50results about How to "Low moisture resistance" patented technology

A positive electrode active material for a non-aqueous electrolyte secondary battery is provided. The positive electrode active material includes a composite oxide containing lithium and metal M other than lithium, and M contains Ni, Mn, and Co. The molar ratio of Ni to the total of Ni, Mn, and Co is from 0.45 to 0.65, and the molar ratio of Mn to the total of Ni, Mn, and Co is from 0.15 to 0.35. The positive electrode active material has a pressed density under a compression of 60 MPa of 3.3 g/cm³ or more and 4.3 g/cm³ or less. The positive electrode active material has a volume resistivity under a compression of 60 MPa of 100 Ω·cm or more and less than 1000 Ω·cm.

A method of making a light emitting device includes mixing a glass powder with a phosphor powder including at least one of a sulfide phosphor, an aluminate phosphor and a silicate phosphor to produce a mixed powder in which the phosphor powder is dispersed in the glass powder, heating and softening the mixed powder to provide an integrated material, and subsequently solidifying the integrated material to provide a phosphor-dispersed glass, and fusion-bonding the phosphor-dispersed glass onto a mounting portion on which a light emitting element is mounted by hot pressing, and simultaneously sealing the light emitting element with the phosphor-dispersed glass on the mounting portion.

The invention discloses a resin composition which comprises the following solids by weight: (a) 100 parts of a bismaleimide resin prepolymer, (b) 5-80 parts of cyanate ester, (c) 0-50 parts of a flame retardant and (d) 0-65 parts of inorganic filler, wherein the bismaleimide resin prepolymer is obtained by carrying out reaction on an allyl compound and bismaleimide resin and the ratio of bismaleimide resin and allyl compound by weight is 100: (10-120). According to the resin composition disclosed by the invention, by adopting siloxane containing allyl at the tail end as a modifier of bismaleimide resin and limiting the content of siloxane in the modifier, unreacted siloxane resin is not generated in reaction, so that the advantages and characteristics of siloxane resin can be fully exerted and the interlaminar adhesive force at the high temperature is greatly improved. Moreover, the thermal expansion properties of the solids are optimized, so that the resin composition satisfies the requirements on high precision electronic substrate materials.

The invention discloses a thermosetting resin composition. The thermosetting resin composition comprises the following components in parts by solid weight: (a) 5-80 parts of modified epoxy resin; (b) 5-80 parts of cyanate ester resin; (c) 0-50 parts of fire retardant; (d) 0-100 parts of inorganic filler; and (e) 0-5 parts of curing accelerator. A preparation method of the modified epoxy resin comprises the following steps of: adding one or more of unsaturated monomers which have double bonds and in which an initiator is dissolved into the epoxy resin; heating to 30-60 DEG C and stirring uniformly; and then, heating to 60-150 DEG C, and performing a reaction for 2-8 hours. According to the thermosetting resin composition disclosed by the invention, the unsaturated monomers with double bonds are added into the epoxy resin for modification, therefore, compared with the traditional epoxy resin composition prepared by simple blending, the thermosetting resin composition disclosed by the invention has more excellent cohesiveness, thermal stability and wet and heat resistance; and a laminated board manufactured by using cyanate ester as a curing agent has low dielectric constant, low dielectric loss, high heat resistance and good wet and heat resistance.

The invention provides a gas generating agent and a preparing method of the gas generating agent. The gas generating agent is of an A/B core shell structure. A core A comprises a first combustible agent and a first oxidizing agent, and a shell B comprises a second combustible agent and a second oxidizing agent. The combustion speed of the second combustible agent is lower than that of the first combustible agent, and the gas generating agent not only is adjustable in combustion speed and suitable for gas generators of various gas bags, but also is high in gas generation efficiency, long in service life and little in residue. Meanwhile, a coating structure can enable the gas generator to be longer in acting time and also has a very good moisture proof effect, so that service life of the gas generating agent is greatly prolonged, and using performance is very good. The gas generating agent is simple in technology, easy to prepare, free of harm and pollution and easy to produce in a large-scale mode.

The invention discloses a rat-proof and ant-proof inflaming-retarding environment-friendly power cable. A cable core of the power cable is formed by twisting a plurality of insulation wire cores. Each insulation wire core is composed of a conductor, an inner mica tape fireproof layer and an insulation layer from inside to outside. Gaps among the wire cores are provided with a packing layer. A lining layer is arranged outside the packing layer. A metal shielding layer is arranged outside the lining layer. A water-blocking polyester band, a waterproof isolation layer, an outer mica tape fireproof layer, an outer band wrapping layer, a restrictive coating, an insulation layer and rat-proof and ant-proof synthesis neoprene tape are arranged outside the metal shielding layer. The rat-proof and ant-proof synthesis neoprene tape is wrapped with an inner rat-proof and ant-proof synthesis neoprene sheath, the inner rat-proof and ant-proof synthesis neoprene sheath is longitudinally wrapped with an embossed alloy aluminum plastic composite belt, and the outmost layer is wrapped with an outer rubber sheath.

A resin composition which is excellent in quick curing and can be used for curing in conventionally used ovens, and a semiconductor device which is excellent in reliability such as solder crack resistance or the like when the resin composition is used as a die attach material for semiconductor. Further preferably, a resin composition which has a sufficient low stress property, good adhesion and excellent bleeding property.

A resin composition comprising a filler (A), the compound (B) comprising a structure represented by the formula (1) and a functional group represented by the formula (2) and a thermal radical initiator (C), and substantially not containing a photo polymerization initiator.

The composition comprises a polymer emulsion containing, for example, polyvinylidene chloride having a particle size distribution finer than 10 mu , and an additive with generally the same size distribution, for example aluminum silicate, calcium carbonate, polyvinyl acetate polystyrene, polyacrylates, carboxylated styrene butadiene, or mixtures thereof in emulsion or powder form which is capable of interstitial combination with the polymer particles. The composition has a critical pH between about 2 and 9. The method of repulping coated packaging is also disclosed.

Provided are: a conductive resin paste which has a low silver content and can be cured at a lower temperature in a shorter time than conventional resin pastes, while having a low resistance, high adhesion and excellent storage stability as a material for internal electrodes of solid electrolytic capacitors, conductive aluminum solid electrolytic capacitors and the like; and an electronic element which uses this conductive resin paste. A conductive adhesive composition which contains (A) a silver powder and (B) an inorganic powder filler having a specific gravity of 4 or more as conductive powders, (C) a phenoxy resin and (D) a blocked isocyanate as binder components, and (E) a solvent. This conductive adhesive composition is characterized in that: the silver powder (A) is blended in an amount of 20-50% by weight relative to the total weight; the inorganic powder filler (B) is blended in an amount of 60% by weight or less relative to the total weight; the amount of the blocked isocyanate (D) is 5-90 parts by weight relative to 100 parts by weight of the phenoxy resin (C); and the binder components ((C) + (D)) are contained in an amount of 5-14% by weight relative to the total weight.

A curable coating composition comprising: (a) a silicate, such as sodium silicate, potassium silicate or lithium silicate; (b) a phosphate, such calcium phosphate, magnesium phosphate or sodium phosphate; and (c) a metal oxide, such as magnesium oxide, aluminium (III) oxide, scandium (III) oxide, yttrium (III) oxide, or zirconium oxide. Such curable coating compositions may be used as non-thermochromic (tailored based on expected operating environment) thermal control coating compositions for application to spacecraft and components thereof. As an alternative metal oxide component, for use in lower temperature applications, or in applications for which thermochromism at elevated temperatures is not a concern, the metal oxide may comprise zinc oxide. Also provided is a curable coating composition comprising: (a) a silicate (e.g. as above); (b) a phosphate (e.g. as above); and (c) a metal sulphate, such as a barium sulphate. Cured coatings are also provided, as are thermal control coatings, thermal control paints, and processes for making coated substrates.

Provided are an epoxy resin, a polyvalent hydroxy resin and a composition thereof which have excellent curability, which provide cured products with excellent mechanical strength, flame resistance, humidity resistance, low elasticity, etc., and which are suitable for applications such as encapsulation of electronic components, circuit board material, etc. This polyvalent hydroxy resin is an aralkyl denatured polyvalent hydroxy resin which is obtained by reacting a narrow disperse polyvalent hydroxy compound with an aralkylating agent of styrenes, etc., the narrow disperse polyvalent hydroxy compound comprising 15% or less of n=1 component, and 50% or more of a total of n=2 and n=3 components, and having Mw/Mn of 1.2 or less. In addition, the present invention is an epoxy resin obtained by reacting the aralkyl denatured polyvalent hydroxy resin with epichlorohydrin. Furthermore, the present invention is an epoxy resin composition which contains, as an essential component, the aralkyl denatured polyvalent hydroxy resin or the epoxy resin.

The invention relates to the technical field of electric equipment transformers, in particular to an epoxy resin insulating transformer, which comprises a high-voltage coil and a low-voltage coil arranged coaxially, wherein the high-voltage coil is arranged on the outer side of the low-voltage coil; an epoxy resin insulating layer formed by pouring is formed between the high-voltage coil and the low-voltage coil; and the epoxy resin insulating layer comprises epoxy resin, a filling agent, a curing agent and a toughening agent. Due to the adoption of the formula, the epoxy resin insulating transformer has high heat resistance and high toughness during running, and can run under overload for a long time. Meanwhile, an annular radiating channel is formed in the epoxy resin insulating layer, so that the radiating effect is enhanced, and safety and reliability are realized.

The invention discloses a high performance two-component polyurethane pressure sensitive adhesive and a preparation method and application thereof. The high performance two-component polyurethane pressure sensitive adhesive comprises a component (A) and a component (B). The component (A) is a glue liquid prepared from 10-12% by weight of a hard monomer, 24-30% by weight of a soft monomer, 2.5-4% by weight of a chain extender, 0.08-0.12% by weight of an organotin catalyst and 54-60% by weight of a solvent. The component (B) is an epoxy curing agent. The weight of the component (B) is 0.1% thatof the component (A). The high performance two-component polyurethane pressure sensitive adhesive has low adhesion, low peeling force and good moisture resistance.

The invention relates to a preparation method of high density polyethylene resin special for abnormal-shape bottles; in a granulation workshop section of a high density polyethylene device, 0.01-0.8% by mass percentage of a composite processing additive is added for direct preparation of the high density polyethylene resin special for the abnormal-shape bottles; the composite processing additive is prepared from the following substances: by mass, 10-20% of an antioxidant, 35-50% of a lubricant, 20-30% of a fluorine elastomer and 15-20% of oxidized polyethylene wax; the resin has the characteristics of moderate melt strength and wide molecular weight distribution, and the characteristics are necessary for a special material suitable for blowing the abnormal-shape bottles; the resin has excellent processing performances, and solves the problems that: during production of the abnormal-shape bottles by use of blend resin, the produced abnormal-shape bottles have unsmooth surfaces and uneven wall thickness, articles contained in the abnormal-shape bottles may produce peculiar smell, and the like.

Disclosed is a coating composition for wet coating to block ultraviolet light radiation as being applied on a vehicle glass. The composition comprises: a binder including an amount of about 15 to 20% by weight of tetraethoxysilane (TEOS) and an amount of about 10 to 15% by weight of glycidoxypropyltrimethoxysilane (GPTS), an amount of about 20 to 35% by weight of an organic solvent, an amount of about 0.5 to 2% by weight of a curing agent, an amount of about 0.1 to 0.5% by weight of a leveling agent, an amount of about 10 to 40% by weight of a hydrophobically surface-treated inorganic nanosol, an amount of about 8 to 12% by weight of an inorganic ultraviolet blocking agent and an amount of about 1 to 3% by weight of a fluorescent whitening agent, all these % by weights based on the total weight of the coating composition.

Accordingly, the coating composition may be used as a vehicle glass coating agent due to substantially improved abrasion resistance and durability.

The invention discloses a damp-proof heat preservation layer material for a floor. The material is prepared from the following raw materials in parts by weight: 70 to 85 parts of an ethylene-vinyl acetate copolymer, 14 to 19 parts of methyl vinyl phenyl silicone rubber, 18 to 23 parts of an elastomer, 6 to 9 parts of a dimethyl siloxane-ethylene oxide copolymer, 4 to 7 parts of expanded perlite powder, 2 to 4 parts of aluminum silicate fibers, 1.7 to 2.4 parts of a foaming agent, 0.6 to 0.8 part of an auxiliary foaming agent and 4 to 6 parts of other auxiliary agents. The damp-proof heat preservation layer material for the floor is an EVA foaming material, has a low heat conductivity coefficient and is good in heat preservation effect, low in water absorption rate, good in damp-proof effect, light in weight, high in elasticity, small in permanent compression deformation, and durable in use.

The invention relates to a novel plastic steel door-window sectional material comprising the following raw materials by weight: 70-80kg of resin, 20-26kg of rock powder, 3-4kg of titanium pigment, 3-4kg of precipitant, 8-9kg of chlorinated polyethylene, 0.4-0.8kg of modified resin, 10-14g of ultramarine, 10-14g of whitening agent, 40-60g of polyethylene wax, 70-90g of stearic acid and 10-12g of ammonium polyphosphate. According to the novel plastic steel door-window sectional material, the resin is used as the main raw material, the rock powder for reducing the product cost as well as the titanium pigment, whitening agent and ultramarine achieving a whitening effect are added to ensure that the product can not turn yellow when used for a long time, and chlorinated polyethylene with impact resistance as well as PE wax and stearic acid for lubrication are added at the same time. The plastic steel door-window sectional material disclosed by the invention has relatively strong corrosion resistance, ultraviolet resistance, fire resistance, insulating property and the like, and is high in safety factor, low in cost and suitable for the level of mass consumption.

The invention relates to a plant fiber sun visor and a manufacturing process thereof. The plant fiber sun visor comprises a fabric layer and a coconut fiber filament base material which are arranged from top to bottom, the fabric layer and the coconut fiber filament base material are subjected to hot press molding, and the coconut fiber filament base material is formed by hot press molding of an adhesive film, a mixed fiber layer, an adhesive film and non-woven fabric which are arranged from top to bottom. The mixed fiber layer is formed by mixing coconut fibers and polypropylene fibers according to the ratio of 55%-65%: 45%-35%, and conducting opening, carding, stacking and lapping, and rolling, heating and shaping, a coconut fiber and PP material combined plate is adopted for replacing an existing glass fiber material plate, the design is reasonable, the formed sun visor and ceiling have high rigidity and temperature resistance, waste can be recycled, and is easy to decompose, and the sun visor has the effects of high toughness, low VOC (Volatile Organic Compounds), bacterium resistance and moisture resistance, and is environmentally friendly and healthy.