The present invention relates to a novel polyaryletherketone (PAEK) polymer composition with a significantly increased crystallization rate, and preferably, to a polyetherketoneketone (PEKK) polymer composition. According to the present invention, there is provided a polymer composition including a liquid crystal polymer (LCP), an inorganic nucleating agent, a reinforcing agent, and a filler in polyaryletherketone (PAEK). Therefore, the present invention provides an effect of improving a crystallization rate of the polymer composition and improving molding processability, thereby improving productivity, shape, dimensional stability, or the like of products.

A preparation method of a fluoropolymer processing aid. The preparation method comprises the following steps: simultaneously adding ε-caprolactone and a fluoropolymer elastomer into a reactor, and heating to completely dissolve the fluoropolymer elastomer; and then cooling, adding polyol, mixing thoroughly, and adding an organotin catalyst to carry out a polymerization reaction; and after the reaction is finished, carrying out cooling, pulverizing or spray granulation so as to obtain the fluoropolymer processing aid. The processing aid prepared by using the method can reduce the extrusion pressure of a polymer during extrusion, improve the processing efficiency, improve the phenomena of melt rupture and “sharkskin” during polymer extrusion, and effectively enhance the surface quality of a product. Compared with the prior art, the processing aid of the invention has the characteristics of uniform dispersed particle size during polymer processing, no coking at a die head during long-time polymer extrusion processing, etc.

The present invention relates to polypropylene particles and a method for preparing same, the polypropylene particles being formed from a polypropylene resin, and having a melting index (M.I.) of 1000 g/10 min or more when the particles are re-melted under a temperature condition of 150° C. to 250° C. and a condition of atmospheric pressure to a pressure of 15 MPa.

To provide a rubber composition excellent in elasticity and low loss property.

A rubber composition comprising 100 parts by weight of a chloroprene rubber and from 1.2 to 3.0 parts by weight of cellulose nanofibers, characterized in that a vulcanized sheet obtained by vulcanizing the rubber composition has a 100% tensile stress (M100) increased by 1.5 MPa or more per part by weight of the cellulose nanofibers added, where the increase of M100 is calculated by subtracting M100 of a vulcanized sheet containing no cellulose nanofibers from M100 of the vulcanized sheet containing the cellulose nanofibers, and dividing the difference by the amount of the cellulose nanofibers contained.

A machinable wax with plastic additive and method of manufacture is shown and described. The machinable wax with a plastic additive includes between twenty-five (25) percent and thirty-five (35) percent of the polyethylene (PE) Wax by volume. The machinable wax includes between thirty-five (35) percent and forty-five (45) percent of LD polyethylene by volume. The machinable wax also includes between ten (10) percent and twenty (20) percent of micro crystalline wax by volume and between seven (7) percent and twelve (12) percent of paraffin wax by volume. In some embodiments the machinable wax includes between three (3) percent and six (6) percent of acetic acid ethenyl ester by volume. In some instances, the machinable wax has less than or equal to one (1) percent of colorant by volume added.

A method for fabricating carbon nanoparticle polymer matrix composites includes the steps of: providing a nanoparticle mixture that includes carbon nanoparticles (CNPs), mixing the nanoparticle mixture and a plastic substrate into a homogenous (CNP)/polymer mixture having an interconnected network of carbon nanoparticles (CNPs); and irradiating the (CNP)/polymer mixture with electromagnetic radiation controlled to form a polymer composite and uniformly consolidate and/or interfacially bond the carbon nanoparticles (CNPs) into the polymer matrix.

The present invention relates to quantum dot-polymer composite particles and a method for preparing same, the composite particles comprising: quantum dots; and a (meth)acrylic polymer coating layer formed to surround the surface of the quantum dots, and to a technology for expanding the application of quantum dots which can ensure high stability and excellent luminous efficiency by including the polymer coating layer.

A method for rubber formulating and characterizing, the method comprising (i) providing a plurality of rubber samples including at least three rubber samples each contained within a container; (ii) introducing a compounding additive to at least one of the samples within the plurality of rubber samples to thereby form a plurality of rubber formulations each contained within a container; (iii) mixing at least one of the samples of the plurality of rubber formulations under high-shear conditions to thereby form a plurality of vulcanizable compositions; and (iv) analyzing at least one of the samples plurality of vulcanizable compositions to thereby characterize the compositions of the plurality, where at least one or the plurality of the rubber samples, the plurality of rubber formulations, the plurality of vulcanizable compositions are transferred to a subsequent step through an automated transfer.

A method for rubber formulating and characterizing, the method comprising (i) providing a plurality of rubber samples including at least three rubber samples each contained within a container; (ii) introducing a compounding additive to at least one of the samples within the plurality of rubber samples to thereby form a plurality of rubber formulations each contained within a container; (iii) mixing at least one of the samples of the plurality of rubber formulations under high-shear conditions to thereby form a plurality of vulcanizable compositions; and (iv) analyzing at least one of the samples plurality of vulcanizable compositions to thereby characterize the compositions of the plurality, where at least one or the plurality of the rubber samples, the plurality of rubber formulations, the plurality of vulcanizable compositions are transferred to a subsequent step through an automated transfer.

The use of at least one mono-substituted succinic anhydride is described before or during compounding of a polymer composition including at least one polymer as polymer component and at least one calcium carbonate-based material as filler. The use of the at least one mono-substituted succinic anhydride can reduce the polymer decomposition during processing and/or can decrease the melt flow rate of such a compounded polymer composition by at least 10%. The use can also increase the viscosity of such a compounded polymer composition by at least 10%, in comparison to the same polymer composition that has been treated the same way in the absence of any mono-substituted succinic anhydride, wherein the polymer composition does not include polylactic acid.