159 results about "Polyester matrix" patented technology

A method for dispersing sepiolite-type clay particles in a polyester matrix by melt-compounding a mixture of: sepiolite-type clay, at least one linear polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition; and, optionally, subjecting said nanocomposite composition to solid state polymerization to increase polyester molecular weight. Further described is a method for preparing a polyester nanocomposite composition from a masterbatch, comprising melt-compounding a mixture of: sepiolite-type clay, at least one polyester oligomer, and at least one polyester polymer to produce a nanocomposite composition containing a greater concentration of sepiolite-type clay than is desired in the final resin composition; optionally, subjecting said nanocomposite composition to solid state polymerization to increase the polyester molecular weight; and further melt compounding said nanocomposite composition with polyester polymer and, optionally, additional ingredients.

An embodiment of a phase change TIM of this invention comprises a polyester matrix with melting temperature near or below operating temperature (typically less than about 130° C.), thermally conductive filler with bulk thermal conductivity greater than about 50 W/mK, and optionally other additives. The polyester resin has improved thermo-oxidative stability compared to the polyolefin resins, thereby providing improved reliability performance during test.

A breathable film formed from a thermoplastic composition that contains a rigid renewable polyester and has a voided structure is provided. To achieve such a structure, a thermoplastic composition that contains a renewable polyester and polymeric toughening additive is extruded onto a surface to form a precursor film in which the toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. The precursor film is thereafter stretched or drawn at a temperature below the glass transition temperature of the polyester (i.e., “cold drawn”). Without intending to be limited by theory, the present inventors believe that the deformation force and elongational strain of the drawing process causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This creates a network of voids located adjacent to the discrete domains.

The invention relates to an inorganic-filling material full-biodegradation composite material with high compatibility and a preparation method thereof, belonging to the technical field of high polymer materials. The inorganic-filling material full-biodegradation composite material is prepared from the following components by weight: 5 to 70 parts of an inorganic-filling material full-biodegradation master batch and 30 to 95 parts of biodegradable polyester. The inorganic-filling material full-biodegradation composite material provided by the invention is fully biodegradable, has good processing performance, presents a good dispersion effect in a biodegradable polyester matrix identical to a master batch carrier and shows good compatibility between the master batch and a polyester matrix when the master batch carrier and the biodegradable polyester matrix are not same polyester. Addition of the master batch into the biodegradable polyester enables preparation cost for a biodegradable polyester product to be substantially reduced.

The invention discloses a conductive polyester/graphite oxide composite material and a preparation method thereof. The composite material is prepared from the following raw materials in part by mass: 0.25 to 10 parts of graphite oxide, 100 parts of terephthalic acid or ester thereof, 60 to 200 parts of alkaline glycol, 0.01 to 3 parts of catalyst, 0.01 to 0.5 part of stabilizing agent and 0 to 100 parts of dispersant. The polyester/graphite oxide composite material of the invention is prepared by polymerizing a polyester substrate and a nano-graphite packing in situ, has the percolation threshold of 0.5 to 1.0 weight percent, can achieve the electric conductivity of 10 to 5 S/cm when graphite content is 3.5 weight percent, and compared with a conventional natural graphite conductive composite material and an expanded graphite conductive composite material, can achieve the high properties of low packing amount and high electric conductivity without adding an auxiliary substrate, and can be widely applied in the fields of conductive materials, antistatic materials, electromagnetic shielding materials, microwave absorption and the like.

The invention discloses a high-partial-discharge-voltage photovoltaic backplane, which is formed by sequentially bonding an olefin copolymer layer, a weather-proof bonding layer, a polyester matrix layer and a weather-proof layer. The prepared backplane has high partial discharge voltage, and also has the good water vapor barrier property and the excellent mechanical strength and outdoor weather resistance. The photovoltaic backplane has excellent performances and is suitable for photovoltaic modules of large systems.

The invention discloses a preparation method and application for a biomass fibre-aliphatic polyester composite material macromolecular coupling agent. The preparation method comprises the following steps: (1) synthesis for a biomass constituent-based macromolecular coupling agent; (2) surface hydrophobic modification for biomass fibre raw materials; (3) compounding for the modified biomass fibre raw materials and an aliphatic polyester matrix. The method can be used for various aliphatic polyester matrixes and is low in raw material limit; moreover, the composite material product is wide in application and can be used for the fields of household appliances, automobile industry, packaging, daily necessities and the like. The method is low in production cost, beneficial to popularize and apply, and has great significance in the aspects of improving the utilization level of biomass raw materials, alleviating petroleum resource crisis, protecting environment, and the like.

The present invention discloses one kind of nanometer polyester/fibrous clay composite material and its preparation process and application. The nanometer polyester/fibrous clay composite material consists of polyester base and fibrous clay, which accounts for 0.1-10 wt% of the composite material and is rod crystals of 10-500 nm size dispersed in the polyester base. The nanometer polyester/fibrous clay composite material has relatively great molecular weight and less degradation after melt spinning. After the fiber of the composite material is drafted and oriented, the clay rod crystals with high length/diameter ratio are arranged in the drafting direction to strength the polyester fiber and raise the mechanical performance greatly. In addition, the clay rod crystals serve as the physical cross-linking points to limit the motion of great molecular chain, raise the heat resistance of the fiber and lower the dry heat shrinkage of the fiber.

The invention relates to an optical-scale polyester film, which comprises a polyester base film and bottom coatings, wherein the polyester base film only contains polyethylene glycol terephthalate; the bottom coatings are coated on two surfaces of the polyester base film; the thickness of each bottom coating is 0.05-0.3mu m; and each bottom coating contains colloidal silicon dioxide and crosslinking polystyrene microspheres. The polyester base film in the optical-scale polyester film does not contain silicon dioxide, and the transparency of the polyester base film can be guaranteed; the bottom coatings contain the crosslinking polystyrene microspheres serving as organic anti-adhesion agent and the colloidal silicon dioxide serving as inorganic anti-adhesion agent; rough surfaces can be formed on two surfaces of the polyester film, and the surface of the polyester film has good smooth property, anti-adhesion property, anti-scratching property and anti-falling property, thereby being convenient to process; the refractive index of the crosslinking polystyrene microspheres is similar to the refractive index of the polyethylene glycol terephthalate; therefore the refraction and the diffuse reflection of ray on a phase boundary of the anti-adhesion agent and polyester matrix can be effectively inhibited; and the ray transmittance is improved.

A film consisting essentially of a continuous phase linear polyester matrix having dispersed therein a non-crosslinked random SAN-polymer and dispersed or dissolved therein at least one ingredient from the group of ingredients consisting of inorganic opacifying pigments, whitening agents, colorants, UV-absorbers, light stabilizers, antioxidants and flame retardants, wherein the film is white, microvoided, non-transparent and axially stretched; the linear polyester matrix has monomer units consisting essentially of at least one aromatic dicarboxylic acid, at least one aliphatic diol and optionally at least one aliphatic dicarboxylic acid; and the weight ratio of the linear polyester to the non-crosslinked SAN-polymer is in the range of 2.0:1 to 19.0:1, wherein one of the said at least one aliphatic dimethylene monomer units is selected from the group consisting of neopentylene and 1,4-cyclohexanedimethylene in a concentration of 30 mole % or less of all aliphatic dimethylene monomer units; the use of the film as or in synthetic paper; an image recording element comprising the film; a process for the preparing of the non-transparent microvoided axially stretched film; and a process for obtaining a transparent pattern therewith.

The invention belongs to the technical field of nano materials and plastic processing and particularly relates to a modified carbon nanotube flame retardant reinforced polyester composite material and a preparation method thereof. The composite material is prepared from, at a minimum, 31.5-99.4wt% of polyester, 0.1-2wt% of modified carbon nanotubes and 0.5-5wt% of compatilizer. The molecular structural formula of the modified carbon nanotubes can be found in specification, wherein R is ethyl or phenyl group. All raw materials are evenly mixed, heated to 220-265 DEG C, subjected to melt blending, squeezed out and subjected to bracing, cooling, pelletizing and drying. The aggregation effect of the carbon nanotubes can be lowered by the adoption of the modified carbon nanotubes, the interfacial compatibility of the carbon nanotubes and polyester materials is improved, the dispersibility of the carbon nanotubes in polyester matrix is improved, and thus the flame retardant and mechanical properties of the composite material are improved.

A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

The invention relates to flame-retardant anti-dripping polyester fiber and a preparation method thereof. A phosphorus-based flame retardant and graphene oxide react under a certain condition to prepare a flame-retardant anti-dripping agent, then terephthalic acid and ethylene glycol are utilized as raw materials, the flame-retardant anti-dripping agent is introduced into a polyester matrix by an in-situ polymerization method to prepare flame-retardant anti-dripping polyester, and then the flame-retardant anti-dripping polyester fiber is prepared by a melt spinning assembly. A technology designed by the invention not only reduces an effect of the phosphorus-based flame retardant in a polyester polymerization process, but also utilizes excellent dispersing performance and anti-dripping performance effects of the graphene oxide to make a final product have flame-retardant anti-dripping performance. The flame retardance of the prepared flame-retardant anti-dripping polyester fiber is obviously improved, and the prepared flame-retardant anti-dripping polyester fiber can be widely applied to the fields of home textiles, clothes, sports, leisure and the like.

The invention provides a polyester and inorganic substance nano composite material and method for making it, wherein the particles of metallic oxide, inorganic non-metallic oxide or their composite oxides in nano scales is first pre-processed for reaction, then is placed in polymerization reaction device along with the intermediate of polytetramethylene terephthalate (PET) for blending, obtaining the nano composite material integrating inorganic substance and polyester base through chemical bonds dispersed in nano scales evenly.

The invention provides a polyester and inorganic silicate nano composite material and method for making it, wherein the inorganic silicate metallic oxide prepared by porcelain clay and muscovite is first pre-processed for reaction, then is placed in polymerization reaction device along with polytetramethylene terephthalate (PET) for condensation copolymerization, thus obtaining the high-performance polyethylene glycol terephthalate alcohol and inorganic salt nano composite material integrating inorganic silicate and polyester base through chemical bonds dispersed evenly in nano scale.

The present invention relates to a thermal image recording element comprising a microvoided layer comprising a continuous phase polyester matrix having dispersed therein crosslinked organic microbeads and non-crosslinked polymer particles that are immiscible with the polyester matrix of the microvoided layer.

The invention discloses a method for preparing an aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers. The method comprises the steps of (1) preparation of an AKD emulsion and surface treatment of biomass fibrous raw materials through the AKD emulsion, (2) curing treatment of the surface modification fibers, and (3) composition of the surface modification biomass fibers and an aliphatic polyester matrix. The hydrogen bond bonding effect between the fibers obtained through surface hydrophobic treatment is weakened, agglomeration of the fibers in the aliphatic polyester matrix is reduced, and the interfacial strength of the composite material is improved, so that the composite material has the better comprehensive performance and particularly the mechanical performance. The composite material is wide in application range, and can be used for the fields of household electric appliances, automobile industry, packaging, daily necessities and the like, and the method is low in cost, simple in technology, convenient to implement and beneficial to application and popularization, and is of great significance in improving the utilization level of biomass raw materials, relieving the oil resource crisis, protecting the environment and the like.

The invention relates to a polyester/one-dimensional nanometer silicate composite material and the preparing method, comprising putting the one-dimensional nanometer silicate after decentralized processing and polyester monomer into polymerization reactor for condensation copolymerization, then getting the high property product formed through the one-dimensional nanometer silicate chemical bond combination with polyester monomer. The product is characterized by the considerable improvement in, pull resistance and contour machining property and by the complete change of the low efficiency of previous PET as engineering material. The invention discloses adapted forpolyester manufacturing technique such as direct esterification or ester exchange and can get the product with good combination property such as high crystallization velocity and high heat resistance in the precondition of not increasing the production cost.

The invention relates to a method for preparing nano composite material of hydroxyl-functional polyester/montmorillonite, belonging to the technical field of polymer material. The method comprises the following steps: firstly intercalating an onium catalyst into sodium-based montmorillonite layers at 60 DEG C to 100 DEG C by adopting a cation exchange method to obtain organic modified montmorillonite; then, mixing the organic modified montmorillonite, dicarboxylic acid, dibasic epoxy compound and monocarboxylic acid for carrying out in-situ polymerization; melting a monomer dibasic epoxy compound and the dicarboxylic acid in a polymerization process for intercalating the organic modified montmorillonite; polymerizing the monomer among the montmorillonite layers and outside the montmorillonite under the action of the onium catalyst so that the montmorillonite sheet layers are pushed off; and finally uniformly distributing the sheet layers in a polyester matrix with a hydroxyl functional group so as to prepare the nano composite material of intercalating or stripping type hydroxyl functional polyester/montmorillonite. The method has the advantages of simplicity and low cost and can be applied to bulk industrial production; and the material can be widely applied to the field of biodegradable materials.

The invention provides an antibacterial polyester fiber based on silver-loaded zirconium phosphate and a preparation method thereof. The antibacterial polyester fiber based on the silver-loaded zirconium phosphate is characterized in that the fiber comprises a polyester matrix, and silver-loaded zirconium phosphate powder is dispersed in the polyester matrix. The preparation method includes the steps that silver-loaded zirconium phosphate nano-powder is prepared; the silver-loaded zirconium phosphate nano-powder, terephthalic acid and dihydric alcohol are added into a polyester reaction still, silver-loaded zirconium phosphate antibacterial polyester is prepared through in-situ polymerization, and the antibacterial polyester fiber based on the silver-loaded zirconium phosphate is prepared by means of melt direct spinning; or the silver-loaded zirconium phosphate antibacterial polyester is pelleted, so that a silver-loaded zirconium phosphate antibacterial polyester master batch is obtained, and the antibacterial polyester fiber based on the silver-loaded zirconium phosphate is prepared through a master batch blended spinning method. The antibacterial polyester fiber prepared through the method has the advantages of being efficient and lasting in antibacterial action.

The invention belongs to the field of preparation of a nano composite material, and especially relates to an aliphatic polyester-nano hydroxyapatite composite material and a preparation method thereof. The preparation method comprises the following steps: 1) employing coprecipitation and a hydrothermal method or a sol-gel/static spinning method, synthesizing a hydroxy apatite nano rod or nano fiber, 2) realizing surface cladding modification on nano hydroxy apatite through dopamine oxidation auto-polymerization; and 3) employing a solution blending method, the aliphatic polyester/nano hydroxy apatite composite material film or a porous support can be prepared. The method has advantages of mild modification condition, simple operation, and obvious modification effect, the aliphatic polyester-coated hydroxy apatite is uniformly dispersed in an aliphatic polyester matrix, interface bonding property is improved, the mechanical properties of the aliphatic polyester-coated hydroxy apatite composite material is obviously improved, and the composite material can be used in relative filed of bone tissue regeneration restoration.

The invention belongs to the field of high polymer materials and in particular relates to an uvioresistant high-transmitting polyester film and a preparation method thereof. The uvioresistant high-transmitting polyester film comprises an uvioresistant polyester layer and silica film layers, wherein the silica film layers are arranged on one surface or two surfaces of the uvioresistant polyester layer; the uvioresistant polyester layer is formed by dispersing an uvioresistant agent in a polyester matrix, and the uvioresistant agent comprises nano-titanium dioxide and nano-zinc oxide. The preparation method comprises the following steps: preparation of the uvioresistant polyester layer; corona treatment; and preparation of silica sol and film coating. According to the technical scheme, the uvioresistant agent is used; compared with current single titanium dioxide, composite powder has low scattering capacity to visible light of 400-700nm and can well absorb ultraviolet light of 200-350nm in spectrum. Sol prepared by sol-gel processing is used for improving permeability under a proper film coating condition, and finally the uvioresistant high-transmitting polyester film is prepared.

The invention relates to a polyester reflecting film and a preparation method thereof. The polyester reflecting film comprises one or more surface layers and a middle porous core layer; the core layer comprises the following components in parts by weight: 40-90 parts of polyester slices, 1-55 parts of methyl isobornyl acrylate copolymers with epoxy groups, 0.05-1 part of a heat stabilizer and 0.05-1 part of a light stabilizer; and the surface layers comprise the following components: 80-95 parts of polyester slices, 5-20 parts of inorganic particles, 0.05-1 part of heat stabilizer and 0.05-1 part of light stabilizer, wherein the methyl isobornyl acrylate copolymers with epoxy groups have a glass transition temperature higher than 130 DEG C; and the grain size of the dispersing phase of the copolymer in the polyester matrix is 0.05 micron to 2.0 microns. According to the polyester reflecting film and the preparation method thereof, the methyl isobornyl acrylate copolymers with epoxy groups are used as pore-forming agent, so that the polyester reflecting film has the characteristics of being simple in formula, low in manufacturing cost, low in hot-shrinkage rate and good in mechanical performances.