21 results about "Vicat softening point" patented technology

The invention relates to a resin composition, a prepreg, a circuit substrate and a printed circuit board. The resin composition at least comprises: (1) functionalized modified polyphenyl ether resin; (2) hydrocarbon resin, wherein the Vicat softening point of the hydrocarbon resin is 80 DEG C to 240 DEG C; the structural formula of the silicon-nitrogen resin is shown in the formula (1), n is a natural number ranging from 10 to 200, R1, R2, R3, R4 and R5 are independently selected from-H,-OH, amino, C1-C6 alkyl, C1-C6 alkenyl, C6-C12 aryl, C1-C6 alkyl substituted C6-C12 aryl, acrylate or C1-C6 alkyl substituted acrylate, and a molecular chain of the silicon-nitrogen resin at least comprises Si-H groups and Si-vinyl groups. The circuit substrate prepared from the resin composition has high peel strength, high modulus strength, excellent electrical properties and high heat resistance, and has a wide application prospect.

The invention provides a preparation method of a shrinkage-resistant supercritical TPU foaming material, and relates to the technical field of foaming materials, and the preparation method comprises the following steps: selecting an unactivated inorganic filler, and activating the inorganic filler by using a coupling agent containing amino or hydroxyl; uniformly dispersing the activated powder into a TPU base material through a pre-dispersion-dispersion process, and extruding into a plate through an extruder; placing the extruded TPU plate in a two-way stretching instrument, setting the temperature to be higher than the Vicat softening point and lower than the melting point of the TPU, and enabling the material to deform in the transverse direction and the longitudinal direction through two-way stretching; by introducing the filler with groups such as amino or hydroxyl, the filler and TPU can generate hydrogen-bond interaction, so that the dimensional stability of the material is improved; by adding the inorganic filler, the effect of heterogeneous nucleation points is achieved in the supercritical foaming process, and by means of two-way stretching and molecular chain orientation, the strength of the material in the length-width direction is improved, and the post-curing speed is increased.

This application discloses an ASA glass fiber composite material, its preparation method, and its application, relating to the field of plastic parts technology. The ASA glass fiber composite material of this application comprises the following components by weight: 89.6-94.6 parts ASA resin, 5-10 parts glass fiber, 0.8-2 parts lubricant, and 0.04-0.08 parts plasticizer; the lubricant includes organic lubricants. By adding glass fiber, lubricant, and plasticizer to ASA resin and adjusting the weight ratio of ASA resin, glass fiber, lubricant, and plasticizer in the ASA glass fiber composite material, the melt flow index, impact strength, and Vicat softening point of the prepared ASA glass fiber composite material are all improved, meeting the qualification requirements.

The invention discloses a preparation method of a composite material for an electrode insulation support frame. The preparation method comprises the following steps: (1) preparing matrix particles; (2) preparing primary modified particles; (3) carrying out surface alkylation modification to prepare filler particles; and (4) carrying out melt blending and extrusion granulation on the filler particles, polypropylene powder and an antioxidant to obtain granules, carrying out hot press molding on the granules, and cooling to normal temperature to obtain the composite material for the electrode insulation support frame. The composite material prepared by the method has higher tensile strength and vicat softening point, which shows that the composite material prepared by the method has good mechanical property and heat resistance, and can obviously improve the durability of the support frame and reduce the maintenance and replacement cost when being applied to the electrode insulation support frame.

The invention discloses a packaging film of an aluminum-plastic film for hot box testing, the packaging film sequentially comprises a bonding layer, a core layer and a heat sealing layer, the bonding layer is prepared by mixing maleic anhydride modified polypropylene, co-polypropylene and a vinyl or allyl elastomer, the melting point of the maleic anhydride modified polypropylene is 140-160 DEG C, the melt index is 3-8 g / min, and the vicat softening point is 110-150 DEG C; the core layer is prepared by mixing co-polypropylene and a vinyl or propenyl elastomer; the heat sealing layer is prepared by mixing co-polypropylene, an ethylene or propylene-based elastomer, low-melting-point acid modified polyolefin and a slipping agent, and the melting point of the low-melting-point acid modified polyolefin is 70-95 DEG C. The low-melting-point acid modified polyolefin with the melting point of 70-95 DEG C is added into the heat sealing layer, so that the packaging tension of the packaging film at the temperature of 130 DEG C is reduced, and the packaging film meets the hot box test requirement of the lithium ion battery monomer at the temperature of 130 DEG C.

The invention discloses a high-heat-resistance bottle-grade polyester chip and a preparation method thereof, and belongs to the technical field of polyester materials. The invention aims to solve the problems of reduced processing adaptability, degraded transparency and insufficient dimensional stability caused by improvement of heat resistance in the prior art. The polyester chip is prepared by taking purified terephthalic acid and ethylene glycol as main monomers, introducing modified phosphate and citric acid, and carrying out multi-stage esterification-polycondensation and solid-phase tackifying, wherein the modified phosphate is chemically bonded with cyclodextrin through triphenyl phosphate and KH-550 to form a structure with thermal stability, interfacial compatibility and migration inhibition functions. According to the scheme, high transparency, good melt flowability and bottle blowing efficiency are kept, the vicat softening point and crystallization controllability are remarkably improved, and collaborative optimization of high heat resistance and comprehensive processing performance is achieved.

A back surface polishing tape (100) capable of protecting a circuit formation surface of an electronic component in a process of grinding the electronic component, the back surface polishing tape (100) comprising a resin layer (A) (10), a resin constituting the resin layer (A) (10) having a Vicat softening point of 45°C or higher, and a buried amount of 10 μm or more as measured by a predetermined method.

The invention provides a high-toughness low-melting-point flame-retardant copolyamide composite material and a preparation method thereof.The preparation method comprises the steps that a copolymerization modification method is adopted, PA612, PA610 and PA510 serve as copolymerization components and are added into nylon 66 salt, PA612 / 66, PA610 / 66 and PA510 / 66 copolymers are synthesized through a melt polycondensation method, the sequence state structure of copolymerization products is disturbed through multi-component copolymerization, and therefore the copolyamide composite material with the high toughness, the low melting point and the flame retardance is obtained. And finally, the melting point of the polymer is reduced, so that the polymer is easy to form and process, and flame-retardant modification is facilitated. In one embodiment of the invention, the elongation at break of the PA510 / 66 reaches up to 37.2% and is far higher than 12.0% of the PA66, and the elongation at break of the PA510 / 66 is improved by 314.0% compared with the PA66. Compared with pure PA66, the IZOD notch impact strength of the PA510 / 66 is improved by 21.3%, and it is proved that the PA510 / 66 has the good toughness characteristic. In addition, the lowest vicat softening point of the PA510 / 66 is 235.4 DEG C, and the lowest melting point of the PA510 / 66 is 244.48 DEG C. And the PA510 / 66 is indicated to have excellent molding processing performance.

The application discloses a kind of air blowing optical cable suitable for high temperature installation operation environment, including: sheath and cable core received in sheath;The sheath adopts sheath material, and the vicat softening point of high molecular thermoplastic material is between 60 DEG C~90 DEG C.This application solves the problem of sharp shortening of air blowing distance caused by temperature change of outside working environment of air blowing microcable by optimizing thermodynamic performance of sheath material, without special consideration of the influence of construction working environment temperature, widens construction window period, makes the popularization and application of air blowing laying technique more easily accepted;Solve the limitation of air blowing microcable application area, whether in summer or winter can be constructed, whether in the cold region of northern hemisphere is used, or in the tropic region of southern hemisphere is used, as long as in the same specification pipeline air blowing, same air blowing microcable product can be used, without multiple product development.

This invention discloses an optically transparent, high-toughness PMMA composite and its preparation method, wherein PMMA-... is prepared in a mass ratio of 1:(60~100):(0.2~0.5):(0.1~0.4). b PCholMA block copolymer, PMMA powder, antioxidant, and nucleating agent are dispersed in a polar solvent, heated, and then cooled to obtain the final product. This invention prepares a PMMA composite containing columnar micelles of block copolymer via a one-step method. By adjusting the solvent polarity, columnar micelles of different lengths can be obtained. The toughness of PMMA composites containing micelles of different lengths is significantly improved. Furthermore, the toughened PMMA retains high transparency. In addition, while significantly improving the mechanical properties of PMMA such as toughness and impact strength, it does not significantly affect the thermal stability, refractive index, Vicat softening point, and glass transition temperature of PMMA, thus broadening the application range of PMMA.

The embodiment of the utility model provides a thermal deformation vicat softening point testing device, which comprises a heating box used for accommodating a heat transfer medium capable of heating plastic to be tested; the testing assembly is used for abutting against the to-be-tested plastic and testing the Vicat softening point of the to-be-tested plastic; the liquid cooling mechanism is at least partially arranged in the heating box and can be in contact with the heat transfer medium; the air cooling mechanism comprises an air guide shell and a fan, the air guide shell is arranged on the periphery of the heating box, an air path is formed between the air guide shell and the outer wall of the heating box, and the fan communicates with the air path and is used for providing airflow for the air path. An air guide shell of the air cooling mechanism is arranged on the periphery of the heating box, an air path is formed between the air guide shell and the outer wall of the heating box, a draught fan of the air cooling mechanism provides airflow for the air path, the airflow can flow along the air path and exchange heat with the heating box, the liquid cooling mechanism arranged in the heating box is matched to cool a heat transfer medium at the same time, and the cooling efficiency is high; and the test efficiency is improved.

This invention discloses a creep-resistant ultra-high molecular weight polyethylene (UHMWPE) composite material and its preparation method. The composite material is obtained by hot pressing of UHMWPE powder, a crosslinking agent, and modified calcium sulfate whiskers. The crosslinking agent is 1,3,5-triacryloylhexahydro-triazine. Before hot pressing, the crosslinking agent is uniformly coated on the surface of the UHMWPE particles. During hot pressing, a crosslinking reaction is initiated in the particle boundary region, forming an interfacial crosslinking network. The modified calcium sulfate whiskers are obtained by surface modification of calcium sulfate whiskers with a silane coupling agent. The interfacial crosslinking network and the whisker bridging structure together constitute a multi-scale synergistic reinforcement network. This invention is the first to introduce calcium sulfate whiskers into the TAF interfacial crosslinked UHMWPE system, achieving an organic integration of chemical crosslinking and physical reinforcement. Tests show that at 70°C... o C. Under a stress of 1 MPa for 30 minutes, the creep elongation of the composite material of the present invention is as low as 0.47%, which is 55.2% lower than that of unmodified UHMWPE. The Vicat softening point reaches 140.2℃ and the tensile strength reaches 36.5 MPa.

The present invention provides a sealing sheet that offers a desirable level of molding properties for use as a sealing sheet for system boards on which processors are mounted, and that can enhance adhesion to other laminated components such as substrates and processors. [Solution] A sealing sheet for a system board on which a processor is mounted, wherein the base resin is a polyolefin resin and the Vicat softening point is 30°C or higher and 100°C or lower.

1. Name of the product in this design: Vicat Heat Deformation Tester. 2. Application of this design: Determination of the Vicat softening point temperature of thermoplastic plastics. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a PVC composition and a preparation method thereof, and belongs to the technical field of high polymer materials. The product uses organic maleimide derivatives and thiol methyl tin to be compounded with inorganic titanium white powder as a thermal stability component. The product can significantly improve the thermal stability, can still maintain low discoloration under a processing environment of up to 190 DEG C, and can maintain a high level of the Vicat softening point. The torque rheology reaches a standard, and the comprehensive processing performance is excellent.

The invention discloses a low-shrinkage high-temperature-resistant elastic cable empty tube material which comprises the following components in parts by mass: 50-70 parts of a thermoplastic elastomer (TPE), 8-25 parts of a polyolefin elastomer (POE), 6-30 parts of metallocene low-density linear polyethylene (MLLDPE), 150-180 parts of a flame retardant, 20-30 parts of a flame-retardant synergist, 0.5-1 part of polyethylene wax, 1.2-2 parts of an antioxidant and the thermoplastic elastomer (TPE) with a vicat softening point of 130 DEG C or above. Compared with the prior art, the low-shrinkage high-temperature-resistant elastic optical cable hollow casing pipe material has the following advantages that the low-shrinkage high-temperature-resistant elastic optical cable hollow casing pipe material for the low-shrinkage high-temperature-resistant elastic optical cable has flexibility and meets the requirements of high flame retardance, high and low temperature resistance, high temperature resistance, tear resistance, impact resistance and aging resistance at the same time; the properties of softness, high and low temperature resistance, high temperature resistance and the like of the cable material are ensured; and the metallocene low-density linear polyethylene (MLLDPE) is added, so that the properties of easy sealing (optical cable connection), tear resistance, obdurability and the like of the material are improved.

A back-side polishing belt (100) is provided that can protect the circuit forming surface of the electronic component during the polishing process of the electronic component. The back-side polishing belt (100) has a resin layer (A)(10) and a resin layer (B)(20). The resin constituting the resin layer (A)(10) has a Vicat softening point of 45°C or higher and an embedment depth of 10 μm or higher as determined by a predetermined method.

The invention relates to the field of composite tableware materials, and discloses a PET composite tableware material and a preparation method thereof.The PET composite tableware material is prepared from, by weight, 50-80 parts of polyethylene glycol terephthalate; 20 to 50 parts of polylactic acid; 0.5-5 parts of a multivalent metal salt ion source; 1-10 parts of a bio-based plasticizing and dispersing synergist; and 0.1-2 parts of a polyfunctional group anhydride regulating agent. The preparation method of the PET composite tableware material comprises the following steps: S1, material pretreatment; and S2, staged temperature control reaction extrusion. By introducing a multivalent metal salt ion source, a thermally reversible ionic bond cross-linked network is constructed in PET and PLA matrixes, the network plays a role of physical cross-linking points at room temperature and use temperature, the thermal deformation temperature and the vicat softening point of the composite material are remarkably improved, the material can be subjected to rapid injection molding by adopting a cold mold, and the service life of the material is prolonged. The forming period is greatly shortened, the production energy consumption is reduced, and high heat resistance and high processing efficiency are both considered.

The invention belongs to the technical field of filling wax, and provides styrene microspheres and preparation thereof, and a filling type wax material and preparation thereof. According to the preparation method disclosed by the invention, styrene is taken as a first monomer, one or more of octocapric acid propylene glycol ester, neocapric acid vinyl ester and propylene glycol dicaprylate are taken as a second monomer, and the styrene microspheres are prepared through an emulsion polymerization method. By using the second monomer, the alkyl side chain of the styrene microsphere is increased, so that the dispersity of the styrene microsphere in molten casting wax is improved. When the prepared styrene microspheres are used as a filler and are filled into casting wax, the rigidity of the casting wax can be enhanced, the bending strength, the vicat softening point and the surface flatness of the casting wax can be improved, and the volume shrinkage rate of the casting wax after curing can also be reduced. The invention further provides a preparation method of the filling type wax material according to the technical scheme, the preparation method provided by the invention is simple and convenient to operate, and the comprehensive performance of casting wax can be greatly improved.

The invention belongs to the technical field of PVC alloy materials, and provides a PVC / MS / PMMA alloy material with high gloss, high heat resistance and poor scraping resistance as well as a preparation method and application of the PVC / MS / PMMA alloy material with high gloss, high heat resistance and poor scraping resistance, and the PVC / MS / PMMA alloy material mainly comprises polyvinyl chloride, MS, PMMA, a heat stabilizer, a lubricant, a flexibilizer, an antioxidant and filler. The MS resin and the PMMA resin are added, so that the glossiness and the heat resistance (vicat softening point) effect of the alloy material are effectively improved, the glossiness reaches 98.2, and the vicat softening point reaches 93 DEG C; the MS resin has good flowability and has an internal plasticizing effect, so that the processability of the PVC is improved; and the PMMA resin improves the weather resistance and the scratch resistance of the alloy material. The composite material can be applied to the fields of home decoration decorative plates, airplane interior trim parts and automobile interior trim parts.

The invention provides a thermal deformation and vicat softening point temperature measuring instrument calibration system, and relates to the field of thermal deformation and vicat softening point temperature measurement, the thermal deformation and vicat softening point temperature measuring instrument calibration system comprises a shell and a temperature acquisition module partially arranged in the shell, the temperature acquisition module comprises a plurality of temperature acquisition assemblies, an AD converter and a processor; the processor is used for acquiring the temperature of a medium at a plurality of key temperature calibration time points at a plurality of key positions in a medium box of the thermal deformation and vicat softening point temperature tester through the temperature acquisition module on the basis of a first heating program, and the first heating program is set on the basis of key heating parameters; the temperature calibration of the thermal deformation and vicat softening point temperature measuring instrument is carried out based on the temperature of the medium at a plurality of key temperature calibration time points at a plurality of key positions in the medium box of the thermal deformation and vicat softening point temperature measuring instrument, and the method has the advantage of improving the calibration efficiency and accuracy of the thermal deformation and vicat softening point temperature measuring instrument.