811results about How to "Improve plasticizing effect" patented technology

The invention discloses a water-resistant polyvinyl alcohol (PVA) film composition which comprises the following components in parts by weight: 100 parts of polyvinyl alcohol resin, 10-90 parts (preferably 20-50 parts) of compound plasticizing agent and 1-5 parts of processing agent, wherein the compound plasticizing agent is prepared from small molecular and high molecular plasticizing agents through compounding according to a certain proportion. The invention further discloses a preparation method of the composition. The film prepared by the method has good mechanical property, high transparency and high barrier property; the defects that PVA is easily degraded and smelled during a fusion process and PVA cannot be prepared by fusion are overcome; and the film is formed by a plurality ofmanners such as blow molding, curtain coasting, rolling and the like.

A ceramic tile with high content is flyash is prepared from flyash (60-700 wt.%), superfine kaolinite (25-40) prepared by the nano intercalation technique, and feldspar (0-10) through pretreating rawmaterials, compounding, pulping, baking, grinding, adding water and granulating, ageing, die pressing, baking, sintering and cooling. Its advantages are low cost, low hydroscopicity (less than 0.5%),and high modulus of rupture (more than 35 MPa).

The invention relates to a methyl tri(2-chloroethoxy) silane compound which is used as a silicon-halogen synergistic flame-retardant plasticizer and a preparation method thereof. The methyl tri(2-chloroethoxy) silane compound has the following structural formula: CH3Si(OCH2CH2Cl)3. The preparation method of the methyl tri(2-chloroethoxy) silane compound comprises the following steps: dropwise adding and stirring chloroethanol at a certain molar ratio to methyl trichlorosilane, carrying out a reaction on the chloroethanol and the methyl trichlorosilane for a certain time at a certain temperature, and purifying after finishing hydrogen chloride release and reaction to obtain methyl tri(2-chloroethoxy) silane. The methyl tri(2-chloroethoxy) silane can be used as the good flame-retardant plasticizer, and the process for producing the methyl tri(2-chloroethoxy) silane is simple, has low equipment investment and cost and is easy to realize industrial production.

Disclosed is a method for preparing calcium carbonate particle and its application, which includes the following steps: firstly burning, digestion and carbonization limestone, obtaining the mixture of nanometic calcium carbonate and micron calcium carbonate; do compound of coupling agent of titanic ester, coupling agent of aluminatic ester and coupling agent of boric esterto form a water soluble modifier which is added into calcium carbonate to package it; after packaging heat the sera and add soap having been saponificated into it with agitate, finally acquiring the calcium carbonate particle. The calcium carbonate obtained is filled with PVC-typed material, without coacervation even the quantity is large, can decrease the cost of PVC-typed material as well as the use of some assistant with high price on the basis of assuring the performance of it, meanwhile, the procession and plasticizing performance of it can also be advanced.

The invention discloses a low-smoke halogen-free flame-retardant cable material, and belongs to the field of materials. The low-smoke halogen-free flame-retardant cable material solves the problem that an existing cable material is poor in mechanical property and electrical property. The low-smoke halogen-free flame-retardant cable material is composed of 50-60 parts of high density polyethylene, 20-30 parts of ethylene-ethyl acrylate copolymers, 20-30 parts of methyl vinyl silicone rubber resin, 1-3 parts of magnesium stearate, 2-5 parts of novolac epoxy resin, 15-25 parts of isopropyl phenyl diphenyl phosphate, 1-2 parts of dilauryl thiodipropionate, 10-20 parts of dimellitate, 1-2 parts of antioxidants 1010, 1-1.5 parts of antioxidants CA, 10-20 parts of maleic anhydride grafting ethylene-octylene copolymers, 5-10 parts of polysiloxane, 20-30 parts of nano magnesium hydroxide, 13-18 parts of nano clay, 3-7 parts of zinc oxide, 5-10 parts of polyethylene wax and 3-8 parts of calcium stearate. The low-smoke halogen-free flame-retardant cable material can be widely used as insulation and sheathing materials of various electric wires and cables.

A high-gloss anti-crack adhesive for multilayer plywood is provided. The multilayer plywood is mutually glued and laminated by a single layer material. The adhesive includes a urea-formaldehyde resin adhesive and additive and added additives therein, a melamine resin adhesive and added additives therein. The preparation methods of the urea-formaldehyde resin adhesive and the melamine resin adhesive are creatively improved by inventors. The free formaldehyde in the obtained adhesive is less than 0.1%. Operation is easy, equipment is easy to get, no pollution generates, implementation is easy and price is inexpensive. The high-gloss anti-crack adhesive can be used for the multi-layer plywood, has excellent pre-pressing property, can mold at room temperature in 30-40 min, and has bonding strength >= 1.0 MPa, formaldehyde emission <= 1.0 mg / L, which is below requirements of GB / T18580-2001 E1 level, and gloss >= 85 DEG. In the environment with sudden changes in temperature, the high-gloss anti-crack adhesive has the advantages of preventing wear-resistant material cracking and bubbling as a result of thermal expansion and cool contraction.

The invention discloses a combined impeller abrasive disk type extrusion plasticizing method and a combined impeller abrasive disk type extrusion plasticizing device. A fixed abrasive disk and a rotating abrasive disk are arranged in a charging barrel; the fixed abrasive disk is arranged on the charging barrel; and the rotating abrasive disk is arranged on a power shaft. The invention is characterized in that: the fixed abrasive disk and the rotating abrasive disk are designed to be impeller type abrasive disks are formed by making a plurality of material through grooves for allowing materials to pass through and mixing the materials on whole abrasive disks along a radial direction; impeller blades form abrasive surfaces, and channels are formed by the material through grooves between theblades of the impeller abrasive disks; a plurality of like fixed impeller abrasive disks and rotating impeller abrasive disks are overlapped alternately; the materials are forcefully pressed in from the front part of the inside of the charging barrel; then under the rotation of the rotating impeller abrasive disks relative to the fixed impeller abrasive disks, the materials pass through abrasive disk gap and blade material through grooves so as to be gradually mixed, crushed, ground, softened, subjected to heat exchange and plasticized in the constantly varying material through channels and the abrasive disk gaps; and finally, the materials are discharged from a discharge hole on the rear part of the inside of the charging barrel.