Polyolefin rotomolding composition, its preparation method and application

A composition and polyolefin technology, applied in the field of polyolefin compositions, can solve problems such as growing moss, water pollution, etc., and achieve the effects of improving smoothness, enhancing dispersion, and good sanitation effects

Active Publication Date: 2021-02-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to effectively solve the water pollution problem existing in the existing polyethylene water storage tanks, the object of the present invention is to provide a polyolefin rotomolding composition, which can effectively prevent suspended solids and impurities from growing into moss on the wall of the water body, and Mildew, the present invention also provides its preparation method and application

Method used

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  • Polyolefin rotomolding composition, its preparation method and application
  • Polyolefin rotomolding composition, its preparation method and application
  • Polyolefin rotomolding composition, its preparation method and application

Examples

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Embodiment 1

[0038] (1) Mix rutile-type titanium dioxide and anatase-type titanium dioxide, add activated alumina, and then add 1 part of silane coupling agent KH-570, put it in a mixer, mix in a high-speed mixer, and mix at a temperature of 60°C. The speed is 1200 rpm, mixed for 10 minutes, and the material is discharged for later use;

[0039] (2) Mix linear low-density polyethylene, polymethylsiloxane, and the components obtained in step (1), the rotating speed is 1200 rpm, and the mixing time is 10 minutes; Granules, the temperature is 180°C, the screw speed is 120 rpm, the feeding material is 60 rpm, the particle length is 1.5mm, and it is ground into 25 mesh powder after drying;

[0040] (3) Grinding LLDPE 1 into 35 mesh powder;

[0041] (4) Add the powder of step (2) and step (3) into the test mold at a ratio of 2:3 (wt%) to form a 100-liter hollow box with a thickness of 6 cm and a rotational molding temperature of 230°C , The rotational molding time is 30 minutes.

[0042] The ...

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Abstract

The present invention relates to a polyolefin composition, particularly to a polyolefin rotational molding composition, a preparation method and applications thereof, wherein the polyolefin rotationalmolding composition comprises, by weight, 70-90 parts of linear low-density polyethylene, 2.0-4.0 parts of rutile type titanium dioxide, 2.0-12.0 parts of anatase type titanium dioxide, 4.0-10.0 parts of active alumina, 1.0 part of a silane coupling agent, and 1.0-5.0 parts of polymethylsiloxane, wherein the linear low-density polyethylene has a density of 0.936-0.939 g / cm<3> and a melt mass flowrate of 6-12 g / 10 min. According to the present invention, with the polyolefin rotational molding composition, the problem of water pollution of the polyethylene water storage tank is solved, and thecondition that suspended matters and impurities in a water body are attached to the wall of the device to grow into moss and cause mildew can be effectively prevented. The invention further providesapplications of the polyolefin rotational molding composition, wherein the inner surface of the rotational molding product can be coated with the polyolefin rotational molding composition so as to prevent the moss in the water from the attached growth, such that the method is simple, and the effect is obvious.

Description

technical field [0001] The invention relates to a polyolefin composition, in particular to a polyolefin rotational molding composition, its preparation method and application. Background technique [0002] Water is the source of life and an important part of the human body. The quality of drinking water has been paid more and more attention. Today's industrial pollution is becoming more and more serious, and water pollution has brought great harm to people. It is reported that 80% of human diseases are caused by drinking water. Drinking polluted water for a long time can easily cause various diseases. The sanitation of drinking water is closely related to everyone's health. With the continuous improvement of people's living standards, people have higher and higher requirements for the sanitation quality of drinking water. The drinking water sanitation of the people has attracted much attention, and household water has developed from traditional cement pools to iron produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L83/04C08K13/02C08K3/22
CPCC08K2003/2227C08K2003/2241C08K2201/003C08K2201/006C08K2201/014C08L23/0815C08L83/04C08K13/02C08K3/22Y02A40/22
Inventor 张广明刘少成张超王秀丽裴小静
Owner CHINA PETROLEUM & CHEM CORP
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