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Tearing-resistant biaxially oriented polyester greenhouse film and production method thereof

A biaxially stretched polyester and greenhouse film technology, applied in the field of greenhouse film, can solve the problems of easy tearing, limited application, hard polyester film, etc., and achieve the effect of good flexibility

Active Publication Date: 2016-03-30
成都福全新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyester film is relatively hard and has low tear strength, and it is easy to tear under the action of strong wind outdoors.
This limits its application in agricultural greenhouse film

Method used

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  • Tearing-resistant biaxially oriented polyester greenhouse film and production method thereof
  • Tearing-resistant biaxially oriented polyester greenhouse film and production method thereof
  • Tearing-resistant biaxially oriented polyester greenhouse film and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A tear-resistant biaxially stretched polyester greenhouse film, made of the following raw materials in parts by weight: 2000g of terephthalic acid, 870g of ethylene glycol, 110g of 1,4-cyclohexanedimethanol, and polystyrene with a molecular weight of 1500 700g of dimethylsiloxane, 5g of ethylene glycol antimony catalyst, 1.5g of triphenyl phosphate, 3g of silicon dioxide blocking agent with a particle size of 5 μm, and 345g of EV2.

[0032] The production method of the tear-resistant biaxially stretched polyester greenhouse film specifically comprises the following steps:

[0033] (1) Mix terephthalic acid, ethylene glycol, 1,4-cyclohexanedimethanol, ethylene glycol antimony catalyst, antimony agent and EV234 according to the weighed ratio, add to the 5L reaction kettle, stir Half an hour; then slowly evacuate the reaction device to below 100Pa, then slowly fill the reaction device with nitrogen to 250KPa, and then slowly release nitrogen. The temperature of the proces...

Embodiment 2

[0037] A tear-resistant biaxially stretched polyester greenhouse film, made of the following raw materials in parts by weight: 1,800 g of terephthalic acid, 750 g of ethylene glycol, 100 g of 1,4-cyclohexanedimethanol, and a hydroxyl group with a molecular weight of 1,500 600g of blocked polydimethylsiloxane, 1g of ethylene glycol antimony catalyst, 0.5g of triphenyl phosphate, 2g of barium sulfate blocking agent with a particle size of 5μm, ST130063g.

[0038] The production method of the tear-resistant biaxially stretched polyester greenhouse film specifically comprises the following steps:

[0039] (1) Mix terephthalic acid, ethylene glycol, 1,4-cyclohexanedimethanol, ethylene glycol antimony catalyst, antimony agent and EV234 according to the weighed ratio, add to the 5L reaction kettle, stir Half an hour; then slowly evacuate the reaction device to below 100Pa, then slowly fill the reaction device with nitrogen to 250KPa, and then slowly release nitrogen. The temperature...

Embodiment 3

[0043] A tear-resistant biaxially stretched polyester greenhouse film, made of the following raw materials in parts by weight: 2100g of terephthalic acid, 1200g of ethylene glycol, 150g of 1,4-cyclohexanedimethanol, and polystyrene with a molecular weight of 1500 900g of dimethylsiloxane, 7g of ethylene glycol antimony catalyst, 1g of triphenyl phosphate, 10g of silicon dioxide blocking agent with a particle size of 5 μm, and 347g of EV2.

[0044] The production method of the tear-resistant biaxially stretched polyester greenhouse film specifically comprises the following steps:

[0045] (1) Mix terephthalic acid, ethylene glycol, 1,4-cyclohexanedimethanol, ethylene glycol antimony catalyst, antimony agent and EV234 according to the weighed ratio, add to the 5L reaction kettle, stir Half an hour; then slowly evacuate the reaction device to below 100Pa, then slowly fill the reaction device with nitrogen to 250KPa, and then slowly release nitrogen. The temperature of the proces...

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Abstract

The invention discloses a tearing-resistant biaxially oriented polyester greenhouse film and a production method thereof. The tearing-resistant biaxially oriented polyester greenhouse film is prepared from terephthalic acid, ethylene glycol, modified dihydric alcohol, a telechelic polymer, a catalyst, a first stabilizing agent, an opening agent and a second stabilizing agent. The production method comprises weighing terephthalic acid, ethylene glycol, modified dihydric alcohol, the catalyst, the opening agent and the second stabilizing agent according to a certain ratio, mixing the weighed materials to obtain a uniform mixture, putting the mixture into a reactor, heating the mixture for an esterification reaction, then adding the telechelic polymer and the first stabilizing agent into the reaction product, carrying out high vacuum polycondensation, discharging the product, carrying out cooling, carrying out grain-sized dicing to obtain polyester for a greenhouse film and carrying out bidirectional stretching on the polyester to obtain the tearing-resistant polyester greenhouse film. The polyester greenhouse film has good flexibility, tearing resistance, transparency and light and oxygen aging resistance and is completely suitable for the field of an agricultural greenhouse film.

Description

technical field [0001] The invention relates to the field of greenhouse films, in particular to a tear-resistant biaxially stretched polyester greenhouse film and a production method thereof. Background technique [0002] Agricultural greenhouse film is a special plastic film used for facility agricultural production and construction. It is another important agricultural production increase technology after seeds, fertilizers and pesticides. It is of great significance to the synergy of agriculture and the increase of farmers' production. At present, the most common agricultural greenhouse films in my country mainly include polyethylene and polyvinyl chloride. This kind of agricultural film is scattered in the soil, it is difficult to recycle, and the recycled plastic is difficult to reuse; processing by deep burial or incineration not only cannot eliminate "white pollution", but also brings a series of problems. [0003] Polyester plastic is a kind of thermoplastic used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/695C08G63/199C08K5/523
CPCC08G63/199C08G63/6956C08J5/18C08J2367/02C08K5/523
Inventor 白永平王利鹏张福臣李卫东
Owner 成都福全新材料有限公司
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