53 results about "High impact polystyrene" patented technology

The invention discloses a halogen-free flame-retardant polyphenyl ether composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The composite material is prepared from the following components in parts by weight: 40-70 parts of polyphenyl ether resin, 10-30 parts of high impact polystyrene resin, 4-8 parts of SEBS (Styrene-Ethylene-Butylene-Styrene) resin, 5-10 parts of organic and inorganic composite flame retardant, 3-8 parts of phosphate flame retardant, 1-5 parts of polyborosiloxane and auxiliaries. The core of the organic-inorganic composite flame retardant is that the organic-inorganic composite flame retardant is a core-shell structure particle which takes magnesium-aluminum hydrotalcite and nano silicon dioxide as a core and melamine cyanurate as a shell according to a specific proportion. Through the synergistic effect of all the components, especially the core-shell structure, the dispersity and interfacial compatibility are effectively improved, so that the material achieves excellent flame retardance while maintaining high impact strength and heat resistance, and the UL-94 V-0 grade can still be met even under the condition of a 0.8 mm thin wall. The material is particularly suitable for preparing thin-wall electronic and electrical appliance shells and new energy automobile parts with harsh performance requirements.

The invention discloses a kind of polyphenylene ether composite material and preparation method thereof, the polyphenylene ether composite material is prepared by weight by the following components:1000 parts of polyphenylene ether, 100 200 parts of high-impact polystyrene, 60 100 parts of polytetrafluoroethylene wax, 200 800 parts of soda lime borosilicate hollow glass microspheres, 2 10 parts of antioxidants.The present invention, by adding polytetrafluoroethylene wax in polyphenylene ether composite material, can not only enhance composition fluidity and plasticizing effect, improve its processing and mechanical property, the dielectric constant of composite material can also be further reduced.Compared with talcum powder, calcium carbonate, borosilicate hollow glass microspheres, soda lime borosilicate hollow glass microspheres are added in the present invention, the tensile strength, shock resistance of composite material can be further improved, the dielectric constant of composite material can also be significantly reduced.

The invention discloses a polyamide / polyphenyl ether alloy material and a manufacturing method thereof, and is used for solving the problems that an existing polyamide / polyphenyl ether alloy material cannot meet UL94 V-0-level flame retardance, high insulativity of CTI greater than or equal to 700V and low precipitation (lt) after long-term damp-heat aging at the same time under the ultra-thin thickness of 0.6 mm; 0.1%) and a high performance retention rate (gt; 90%). The polyamide / polyphenyl ether alloy material comprises the following components in parts by mass: 55-75 parts of polyamide 66 resin; 25 to 45 parts of polyphenyl ether resin pre-irradiated by gamma rays; 10 to 20 parts of a silicone-coated diethyl aluminum phosphinate flame retardant with a core-shell structure; 5-10 parts of a maleic anhydride grafted high impact polystyrene compatilizer pre-irradiated by gamma rays; 20-30 parts of hydrolysis-resistant glass fiber of which the surface is treated by a silane coupling agent; 3-8 parts of tetrapod-like zinc oxide whiskers; 2 to 5 parts of a CTI synergist; and 1-2 parts of an anti-precipitation agent.

Insulating panel for vehicles suitable for the transport of materials, in particular suitable for the transport of materials at controlled temperatures, comprising: a structural shell (81) made from one or more of the following materials: Polystyrene (PS), High Impact Polystyrene (HIPS), Acrylonitrile Butadiene Styrene (ABS), Polymethyl Methacrylate (PMMA), Polypropylene (PP), Polyvinyl Chloride (PVC); a thermally insulating filler (82), made from a material comprising polyurethane; a reinforcing insert (83), applied between said structural shell (81) and said filler (82).

Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23° C.

The invention relates to the field of high polymer materials for automobiles, and particularly discloses antibacterial HIPS (High Impact Polystyrene) plastic for automobile interiors and a preparation method of the antibacterial HIPS plastic. The antibacterial HIPS plastic for the automotive trim comprises the following raw materials in parts by weight: 80-90 parts of titanium dioxide modified HIPS, 5-10 parts of inorganic metal ion antibacterial fibers, 1-3 parts of an antioxidant, 2-5 parts of a flame retardant, 10-15 parts of an inorganic filler and 2-5 parts of a flexibilizer, raw materials of the titanium dioxide modified HIPS comprise titanium dioxide composite particles and HIPS particles in a mass ratio of (0.5-0.7): (3-5), the titanium dioxide composite particles are of a core-shell structure, a core material is silver-loaded titanium dioxide, and a shell material is aluminum oxide. The antibacterial HIPS plastic for the automotive trim has the advantage of lasting antibacterial property and is not easy to age and degrade, and the service life of the automotive trim is prolonged.

The application relates to the technical field of high-impact polystyrene, in particular to a low-density anti-aging HIPS material and a preparation method and application thereof. The low-density anti-aging HIPS material is prepared from the following raw materials in parts by mass: high-impact polystyrene 50-100 parts, regenerated polyvinyl chloride 10-30 parts, epoxy resin 1-5 parts, nano-zinc oxide 1-5 parts, hindered amine light stabilizer 1-5 parts, foaming agent 5-10 parts, filler 1-5 parts, antioxidant 1-2 parts, compatibilizer 1-2 parts and processing aid 1-2 parts; the foaming agent comprises AC foaming agent, activated silicon dioxide, nano-lanthanum oxide, dicumyl peroxide and polyether amine D230; the activated silicon dioxide is silicon dioxide grafted with a carboxyl-terminated polyamide amine. After being subjected to the action of sunlight, heat and oxygen for a long time, the HIPS material is not prone to phenomena such as yellowing, brittleness, cracking and loss of surface gloss, has excellent anti-aging performance, and has good product mechanical properties and high impact strength.

The present invention belongs to the field of polymer materials technology, specifically relating to a polystyrene material, its preparation method, and application. The polystyrene material comprises the following components, in parts by weight: 10-50 parts high-impact polystyrene resin, 25-40 parts polyphenylene ether resin, 10-20 parts phosphate flame retardant, 5-15 parts flame retardant synergist, 1-20 parts toughening agent, and 0.1-0.5 parts anti-drip agent. The high-impact polystyrene resin has a melt flow index of 3-10 g / 10 min at 200°C and 5 kg; and the polyphenylene ether resin has an intrinsic viscosity of 0.40 dL / g to 0.60 dL / g. The polystyrene material produced by the present invention effectively overcomes the poor toughness of existing halogen-free HIPS materials, achieving high flame retardancy and notched impact strength.

The invention relates to the field of high polymer materials, in particular to a foaming material, a preparation method and application thereof and an inner container of refrigeration equipment. The foaming material comprises the following raw material components: a POE (Polyolefin Elastomer) base material, high impact polystyrene, a modified foaming agent and a compatilizer, wherein the compatilizer is selected from at least one of SEBS (Styrene-Ethylene-Butylene-Styrene) grafted maleic anhydride, PP (Polypropylene) grafted maleic anhydride and POE grafted maleic anhydride; the mass ratio of the POE base material to the compatilizer to the modified foaming agent to the high impact polystyrene is 100: (1-5): (80-100): (800-1000). According to the foaming material, the toughness can be improved, the heat conductivity coefficient is reduced, meanwhile, the mechanical performance and the processing performance of the foaming material cannot be affected, and the problem of cracking is not prone to occurring in the processing process.

The utility model discloses a high impact polystyrene preparation system, including blender, primary prepolymerization kettle, secondary prepolymerization kettle, reactor and devolatilization ware, primary prepolymerization kettle is connected with blender through first pipeline, secondary prepolymerization kettle is connected with primary prepolymerization kettle through second pipeline, reactor is connected with secondary prepolymerization kettle through third pipeline, and devolatilization ware is connected with secondary prepolymerization kettle through third pipeline. And the devolatilization device is connected with the reactor through a fourth pipeline. According to the high impact polystyrene preparation system disclosed by the utility model, 30% of polymerization reaction conversion is completed through the matching of the first-stage prepolymerization kettle and the second-stage prepolymerization kettle, so that materials can be sheared to be uniform, fine and better subjected to polymerization reaction, the molecular mass distribution of an HIPS (High Impact Polystyrene) polymer is improved, the grafting strength is increased, and the quality of an HIPS product is further improved; due to the cooperation of the first-stage prepolymerization kettle and the second-stage prepolymerization kettle, the temperature during the primary polymerization reaction can be reduced, the reaction rate can be slowed down, and further the generation of reaction heat is reduced, so that the overtemperature and overpressure risk is avoided, and the safety production is ensured.

The invention relates to the field of functional styrene materials, and discloses a fireproof flame-retardant HIPS material and a preparation method thereof. The fireproof flame-retardant HIPS material is prepared from the following raw materials in parts by weight: 100-120 parts of HIPS resin, 12-18 parts of a toughening agent, 10-20 parts of a plasticizer, 7-12 parts of a composite flame retardant and 0.5-2 parts of an antioxidant, the composite flame retardant is composed of a coating agent, an inorganic nano flame retardant, nano silicate and a phosphate flame retardant; the coating agent is prepared from (1-hydroxyl allyl) trimethylsilane, vinyltris (methylethylketoxime) silane and ethylene glycol dimethacrylate. According to the fireproof flame-retardant HIPS material prepared by the invention, the inorganic nano flame retardant is used as a main flame-retardant component, so that the fireproof flame-retardant HIPS material has relatively good fireproof flame-retardant property and mechanical property under the condition that a relatively small amount of flame retardant is added, and is wide in application range.

The invention discloses a preparation method of high-rigidity and high-impact polystyrene resin, and relates to the technical field of polystyrene preparation.The preparation method comprises the steps that a solid premix is added into a main feeding hopper of a co-rotating twin-screw extruder, an elastic functional premix is added into a three-area side feeding hopper of the co-rotating twin-screw extruder, water cooling, air drying and pelletizing are conducted after melt extrusion, and the high-rigidity and high-impact polystyrene resin is obtained. The high-rigidity and high-impact polystyrene resin is obtained. According to the invention, the styrene-butadiene-styrene block copolymer and the hydrogenated styrene-butadiene-styrene block copolymer are compounded as a toughening modification material of polystyrene resin, and the styrene-butadiene-styrene block copolymer can effectively improve the impact response of the material at normal temperature; and the hydrogenated structure of the hydrogenated styrene-butadiene-styrene block copolymer can enhance the toughness maintaining capability of the material in a low-temperature environment, so that sudden impact strength drop caused by molecular chain embrittlement at low temperature is avoided, and the effect of synergistically improving the impact resistance of polystyrene at normal temperature and low temperature is achieved.

A plant for the production of insulating panels for vehicles suitable for the transport of materials, in particular suitable for the transport of materials at a controlled temperature, preferably food transport, said plant (1) comprising: a thermoforming station (100), comprising: a substantially horizontal wall (101), having an upper surface (101a) and a lower surface (101b), said wall (101) also having a through opening (102) and a sealing element (103) positioned on said upper surface (101a) around said opening (102), wherein said opening (102) and said sealing element (103) define an operating position (P2) for a sheet material (2), wherein said material (2) is a plastic material comprising one or more of: Polystyrene (PS), High Impact Polystyrene (HIPS), Acrylonitrile Butadiene Styrene (ABS), Polymethyl Methacrylate (PMMA), Polypropylene (PP), Polyvinyl chloride (PVC) and similar; a heating member (120), controllable between a distal position (PD) and a proximal position (PP) with respect to said operating position (P2); a motorized mould (130), configured to be brought to said operating position (P2) so as to thermoform said material (2) into a sheet; a first pressure system (140), configured to operate on said operating position (P2) so that at least part of said thermoforming occurs under controlled pressure conditions. Said thermoforming station (100) is configured to supply thermoformed sheets (3) at the output, to obtain an assembly of thermoformed panels (4). The plant also comprises: a foaming station (500), configured to perform a foaming of thermoformed panels (41-43) obtained from said thermoforming station (100), obtaining corresponding foamed thermoformed panels (41'-43'), and to perform a moulding of said foamed thermoformed panels (41'-43').

The present invention discloses a regenerated HIPS / PPO alloy material based on chemical and physical co-modification, which is mainly composed of the following components in parts by mass: waste HIPS 60-70, PPO 30-40, HIPS-based macromolecular chain extender 2-8, elastomer toughening agent 2-10, oxazoline chain extender 0.2-1, and chain-extension catalyst 0.1-0.4. The alloy material uses chemical modification of in-situ chain extension and compatibilization of the macromolecular chain extender to restore a molecular chain structure, improve a phase interface and increase compatibility of the alloy. Through physical modification introduced by adding the elastomer toughening agent, a combined effect of chemical modification and physical modification is exploited, with target properties improved, a regenerated plastic alloy material with an excellent comprehensive property prepared, and the waste fully utilized to achieve energy saving and emission reduction. A method for preparing the above-described alloy material is also disclosed.

The invention discloses a high impact polystyrene test method, electronic equipment and a program product, and relates to the technical field of high impact polystyrene, the method comprises the following steps: building a fully branched polybutadiene model by using butadiene as a monomer; initiating styrene monomer polymerization by taking the first active site in the polybutadiene model as a seed to obtain a cross-linked phase molecular chain of polybutadiene and polystyrene; mixing the cross-linked phase molecular chain with a plurality of pure polystyrene molecular chains to construct a high-impact polystyrene chemical model; a molecular chain space structure of the high-impact polystyrene chemical model is optimized based on a molecular dynamics simulation principle, and a high-impact polystyrene material model meeting preset physical characteristics of the high-impact polystyrene material is obtained; and simulating a mechanical property change rule of the high impact polystyrene material model in a preset extreme test environment to obtain a test result. By adopting the method, the problem that the test result is inaccurate due to the fact that the test environment is easily limited in an extreme test environment can be solved.

The invention relates to a combustion ball of a remote projection type ignition device in forest and an ignition system, and the combustion ball comprises a plastic ball shell made of high impact polystyrene; the potassium permanganate powder is packaged in the spherical shell; the liquid reagent is mixed with the potassium permanganate in a mechanical injection manner during use; wherein the liquid reagent is a mixture of ethylene glycol and water, and delayed ignition time of 20-60 seconds is generated after the potassium permanganate powder and the liquid reagent are mixed by regulating and controlling the mass of the potassium permanganate powder and the composition and the volume of the liquid reagent. The remote projection type ignition system comprises the combustion ball and a liquid bottle used for storing the liquid reagent. The injection device is used for injecting the liquid reagent into the combustion ball from the liquid bottle; and the launching device is used for projecting the combustion ball injected with the liquid reagent to a target area. The device has the effects of being high in safety, high in operation efficiency, stable and reliable.

The invention discloses a flame-retardant HIPS (High Impact Polystyrene) composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The flame-retardant HIPS composite material provided by the invention is prepared from the following components in parts by mass: 38 to 62 parts of GPPS resin, 12 to 28 parts of SEBS rubber, 5 to 15 parts of potassium titanate fiber, 12 to 19 parts of brominated flame retardant, 2.5 to 4 parts of antimony flame retardant and 1 to 7 parts of compatilizer. The average diameter of the potassium titanate fiber is 0.1 to 0.6 mu m; the compatilizer comprises SEBS (styrene-ethylene-butylene-styrene) grafted maleic anhydride. The flame-retardant HIPS composite material provided by the invention still has good rigidity and toughness when being prepared into a thin-wall product, and has excellent flame retardance, and the flame-retardant grade can reach 5VA grade.

The application discloses a kind of high impact polystyrene resin and preparation method and application, the resin is made of raw materials including as follows: styrene monomer 83~87wt%, composite rubber 7~11wt%, mineral oil 0.7~3.2wt%, zinc stearate 0.5~2.8wt%;Wherein, the composite rubber includes the first particle with particle size 0.1~1 μm and the second particle with particle size 1~6 μm, the mass ratio of the first particle and the second particle is 15~30:70~85.The preparation method provided by the application adopts multiple reactor and controls reaction parameter gradually, and focuses on adjusting the stirring speed in the process of pre-polymerization of composite rubber type, so that the prepared resin has higher gloss and better mechanical properties.

In the first step of the manufacturing process according to the invention, matrices in the form of hollow structures are printed as negatives using a 3D printer. Materials soluble in common solvents are used as the starting material. These soluble materials are printed with the intention of being dissolved in a later step of the manufacturing process. Preferably, the most common soluble filament materials, such as HIPS and PVA, are used. In the second step, these hollow structures (and thus their surfaces) can be coated from the inside and, if necessary, also (partially) from the outside using highly temperature-sensitive coating processes such as chemical vapor deposition (CVD) or chemical vapor infiltration (CVI) with the aid of suitable precursor compounds, so that structures are created as positives on the surfaces of the hollow structure (matrix). For this purpose, suitable precursors are provided, enabling for the first time the deposition on and in such matrix materials that could not previously be coated; certainly not in the form of negatives produced by 3D printing, since these matrix structures are, in some cases, very temperature-sensitive materials. In the third and final step, the negative is dissolved in a suitable solvent (e.g., water for PVA or limonene for HIPS) to separate it from the contiguous structure, thus removing the positive from the negative. The released positive structure forms the desired component. After purification to remove any remaining matrix material, the resulting micro- or nanocomponent is ready for use.

The present invention provides a preparation method for high impact polystyrene (HIPS) and a HIPS prepared thereby. In the present invention, a chain transfer agent and / or a low-molecular-weight vinyl aromatic polymer is added to a mixture solution of a vinyl aromatic monomer, a solvent, a rubber and an adjuvant, and prepolymerization is performed under stirring, followed by final polymerization and devolatilization to form HIPS. In the present invention, the morphological structure of a rubber phase can be maintained by appropriately reducing a viscosity of a prepolymerized continuous phase. Within a certain range of shearing rate, the morphological structure of the prepared HIPS can be maintained to improve the impact strength.

The invention discloses a high dielectric constant and low dielectric loss polyphenyl ether alloy composition suitable for a 5G phase shifter assembly and a preparation method thereof. The polyphenyl ether alloy composition is prepared from the following raw materials in parts by weight: 15-45 parts of polyphenyl ether resin, 5-15 parts of high impact polystyrene resin, 30-70 parts of a dielectric filler, 5-15 parts of a flexibilizer and 0.3-1.5 parts of a processing aid. The preparation method has the advantages that the interaction between the dielectric filler and the polyphenyl ether resin matrix is improved by carrying out grafting modification on the dielectric filler, the problems that the dielectric filler is difficult to disperse and easy to agglomerate are solved, high-content filling and uniform dispersion of the dielectric filler in the polyphenyl ether resin matrix are realized, and the dielectric constant is further improved; the dielectric loss degradation caused by weak interface interaction is avoided, excellent dimensional stability, adjustable dielectric constant and extremely low dielectric loss are shown, and the material is particularly suitable for dielectric plates and other components of 5G phase shifters.

The utility model relates to the technical field of refrigerator interior trim panels, and discloses an aluminum-coated HIPS refrigerator interior trim panel which comprises an interior trim panel, the interior trim panel comprises an HIPS layer and an aluminum-coated film layer, the aluminum-coated film layer is arranged on the inner side surface of the HIPS layer, a containing inner groove is formed in the bottom of the inner side of the interior trim panel, a cover plate is arranged on the upper portion of the containing inner groove, and the aluminum-coated film layer is arranged on the inner side surface of the inner side of the interior trim panel. A plurality of air holes are formed in the upper part of the cover plate at equal intervals; the HIPS layer is formed by melting injection molding, and the aluminum-coated film layer is cured by adopting a coating process. According to the utility model, the aluminum-coated film layer is arranged on the inner side of the HIPS layer, so that the heat conduction efficiency of the HIPS layer is improved, the manufacturing is convenient, the manufacturing cost is reduced, the inner groove and the cover plate are arranged at the bottom of the inner side of the interior trimming panel, articles for removing peculiar smell can be placed in the inner groove, and the cover plate is covered, so that the heat conduction efficiency of the HIPS layer is improved. Different smells generated by placed articles are eliminated through the air holes, the temperature conduction rate of the interior trim panel is increased, and meanwhile cold air loss can be prevented.

The application relates to the technical field of composite sheet processing, in particular to a PPPE-HIPS co-extrusion composite sheet and a preparation method thereof, which sequentially comprises a surface layer, an intermediate layer and a surface layer, and is characterized in that the surface layer is prepared from the following raw materials in parts by weight: polypropylene A, polypropylene B, polypropylene C, a foaming agent, linear low-density polyethylene, the melt index of the polypropylene A under the test conditions of 230 DEG C and 2.16 kg is 0.2-0.5 g / 10 min; the melt index of the polypropylene B under the test conditions of 230 DEG C and 2.16 kg is 0.5-0.8 g / 10 min; the melt index of the polypropylene C under the test conditions of 230 DEG C and 2.16 kg is 1-1.5 g / 10 min; the intermediate layer is prepared from the following in parts by weight: high-impact polystyrene A, high-impact polystyrene B, high-impact polystyrene C, high-impact polystyrene, a filler and rubber; the relative molecular weight of the high-impact polystyrene A is 80000-120000; the relative molecular weight of the high-impact polystyrene B is 150000-220000; the relative molecular weight of the high-impact polystyrene C is 250000-280000; and the relative molecular weight of the high-impact polystyrene D is 290000-300000.

The invention relates to the technical field of high impact polystyrene, in particular to a low-density anti-aging HIPS (High Impact Polystyrene) material as well as a preparation method and application thereof. The low-density anti-aging HIPS material is prepared from the following raw materials in parts by mass: 50 to 100 parts of high impact polystyrene, 10 to 30 parts of regenerated polyvinyl chloride, 1 to 5 parts of epoxy resin, 1 to 5 parts of nano zinc oxide, 1 to 5 parts of hindered amine light stabilizer, 5 to 10 parts of foaming agent, 1 to 5 parts of filler, 1 to 2 parts of antioxidant, 1 to 2 parts of compatilizer and 1 to 2 parts of processing aid. The foaming agent comprises an AC foaming agent, activated silicon dioxide, nano lanthanum oxide, dicumyl peroxide and polyether amine D230; the activated silicon dioxide is silicon dioxide grafted by carboxyl-terminated polyamidoamine. According to the invention, the phenomena of yellowing, embrittlement, cracking, surface gloss loss and the like are not easy to occur after long-term outdoor sunshine, heat and oxygen action, the aging resistance is excellent, and the product has good mechanical properties and high impact strength.

The invention relates to the field of advanced petrochemical and chemical new materials, in particular to a high-flowability, high-antibacterial and high-impact polystyrene composite material and a preparation method thereof, and the high-flowability, high-antibacterial and high-impact polystyrene composite material comprises the following components in parts by mass: 100 parts of high-impact polystyrene resin; 8-20 parts of a multifunctional composite filler; 5 to 15 parts of a toughening agent; 0.5 to 1.5 parts of a lubricant; and 0.2 to 0.4 part of an antioxidant. The multifunctional composite filler takes an inorganic antibacterial carrier as a core layer, and a polysiloxane shell layer is formed through surface grafting, so that the material is endowed with efficient antibacterial performance, the dispersity and interfacial compatibility of the filler in a polystyrene matrix are improved through the shell layer, the melt viscosity is reduced, and the processing fluidity is improved; high flowability, high impact resistance and high antibacterial property are realized.

The utility model provides an extrusion kind of high modified polystyrene foamed material's screening device, include: conveying frame, the surface of conveying frame is provided with conveying mechanism, the surface of conveying frame is movably connected with the conveying belt, cutting mechanism includes cutting part, and cutting part is used for cutting to the foamed board, the blocking mechanism includes the baffle, and the baffle is used for movable mounting on the surface of conveying frame, and transmission mechanism includes push block, and push block is connected on the surface of cutting part. The utility model provides an extrusion kind of high modified polystyrene foamed material's screening device is transported to foamed board through the conveying belt simultaneously, and the position of cutting mechanism can be adjusted simultaneously distance adjustment mechanism, when foamed board is connected on the surface of baffle, cutting part can move and cut the superfluous part of foamed board, and through transmission mechanism connection drive, make baffle move down, make the foamed board after cutting continue to move forward, need not external cutting equipment, improved work efficiency.

The utility model provides a refrigerator liner plate and a refrigerator liner, and belongs to the technical field of refrigerator liner plates. The refrigerator liner plate sequentially comprises a polyethylene terephthalate-1, 4-cyclohexanedimethanol ester layer, an HIPS (High Impact Polystyrene) layer, a styrene-butadiene-styrene block copolymer grafted maleic anhydride layer and a nylon plastic layer from inside to outside. The refrigerator liner plate provided by the utility model is good in chemical resistance and not easy to corrode and crack.

The utility model discloses an adjustable edge trimmer of HIPS panel, including base, support, cutting subassembly, loading subassembly and locating subassembly, the support is provided on the base, cutting subassembly is provided on the support, loading subassembly and locating subassembly are provided on the base, the base is symmetrically provided with two groups of baffle plate, the baffle plate is provided with two groups of baffle plate. The cutting assembly comprises a guide rod, a first sliding seat, a second sliding seat, two sets of belt wheels, a transmission belt and a cutting machine, two sets of mounting grooves are symmetrically formed in the support, and the two sets of belt wheels are rotationally arranged in the two sets of mounting grooves correspondingly; the transmission belt is arranged on the two sets of belt wheels in a sleeved mode, and the guide rod is arranged on the support. The utility model relates to the technical field of edge cutting machines, in particular to an adjustable edge cutting machine for an HIPS (High Impact Polystyrene) plate, which can flexibly adjust the position of a cutting knife and has better plate stability in the cutting process.

The invention relates to a low-surface-crystal-point conductive PS (polystyrene) composition and a preparation method and application thereof, the composition comprises high impact polystyrene toughening master batch, conductive carbon black, a surface treating agent, an antioxidant and a lubricant, and the high impact polystyrene toughening master batch comprises HIPS (high impact polystyrene) resin, a toughening agent (K glue, SEBS (styrene-ethylene-butylene-styrene) elastomer and LLDPE (linear low density polyethylene) resin), the antioxidant and the lubricant. Compared with a conventional PS conductive material preparation technology, the preparation method has the advantages that the carbon black is efficiently dispersed by adopting a two-step method, so that the conductive carbon black is more uniformly dispersed in the resin, and the number of crystal point particles on the surface of the material is within a control range; through preparation of the high-impact polystyrene toughening master batch, the compatibility of a toughening agent and PS is improved, and an elastomer is dispersed in a PS base material with a smaller particle size, so that the toughness of the material is further improved, and the problem that the number of crystal point particles of the material exceeds the standard due to uncontrollable phase state caused by simultaneous addition of conductive carbon black and the toughening agent is avoided.

The present invention provides a two piece, single use, medical examination device comprising: a high resolution endo-scope camera and a single use body, wherein the body comprises i) a handle portion for gripping ii) a blade portion for introducing into a patient, and iii) a portion for detachably coupling to a mobile display device; wherein the endoscope camera is fixed within the body, and wherein the body is made of a single material, wherein the material is one of polyethylene, polypropylene, nylon, polystyrene, high impact polystyrene (HIP), polyurethane, polycarbonate, acrylonitrile butadiene styrene, thermoplastic elastomer, acrylic, or polyester.