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Radiation-resistance high-elastic resilience polyvinyl chloride composition and preparation method thereof

A technology of polyvinyl chloride and polyvinyl chloride resin, which is applied in the field of radiation-resistant and high-resilience polyvinyl chloride composition and its preparation field, can solve the problems of unfavorable production of industrialized products, complicated preparation process and the like, and achieves low cost and good quality. The effect of radiation resistance and high resilience

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mix 100 parts of phenyl silicone rubber, 60-85 parts of anti-radiation agent, 3-8 parts of heat-resistant additive, 30-55 parts of fumed white carbon black, and 3-7 parts of structure control agent at a temperature of 45±5°C After 40 to 80 minutes, heat the kneaded material at 200±5°C for 1 to 3 hours, then cool it down to room temperature, and then add 0.8 to 1.2 parts of organic peroxide by weight. Even mixing, the preparation process of this invention is slightly complicated, which may be unfavorable to the production of industrial products

Method used

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  • Radiation-resistance high-elastic resilience polyvinyl chloride composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] With 100 parts by weight of PVC powder (Hangzhou Electrochemical Group, DH-2500), 5 parts of calcium zinc heat stabilizer (Kai Misen company, product brand: 5515), 0.4 part of internal lubricant calcium stearate (Tianjin Yong Changsheng Chemical Co., Ltd., industrial grade), 0.1 part of external lubricant polyethylene wax (Beijing University of Chemical Technology Fine Chemical Factory, LPE-F), put it into a high-speed mixer, stir at a high speed until 65 ° C, at this time slowly pour plasticizer 120 parts of agent (DOP / IPPP weight ratio 60:60), so that PVC can completely absorb the plasticizer. Stir at high speed until the temperature reaches 105°C and discharge.

[0041] The material was stirred and cooled to room temperature (about 25° C.), and then mixed with 30 parts of powdered nitrile rubber P83 (French Ilio company, acrylonitrile content 33%, average particle size 0.6 mm) at room temperature and stirred evenly.

[0042] Mastication is carried out using a two-ro...

Embodiment 2

[0046] With the PVC powder (with embodiment 1) of 100 parts by weight, 5 parts of calcium-zinc thermal stabilizers (with embodiment 1), 0.4 part of interior lubricant calcium stearate (with embodiment 1), 0.1 part of external lubrication Add polyethylene wax (same as Example 1), put it into a high-speed mixer, and stir it at a high speed until 65°C, at this time, slowly pour 100 parts of plasticizer (the weight ratio of DOP / IPPP is 70:30), so that PVC can be completely absorbed plasticizer. Stir at high speed until the temperature reaches 105°C and discharge.

[0047] The material is placed to room temperature, and then mixed with 50 parts of powdered nitrile rubber P83 (same as Example 1) at room temperature.

[0048] Using twin-screws for ordinary PVC, put the mixed material containing pre-swelled PVC into the hopper, extrude, cool, and granulate with hot air to obtain a radiation-resistant high-resilience polyvinyl chloride composition. The extrusion temperature is 170~ 1...

Embodiment 3

[0052] With the PVC powder (with embodiment 1) of 100 parts by weight, 5 parts of calcium-zinc thermal stabilizers (with embodiment 1), 0.4 part of interior lubricant calcium stearate (with embodiment 1), 0.1 part of external lubrication Add polyethylene wax (same as Example 1), put it into a high-speed mixer, and stir it at a high speed until 65°C, at this time, slowly pour 100 parts of plasticizer (the weight ratio of DOP / IPPP is 30:70), so that PVC can be completely absorbed plasticizer. Stir at high speed until the temperature reaches 105°C and discharge.

[0053] The material is placed to room temperature, and then mixed with 50 parts of powdered nitrile rubber P83 (same as Example 1) at room temperature.

[0054] Mastication is carried out using a two-roll mill. Weigh the mixed material containing pre-swelled PVC and put it into the double-roller open mill, thin pass plasticization, the resin film is passed through the rollers, and then placed on the plate, and then pa...

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Abstract

The invention relates to a radiation-resistance high-elastic resilience polyvinyl chloride composition and a preparation method thereof, which relates to the technical field of plastic processing. The polyvinyl chloride composition comprises the following mixed component: polyvinyl chloride resin, plasticizer and nitrile-butadiene rubber powder. The plasticizer is mixture of dioctyl phthalate andtri-isopropylated phenyl phosphate ester at a weigh ratio of (70:30)-(30:70). The amount of the plasticizer is 80-130 weight parts provided that amount of polyvinyl chloride resin is 100 weight parts. The mass percentage of acrylonitrile in the nitrile-butadiene rubber powder is 31-35%, and the average particle size of the nitrile-butadiene rubber powder is 0.2-1 mm. The amount of the nitrile-butadiene rubber powder is 10-50 weight parts provided that amount of polyvinyl chloride resin is 100 weight parts. The preparation method comprises mixing the components containing polyvinyl chloride resin, plasticizer and nitrile-butadiene rubber powder, and melting.

Description

technical field [0001] The present invention relates to a polyvinyl chloride composition, more specifically, to a polyvinyl chloride composition with radiation resistance and high resilience and a preparation method thereof. Background technique [0002] Nuclear energy is a great discovery of mankind in the 20th century. It is the only energy that can achieve industrial applications and can replace fossil fuels on a large scale, and nuclear energy does not produce harmful substances in the process of being used. However, while using nuclear energy, it also produces a large amount of nuclear waste. These nuclear wastes are radioactive substances. When storing these nuclear wastes, well-sealed and radiation-resistant containers are required to prevent the nuclear wastes from leaking out and causing radiation to the outside world. Therefore, the role of the sealing ring is also very important. Generally, soft polyvinyl chloride (PVC) products are used for sealing rings, and so...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L9/02C08K5/12C08K5/523
Inventor 刘涛张师军张薇邵静波张丽英李魁李杰尹华邹浩张浩陈力张洪波徐萌杨庆泉
Owner CHINA PETROLEUM & CHEM CORP
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