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Preparation method of polyethylene special material for vehicle decorative non-woven fabric back glue

A technology of polyethylene and cloth adhesive, applied in the field of polymer synthesis, to achieve the effect of easy operation, narrow molecular weight distribution and simple method

Inactive Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are very few domestic and foreign enterprises producing polyethylene special materials for car decoration non-woven fabrics, and no reports have been found so far after inquiries from relevant authoritative novelty search agencies

Method used

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  • Preparation method of polyethylene special material for vehicle decorative non-woven fabric back glue
  • Preparation method of polyethylene special material for vehicle decorative non-woven fabric back glue
  • Preparation method of polyethylene special material for vehicle decorative non-woven fabric back glue

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Effect test

Embodiment 1

[0022] (1) Compress ethylene, the first initiator, the second initiator and the adjustment agent, and after compression, be divided into two main and side flow feed gases whose pressure is 230-250Mpa; the main flow feed gas includes ethylene, First initiator and adjustment agent, the content of the tert-butyl peroxyneodecanoate in the described first initiator is 1ppm, and the content of tert-butyl peroxide 2-ethylhexanoate is 4ppm, and described adjustment agent is Propionaldehyde, the content of propionaldehyde is 225ppm; Described side stream feed gas comprises ethene and second initiator, and described second initiator is compressed air through filtering and drying, and its content is 16ppm;

[0023] (2) The main feed gas enters the first tubular reactor, and is first gradually heated to 175±10°C with a steam jacket, and then polymerized in the reaction zone. The polymerization temperature is 310-330°C, and the pressure is 240-250Mpa. The reaction time is 7 to 8 seconds; a...

Embodiment 2

[0026] Concrete steps are with embodiment 1.

[0027] Among them: the main and side feed gas pressures are 230-245Mpa, the first initiator in the main feed gas, the content of tert-butyl peroxyneodecanoate is 1.1ppm, and the content of tert-butyl peroxide 2-ethylhexanoate The content of butyl fat is 4.4ppm, the initiator compressed air content in the side stream feed gas is 17ppm, the molecular weight regulator propionaldehyde content in the mainstream feed gas is 225ppm, and the reaction temperature of the first tubular reactor is controlled to be 310~ 320°C, the reaction temperature of the second tubular reactor is controlled at 310-320°C.

Embodiment 3

[0029] Concrete steps are with embodiment 1.

[0030] Among them: the main and side feed gas pressures are 230-240Mpa, the first initiator in the main feed gas, the content of tert-butyl peroxyneodecanoate is 0.95ppm, and the content of tert-butyl peroxyneodecanoate is 0.95ppm, The content of butyl fat is 3.8ppm, and the second initiator (compressed air) content in the side stream feed gas is 16ppm, and the content of regulator propionaldehyde in the mainstream feed gas is 225ppm, and the reaction temperature of the first tubular reactor The temperature is controlled at 300-310°C, and the reaction temperature of the second tubular reactor is controlled at 300-310°C.

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Abstract

The invention belongs to the technical field of polymer synthesis and specifically relates to a preparation method of a polyethylene special material for vehicle decorative non-woven fabric back glue. On a tubular E-method high pressure polymerization process device, appropriate initiator and molecular weight regulator are selected, and ethylene feed mainstream and sidestream are added in appropriate proportion, and appropriate polymerization pressure and polymerization temperature are selected. Then, vehicle decorative non-woven fabric back glue special polyethylene with high melt index (22-32g / 10min under conditions of 190 DEG C and 2.16 kg) and medium-low density (0.920-0.934g / cm<3>) is developed and prepared. The method is simple and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis, in particular, to a high-pressure tubular preparation method of high-melting index polyethylene resin used in the field of automotive interior decoration, Background technique [0002] Since the 1980s, the global automobile industry has developed rapidly, and my country has also listed the automobile industry as a pillar industry. After entering the 21st century, with foreign automakers entering my country one after another, the production of cars in our country has been greatly developed. Like housing and education, automobiles, as an important factor to stimulate domestic demand and support the growth of gross national product (GDP), have attracted more and more attention. The future car design will more embody the distinctive features of people-oriented. To meet the increasing needs of car drivers, the functional design of car interior decoration becomes more important. As people ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F2/01C08F2/34C08F2/38C08F4/38C08F4/00
Inventor 吴建东林培长周浩徐文俊
Owner CHINA PETROLEUM & CHEM CORP
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