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Durable polyvinyl chloride salt membrane composition and preparation method thereof

A technology of polyvinyl chloride and composition is applied in the field of durable polyvinyl chloride salt film composition and preparation thereof, which can solve problems such as poor durability, and achieve the effects of good durability, high cost performance and simple production process

Inactive Publication Date: 2013-10-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The salt film of this invention also uses low-molecular plasticizers, which has poor durability

Method used

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  • Durable polyvinyl chloride salt membrane composition and preparation method thereof
  • Durable polyvinyl chloride salt membrane composition and preparation method thereof
  • Durable polyvinyl chloride salt membrane composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～15

[0034] The formula of embodiment 1~5 is as shown in table 1 below:

[0035] Formulation table of table 1 embodiment 1~5

[0036]

Example 1

Example 2

Example 3

Example 4

Example 5

PVC (P=2500)

100

100

100

100

100

Calcium Zinc Composite Stabilizer

4

5

6

7

8

TOTM

10

10

10

20

20

TOPM

30

40

40

30

10

Polyester plasticizer

0

0

0

0

10

EVA

20

10

5

5

5

CPE

5

5

0

5

5

Antioxidant 1010

1.0

1.5

1.5

1.0

0.5

stearate

0.6

0.4

0.4

0.6

0.2

PE wax

0.4

0.2

0.4

0.2

0.2

Titanium dioxide

4

4

4

4

4

Light stabilizer UV-419

1.0

1.0

1.0

1.5

1...

Embodiment 1～10

[0043] The preparation method of embodiment 1~10:

[0044] (1) Mixing of raw materials: Weigh the materials according to the ratio of raw materials, then add them to the high-speed mixer and mix until the mixing temperature is 120°C, put the materials into the low-speed mixer, and discharge the materials when the temperature of the materials cools down to 40°C.

[0045] (2) Granulation process: The mixed material is granulated by twin-screw, and the process parameters are set as follows:

[0046] Extruder temperature (°C): Zone 1, Zone 2, Zone 3, Zone 4, Zone 5

[0047] 110 120 130 140 150 150

[0048] (3) Calendering process: the pellets are calendered into a film with a calender, and the process parameters are set as follows:

[0049] Calender roll temperature (°C): 1 roll, 2 rolls, 3 rolls, 4 rolls, 5 rolls

[0050] 190 185 175 170 150

Embodiment 11～15

[0051] The preparation method of embodiment 11~15:

[0052] (1) Mixing of raw materials: Weigh the materials according to the ratio of raw materials, then add them to the high-speed mixer and mix until the mixing temperature is 120°C, put the materials into the low-speed mixer, and discharge the materials when the temperature of the materials cools down to 40°C.

[0053] (2) Calendering process: the pellets are calendered into a film with a calender, and the process parameters are set as follows:

[0054] Calender roll temperature (°C): 1 roll, 2 rolls, 3 rolls, 4 rolls, 5 rolls

[0055] 200 195 185 180 160

[0056] Performance test method: After mixing the materials, use a double-roll mill to open the sheet, press the sample sheet at 180°C in a molding machine, and test the performance after preparing the test sample. The result is as follows:

[0057] The performance test result of embodiment 1~5 is as shown in table 4 below:

[0058] Table 4 Embodiment 1...

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Abstract

The invention relates to a durable polyvinyl chloride salt membrane composition and a preparation method thereof and belongs to the technical field of high polymer materials. The durable polyvinyl chloride salt membrane is prepared from the following raw materials in parts by mass: 100 parts of polyvinyl chloride, 3-8 parts of stabilizer, 20-100 parts of plasticizer, 5-25 parts of low temperature modifier, 0.2-1.0 part of lubricating agent, 0.2-2.0 parts of antioxidant, 0.2-2.0 parts of light stabilizer, 1-5 parts of light screener and 0.2-2.0 parts of colouring agent. The preparation method comprises the processes of mixing raw materials, pelleting and calendaring or comprises the processes of mixing raw materials and calendaring. The durable polyvinyl chloride salt membrane adopts a migration-resistant plasticizer and the low temperature modifier, so that the salt membrane can have good durability and low temperature flexibility and can not be crisp after being used for a long time; and a production technology is simple, and the produced thin film has high cost performance.

Description

technical field [0001] The invention relates to a durable polyvinyl chloride salt film composition and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Salt is indispensable to the national economy and daily life, and is mainly produced by evaporating seawater in sun-dried salt ponds. When there are many rainy days, the rainwater can dissolve the crystallized salt and reduce the salt production. The use of salt film thatch to cover the crystallization pool can greatly improve the salt production and quality. When used, the salt film must withstand high temperature in summer, strong sunlight and low temperature in winter, and must have properties such as high temperature resistance, low temperature resistance, and aging resistance. [0003] The current general-purpose salt film is mainly made of polyvinyl chloride, and the small-molecule plasticizer added to it will migrate to the surface of the film, making ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/08C08L23/28C08L67/00C08K13/02C08K3/04C08K3/22C08K5/12C08K5/11
Inventor 贾小波张新华王晶李静桂俊杰刘容德张桦刘浩
Owner CHINA PETROLEUM & CHEM CORP
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