Agricultural polyethylene resin composition

A technology of resin composition and polyethylene resin, applied in the field of polyethylene resin composition, can solve the problems of high drawdown of resin, difficult formation of film bubbles, easy accumulation on the wind ring, etc., and achieves high melt strength, rolling tight effect

Inactive Publication Date: 2005-01-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the shed film with a thickness of more than 80 μm is blown by this resin, there will still be proble

Method used

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  • Agricultural polyethylene resin composition

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Embodiment

[0014] Raw materials: LLDPE DFDA7042 powder produced by Jilin Petrochemical Company

[0015] LLDPE 103AA powder produced by Lanzhou Petrochemical Company

[0016] Produced by TA Lanzhou Auxiliary Factory

[0017] Antioxidant B561 Produced by Lanhua Organic Factory

[0018] Calcium Stearate Produced by Chongqing Changjiang Chemical Factory

[0019] Preparation of the resin composition:

[0020] Using the Φ67 twin-screw extruder produced by German Lestreiz Company as the reactor, LLDPE resin is added from the feeding port 1, B561 and calcium stearate enter the extruder from the side feeding port 2, and TA is added from the liquid dripping port 3 . Reactive devolatilization can be achieved at the exhaust port 4 of the extruder. The reaction materials are finally extruded and granulated by the head 5 to obtain the LLDPE resin composition. The specific raw material formula and preparation process conditions are shown in Table 1 and Table 2.

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Abstract

An agricultural polyethylene resin composition mainly comprises linear low density polyethylene and di-tert-butyl peroxide, wherein the dosage of di-tert-butyl peroxide is 0.3-0.6 (percentage by weight, based on linear low density polyethylene). The resin composition can be used for blowing agricultural covering films.

Description

technical field [0001] The invention relates to a polyethylene resin composition, in particular to an agricultural greenhouse film resin composition with linear low-density polyethylene as the base material. Background technique [0002] my country is a big agricultural country. With the continuous development of agricultural technology, the application of agricultural greenhouses and greenhouses has been promoted. At present, LDPE film is mostly used as the greenhouse covering material in China, and LLDPE film is rarely used. The reason is that LLDPE itself has low melt strength, high stretchability, and poor stability of the film bubble in the blown film forming process. Therefore, the control of the parison There are problems, but at the same time, LLDPE has better physical properties than LDPE, and the production cost is also more competitive. It can produce films with better performance and lower prices. Some manufacturers want to reduce costs and improve the quality of...

Claims

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Application Information

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IPC IPC(8): C08K5/14C08L23/06
Inventor 徐典宏牛承祥张宇赵振兴李社青
Owner PETROCHINA CO LTD
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