444results about How to "High haze" patented technology

A light source comprising sidelight type backlight light guide plate (L), wherein a transmittance angle dependent layer (T1) which transmits normally incident light and reflects obliquely incident light is disposed on one surface of the sidelight type backlight light guide plate (L), and a reflection plate (R) having a repetitive slope structure is disposed on the other surface of the sidelight type backlight light guide plate (L). The invention light source is less in absorption loss due to repetition of light reflection and the like.

The invention discloses an anti-glare flame-retardant polycarbonate material which comprises the following components by weight percent: 85-95 percent of polycarbonate, 2-12 percent of flame retardant, 0.1-1 percent of flame-retardant synergist, 0.1-5 percent of anti-glare agent, 0.3-2 percent of anti-ultraviolet agent, 0.05-3 percent of blue light absorbent, 0.2-3 percent of antioxidant and 0.2-2 percent of lubricating agent. The anti-glare flame-retardant polycarbonate material not only has an excellent anti-glare function, but also has higher light transmittance, and is capable of absorbing the blue wave band of the LED lighting spectrum at the same time. The invention further discloses a preparation method of the anti-glare flame-retardant polycarbonate material, which comprises the following steps: firstly preparing flame-retardant masterbatches, organic silicon microbead anti-glare masterbatches and blue light absorption masterbatches, and then preparing the anti-glare flame-retardant polycarbonate material, so that the performance anti-glare flame-retardant polycarbonate material is improved. The anti-glare flame-retardant polycarbonate material is particularly suitable for preparing an optical housing for LED lighting.

Lenses and bezels for lamps provide an appealing aesthetic look in the form of a colored glow at the edges of the lens or bezel by incorportation of an photoluminescent material in a molded polycarbonate body. The lenses are particularly suitable for use as an automotive outer lens, and can also improve the quality of the light emitted through this outer lens by interacting with the light bulb. The emitted beam is of a legal color and intensity as defined per the SAE J578 standard. The lighting performance may also be improved in such manner as reducing glare, increasing brightness or producing a beam that enhances road visibility at night to the human eye.

The invention provides a light diffusion agent mother material used for a light diffusion film, a preparation method and application thereof. A light diffusion agent is compounded from organic polymer cross linking microspheres with different refractive indexes and grain diameters, the light diffusion agent mother material is prepared from 100 weight parts of polyester resin, 60 to 100 weight parts of compounded light diffusion agents and 1 to 7 weight parts of diffusion resin through high-speed diffusion and fused extrusion grain cutting by a double-screw extruding machine. The invention also provides a high-transparency heat-resistance light diffusion film prepared by using the light diffusion agent mother materials as additives. The light diffusion layer of the light diffusion film is formed by mixing the light diffusion agent mother materials and polyester slices according to the mixture ratio of 40 to 60 weight percent of polyester slices and 40 to 60 weight percent of the light diffusion agent mother materials. The light diffusion film prepared by the invention has high light transmission rate, high mist degree, excellent heat resistance performance and excellent dimension stability, and is particularly suitable for being used as the light diffusion film in a back light module of a large-dimension liquid crystal display.

The invention discloses a PC (Polycarbonate) material with an excellent transparent light diffusion function and a preparation method thereof. The PC material is composed of polycarbonate, flame retardant masterbatch, an auxiliary flame retardant, a compound light diffuser, an antioxidant, a flame retardant synergist, a lubricant and other auxiliaries. The principle ingredient of the PC material is PC resin; the PC material is extruded by two steps, wherein the first step is to blend a sulfonate type major flame retardant and an organic silicon flame retardant with the PC resin by melting and granulate the mixture through extrusion by virtue of a twin-screw extruder so as to obtain the light diffusible flame retardant masterbatch, and the second step is to add the compound light diffuser, the flame retardant masterbatch, the antioxidant, the flame retardant synergist, the lubricant and other auxiliaries for further melting blending by taking PC as the major ingredient, and then extrude and granulate the mixture. The flame-retardant light diffusible PC material provided by the invention can be widely applied to an LED (Light-Emitting Diode) lamp, the backlight of a liquid crystal display, a transmission type screen, a decorative lighting billboard, an advertisement lamp box and the like in the lighting field.

Unique transparent polypropylene articles that can be tailored to become opaque when exposed to a sufficiently high temperature and which returns to substantially the same transparency level upon cooling. Such formulations include non-polypropylene polymeric constituents that exhibit refractive index measurements similar to the base clarified polypropylene at lower temperatures, as well as melting temperatures well below that for the base clarified polypropylene. Upon exposure to temperatures in close proximity to the melting temperature of the non-polypropylene polymeric constituents, the refractive index for such constituents will then become modified to the extent that the overall article appears at least partially opaque. In particular, the non-polypropylene polymeric constituents should exhibit melting temperatures well below that for the base clarified polypropylene, from about 60 to about 100° C. (well below the typical polypropylene melting temperatures of roughly about 160-190° C. for homopolymer and about 140-170° C. for typical random copolymer, both nucleated or non-nucleated). In this manner, a temperature sensitivity measuring thermoplastic article may be provided, and may be tailored to specific temperature ranges dependent on the melting temperatures exhibited by the non-polypropylene polymeric constituents. Methods of measuring temperature levels via the transformation of transparent polypropylene formulations to at least partially opaque versions thereof are also encompassed within this invention.

The invention discloses a high-alumina glass frosting liquid and a preparation method thereof. The high-alumina glass frosting liquid comprises the following components in parts by weight: 30-45 partsof ammonium bifluoride, 5-15 parts of citric acid, 2-5 parts of barium sulfate, 4-10 parts of starch, 2-6 parts of bentonite, 10-20 parts of ferric trichloride, 5-15 parts of potassium fluoride, 6-13parts of potassium nitrate, 2-6 parts of hydrofluoric acid and 10-30 parts of water. The frosting liquid is low in manufacturing cost and high in production yield; and anti-dazzle glass prepared fromthe frosting liquid has the characteristics of high glossiness, low flash point, low roughness and good anti-dazzle effect.

The invention relates to a matte BOPP (Biaxially-oriented Polypropylene) film for leather transferring and a preparation method thereof. The matte BOPP film consists of an inner surface layer, a core layer and an outer surface layer, and is prepared by coextrusion and two-way stretching of the inner surface layer, the core layer and the outer surface, wherein the inner surface layer comprises the following components in percentage by weight: 97.5-98.5% of polypropylene and 1.5-2.5% of adhesive; the core layer comprises the following components in percentage by weight: 98.0-98.4% of polypropylene, 1.0-1.2% of antistatic agent and 0.4-1.0% of slipping agent; the outer surface layer adopts a delustering material which comprises the following components in percentage by weight: 54-56% of polyethylene, 43.7-45.7% of high-density polyethylene and 0.3% of antioxidant. The matte BOPP film and the preparation method have the advantages that the selection and matching of the materials are reasonable, the selected polypropylene material is good in processing performance and high in mechanical strength; the prepared BOPP film is large in elastic modulus and low in heat shrinkage rate; the performance indexes such as haze and glossiness of the outer surface layer are excellent.

The invention relates to an extinction material for a biaxially oriented polypropylene (BOPP) film and a preparation method for the extinction material. The extinction material is characterized by comprising the following raw materials in part by weight: 30 to 60 parts of polypropylene (PP) resin, 30 to 60 parts of high density polyethylene, 2 to 15 parts of inorganic extinction powder, 2 to 10 parts of polybutylene terephathalate (PBT), 1 to 3 parts of dispersing agent and 0.1 to 1.0 part of antioxidant, wherein the total parts of the components are 100. By the extinction material for the BOPP film, a uniform extinction layer can be provided, high haze and high-temperature resistance are achieved, an extinction layer can be thinned for a BOPP film manufacturer, and the production speed and production efficiency of the extinction film are improved.

The invention discloses a transparent toughened light-diffusion polymethylmethacrylate material and a preparation method for the same. Components of the transparent toughened light-diffusion polymethylmethacrylate material comprise, in weight percentage, 65-85% of PMMA (polymethylmethacrylate) resin, 10-34% of toughening agent, 0.02-2% of light diffusing agent, 0.1-1% of antioxidant and 0.5-3% of lubricant. The transparent toughened light-diffusion polymethylmethacrylate material is high in toughness, transparency and haze, and is capable of meeting comprehensive requirements of optical parts on toughness, transparency and haze, and application range of PMMA is widened.

An anti-glare material comprises irregularity shape formed over at least one side. The side comprising the irregularity shape has slope angles satisfying the distribution conditions according to the formulae (1) and (2):

A≦0.2  (1) and

0.8≦B≦2.5  (2)

• • wherein
  • A: proportion of slope angles at or greater than 1.6° in relation to the total, B: (proportion of slope angles at or greater than 0.4° and smaller than 1.6° in relation to the total)/(proportion of slope angles less than 0.4° in relation to the total).

A Composition comprises a thermally crosslinked reaction product of a polyester and a carboxy-reactive material. Methods for the manufacture of the composition and articles derived from the composition are also disclosed.

The invention provides a composition applied to an atomization film, the atomization film and LED lighting equipment using the atomization film, which aim to solve the problems that light emitted from the LED lighting equipment is not soft and uniform enough, the visual effect is poor and the LED lighting equipment is difficult to resist dizziness and eliminate light spots in the prior art. The composition applied to the atomization film of the invention comprises the following components in part by weight: 5.5 to 22 parts of adhesive, 1 to 14 parts of organic particles, 1 to 14 parts of inorganic particles and 6 to 24 parts of solvent. The atomization film prepared by the invention can overcome the optical defect caused by mutual interference of LED point light sources, improve the visual effect of the LED lighting equipment, and enable the LED light equipment to provide multi-angle illumination, simultaneously reduce the light loss.

The invention provides a low temperature resistant halogen-free flame-retardant light scattering polypropylene composition and a preparation method thereof. The composition comprises the following components: 72-92.7% of PP resin, 2-5% of flexibilizer, 3-5% of biphasic solvent, 1-10% of halogen-free fire retardant, 1-5% of fireproof liquid oil, 0.1-2% of light scattering agent, 0.1-0.5% of light stabilizing agent, and 0.1-0.5% of anti-oxidant. The composition is prepared by the following steps: baking the PP resin at 70-90 DEG C with an air blast baking oven for 10-14 hours, and controlling the water content below 0.02%; stirring the baked PP resin, the flexibilizer and the biphasic solvent and the liquid fireproof oil according to a proportion in a feed mixer for 3-5 minutes; adding the light scattering agent, the light stabilizing agent and the anti-oxidant, and stirring for 2-4 minutes; adding the halogen-free fire retardant, stirring for 2-4 minutes, and for uniformly mixing the components together; adding the fully mixed materials into a double screw extruder for carrying out extrusion granulation. The low temperature resistant halogen-free flame-retardant light scattering polypropylene material provided by the invention has the advantages of high light transmittance, high haze, good flame retardation performance and impact resistance.

The invention relates to a polymer-dispersed liquid crystal composition and a polymer-dispersed liquid crystal display device manufactured by using the polymer-dispersed liquid crystal composition. The polymer-dispersed liquid crystal composition comprises a nematic phase liquid crystal material, an acrylic acid oligomer, a diluting monomer, an initiator, a spacer and the like. The invention provides a highly-crosslinked oligomer which solves the problem of a narrow view angle of an existing dimming membrane and is high in polymer selection curing speed and high in crosslinking density; the highly-crosslinked oligomer is prepared from a diluting monomer which is high in hardness, high in diluting capacity and not liable to yellow; and furthermore, selected liquid crystals no and an oligomer and diluting monomer mixture np meet a condition that np is greater than no. By optimization of selection of the liquid crystal material and the acrylic acid oligomer and optimization of a preparation method, the display device has the characteristics and properties of ultra-wide view angle, driving voltage lower than safety voltage, low haze, high transmittance and the like; and due to the properties, the application range and the application place of the display device are greatly expanded.

The invention relates to the field of a lens and specifically relates to a blue-ray-proof lens and a resin raw material thereof. A substrate polymer and a blue-ray-proof additive are contained in the lens; a nanometer rare earth oxide subjected to surface modification treatment is served as the blue-ray-proof additive; 3-methacryloxy trimethoxy silane and polymethyl methacrylate are contained in a modifying material used for the surface modification treatment. According to the invention, the nanometer rare earth oxide subjected to surface-cladding treatment is added into the substrate polymer, so that the lens has a better converting absorbing function for the 400-470nm high-energy blue ray; the high transparency and low haze of the lens can be guaranteed; the lens can meet the manufacturing requirements of the myopic lens, presbyopic glasses and sun glasses; the lens has wide adaptability.

The invention relates to a high-haze low-gloss anti-glare film and a preparation method thereof, in particular to specific anti-dazzle liquid for constructing the high-haze low-gloss anti-glare film and a wet spraying film forming mode thereof. According to the high-haze low-gloss anti-glare film and the preparation method thereof provided by the scheme, first, the specific anti-dazzle liquid which is added with high-refraction index inorganic nano-particles is prepared; then, the anti-dazzle liquid is sprayed on the surface of glass by a wet method; next, the glass is baked for a certain timeat a certain temperature; finally, a layer of the anti-glare film is constructed on the surface of the glass. The anti-glare film is a nano-particle-doped rough surface with an uneven surface; the anti-glare film is endowed with the performance of high haze and low gloss through the structure and morphology.

The invention relates to an optical diffusion barrier with high haze and brightness and a liquid crystal display backlight source using the optical diffusion barrier. A diffusion particle consists of particles with two particle diameters, the large-diameter particles are mutually and tightly in contact and distributed on the surface of a base material, the small-diameter particles are filled in gaps among the large-diameter particles, and the diffusion particles comprise spherical particles with the following particle diameters in percentage by weight: 82-92% of spherical particles with the particle diameter of 15-30 microns, and 8-18% of spherical particles with the particle diameter of 0.5-6 microns; and the geometric diameter proportion of the large-diameter particles to the small-diameter particles is within 5/1-30/1, and the thickness of a diffusion coating is 5/10-6/10 of the maximum diameter of the diffusion particles. The optical diffusion barrier disclosed by the invention has higher haze and light condensation capability by controlling the particle diameters and the proportion of the two kinds of diffusion particles and controlling the thickness of the diffusion coating; in addition, the liquid crystal display backlight source manufactured by the optical diffusion barrier, disclosed by the invention, has very higher haze and brightness.

The invention relates to a photodiffusion film with a blue light shielding function. The photodiffusion film is composed of a base material layer, a photodiffusion layer and a blue light shielding layer, wherein the two surfaces of the base material layer are provided with the photodiffusion layer and the blue light shielding layer respectively. According to the photodiffusion layer, organic silicon resin spherical micro-powder is evenly dispersed in base materials, the thickness of the organic silicon resin spherical micro-powder is 5% - 20% of the thickness of the whole film, and the weight of the organic silicon resin spherical micro-powder is 0.5% - 2% of the total weight of the photodiffusion layer. According to the blue light shielding layer, blue light shielding particles are evenly dispersed in the base materials, the thickness of the blue light shielding particles is 5% - 20% of the thickness of the whole film, and the weight of the blue light shielding particles is 0.5% - 2% of the total weight of the blue light shielding layer. The photodiffusion film has the advantages of being high in haze, moderate in light transmittance, and good in stability of haze and light transmittance and has a blue light shielding function. Solutions are not used during photodiffusion film manufacturing, and therefore environmental friendliness is realized. Meanwhile, manufacturing technology is simple, price is low, application prospects are good, and market value is high.

Described herein are reverse-mode polymer dispersed liquid crystal (PDLC) compositions with a plurality of domains. In addition, selectively dimmable reverse-mode PDLC elements and devices using the aforementioned compositions are also described, which are transparent when no voltage is applied and opaque when a voltage is applied.

The invention relates to a radiation refrigeration film. The radiation refrigeration film comprises a matrix layer and a filler distributed in the matrix layer, the refractive index of the material ofthe matrix layer is n, n is 1.3 to 1.7, the refractive index of the filler is m, the difference between n and m is x, an absolute value of x is greater than or equal to 0.05%, the emissivity of the radiation refrigeration film in an atmospheric window of 7-14 microns is greater than or equal to 80%, the heat reflectivity of the radiation refrigeration film in a wave band of 300-2500nm is greaterthan or equal to 10%, and the glossiness of the radiation refrigeration film is less than or equal to 20GU. Through selection of the material and the filler of the matrix layer and adjustment of the relationship of the refractive index, the radiation refrigeration effect of the radiation refrigeration film is excellent, and the glossiness is low. The invention further provides a radiation refrigeration composite film and a radiation refrigeration product, light pollution in the using process can be effectively reduced, and the excellent radiation refrigeration effect is guaranteed.