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41results about How to "Play the role of chain extension" patented technology

Oil-displacing agent composition used for improving recovery ratio of high-temperature reservoir and preparation method of composition

The invention relates to an oil-displacing agent composition for improving a recovery ratio of a high-temperature reservoir and a preparation method of the composition, mainly solving the problems that a polymer-containing oil-displacing agent in the prior art is poor in temperature resistance, salt resistance and thermal stability resistance, and low in displacement efficiency. In order to solve the problems better, a following technical scheme is adopted as follows: the oil-displacing agent composition comprises the following components in percentage by weight: 0.005%-8.0% of high-temperature-resistant and oil-displacing acrylamide polymers, 0.005%-5.0% of a fatty alcohol polyoxyethylene ether carboxylate surfactant and 87.0%-99.99% of injected water. The preparation method of the oil-displacing agent composition comprises the following steps: regulating a pH value; ventilating a nitrogen gas and removing an oxygen gas; carrying out hydrolysis reaction; drying, crushing and sieving to obtain acrylamide polymers; stirring the acrylamide polymers, the fatty alcohol polyoxyethylene ether carboxylate and the injected water for 0.5 hour-5 hours at 5 DEG C-45 DEG C, and uniformly mixing to obtain the oil-displacing agent composition. And therefore, the oil-displacing agent composition can be used for tertiary oil recovery production of the high-temperature reservoir.
Owner:CHINA PETROLEUM & CHEM CORP +1

High-modulus low-shrinkage creep-resistant polyester industrial yarn and preparation method thereof

The invention relates to a high-modulus low-shrinkage creep-resistant polyester industrial yarn and a preparation method thereof. The preparation method comprises the preparation of a high-viscosity creep-resistant polyester chip and the preparation of the high-modulus low-shrinkage creep-resistant polyester industrial yarn; polyester is subjected to solid phase polycondensation for viscosifying and then is blended and reacted with a fluorine-containing epoxy compound to obtain the high-viscosity creep-resistant polyester chip; then the high-viscosity creep-resistant polyester chip is subjected to metering, extruding, cooling, oiling, stretching, heat setting and winding to obtain the high-modulus low-shrinkage creep-resistant polyester industrial yarn. The high-modulus low-shrinkage creep-resistant polyester industrial yarn has certain creep resistance, hydrolysis resistance and performance stability, can be used in a high-temperature high-humidity environment for a long time, and has great prospect in the fields of plastic packaging, waterproof fabrics, ropes, mooring ropes, marine fibers and the like.
Owner:JIANGSU HENGLI CHEM FIBER

Biodegradable PBAT alloy with high starch content and preparation method of biodegradable PBAT alloy

The invention provides a biodegradable PBAT alloy with high starch content and a preparation method of the biodegradable PBAT alloy. The PBAT alloy is prepared from the following components: PBAT resin, modified starch, glycerol, water, an antioxidant and a lubricant, wherein the modified starch is multi-epoxy-group modified starch containing epoxy groups. Epoxy groups in the modified starch can react with PBAT, so that the interfacial compatibility of the starch and the PBAT is improved, the proportion of the starch is increased, a chain extension effect can be achieved, and the problem thatthe mechanical property of the PBAT is reduced due to degradation in the processing process is solved.
Owner:WANHUA CHEM (SICHUAN) CO LTD +2

Creep-resistant polyester high-grade highway protective fence framework material industrial yarn and its preparation method

The invention relates to a creep-resistant polyester high-grade highway protective fence framework material industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a creep-resistant polyester high-grade highway protective fence framework material industrial yarn. According to the preparation method, polyester is tackified through solid phase polycondensation and then the tackified polyester is mixed with a fluorine-containing epoxy compound to react so as to obtain the creep-resistant polyester hyperviscous slice; and the creep-resistant polyester high-grade highway protective fence framework material industrial yarn is prepared from the obtained creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The creep-resistant polyester high-grade highway protective fence framework material industrial yarn has a certain creep resistance, hydrolysis resistance and performance stability, can be used in a hot and humid environment for a long time, and is applied to a polyester industrial-yarn reinforced plastic protective fence.
Owner:JIANGSU HENGLI CHEM FIBER

Extrusion impurity-removal method for modified reworked plastic

An extrusion impurity-removal method for modified reworked plastic includes the following steps that (1) waste plastic is collected and selected, large impurities are selected and removed, the plastic is classified according to colors, and the waste plastic of the same type is crushed into 3-5 cm particles; (2) the crushed waste plastic particles are delivered into a cleaning tank, clear water is added into the cleaning tank, the waste plastic particles are cleaned and then fished out, and water in the waste plastic particles is drained; (3) the plastic particles with water drained are delivered into drying equipment to be dried with dehumidified dry air, and the drying effect is improved; (4) the dried plastic particles are delivered into a pulverizer to be processed, pulverized materials are delivered into a powder mixing machine, an assistant is added, and even mixing is conducted; (5) the plastic particles mixed with the assistant are delivered into an extruder and filtered through a double-stage filtering die head, high-quality melt is obtained, and the filtered melt is further evenly mixed so as to be consistent in viscosity; and (6) the melt which is further evenly mixed is subjected to pelleting through an extrusion pelletizer, and the high-purity reworked plastic is obtained.
Owner:安徽省华晨塑业科技有限公司

Creep-resistant polyester ultrahigh-strength industrial yarn and its preparation method

The invention relates to a creep-resistant polyester ultrahigh-strength industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a creep-resistant polyester ultrahigh-strength industrial yarn. According to the preparation method, polyester is tackified through solid phase polycondensation and then the tackified polyester is mixed with a fluorine-containing epoxy compound to react so as to obtain the creep-resistant polyester hyperviscous slice; and the creep-resistant polyester ultrahigh-strength industrial yarn is prepared from the obtained creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The creep-resistant polyester ultrahigh-strength industrial yarn has a certain creep resistance, hydrolysis resistance and performance stability, can be used in a hot and humid environment for a long time, and has a huge prospect in the fields of plastic packing, waterproof fabric, ropes, cables, marine fiber and the like.
Owner:JIANGSU HENGLI CHEM FIBER

Polyurethane pouring sealant as well as preparation method and application thereof

The invention relates to a polyurethane pouring sealant and a preparation method and application thereof.The polyurethane pouring sealant is composed of a component A and a component B. The mass ratio of the component A to the component B is 40-60: 100, and the component A is prepared from, by weight, 10-40 parts of hydroxyl-terminated polybutadiene A, 5-20 parts of polymer polyol, 5-30 parts of plasticizer and 35-75 parts of isocyanate; the component B comprises the following raw materials in parts by weight: 20-60 parts of hydroxyl-terminated polybutadiene B, 5-30 parts of polymer polyol, 5-30 parts of a plasticizer, 5-25 parts of a chain extender, 5-40 parts of a flame retardant, 0.5-5 parts of carbon black, 0.01-1 part of a catalyst and 0.1-1 part of a defoaming agent; the hydroxyl-terminated polybutadiene A is a special hydroxyl-terminated polybutadiene with low functionality; the hydroxyl-terminated polybutadiene B is polyfunctional special hydroxyl-terminated polybutadiene and/or epoxidized special hydroxyl-terminated polybutadiene. The pouring sealant disclosed by the invention has the characteristics of high mechanical property, good adhesive property, excellent insulation and flame retardance and low-temperature resistance, and can be used for pouring and sealing electronic components such as cables.
Owner:LIMING RES INST OF CHEM IND

Oil-displacing agent composition for high-temperature reservoir enhanced recovery and preparation method thereof

The invention relates to an oil-displacing agent composition for improving a recovery ratio of a high-temperature reservoir and a preparation method of the composition, mainly solving the problems that a polymer-containing oil-displacing agent in the prior art is poor in temperature resistance, salt resistance and thermal stability resistance, and low in displacement efficiency. In order to solve the problems better, a following technical scheme is adopted as follows: the oil-displacing agent composition comprises the following components in percentage by weight: 0.005%-8.0% of high-temperature-resistant and oil-displacing acrylamide polymers, 0.005%-5.0% of a fatty alcohol polyoxyethylene ether carboxylate surfactant and 87.0%-99.99% of injected water. The preparation method of the oil-displacing agent composition comprises the following steps: regulating a pH value; ventilating a nitrogen gas and removing an oxygen gas; carrying out hydrolysis reaction; drying, crushing and sieving to obtain acrylamide polymers; stirring the acrylamide polymers, the fatty alcohol polyoxyethylene ether carboxylate and the injected water for 0.5 hour-5 hours at 5 DEG C-45 DEG C, and uniformly mixing to obtain the oil-displacing agent composition. And therefore, the oil-displacing agent composition can be used for tertiary oil recovery production of the high-temperature reservoir.
Owner:CHINA PETROLEUM & CHEM CORP +1

A kind of high-strength and low-shrinkage industrial yarn of creep-resistant polyester and its preparation method

The invention relates to creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof. The method comprises the preparation of creep-resistant polyester high-viscosity slice and the preparation of the creep-resistant polyester high-strength low-shrinkage industrial yarn. According to the invention, polyester is subjected to tackifying through solid-phase polycondensation; the polyester is subjected to a blending reaction with a fluorine-containing epoxy compound, such that the creep-resistant polyester high-viscosity slice is obtained; the creep-resistant polyester high-viscosity slice is subjected to measuring, extruding, cooling, oiling, stretching, heat setting, and winding, such that the creep-resistant polyester high-strength low-shrinkage industrial yarn is prepared. The creep-resistant polyester high-strength low-shrinkage industrial yarn has certain creep resistance, hydrolysis resistance, and performance stability. The yarn can be applied in high-temperature high-humidity environments for a long time. The yarn has great application prospect in the fields such as plastic packaging, waterproof fabrics, ropes, cables, marine fiber, and the like.
Owner:JIANGSU HENGLI CHEM FIBER
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