the metal organic polyhedron comprises at least one of a copper-based cage, a uranium-based cage, a zirconium-based cage, a chromium-based cage, a zinc-based cage, a magnesium-based cage, a rhodium-based cage and a lanthanum-based cage; the safe solvent comprises at least one of a phosphate ester solvent, a phosphite ester solvent, a sulfone solvent, a fluorosulfone solvent, a fluorophosphate ester solvent and a phosphazene solvent; the electrolyte salt solution comprises an electrolyte salt, an organic solvent and a functional additive. According to the electrolyte prepared by the preparation method, the thermal safety performance of the battery can be improved, and the electrochemical performance of the battery can also be improved.

The embodiment of the invention discloses a degradable filling plastic master batch and a preparation method thereof. The degradable filling plastic master batch comprises the following components: a bio-based material, an accelerant, a lubricant, a modifier, an antioxidant, a cross-linking agent and a coupling agent, wherein the bio-based material is polylactic acid; the accelerant is modified starch; the plastic modified material is calcium carbonate; the modifying agent comprises pe wax and / or ebs; the lubricant comprises zinc stearate and POE (Polyolefin Elastomer); the antioxidant is a composition of lignin and phosphite ester; the cross-linking agent is triallyl isocyanate, and / or epoxidized soybean oil; the coupling agent is a silane coupling agent or an aluminic acid coupling agent, can provide the strength of the degradable filling master batch, is not prone to deformation during stretching, has an anti-oxidation effect, is more reinforced and durable, and can achieve the purpose of rapid degradation after waste treatment.

The invention discloses a heat stabilizer, an industrial yarn heat-resistant agent master batch and a preparation method thereof, and a spinning method for modifying polyamide by using the master batch. The heat stabilizer comprises the following components in parts by mass: 10-20 parts of an organic hybrid copper compound containing an amido bond or an amido group or / and 5-15 parts of an inorganic copper compound, and 25-50 parts of a hindered amine light stabilizer containing an amido bond or an amido group, the thermal decomposition temperature of the phosphite ester antioxidant is higher than the spinning processing temperature; the hindered phenol antioxidant is 10-20 parts by mass; the components are compounded in proportion. The heat stability of the polyamide fiber can be improved, the heat resistance and breaking strength retention rate of the fiber are improved, the fiber strength is improved, the spinning performance is improved by improving the stability of the polyamide melt, the end breakage rate in the spinning process is reduced, and the melt pressure is more stable.

The invention relates to a biodegradable composition with low tape casting precipitation as well as a preparation method and application of the biodegradable composition. The biodegradable composition with low tape casting precipitation is prepared from the following components in parts by weight: 69 to 91 parts of polylactic acid, 0 to 16 parts of flexible biodegradable polyester, 0 to 11 parts of filler, 0.1 to 3.1 parts of anti-precipitation agent and 0.1 to 3.1 parts of phosphite ester antioxidant. The anti-precipitation agent and the phosphite antioxidant are added into the biodegradable composition taking polylactic acid as a main body, so that the problem of tape casting precipitation of the biodegradable composition is effectively solved.

The invention provides a polyamide composite material as well as a preparation method and application thereof, and the polyamide composite material comprises the following components in parts by weight: 33-95 parts of polyamide resin, 6-18 parts of a nitrogen flame retardant, 5-15 parts of polyethylene glycol, 0.5-3 parts of an isocyanurate compound containing carbon-carbon double bonds and 0.5-3 parts of a phosphite compound. According to the polyamide composite material disclosed by the invention, the problems of low tracking resistance index and poor impact resistance of a nitrogen-based flame-retardant polyamide composite material in the prior art are solved.

The invention relates to the field of lithium batteries, and particularly discloses a lithium battery electrolyte, a lithium battery and a preparation method of the lithium battery. The lithium battery electrolyte comprises 8-20% of a lithium salt, 70-90% of an organic solvent and 0.01-5% of an electrolyte additive, wherein the electrolyte additive comprises at least one of a phosphite additive, siloxane and a film-forming additive. The lithium battery comprises a positive plate, a diaphragm, a negative plate and the lithium battery electrolyte. By adopting at least one of the phosphite additive, the siloxane and the film-forming additive, oxygen released during lithium removal of the lithium supplementing agent can be absorbed, the capacity, high-temperature circulation and high-temperature storage performance of a battery cell can be remarkably improved, the internal resistance of the battery can be reduced, the problem of gas production in the subsequent charging and discharging process of lithium supplementing of the positive electrode can be solved, and the service life of the battery cell can be prolonged. Therefore, the cycle performance and the service life of the lithium iron phosphate battery are improved.

Disclosed in the present invention are a low-mold-fouling flame-retardant polyamide composite material, a preparation method therefor and a use thereof. The polyamide composite material comprises the following components in parts by weight: 40-60 parts of a polyamide resin; 13-30 parts of aluminum diethylphosphinate; 4-10 parts of a synergistic flame retardant; 15-40 parts of glass fibers; 0.1-5 parts of an ethylene-maleic anhydride copolymer; and 0.1-2 parts of a thermal stabilizing additive. The thermal stabilizing additive is a phosphite ester. The polyamide composite material of the present invention solves the problem of heavy mold fouling of flame-retardant polyamides, has high notched impact strength, and can meet the requirements of industries such as automobiles, electronics, energy storage, and connectors.

The invention relates to a method for preparing aldehyde through butene hydroformylation, which comprises the following steps: dissolving a rhodium catalyst, a phosphite ester ligand and a butene raw material in an amide solvent to obtain a premixed solution, and keeping the premixed solution at 0 DEG C or below; adding the premixed liquid into a mixed atmosphere of hydrogen and carbon monoxide; heating the premixed solution to a preset temperature, and reacting for a preset time to obtain a mixed solution; after the mixed liquid is layered, upper liquid is obtained through liquid separation, an aldehyde product is obtained, and the butene raw material comprises at least one of 1-butene and 2-butene. In the reaction process, a ligand does not need to be supplemented, and the problem of more impurities caused by hydrolysis does not exist.

Bis-phosphites having 2-phenylphenol flanking structural units and their use in hydroformylation.