40 results about "Vicat softening point" patented technology

The invention provides a special flame-retardant PC / ABS alloy material for a high-heat-resistant power battery accessory and a preparation method of the special flame-retardant PC / ABS alloy material, and relates to the technical field of high polymer materials. According to the invention, PC and ABS with specific indexes are selected to improve the strength and heat resistance of the basic resin. Three combustion improvers with different flame-retardant mechanisms and an activated 4A molecular sieve are used as auxiliary flame-retardant synergists, so that the effect of the auxiliaries is exerted to the greatest extent, the total addition amount is reduced, and the loss of material performance is reduced; the heat resistance of the material is enhanced by matching the organic polymer heat-resistant agent and the inorganic nanoparticles, and the heat deformation temperature and the vicat softening point are improved by a relatively low addition amount. Compared with a general grafting toughening agent and an MBS toughening agent, the impact-resistant toughening agent with a core-shell structure of an organic silicon system is selected, so that the low-temperature impact resistance and the weather resistance are more excellent, the synergistic effect on a flame-retardant system is good, and the material is endowed with a good appearance.

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 discloses a polypropylene film and a polypropylene decorative film, the polypropylene film comprises a printing surface layer, the printing surface layer comprises the following raw materials by weight: 46-65 parts of polypropylene; 4 to 10 parts of grafted polypropylene; 8-25 parts of a polar ethylene copolymer; the vicat softening point temperature of the polypropylene is 100-125 DEG C; and the Vicat softening point temperature of the printing surface layer is 90-110 DEG C. Therefore, the polypropylene film provided by the invention has excellent ink adhesive force, and especially can keep good ink adhesive force after being attached to a transparent mask at a high temperature.

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.

The invention discloses a PVC (polyvinyl chloride) composition and a preparation method thereof, and belongs to the technical field of high polymer materials, the product takes an organic maleimide derivative and methyltin mercaptide compounded inorganic titanium dioxide as a heat stable component, so that the heat stability of the product can be remarkably improved, and the heat stability of the product is improved; the low discoloration performance can still be maintained in the processing environment of 190 DEG C, meanwhile, the vicat softening point of the product can also be maintained at a high level, the torque rheology reaches the standard, and the comprehensive processing performance is excellent.

The invention belongs to the technical field of wood-plastic plates, and particularly relates to a PE wood-plastic composite material and a preparation method thereof. The carbon beads are introduced into a PE wood-plastic formula system to replace traditional calcium powder / talcum powder, a lubricant, an antioxidant and other raw materials, and meanwhile, through the synergistic effect of HDPE and LDPE in different proportions, on one hand, the problem of precipitation caused by lubricating components is solved, on the other hand, various mechanical properties of the PE wood-plastic composite material are improved, and the service life of the PE wood-plastic composite material is prolonged. Wherein the minimum concentrated load can be increased to 30%, the linear expansion coefficient and the shrinkage rate can be reduced by 40%, the vicat softening point can reach 127 DEG C, and the technical problems that the PE wood-plastic composite material is large in precipitation amount and prone to deformation in application are solved.

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 present invention belongs to the technical field of polymer materials, and specifically relates to a reactive vinyl chloride polymer and a preparation method thereof. Conventional toughening modifiers such as MBS, EVA, and CPE can all toughen and modify PVC, but the resulting PVC products have a relatively low Vicat softening point and hardness, and are prone to deformation after long-term use. In response to the above problems, the present invention provides a reactive vinyl chloride polymer, which uses vinyl chloride as a main monomer and vinyl acetate, a silane coupling agent, and an acrylate with a low glass transition temperature as auxiliary monomers. A vinyl chloride polymer with a low glass transition temperature, a wide molecular weight distribution range, and a reactive group alkoxysilane is obtained through suspension polymerization, which takes into account the performance requirements of impact resistance, tensile yield strength, Vicat softening point, and flexural modulus. It can not only be used as a processing aid modifier to achieve a better plasticizing effect, but also make the cost advantage of the resulting PVC products more prominent.

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.

To provide a food-packaging molded container for microwave applications, which is economically superior without requiring unnecessary steps or materials, and in which the gloss level of the inner container surface is 50% or more.SOLUTION: A low heat-resistant polystyrene-based resin foam layer (11) employs, as a base resin, (A) a polystyrene-based resin composition comprising a polystyrene-based resin having a Vicat softening point of 105°C or lower, or (B) a polystyrene-based resin composition comprising 89 to 99 mass% of a polystyrene-based resin having a Vicat softening point of 105°C or lower and 1 to 11 mass% of a polyphenylene ether resin. A high heat-resistant polystyrene-based resin foam layer (12) employs, as a base resin, (C) a polystyrene-based resin composition comprising 70 to 86 mass% of a polystyrene-based resin having a Vicat softening point of 105°C or lower and 14 to 30 mass% of a polyphenylene ether resin, or (D) a polystyrene-based resin composition containing 80 mass% or more of a styrene-(meth)acrylic acid copolymer resin.SELECTED DRAWING: Figure 2

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 discloses a composite material and a preparation method thereof, an isolating membrane, a pole piece, a battery and an electric device, the composite material comprises an acrylate polymer and a dispersant, and the Vicat softening point of the composite material is 5-60 DEG C. Therefore, when the composite material is used for the isolating membrane, cold pressing bonding between the isolating membrane and a pole piece can be realized, and the cycle performance of a battery is improved.

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.

The present invention discloses a polymer for improving the heat distortion temperature of ABS. The preparation raw materials include, by weight: 25 - 50 parts of styrene maleic anhydride copolymer, 50 - 75 parts of aniline compound, and 0.1 - 2 parts of catalyst. In the present invention, through the imidization reaction of the styrene maleic anhydride copolymer with a weight ratio of styrene to maleic anhydride of (1 - 4):1 and aniline first, and then polymerization, the conversion rate of maleimide is increased, the residue of maleic anhydride on the main chain is reduced, and by using 4-dimethylaminopyridine as the catalyst, the styrene-N-phenylmaleimide polymer can be prepared at a lower reaction temperature and in a shorter reaction time, improving the production efficiency and reducing the energy consumption. At the same time, by blending with ABS at a weight ratio of 1:4, the heat distortion temperature and Vicat softening point of ABS are improved, and the compatibility is good and the mechanical properties are excellent after blending with ABS.

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 design product: Temperature measuring instrument (heat distortion, Vicat softening temperature). 2. Use of the design product: Used for measuring the heat distortion and Vicat softening temperature of non-metallic materials (such as plastics, rubbers, nylons, electrical insulating materials, etc.). 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view 1.

A molded article having improved heat resistance, the molded article manufactured from a blend composition including: (a) greater than or equal to 90 percent by weight of at least one partially neutralized ethylene (meth)acrylic acid copolymer or ionomer; wherein the acid content of the partially neutralized ethylene (meth)acrylic acid copolymer is from 5 weight percent acid to 30 weight percent acid; and / or wherein the neutralization level of the ionomer is greater than or equal to 10 percent by weight; and (b) greater than or equal to 1 percent by weight of at least one bisamide having the following general chemical structure: (I) wherein R1 and R2 are independently selected from saturated alkyl groups having from C1 to C30 carbon atoms; wherein R3 and R4 are independently selected from hydrogen or an alkyl group having from C1 to C4 carbon atoms; wherein the molded article of the present invention exhibits a percent improvement in VICAT softening point, as compared to a molded article made with an ionomer without a bisamide additive, of at least 3 percent, and wherein the molded article of the present invention exhibits a percent difference in haze, as compared to a molded article made with an ionomer without a bisamide additive, of less than or equal to 15 percent.

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 present invention relates to a high temperature resistant and easily broken polystyrene composite material and its preparation and application, the components include: polystyrene, styrene-butadiene copolymer, styrene-maleic anhydride copolymer. The present invention has a high Vicat softening point temperature, is not easily deformed by heat, and the sampling rod made of the composite material of the present invention is suitable for sterilization by moist heat sterilization; at the same time, the sampling rod has good easy-to-break performance, and can be broken by bending to a certain angle, is not too brittle or too tough, and has good application prospects.

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 present invention relates to a process for producing composites from cellulosic fibers, which includes the steps of selecting cellulosic fibers, treating the fibers by mechanical means to reduce their length, adding the resulting fibers to a mixing device, activating the heating and / or rotating means until temperatures between 40-120°Care reached in the mixing device, adding at least one thermoplastic polymer and additives to the mixing device, raising the temperature above the VICAT softening point and / or melt temperature range of the thermoplastic polymer(s) until adhesion and / or wetting of the thermoplastic polymers and additives onto the fibers occurs, stopping the heating, transferring the resulting material to a cylindrical cooling drum, maintaining the rotation of the rotating means until the temperature of the resulting material is equal to or below 80°C, discharging the resulting material onto a vibrating sieve with a mesh diameter between 3-6 mm, and feeding the obtained materials into an extruder to produce the final composite product.

The present invention relates to a heat-resistant polycarbonate with improved impact resistance and a preparation method thereof. It contains structural units derived from bisphenol compound (I), the polycarbonate has a weight-average molecular weight of 5000 - 300000, the Vicat softening point temperature of the polycarbonate is 170 - 200 °C as measured by ASTM D1525 standard, and its notched impact strength is 400 - 800 J / m as tested by ASTM D256 standard.

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.