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High-impact polyvinyl chloride and preparation method thereof

A polyvinyl chloride, high-impact technology, applied in the field of plastic modification, can solve the problems of high cost of impact-resistant polyvinyl chloride and high manufacturing cost of impact-resistant modifiers, achieve a low temperature range, good toughness, suitable for The effect of large-scale industrial production

Active Publication Date: 2020-07-10
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacturing cost of these impact modifiers is relatively high, resulting in the high cost of using them to modify PVC to prepare impact polyvinyl chloride

Method used

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  • High-impact polyvinyl chloride and preparation method thereof
  • High-impact polyvinyl chloride and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a kind of high-impact polyvinyl chloride, by weight, its raw material composition includes:

[0025] PVC resin 100 parts

[0026] Core-shell spherical metallocene ethylene propylene rubber 5 parts

[0027] Chlorinated polyethylene 2 parts

[0028] 1 part dibutyltin dilaurate

[0029] 1 part stearic acid

[0030] Among them, the PVC resin is a PVC resin with a degree of polymerization of 1400; the number of the core-shell spherical metallocene ethylene-propylene rubber used is EPR-5.

[0031] The high-impact polyvinyl chloride is prepared by the following steps:

[0032] Put 5 parts of EPR-5, 100 parts of polyvinyl chloride resin, 2 parts of chlorinated polyethylene, 1 part of dibutyltin dilaurate, and 1 part of stearic acid into a double-roller mastication at 175 ° C and a speed of 70 rpm After mixing in the machine for 10 minutes, press and form on a flat vulcanizing machine to obtain high-impact polyvinyl chloride.

Embodiment 2

[0034] This embodiment provides a kind of high-impact polyvinyl chloride, by weight, its raw material composition includes:

[0035] PVC resin 100 parts

[0036] Core-shell spherical metallocene ethylene propylene rubber 10 parts

[0037] Chlorinated polyethylene 5 parts

[0038] Di-n-octyltin dilaurate 0.5 part

[0039] 2 parts stearic acid

[0040] Among them, the PVC resin is a PVC resin with a polymerization degree of 1600; the number of the core-shell spherical metallocene ethylene-propylene rubber used is EPR-4.

[0041] The high-impact polyvinyl chloride is prepared by the following steps:

[0042] Put 10 parts of EPR-4, 100 parts of polyvinyl chloride resin, 5 parts of chlorinated polyethylene, 0.5 parts of dibutyltin dilaurate, and 2 parts of stearic acid into a double-roller mastication at 175 ° C and a speed of 70 rpm After mixing in the machine for 10 minutes, press and form on a flat vulcanizing machine to obtain high-impact polyvinyl chloride.

Embodiment 3

[0044] This embodiment provides a kind of high-impact polyvinyl chloride, by weight, its raw material composition includes:

[0045] PVC resin 100 parts

[0046] Core-shell spherical metallocene ethylene propylene rubber 15 parts

[0047] Chlorinated polyethylene 7 parts

[0048] 3 parts tribasic lead sulfate

[0049] Barium stearate 2 parts

[0050] Paraffin 0.5 parts

[0051] Among them, the PVC resin is a PVC resin with a degree of polymerization of 1500; the number of the core-shell spherical metallocene ethylene-propylene rubber used is EPR-3.

[0052] The high-impact polyvinyl chloride is prepared by the following steps:

[0053] Put 15 parts of EPR-3, 100 parts of polyvinyl chloride resin, 7 parts of chlorinated polyethylene, 3 parts of tribasic lead sulfate, 2 parts of barium stearate, and 0.5 parts of paraffin into 175 ° C and 70 rpm After mixing for 10 minutes in a special double-roller mill, it was pressed and formed on a flat vulcanizer to obtain high-impact ...

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Abstract

The invention provides high-impact polyvinyl chloride and a preparation method thereof. The high-impact polyvinyl chloride comprises the following raw materials in parts by weight: 100 parts of PVC resin, 5-25 parts of core-shell spherical metallocene ethylene propylene rubber, 2-15 parts of a compatilizer, 0.5-8 parts of a stabilizer and 0.5-5 parts of a lubricant. The invention also provides a preparation method of the high-impact polyvinyl chloride. The core-shell spherical metallocene ethylene propylene rubber is used for replacing elastomers such as ethylene propylene rubber and can be directly used for producing high-impact polyvinyl chloride, high-energy-consumption treatment such as rubber cutting and rubber crushing is not needed, the production cost of the high-impact polyvinyl chloride is greatly reduced, and the method is suitable for large-scale industrial production. Besides, the polyethylene shell layer of the core-shell spherical metallocene ethylene propylene rubber has very low glass transition temperature, so that the high-impact polyvinyl chloride has better toughness and a lower use temperature range, and the requirements of industries such as automobiles, household appliances, electric wires and cables, buildings and the like are better met.

Description

technical field [0001] The invention belongs to the technical field of plastic modification, and in particular relates to a high-impact polyvinyl chloride and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is mainly used as a construction material and plastic pipes. PVC plastic profiles are widely used in indoor and outdoor doors, windows and decoration industries of buildings. They have excellent characteristics such as heat preservation, sealing, energy saving, sound insulation, and moderate cost. Since the product came out, it has developed rapidly. PVC pipe has the advantages of light weight, corrosion resistance, high strength, good weather resistance and flame retardancy. However, PVC itself also has some disadvantages, such as low-temperature brittleness, low impact strength, and poor crack resistance, which bring more problems and inconvenience to installation and use. Therefore, the impact performance of PVC must be improved. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/16C08L23/06
CPCC08L27/06C08L23/16C08L23/06
Inventor 赵增辉韦德帅付义宋磊高宇新王斯晗方宏王登飞任合刚闫义彬傅智盛范志强姜进宪杨国兴何书艳王玉如
Owner PETROCHINA CO LTD