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Dedicated modified materials for agricultural polyethylene film

A polyethylene and agricultural film technology, which is applied in the field of polyethylene resin modification, can solve problems such as rising prices, difficulties for farmers, and high polyethylene resin prices.

Inactive Publication Date: 2006-10-11
兰州定元塑料制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the impact of the international energy crisis in recent years, the price of crude oil has remained high, which has led to a continuous rise in the price of its downstream product polyethylene resin; while the price of plastic products, especially agricultural plastic products, has not risen much, so polyethylene plastic pipes, The price of the film market has risen accordingly, and it is difficult for the majority of farmers to accept

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Mix 98kg of polyethylene recycled material resin with 2kg of dicumyl peroxide, add it into the hopper of the reactive twin-screw unit, and heat it to make the molten material generate chain initiation in the barrel;

[0017] 2. Add 1.5kg of vinyl silane to the fourth section of the barrel of the unit;

[0018] 3. Add 0.15kg of free radical scavenger and 0.4kg of quencher to the sixth section of the barrel of the unit for reaction;

[0019] 4. After the material has completed the reaction, it passes through the splitter plate and the filter screen, and uses a 120-mesh steel screen to filter out impurities, extrudes through the die head, and is pulled into a strip;

[0020] 5. After the strips are introduced into the cooling water tank to cool, they are sent to the pelletizer to be cut into pellets.

Embodiment 2

[0022] 1. Mix 99kg of polyethylene recycled material resin with 1kg of dicumyl peroxide, add it into the hopper of the reactive twin-screw unit, and heat it to make the molten material generate chain initiation in the barrel;

[0023] 2. Add 1kg of vinyl silane to the fourth section of the barrel of the unit;

[0024] 3. Add 0.25kg of free radical scavenger and 0.2kg of quencher to the sixth section of the barrel of the unit for reaction;

[0025] 4. After the material has completed the reaction, it passes through the splitter plate and the filter screen, and uses a 120-mesh steel screen to filter out impurities, extrudes through the die head, and is pulled into a strip;

[0026] 5. After the strips are introduced into the cooling water tank to cool, they are sent to the pelletizer to be cut into pellets.

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Abstract

A special modified material for polyethylene film selecting polyethylene regenerative material as main raw material is prepared by the following charge ratio of raw materials and method: mixing the polyethylene regenerative resin and the dicumyl peroxide, then adding them into bucket of reactive twin-screw set, warming to make molten materials perform chain initiation in charging barrel; adding vinylsilane in the fourth barrel of the charging barrel of the set; adding free radical capture agent and quenching agent to react in the sixth barrel of the charging barrel of the set; after finishing the reaction, the materials going through the shunt board and the screen, squeezed by the die then stayed to stuff; inputting the stuff into dicing cutter to pellet after introduced into bosh to cool. The invention can reduce the cost of the raw materials for film production by 300-500 RMB / ton; can advance the reclamation of waste and old plastics, slow down the while contamination of various plastic products to environment and alleviate the market contradictory problem that the demand for polyvinyl resin exceeds the supply in recent years.

Description

technical field [0001] The invention relates to the technical field of polyethylene resin modification, in particular to a special modified material for polyethylene agricultural film. Background technique [0002] Currently widely used agricultural plastic blown film processing materials are mainly linear low-density polyethylene (LLDPE) and high-pressure low-density polyethylene (LDPE), high-density polyethylene (HDPE) two or three kinds of resin blended after Extrusion, blow molding processing. However, due to the impact of the international energy crisis in recent years, the price of crude oil has remained high, which has led to a continuous rise in the price of its downstream product polyethylene resin; while the price of plastic products, especially agricultural plastic products, has not risen much, so polyethylene plastic pipes, The price of the film market has risen accordingly, which is difficult for the majority of farmers to accept. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08J5/18C08K5/14
Inventor 黄清张智虎
Owner 兰州定元塑料制品有限责任公司
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