547 results about "Linear expansion coefficient" patented technology

The present invention discloses a hot-end sealing device for an air preheater that compensates for the expansion difference between a sealing sheet and a backing plate, which at least includes a sealing sheet and a backing plate. The sealing sheet is provided with sealing sheet mounting holes distributed along the length direction, and the backing plate is provided with backing plate mounting holes distributed along the length direction. The linear expansion coefficient of the sealing sheet is different from that of the backing plate. The sealing sheet and the backing plate are relatively fixed by clamping bolts that simultaneously pass through the sealing sheet mounting holes and the backing plate mounting holes. One end close to the rotor central cylinder is the expansion starting end, and the clamping bolts at the expansion starting end are fully tightened and fixed, while the remaining clamping bolts are not fully tightened and fixed, so that the sealing sheet and the backing plate freely expand towards the other end close to the rotor outer edge angle steel after being heated. At least one set of two-dimensional guiding mechanisms is arranged between the sealing sheet and the backing plate downstream of the expansion starting end. The above device maximally compensates for the triangular air leakage area at the hot end of the air preheater, significantly reduces the air leakage rate of the air preheater, has good stability and a long service life.

The invention relates to the technical field of fluid control, in particular to an air leakage valve and a fluid control device.The air leakage valve comprises a bearing plate and a valve element assembly, and the valve element assembly is provided with a flow guide plate, a middle plate, a valve plate and a bottom plate; one side of the supporting plate in the thickness direction is fixedly connected with one side, deviating from the middle plate, of the guide plate, and the valve plate is provided with a first deformation area and a second deformation area. According to the air leakage valve, the supporting plate and the guide plate, the middle plate, the valve plate and the bottom plate which form the modularized valve element assembly are all of a plate-shaped structure, so that the thinning degree of the air leakage valve is further improved; each layer of flat plate-shaped component can even be made of materials with the same or similar linear expansion coefficient, so that the problem of failure of the air leakage valve caused by poor temperature stability or temperature change is effectively solved; the flow path holes are arranged in a staggered and far-away manner, so that the sealing path is enlarged, the failure caused by poor sealing due to entry of foreign matters can be avoided, and the foreign matter interference resistance and the sealing reliability of the air leakage valve are greatly improved.

The present invention provides a laser glass with higher thermal conductivity and lower linear expansion coefficient. The laser glass, whose components are expressed in molar percentage, contains: P2O5: 50.0-59.0%; B2O3: 7.8-20.0%; Al2O3: 5.0-12.0%; Na2O: 0.5-9.0%; MgO: 0.5-6.0%; Yb2O3: 5.0-9.6%; Er2O3: 0.03-0.6%; Cr2O3: 0.04-0.5%. Through reasonable component design, the laser glass obtained by the present invention has a lower linear expansion coefficient and higher thermal conductivity, and at the same time has a longer radiation life, which is beneficial to the improvement of laser gain performance, can improve the thermal properties of laser glass, reduce or avoid damage and cracking of laser glass during operation, and optimize the equipment stability and laser quality of laser glass in high-power or continuous output scenarios.

The invention relates to the technical field of auxiliary power, in particular to an air supply device of an auxiliary power system. The device comprises an air inlet duct shell, an air inlet air pocket, an air inlet duct outer ring, an air inlet volute, a labyrinth ring, a locking unit and a rotor. The axial end face of the air inlet air pocket is coaxially connected with the air inlet channel shell in an abutting mode. The air inlet channel outer ring comprises an outer sealing cylinder and an outer extending ring which are coaxially and fixedly connected, and the axial end face of the outer extending ring is coaxially connected with the air inlet air pocket in an abutting mode. The air inlet volute comprises a volute positioning cylinder and a spiral air channel shell which are fixedly connected, and the end face of the air inlet volute coaxially abuts against the outer extending ring. The labyrinth ring is clamped between the air inlet channel outer ring and the air inlet volute, the inner peripheral wall and the outer peripheral wall are attached to the first sealing face and the second sealing face respectively, the radial linear expansion coefficient of the labyrinth ring is larger than that of the first sealing face and that of the second sealing face, the labyrinth ring comprises a ring body and a plurality of pressure reduction gear rings axially arranged at intervals, and a stepped pressure relief cavity is formed between every two adjacent pressure reduction gear rings. In this way, the problem that gas leakage is prone to occurring at the connecting position of the air inlet end shell of the auxiliary power system is solved.

The utility model relates to a PE (Poly Ethylene) water supply reinforced pipe which comprises an inner layer, a middle layer and an outer layer, the inner layer and the outer layer are made of high-density polyethylene resin, the middle layer is a hole net pipe steel framework, and the hole net pipe steel framework is adhered with the high-density polyethylene resin of the inner layer and the outer layer through hot melt adhesive. According to the PE water supply reinforced pipe, the steel-plastic composite technology is adopted, the PE plastic pipe is improved from the product structure, the problem that the wall thickness is not uniform is solved, and nearly half of raw materials are saved. The product has high compressive strength and creep resistance, good ring stiffness and impact resistance, low linear expansion coefficient and heat conductivity coefficient, good weldability, environmental stress cracking resistance and rapid cracking resistance, and is convenient to construct, simple in welding process and low in engineering comprehensive cost.

The invention relates to a sample preparation method for coating thickness detection, which comprises the following steps: circularly heating and cooling a base material to obtain a weakly combined base material with a base material body and a coating locally separated; and forming a cut extending along the thickness direction of the coating in a local separation area of the coating of the weak combination base material to obtain a coating section sample vertical to the surface of the base material. Due to the difference of linear cutting expansion coefficients of a base material body and a coating, alternating thermal stress is initiated at the interface of the base material body and the coating through cyclic heating and cooling processes, so that the base material and the coating are controllably and locally separated, a weakly combined base material is obtained, and a cut extending in the thickness direction is prepared in the surface of the locally separated coating. A coating section sample perpendicular to the surface of the base material can be obtained through simple mechanical separation. The method can be used for efficiently preparing a coating sample with clear section and good integrity at low cost on the premise of not depending on expensive or high-damage equipment.

The invention relates to the technical field of sealing rings, and discloses a wide-temperature-zone sealing ring which comprises a sealing ring body, the sealing ring body comprises a sealing layer, a thin film layer and a compensation layer, the outer portion of the thin film layer is arranged in the sealing layer, and the outer portion of the compensation layer is arranged in the thin film layer; the sealing layer and the thin film layer are supported by different materials and are made of fully-sealed elastic flexible materials, and the thickness of the thin film layer is smaller than that of the sealing layer; the compensation layer and the sealing layer are supported by different materials, and the linear expansion of the materials of the compensation layer and the sealing layer is opposite; the thickness of the compensation layer is inversely proportional to the thickness of the sealing layer according to the linear expansion coefficients of the two materials. The materials of the sealing layer and the compensation layer are selected, so that the compensation layer expands at low temperature to offset lost sealing pressure, the compensation layer shrinks at high temperature to buffer excessive extrusion, uniform contact stress of the sealing ring is maintained in extreme temperature fluctuation, and the effect of zero-damage self-adaptive sealing in the whole temperature range is achieved.

The invention discloses liquid tank assembly welding equipment and a welding thermal compensation method, and relates to the technical field of liquid tank assembly welding, and the specific method comprises the following steps: obtaining a real-time linear expansion coefficient introducing temperature nonlinearity, calculating to obtain total welding deformation superposed by thermal expansion and phase change shrinkage through a calibrated phase change fraction and a phase change volume expansion coefficient, and obtaining the welding residual strain of the previous layer through the residual strain coefficient, correcting the actually measured welding strain in the strain data, obtaining the corrected actually measured strain of the current layer, and driving and adjusting the welding path of the next layer according to the total welding deformation when entering the welding of the next layer. The corrected actual measurement strain of the current layer is directly written into a system register and covers the actual measurement welding strain, through dynamic calibration of a linear expansion coefficient, welding gun path compensation is directly guided, actual measurement data of the current layer are corrected, and a complete chain of parameter correction, deformation calculation, path compensation and residual stress closed-loop control is formed; and finally, the effect of reducing the multi-layer welding thermal deformation error is achieved.

The invention relates to the technical field of building construction intellectualization, in particular to a building construction intelligent monitoring system based on multi-source sensor data fusion. Comprising a data acquisition and storage unit; a data fusion processing unit; the construction state analysis unit uses an improved anomaly detection algorithm; a risk assessment early warning unit; and a visualization and decision-making unit. Through the dynamic adaptation module, the structural displacement feature weight is adjusted based on the construction stage parameters to preferentially extract the construction key stage structural features, and the structural material elastic deformation limit is corrected in combination with the material linear expansion coefficient and the temperature difference value; meanwhile, the dynamic critical generation module generates a risk critical judgment basis changing along with the construction process in combination with structural bearing capacity parameters and equipment mechanical stress limits in the construction stage, so that the problem that abnormal detection and risk judgment are lack of dynamic adaptability is solved; and the accuracy of personnel border crossing, equipment abnormity and structure abnormity identification and the adaptability of risk assessment are effectively improved.

The invention relates to the technical field of silencer machining, in particular to a production and machining control system and method for an air conditioner silencer, and the method comprises the steps: obtaining an equivalent gap of a joint region, and determining whether the joint gap of a welding region is in a standard interval or not; when the joint gap is in the standard interval, the critical stress of the joint area is estimated according to the joint gap of the welding area and the linear expansion coefficient of the assembly material, and the risk level of the copper pipe in the joint area during high-frequency brazing is determined; when the copper pipe in the joint area is at the first risk level, the welding mode of high-frequency brazing is determined according to the critical stress; after the welding mode of brazing is determined, the welding stage where a weld joint is located is determined according to the temperature rising speed, and a corresponding brazing strategy is adopted; the current fluctuation of the induction coil is detected in the high-frequency brazing process, and the initial current frequency is adjusted back according to the fluctuation duration. The dissimilar metal welding defect rate is reduced by adjusting the welding mode and the brazing strategy of high-frequency brazing.

The present invention relates to a concrete surface crack detection method and system based on a machine learning algorithm, which obtains concrete wave velocity, frequency, amplitude, strength, elastic modulus, temperature, and linear expansion coefficient, analyzes characteristic parameters, establishes a mathematical relationship model, fits data using a machine learning algorithm, determines model parameters, inputs relevant parameters of the concrete to be detected into a multi-parameter digital quantity plate model, and the model calculates the potential risk and predicted value of the crack. The multi-parameter digital quantity plate model is applied to real-time detection of concrete structures to realize quality assessment and crack prediction, and the concrete structure is regularly monitored to update model data. The system includes data acquisition, data preprocessing, feature extraction, crack measurement, multi-parameter digital quantity plate model establishment, multi-parameter comprehensive analysis, real-time monitoring and early warning, database management, and user interface and interaction modules.

The present invention provides glass fibers that make it possible to achieve excellent long-term production stability and that, when used in a glass fiber–reinforced resin molded article, can reduce the linear expansion coefficient in the MD direction and thereby reduce anisotropy. Glass fibers according to the present invention include a plurality of glass filaments. Relative to the total mass thereof, the glass fibers include 60.0–69.0 mass% of SiO2, 18.0–26.0 mass% of Al2O3, 8.0–14.0 mass% of MgO, and 0.0–4.9 mass% of CaO, the total SiO2, Al2O3, MgO, and CaO content being at least 95.0 mass%. The glass filaments have a flat cross-sectional shape, the ratio (major axis / minor axis) of the major axis to the minor axis is 1.2–5.5, and the SiO2 content S, the Al2O3 content A, the MgO content M, the CaO content C, and the ratio (major axis / minor axis) D of the major axis to the minor axis satisfy expression (1).　(1) 228.9≤(S / A)×(C+M)2 / D1 / 4≤588.9

An anti-resonant hollow-core optical fiber (10) according to one embodiment of the present invention is provided with: an outer cladding (11) having a tubular shape; a plurality of inner cladding elements (12) each having a tubular shape and in contact with the inner wall surface of the outer cladding (11); and a cladding layer (14) that covers the outer cladding layer (11), and the space surrounded by the plurality of inner cladding layers (12) of the anti-resonant hollow-core optical fiber (10) forms a core region (11d). The average linear expansion coefficient of the outermost layer of the coating layer (14) at 20 DEG C to 30 DEG C is 10 * 10 <-5 > [ / DEG C] or less, the average linear expansion coefficient of the outermost layer of the coating layer (14) at-60 DEG C to-50 DEG C is 6 * 10 <-5 > [ / DEG C] or less, and the in-site elastic modulus of the outermost layer of the coating layer (14) is 1500 MPa or more.

The invention belongs to the technical field of capacitor materials, and particularly relates to a capacitor packaging material, a preparation method and application thereof and a capacitor packaging method. The capacitor packaging material comprises a resin component A, a curing component B and a bonding component C, the resin component A contains bisphenol A epoxy resin I, polyether polyol I and optional rubber toughening agent I and modified silicon dioxide I; the curing component B contains anhydride and optional rubber toughening agent II and modified silicon dioxide II; the bonding component C contains epoxy modified acrylic resin and bisphenol A epoxy resin II. The key point of the capacitor packaging material is that the specific coupling agent modified silicon dioxide, the rubber flexibilizer, the modified anhydride and the epoxy modified acrylic resin are introduced into the capacitor packaging material, and all the components cooperate with one another to play a synergistic role, so that the capacitor packaging material has a relatively low linear expansion coefficient and relatively high toughness; the cured packaging material is free of cracking, and the contact surface between the packaging material and the ceramic is well combined without gaps.

An alpha-sialon phosphor which is represented by general formula (Cax, Euy) (Si12-(m + n) Alm + n) (OnN16-n), and which has an average linear expansion coefficient (alpha ') at 25-900 DEG C of 4.2-4.6 ppm / DEG C (inclusive). In the general formula, 0 < x < 2.0, 0 < y < = 0.5, 0.3 < = x + y < = 2.0, 0 < m < = 4.0, and 0 < n < = 3.0.

To provide a solid composition which achieves both a low dielectric constant and a low coefficient of linear expansion.SOLUTION: A solid composition contains a fluorine resin, and a fibrous anisotropic filler, where a reduction rate of a coefficient of linear expansion at 20°C to 200°C of the solid composition to a coefficient of linear expansion at 20°C to 200°C of the fluorine resin is 50% or more.SELECTED DRAWING: None

A semiconductor device includes a first die pad, a first semiconductor element, a sealing resin, and a reinforcement member. The first semiconductor element is bonded to the first die pad. The sealing resin covers the first semiconductor element. The reinforcement member is bonded to the first die pad. The linear expansion coefficient of the reinforcement member is smaller than the linear expansion coefficient of the sealing resin. In one example, the reinforcement member is covered with the sealing resin. The reinforcement member is located on the same side as the first semiconductor element in a first direction with respect to the first die pad.

The invention provides a polycarbonate resin composition that is excellent in flowability and heat resistance and has a low linear expansion coefficient. The invention is a polycarbonate resin composition including, per 100 parts by weight of a component including 20 to 90 parts by weight of (A) a polycarbonate-based resin (component A) and 80 to 10 parts by weight of (B) an ABS resin (component B), 5 to 45 parts by weight of (C) a silicate mineral (component C). The polycarbonate resin composition is characterized in that the component B has an SO42- content of 1 ppm or more and a PO43- content of less than 1.5 ppm.

The invention discloses a thermoplastic polyimide composite material for piston ring, a preparation method and a piston ring, which are composed of the following materials by mass percentage: thermoplastic polyimide 60-70; polyetheretherketone 10-20; modified carbon fiber 10-15; graphene oxide 5-10; chain extender 1-3; lubricant 1-2; antioxidant 0.5-1. The disadvantages of high wear rate, high linear expansion coefficient and inability to withstand high temperature of traditional piston rings are solved; the modification of carbon fiber reduces the probability of fiber shedding during the wear process, and reduces furrow wear and adhesive wear. The addition of graphene oxide further reduces the friction coefficient of the composite material, and a stable lubrication transfer film can be generated under long-term high load, solving many difficulties in the melt blending processing of thermoplastic polyimide high-temperature materials.

The invention relates to a method and device for preventing longitudinal cracks of a slab continuous casting head slab, and belongs to the technical field of continuous casting methods and devices. According to the technical scheme, the method comprises the following steps: calculating a function relational expression between a solidification shrinkage coefficient of molten steel and a casting blank temperature and between a linear expansion coefficient of a blank shell and the casting blank temperature; predicting the temperature of a billet shell and molten steel of the continuous casting billet discharged from the crystallizer; calculating the casting blank width of the continuous casting blank at the lower opening of the crystallizer and the actual casting blank width at high temperature; the ratio of the blank shell width to the lower opening width of the crystallizer is calculated and set according to actual conditions, and when the ratio is smaller than a threshold value, an operation interface gives an alarm for adjustment. The method has the beneficial effects that the longitudinal cracks of the head blank of the continuous casting blank are prevented on line, the flame cleaning work of the casting blank due to the longitudinal cracks is avoided, the time for offline casting blank cooling and manual cold detection is shortened, the temperature loss and turnover time of the casting blank are reduced, and the labor intensity of workers and the production cost loss are reduced.

The invention relates to a low-stress phenolic curing epoxy composition, an intermediate and a preparation method of the low-stress phenolic curing epoxy composition, by introducing a polyfunctional POSS (Polyhedral Oligomeric Silsesquioxane) structure with epoxy cyclohexyl or a polyfunctional POSS structure with epoxy cyclohexyl and phenyl, the finally obtained composition has the characteristics of low curing shrinkage, high strength, low modulus, high heat resistance and the like after being cured by utilizing the structural characteristics of the polyfunctional POSS structure; and the glass transition temperature, the bonding strength and the linear expansion coefficient are kept unchanged.

The invention belongs to the technical field of metallurgy, and particularly relates to steel for grinding balls with low cost and good wear resistance and a production method of the steel, and the steel comprises the following chemical components in percentage by weight: 0.72%-0.80% of C, 0.70%-0.80% of Mn, 0.70%-0.95% of Si, 0.70%-0.90% of Cr, less than or equal to 0.025% of S, less than or equal to 0.030% of P, 0.025%-0.040% of Alt and the balance of Fe and inevitable impurities. According to the method, the influence of carbon and all alloy elements on hardenability, hardenability, thermal conductivity, heat resistance and linear expansion coefficient is comprehensively considered, and through low-cost alloy design and process design, the flaw detection qualification rate of base metal round steel is increased, meanwhile, the surface hardness and the average volume hardness of the grinding balls are increased, hollow grinding balls are reduced, the wear resistance of the grinding balls is improved, and the cost is reduced.

The invention relates to a silicon-molybdenum-vanadium nodular cast iron material and a preparation method and application thereof. The silicon-molybdenum-vanadium nodular cast iron material comprises the following components in percentage by mass: 2.9-3.4% of C; 3.9% to 4.3% of Si; mn: 0.1%-0.3%; less than or equal to 0.05% of P; s: less than or equal to 0.02%; 0.03% to 0.055% of Mg; 0.9% to 1.15% of Mo; 0.25% to 0.45% of V; cr: 0.1% to 0.25%; 0.008%-0.02% of RE (rare earth); and the balance of Fe and inevitable impurities. The tensile strength of the material at the temperature of 800 DEG C is 60-65 MPa, the ductility of the material at the temperature of 800 DEG C is 30%-45%, the linear expansion coefficient of the material at the temperature of 800 DEG C is 16-19 micrometers / (m.K), the material is low in cost, and the risk that the exhaust manifold of the heavy-duty engine loses efficacy and cracks under extreme conditions can be reduced.

Semiconductor device comprising: an insulating substrate (1); a semiconductor element (3) arranged on a first surface of the insulating substrate (1); a housing (51) connected to the insulation substrate (1) and configured to accommodate the semiconductor element (3) therein; and a resin (6) filled into the housing (51) to bury the semiconductor element (3), wherein, assuming that the thickness of the insulating substrate (1) is denoted by t1, the thickness of the resin (6) is denoted by t2, the linear expansion coefficient of the insulating substrate (1) is denoted by α1 and the linear expansion coefficient of the resin (6) is denoted by α2, the relationship therebetween t2 ≥ t1 and α2 ≥ α1 is satisfied, the housing (51) is provided with an overlapping portion which overlaps with an outer edge of the insulating substrate (1) in plan view, and an extension portion (53) which extends from the overlapping portion further outward than the outer edge of the insulating substrate (1), the semiconductor device further comprises a fixing member (52) configured to fix the extension portion (53) of the housing (51) to an external member (54) arranged outside the semiconductor device, a heat radiation grease (7) is arranged between the insulation substrate (1) and the external element (54) and the overlapping portion is provided with a stepped portion (511) to accommodate the outer edge of the insulation substrate (1), and the depth of the stepped portion (511) is greater than the sum of the thickness (t1) of the insulating substrate (1) and a thickness of the heat radiation grease (7) in a state in which the extension portion (53) of the housing (51) is fixed to the external member (54) by the fixing member (52), and the depth of the stepped portion (511) is smaller than the sum of the thickness (t1) of the insulating substrate (1) and a degree of distortion of the insulating substrate (1) in a state in which the outer edge of the insulating substrate (1) has not yet been pressed by the stepped portion (511) of the housing (51), and wherein, in the state where the extension portion (53) of the housing (51) is fixed to the external member (54) by the fixing member (52), a second surface of the insulation substrate (1) opposite to the first surface thereof is distorted into a convex shape.

The invention relates to the technical field of high polymer material ingredients, and discloses a low-linear expansion coefficient PCR-PP bumper material and a preparation method thereof.The low-linear expansion coefficient PCR-PP bumper material comprises a low-expansion inorganic core, an interface gradient coupling agent and a surface activity modifier, the interface gradient coupling agent forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core, and the surface activity modifier forms a brush-like topology grafting layer with the grafting rate of 2.5%-4.5% on the surface of the low-expansion inorganic core; the surface activity regulator performs steric hindrance locking on the brush-like topological grafting layer through long-chain alkyl of the surface activity regulator. According to the preparation method, a gradient distribution interface layer with specific grafting density and chain segment length is constructed on the periphery of an inorganic core, so that an interface chain segment actively absorbs thermal expansion displacement of a matrix by utilizing conformation transformation; the thermal stress vector discontinuity between the filler and the matrix is eliminated, and an interface mechanical response mode is reconstructed to inhibit interface delamination and microcrack initiation while the overall linear expansion coefficient is inhibited.

To provide a strain gauge capable of reducing a difference in a resistance temperature coefficient as the entire strain gauge.SOLUTION: A strain gauge comprises: a first resistor; a first base material having a first surface in which the first resistor is formed and a second surface that opposes the first surface in a thickness direction; and a second base material having a third surface adhered to the second surface directly or indirectly and a fourth surface that opposes the third surface in a thickness direction. The first base material and the second base material are different each in terms of a first coefficient of linear expansion relative to a first direction orthogonal to a thickness direction and a second coefficient of linear expansion relative to a second direction orthogonal to a thickness direction and orthogonal to the first direction, and the first base material and the second base material are adhered overlappingly such that the first coefficient of linear expansion is larger than the second coefficient of linear expansion in the first base material and the second coefficient of linear expansion is larger than the first coefficient of linear expansion in the second base material.SELECTED DRAWING: Figure 2

The centrifugal fan of the present invention suppresses the displacement of the center of gravity position associated with thermal deformation. The centrifugal fan (1) includes a first portion (40) provided on a rotor (5) and a second portion (50) provided on a fan portion (3), wherein the second portion (50) has a larger linear expansion coefficient than the first portion (40). The first portion (40) includes a first top portion (42) and a first cylindrical portion (43). The second portion (50) includes a second top portion (52) and a second cylindrical portion (53). The second cylindrical portion (53) includes an inner cylindrical surface (53f) that is opposed to the outer cylindrical surface (43f) of the first cylindrical portion (43) with a first gap (S1) therebetween. The first top portion (42) includes a first plane (42f), and the second top portion (52) includes a second plane (52f) that is opposed to the first plane (42f). A convex portion (60) is provided on the first top portion (42) or the second top portion (52). The first plane (42f) and the second plane (52f) are bonded and fixed by an adhesive (G) provided in a second gap (S2) formed by the convex portion (60).

The application belongs to the technical field of polymer composites, and discloses a low linear expansion coefficient polyphenylene sulfide composite material, a preparation method and application thereof. The composite material comprises 20-60 parts of polyphenylene sulfide resin, 40-80 parts of a low expansion filler system, 0.5-5 parts of a coupling agent, 0.1-1 part of a lubricant and 0.1-1 part of a toning agent. The low expansion filler system is at least two of a lamellar structure filler, a fibrous structure filler and a nano-sized filler. The polyphenylene sulfide composite material obtained has a low linear expansion coefficient while maintaining good mechanical properties through the limiting effect of the lamellar structure filler on the thermal expansion of the resin matrix, the reinforcing effect of the fibrous structure filler on the strength and modulus of the material and the improvement effect of the nano-sized filler on the filling structure and the interface state. The polyphenylene sulfide composite material can be applied to the fields of precision instruments, electronic packaging, electronics and electrical appliances, automobiles and aerospace, etc. which have high requirements for thermal dimensional stability.