822 results about "Phenyl sulfide" patented technology

The invention belongs to the technical field of polymer plastic materials, and particularly relates to a high-temperature-resistant anti-corrosion polytetrafluoroethylene material and a preparation method thereof. The polytetrafluoroethylene is prepared from the following raw materials in parts by weight: 50 to 60 parts of polytetrafluoroethylene, 5 to 10 parts of fluorinated modified graphene oxide, 3 to 5 parts of aluminum powder, 5 to 8 parts of modified silicon carbide fiber, 3 to 5 parts of silane modified nano silicon dioxide, 2 to 3 parts of polyphenylene sulfide, 2 to 3 parts of polyimide, 0.5 to 0.8 part of dispersing agent and 0.5 to 1 part of antioxidant. The heat conduction performance and the interface bonding force are improved through the fluorinated modified graphene oxide, the impact resistance and the wear resistance are enhanced through the silicon carbide fibers, and the corrosion resistance and the wear resistance are improved through the aluminum powder; silane modified silicon dioxide enhances the mechanical property of the composite material by improving the dispersity of the filler, and PPS and PI interact with the surface of the filler through polar groups in molecular chains, so that the interface strength is improved, and the toughness and the thermal stability are improved.

The present invention provides a polyphenylene sulfide resin and a method for preparing the same, the polyphenylene sulfide resin being obtained by measurement based on gel permeation chromatography using polystyrene as a conversion reference, in a differential molecular weight distribution curve using the logarithm value ln (M) of the molecular weight M as the horizontal axis and dw / dln (M) obtained by differentiating the concentration percentage w by the logarithm value ln (M) of the molecular weight as the vertical axis, the ratio of the value obtained by integrating dw / dln (M) at 6.90 < = ln (M) < = 9.21 with respect to the value obtained by integrating dw / dln (M) over the entire range of ln (M) is less than 5%. The preparation method of the polyphenylene sulfide resin is characterized in that a sulfur source, an alkali metal hydroxide and a dihalo aromatic compound are used as raw materials and subjected to a polymerization reaction in an organic polar solvent, and when the conversion rate of the dihalo aromatic compound is larger than 50%, materials passing through an external circulation pipeline are in a turbulent flow state so as to strengthen the mixing effect of a polymerization system; the polyphenylene sulfide resin can be prepared with high yield by inhibiting the generation of oligomer ultrafine powder waste. The method provided by the invention can significantly reduce the generation amount of oligomer ultra-micro powdery waste in the polyphenylene sulfide polymerization process.

An optical connector ferrule is a member inside which an optical fiber is secured, and a tip side thereof serves as a connection end surface for an optical fiber. The optical connector ferrule is formed by injection molding, for example, and is formed from polyphenylene sulfide (PPS) resin that contains a filling material (e.g., inorganic fibers or a filler). An internal space is communicated with the tip side of the optical connector ferrule and serves as a hole into which the optical fiber is inserted. Here, the 260° C.×1 minute shrinkage factor of the optical connector ferrule in the present embodiment is 0.13% or less.

The invention relates to the technical field of cables, and provides a corrosion-resistant overhead cable which sequentially comprises a conductor, an insulating layer, a shielding layer, a lining layer and an outer sheath layer from inside to outside. The outer sheath layer comprises the following raw materials in parts by weight: 60-70 parts of polyethylene, 20-30 parts of an ethylene-vinyl acetate copolymer, 10-15 parts of polyphenylene sulfide, 25-35 parts of a flame retardant, 0.5-1 part of an antioxidant, 2-3 parts of a lubricant, 3-5 parts of a compatilizer and 15-25 parts of a rectorite / tungsten carbide composite material; the mass ratio of rectorite to tungsten carbide is (1: 9)-(9: 1). According to the technical scheme, the problem of poor corrosion resistance of the overhead cable in the prior art is solved.

The invention discloses a harmonica-shaped tube and a preparation method thereof, a liquid cooling plate, a battery and electric equipment. The harmonica-shaped tube is made of a polyphenylene sulfide composition, and the polyphenylene sulfide composition comprises polyphenylene sulfide resin and a toughening agent; the flexibilizer includes a copolymer of an olefin and a glycidyl ester. According to the application, the polyphenylene sulfide composition is used as the material of the harmonica-shaped tube, so that the occurrence of the conditions that the extruded material is easily broken, the extrusion process is not smooth and the like in the extrusion molding process of the harmonica-shaped tube is reduced; the harmonica-shaped tube has good mechanical strength, deformation resistance, corrosion resistance, heat resistance, heat dissipation performance, creep resistance and the like, the risk that cracking occurs when the harmonica-shaped tube is extruded in the working condition using process is reduced, and the production capacity and the product quality are improved.

The utility model discloses a waste salt pyrolysis device for polyphenylene sulfide production, particularly relates to the technical field of waste salt pyrolysis, and mainly comprises a pyrolysis box body and a feeding box, the feeding box is positioned at the top end of the pyrolysis box body and is welded and communicated with the pyrolysis box body, a plurality of extrusion racks are arranged in the feeding box, a plurality of counter-pressing racks are arranged on one side of the extrusion racks, and the counter-pressing racks are arranged on the other side of the pyrolysis box body. Inclined pressing plates are fixedly connected to the opposite sides of the extrusion rack and the opposite pressing rack correspondingly, and linkage extrusion assemblies are installed on one sides of the inclined pressing plates. The linkage extrusion assembly comprises a groove linkage rod installed on one side of the inclined pressing plate. Through the arrangement of the linkage extrusion assembly, waste salt is poured into the feeding box, the sleeving supporting block enables the concave supporting block to move synchronously in the moving process, the two groove linkage rods can move towards the interior of the feeding box synchronously, and the waste salt can be extruded and smashed in a reciprocating mode on the two inclined pressing plates; it is avoided that caked waste salt is difficult to fully heat, pyrolysis operation is achieved, and efficient and sufficient pyrolysis is achieved.

The invention relates to the technical field of process control, in particular to a polyphenylene sulfide polymerizer temperature self-adaptive control method, which comprises the following steps: acquiring melt viscosity, heat release power and residence time deviation of a polymerizer in real time, and constructing a normalized multi-dimensional time sequence input vector by using a sliding window technology; and then, through fusing a weight control model of a long short-term memory network and an attention mechanism, combining static working condition characteristics, and analyzing and outputting adaptive weight coefficients for different deviation dimensions in real time. Meanwhile, based on the shear heat effect and the reaction accumulation effect, specific temperature compensation components for the inlet of the heating medium jacket are calculated, and independent amplitude limiting processing is carried out on all the components. And finally, a target set temperature is synthesized through weighting, and an execution mechanism is driven to act accurately by utilizing cascade PID control and a valve flow characteristic inverse mapping model. According to the invention, through deep fusion and mechanism compensation, accurate steady-state control of the polymerization reaction is realized.

The invention relates to an electromagnetic shielding resistant PPS alloy material containing modified carbon nanotubes, and belongs to the technical field of polymer composite materials. The PPS alloy material comprises 70-85 parts of polyphenylene sulfide, 5-15 parts of polyether-ether-ketone or a liquid crystal polymer, 3-8 parts of carbon nanotubes subjected to acyl chloride-amido double-step modification and 5-12 parts of carbon fibers subjected to oxidation treatment, and the carbon fibers subjected to oxidation treatment are covalently connected with the carbon nanotubes subjected to double-step modification. 0.5 to 1.5 parts of a coupling agent, 0.3 to 0.8 part of an antioxidant and 0.2 to 0.6 part of a lubricant. According to the invention, the carbon nanotubes are subjected to surface grafting group modification, and the carbon fibers are subjected to surface oxidation treatment, so that the technical problems that the carbon nanotubes are easy to agglomerate, the interface between the carbon fibers and the matrix is weak, and the shielding efficiency and the mechanical property are difficult to consider are solved, and the carbon nanotubes and the PPS matrix form a composite reinforced structure; the comprehensive improvement of the material in the aspects of electromagnetic shielding, mechanical property, thermal stability and the like is realized.

The invention discloses a stainless steel material for a food-grade straw and a preparation process of the stainless steel material, and relates to the technical field of stainless steel material plating. The silver coating and the antibacterial coating are arranged on the surface of the stainless steel material, and the stainless steel material has good wear resistance and antibacterial performance through the action of the double protective layers. Sulfonated polyphenylene sulfide is added into a silver plating solution, a plating layer is formed after electroplating, the surface of a stainless steel material is not prone to being scratched, the wear resistance of stainless steel is improved, quaternary ammonium salt modified tea polyphenol-nano-silver composite particles are added into the antibacterial coating, and through the synergistic antibacterial effect of quaternary ammonium salt, tea polyphenol and nano-silver, the wear resistance of the stainless steel material is improved. The broad-spectrum antibacterial property is realized, and the efficient antibacterial effect is achieved.

The invention relates to the technical field of composite materials, in particular to a PTFE composite material for a shaft sleeve and a preparation method of the PTFE composite material. The PTFE composite material for the shaft sleeve consists of the following raw materials in parts by weight: 80-140 parts of polytetrafluoroethylene powder, 3-8 parts of polyphenylene sulfide, 8-12 parts of modified glass fibers and 10-15 parts of a reinforcing agent. The lubricating property of a base material is effectively improved by adding the modified glass fiber, and meanwhile, the wear resistance and the mechanical property of the polytetrafluoroethylene composite material are favorably improved by improving the tribological property, enhancing the mechanical strength and improving the interface bonding and load dispersion through the reinforcing agent.

The invention provides an alkali metal group ion selective permeable membrane, a preparation method and a lithium, rubidium and cesium extraction method and system, and the membrane is prepared by taking polyphenylene sulfide, Zr (HPO4) 2 and a high-molecular polymer adhesive as raw materials through mixing, fibration treatment and compression molding processes. Based on the weak dipole adsorption characteristic between the sulfur position of high-crystallization polyphenylene sulfide and alkali metal cations, efficient screening of monovalent alkali metal ions (Li < + >, Rb < + > and Cs < + >) and multivalent impurity ions (Mg < 2 + >, Al < 3 + > and Fe < 2 + >) is achieved, and the method can be used for extracting rubidium and cesium. The ion selective permeable membrane has excellent mechanical properties, high separation efficiency and corrosion resistance, and is low in production cost; and finally, the multiple targets of lepidolite leaching liquid impurity removal and lithium rubidium cesium synergistic extraction are achieved.

The invention provides a polymer alloy material, a preparation method thereof and a flow cell panel frame, and belongs to the technical field of high polymer materials. The polymer alloy material comprises the following components: 25-80% of polyolefin, 10-20% of engineering plastic, 1-5% of a compatilizer, 5-50% of an inorganic filler and 0.1-5% of an auxiliary agent. Wherein the engineering plastic is selected from one or more of a styrene methyl methacrylate copolymer, a styrene-butadiene methyl methacrylate copolymer, polycarbonate, polyphenyl ether, polyphenylene sulfide, a styrene-maleic anhydride copolymer or a styrene-acrylonitrile copolymer. The polymer alloy material forms a bicontinuous phase structure with'sea-sea 'microscopic dispersion characteristic and tight interface bonding, can simultaneously have the characteristics of excellent heat resistance, corrosion resistance, high flow, low shrinkage, high modulus and the like, and makes up for the defect of insufficient performance of the existing liquid flow cell panel frame plate PP material.

The invention relates to high-wear-resistance plastic particles and a preparation method thereof, and belongs to the technical field of high polymer materials. The high-wear-resistance plastic particles comprise the following components in parts by weight: 60-80 parts of polyphenylene sulfide, 1-4 parts of a lubricant, 0.1-0.5 part of an antioxidant, 20-40 parts of glass fibers, 1-4 parts of a modified flame retardant and 5-15 parts of a high-temperature-resistant toughening agent, the high-wear-resistance plastic particle prepared by the invention not only has a good flame-retardant effect, but also has excellent high-temperature-resistant and toughening effects.

The invention relates to the technical field of polymer composite materials, in particular to a carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material and a preparation method thereof.The carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material is prepared from, by weight, 40-55 parts of nylon 66, 30-45 parts of polyphenylene sulfide, 15-30 parts of carbon fibers, 5-6 parts of compatilizer, 0.8-1.2 parts of antioxidant and 3-4 parts of flexibilizer, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 1.2-1.5%, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 0.8-1.0%, and the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1: 1. The composite material prepared by the invention is suitable for medium-high temperature scenes, not only solves the problems of insufficient high temperature resistance and poor mechanical properties of traditional materials, but also has good processability and environmental tolerance.

The invention discloses a PPS high-strength temperature-resistant composite material, preparation thereof and application of the PPS high-strength temperature-resistant composite material in a humanoid robot. The composite material comprises the following raw material components: 35-55 parts by mass of polyphenylene sulfide, 20-40 parts by mass of a composite reinforcing agent, 2-8 parts by mass of a flexibilizer, 3-9 parts by mass of a conductive agent, 3-7 parts by mass of potassium titanate whiskers, 0.2-0.5 part by mass of a coupling agent and 0.1-1 part by mass of an antioxidant, and the composite reinforcing agent comprises more than two reinforcing agents with different forms and / or sizes. The obtained PPS high-strength temperature-resistant composite material is subjected to multi-scale enhancement and multifunctional modification on the basis of a PPS material, the performance limitation of an existing PPS material can be broken through, and powerful material support is provided for high-performance and intelligent development of humanoid robots.

The invention provides a carbon fiber reinforced acid and alkali resistant PPS material. The carbon fiber reinforced acid and alkali resistant PPS material comprises the following components in parts by mass: 40-80 parts of PPS, 5-10 parts of modified carbon fiber, 1-5 parts of modified glass fiber, 1-5 parts of a coupling agent, 1-5 parts of an antioxidant and 1-10 parts of a lubricant. The modified carbon fiber provided by the invention has a polyphenylene sulfide structure and a star-shaped structure, has good compatibility with other components, and can form a more regular and compact three-dimensional net structure with other components, so that the stability of a product is enhanced, and a plurality of properties such as mechanical properties, acid and alkali resistance and the like are improved. Meanwhile, by introducing a polyphenylene sulfide structure and a benzyl alcohol structure into the modified glass fiber, the interfacial compatibility and bonding strength are effectively improved, the compatibility with other components is enhanced, and the components are combined more tightly, so that the dispersity and stability of the system are further enhanced, and the performance of the PPS material is improved.

The invention discloses a modified PPS fiber filter material and a preparation method thereof, and belongs to the technical field of filter materials. Comprising the following raw materials in parts by weight: 60-80 parts of PPS resin, 6-18 parts of modified boron carbide and 10-20 parts of an ethylene-octylene copolymer. The filter material prepared by the invention takes polyphenylene sulfide as a matrix, so that the filter material is endowed with excellent strength, high temperature resistance and corrosion resistance; wherein the ethylene-octylene copolymer can improve the toughness of the filter material; wherein the modified boron carbide is good in compatibility with a matrix, the oxidation resistance, the heat resistance and a certain degree of mechanical properties of the filter material can be remarkably enhanced, and the properties are long and stable; therefore, the filter material prepared by the invention is excellent in corrosion resistance, also has stable and efficient oxidation resistance, heat resistance and mechanical properties, and has important application value in the technical field of filter materials.

The invention discloses an insulating heat-conducting glass fiber reinforced polyphenylene sulfide composite material and a preparation method thereof. The composite material comprises the following raw material components: 30-50 parts by mass of polyphenylene sulfide, 10-20 parts by mass of glass fiber, 30-50 parts by mass of a heat-conducting filler, 5-10 parts by mass of a compatilizer and 0.3-1 part by mass of a coupling agent, and the heat-conducting filler is selected from one or more of graphite, silicon carbide, aluminum oxide, magnesium oxide, aluminum nitride and hexagonal boron nitride; the compatilizer is selected from a glycidyl methacrylate graft polymer. The polyphenylene sulfide composite material prepared by the preparation method disclosed by the invention has high insulativity, high thermal conductivity and good mechanical properties.

The invention discloses polyphenylene sulfide resin and a preparation method thereof. The weight-average molecular weight of the polyphenylene sulfide resin is 20000-50000, the molar ratio of a sulfydryl terminal group to a chlorine terminal group is 1-9, and the content of the chlorine terminal group is 15-60 [mu] mol / g. In the preparation method of the polyphenylene sulfide resin, a sulfur source, an alkali metal hydroxide and a dihalogen aromatic compound are taken as raw materials and subjected to a polymerization reaction in N-methyl pyrrolidone, and self-blocking is performed by accurately controlling the adding time of the dihalogen aromatic compound, so that controllable adjustment of an active end group is realized. The polyphenylene sulfide resin provided by the invention has excellent processability, and has excellent reactivity with silane coupling agents such as gamma-aminopropyltriethoxysilane and the like.

The invention relates to the field of wear-resistant materials, and provides a thermoplastic wear-resistant composite material as well as a preparation method and application thereof, and the thermoplastic wear-resistant composite material comprises the following raw materials in parts by weight: 65-75 parts of polytetrafluoroethylene, 25-35 parts of polyphenylene sulfide, 3-7 parts of modified aramid fiber and 1-5 parts of modified molybdenum disulfide. The thermoplastic wear-resistant composite material provided by the invention has the characteristics of good wear resistance, low friction and high toughness, and can be widely applied to wear-resistant parts related to pump bodies and bearings.

The invention relates to the technical field of polyphenylene sulfide resin composite material extrusion, and discloses a polyphenylene sulfide resin composite material extrusion molding device which comprises a bottom plate and further comprises a feeding pipe horizontally and fixedly arranged above the bottom plate; the hollow disc communicates with the top end of the feeding pipe, and the side face, away from the feeding pipe, of the hollow disc communicates with a discharging head; the rotating disc is rotationally mounted in the hollow disc, four circular grooves which are annularly and uniformly distributed are formed in the side face of the rotating disc, and filter discs are arranged in the four circular grooves; the replacing and cleaning assembly is arranged at the top of the bottom plate, and the replacing and cleaning assembly is used for cleaning the blocked filter disc while replacing the blocked filter disc. According to the device, the replaced filter disc can be cleaned, impurities on the surface of the filter disc can be cleaned during cleaning, impurities in the pore diameter of the filter disc can also be cleaned, the effect when the filter disc is used again is guaranteed, and then the using effect of the device is improved.

The invention provides a polyphenylene sulfide-based magnetic material as well as a preparation method and application thereof. The polyphenylene sulfide-based magnetic material comprises linear polyphenylene sulfide, magnetic powder, phenyl silicone resin, hyperbranched polyphenylene sulfide and a lubricant. The phenyl silicone resin is added to improve the binding force between the magnetic powder and polyphenylene sulfide at high temperature, the hyperbranched polyphenylene sulfide is added to modify the structure of linear polyphenylene sulfide, the strength and toughness of the polyphenylene sulfide-based magnetic material are improved, the lubricant is added to improve the fluidity, and the magnetic material has good mechanical properties. The prepared polyphenylene sulfide-based magnetic material has the characteristics of high strength, good toughness and good fluidity.

The present invention relates to the technical field of flue gas purification, and discloses a polyphenylene sulfide production waste salt treatment flue gas purification apparatus, which comprises a treatment barrel, and further comprises: a hollow disc fixedly mounted in the treatment barrel; the rotating disc is rotatably mounted in the hollow disc, four second circular grooves which are through and are annularly arranged are formed in the top of the rotating disc, and activated carbon nets are mounted in the four second circular grooves; the timing components are arranged inside and outside the treatment barrel; and the switching assembly is arranged in the treatment barrel. In the using process, the blocked activated carbon net can be replaced, when a detection sensor detects that treated flue gas in the treatment barrel does not reach the standard, it is indicated that activated carbon in the activated carbon net needs to be regenerated, a driving motor can be further controlled to rotate by 180 degrees, and the two activated carbon nets are replaced; the equipment can continuously and stably purify the flue gas, so that the using effect of the equipment is improved.

The invention discloses a preparation method of a cable with fireproof and flame-retardant functions. A sheath material of the cable is prepared from the following raw materials in parts by weight: 45 to 65 parts of polyphenylene sulfide, 10 to 14 parts of a phosphorus-nitrogen flame retardant, 12 to 18 parts of modified nano magnesium hydroxide, 1.5 to 4 parts of graphene, 3 to 6 parts of carbon nanotubes, 1.5 to 2.5 parts of a silane coupling agent, 0.8 to 1.5 parts of a lubricant, 0.5 to 0.8 part of an antioxidant and 1.2 to 1.8 parts of a cross-linking agent. According to the preparation method of the cable with the fireproof and flame-retardant functions, the flame-retardant efficiency of the cable is remarkably improved by compounding a phosphorus-nitrogen flame retardant, ammonium polyphosphate and melamine cyanurate in a mass ratio of (3.5: 1)-(4.5: 1), modifying with nano magnesium hydroxide and surface stearic acid, and combining with the synergistic effect of graphene oxide and carbon nanotubes, so that the flame-retardant efficiency of the cable is greatly improved, and the flame-retardant performance of the cable is improved. And the phosphorus-nitrogen flame retardant generates an expanded carbon layer during combustion to isolate oxygen and combustible gas, and the nano magnesium hydroxide absorbs heat through decomposition to reduce the combustion temperature and release crystal water to dilute the combustible gas at the same time.

The embodiment of the invention discloses a polyphenylene sulfide film manufacturing method which is applied to a film manufacturing device. The thin film manufacturing device comprises a preheating roller, a longitudinal stretching system and a transverse stretching system, and the longitudinal stretching system comprises a stretching roller and a pressing roller; the compression roller is positioned above the stretching roller; the preheating roller comprises a first preheating roller; the first preheating roller is mounted in front of the longitudinal stretching system; the manufacturing method of the polyphenylene sulfide membrane comprises the following steps: carrying out preheating treatment on a polyphenylene sulfide sheet through a first preheating roller to obtain a preheated sheet; the preheated sheet passes through a longitudinal stretching system, and a longitudinal stretching sheet is obtained; the longitudinal stretching sheet is subjected to shaping treatment, and a longitudinal shaping sheet is obtained; enabling the longitudinal shaping sheet to pass through a transverse stretching system to obtain a two-way stretching sheet; and carrying out shaping treatment on the biaxially oriented sheet to obtain the polyphenylene sulfide membrane. According to the embodiment, the tensile strength of the polyphenylene sulfide membrane can be improved.

The invention discloses a low dielectric constant material with high heat resistance and high performance and a preparation method thereof, and belongs to the field of high polymer materials. The preparation method comprises the following steps: uniformly mixing the polyphenylene sulfide, the low dielectric glass fibers, the glass beads, the metal salt, the antioxidant and the silane coupling agent to obtain a mixture; and putting the mixture into a double-screw basic machine, and carrying out extrusion molding to prepare the low-dielectric-constant material with high heat resistance and high performance. The low dielectric property of the material is realized by utilizing the glass beads and the low dielectric glass fibers, the material has excellent performance due to the existence of the glass fibers, the material is endowed with extremely high heat resistance due to the adoption of PPS as a main base material, and the metal salt can form metal complexing action with polyphenylene sulfide due to the existence of the metal salt, so that the heat resistance of the material is improved. The dielectric constant is further reduced due to existence of copper, and the method is low in cost, simple and convenient to process and suitable for large-scale production.

The present application discloses a harmonica-shaped tube and a manufacturing method, a liquid cooling plate, a battery, and an electric device. The material of the harmonica-shaped tube comprises a polyphenylene sulfide composition, and the polyphenylene sulfide composition comprises polyphenylene sulfide resin and a toughening agent; and the toughening agent comprises a copolymer of olefin and glycidyl ester. In the present application, the polyphenylene sulfide composition is provided as the material of the harmonica-shaped tube, facilitating reduction of the conditions of breakage of extrudate, unsmooth extrusion and the like in the process of extrusion molding. Therefore, the formed harmonica-shaped tube has good mechanical strength, deformation resistance, corrosion resistance, heat resistance, heat dissipation, creep resistance and other properties, reducing the risk of cracking during pressing in the using process, and improving the production capacity and the product quality.

The invention provides a preparation method of a polyphenylene sulfide-based thermoplastic composite prepreg and a corresponding prepreg, and the preparation method specifically comprises the following steps: (1) preparing a suspension dispersion system containing polyphenylene sulfide, polyamide acid and ammonia water, and (2) preparing the prepreg containing polyimide, and adding a dopamine derivative in the step (2) for dispersion. The polyamic acid and the dopamine jointly improve the dispersity of the polyphenylene sulfide, the mechanical property of the composite material is improved, and the polyphenylene sulfide thermoplastic composite material has a good application prospect and can be used as a polyphenylene sulfide thermoplastic composite material.

The invention relates to the technical field of high polymer materials, and discloses a synthesis method of low-chlorine polyphenylene sulfide nitrile, which comprises the following steps: carrying out pressurized prepolymerization reaction on a sodium sulfide solution and p-dichlorobenzene to obtain a first prepolymerization reaction product; carrying out copolymerization prepolymerization reaction on the first prepolymerization reaction product and 2, 6-dichlorobenzonitrile to obtain a second prepolymerization reaction product; carrying out heating polymerization reaction on the second prepolymerization reaction product and benzyl chloride to obtain a heating polymerization reaction product; and raising the temperature of the polymerization reaction product, and carrying out phase separation to obtain the low-chlorine polyphenylene sulfide nitrile. Under the condition of no auxiliary agent, the polymerization process of inert gas pressurization and phase separation is adopted, benzyl chloride is applied to adjust the end group, low-chlorine high-molecular-weight polyphenylene sulfide nitrile can be obtained in a short time, the production efficiency of synthesizing polyphenylene sulfide nitrile can be improved, the purification process of byproduct sodium chloride is shortened, auxiliary agent recovery is omitted, and the production cost is reduced. The engineering construction investment is reduced, and the production cost for manufacturing the polyphenylene sulfide nitrile is greatly reduced.

The invention relates to a flexible PPS film and a preparation method thereof, and belongs to the technical field of film preparation. The film is prepared from the following raw materials in parts by weight: 60 to 80 parts of polyphenylene sulfide, 25 to 40 parts of castor oil-based toughening agent and 5 to 12 parts of organic modified glass fiber. The castor oil-based toughening agent is prepared from a derivative of castor oil and a double-bond end-capping substance; the castor oil derivative is generated by carrying out esterification reaction on castor oil and an isomannitol derivative; the isomannitol derivative is generated by mixing isomannitol and 1, 6-adipic acid according to a molar ratio of 1: (2-3) and carrying out esterification reaction. The castor oil-based toughening agent and the organic modified glass fiber are introduced into the polyphenylene sulfide base material, toughness enhancement of a flexible chain segment of the castor oil and rigidity enhancement of the glass fiber are utilized, and the castor oil-based toughening agent and the glass fiber synergistically enhance and modify the toughness of the polyphenylene sulfide, so that a film formed by stretching is uniform in thickness and good in molding.