Low temperature resistant PVC film and preparation method thereof

A technology of PVC film and low temperature resistance, which is applied in the field of low temperature resistant PVC film and its preparation, and can solve the problems of low flame retardant efficiency, reduced flame retardancy, and poor low temperature resistance

Active Publication Date: 2017-09-12
广州雷诺丽特塑料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the use of PVC film, the content of plasticizer in its formula is limited to a certain extent. Therefore, PVC film with low temperature resistance requirements cannot be improved by increasing the content of plasticizer as much as possible. Linear structure dibasic acid ester plasticizers with good low temperature performance (such as DOA, DNA, DOS, etc.), or add impact modifiers such as chlorinated polyethylene, MBS, acrylic resin, or mix high-cost NBR or Polyurethane elastomer is modified to improve low temperature resistance and impact resistance; however, dibasic acid esters with a straight-chain structure can only be used as auxiliary plasticizers because they are secondary plasticizers, and their content should not exceed all plasticizers in the formula at most Therefore, due to the limited amount of linear dibasic acid ester plasticizer, the improvement of low temperature and impact resistance is quite limited; in addition, impact resistance modification such as chlorinated polyethylene, MBS, acrylic resin, etc. Due to their respective limiting factors such as transparency, weather resistance, whitening, flame retardancy, cost, etc., it cannot achieve the desired effect in improving the performance of PVC film against extremely low temperature.
[0003] PVC resin itself is a flame retardant material, but due to the needs of processing and application and hardness, general-purpose plasticizers are added to the formula to reduce the flame retardancy of PVC materials. Often by adding chlorinated paraffin, phosphate ester, Antimony trioxide, aluminum hydroxide and other flame retardants are used to make the material reach a certain flame retardant standard. Among them, chlorinated paraffin and phosphate ester can be used as auxiliary plasticizers for transparent and non-transparent formulations. The disadvantage is poor low temperature resistance. And in the formulation, due to the occupation of part of the plasticizer function, the amount of the main plasticizer is correspondingly reduced, so that the low temperature resistance of the flame retardant formula is lower than that of the original formula without flame retardant requirements; antimony trioxide and aluminum hydroxide, etc. Inorganic flame retardants can only be used in non-transparent formulations. Antimony trioxide has a very good flame retardant effect, but because antimony is a heavy metal, the scope of use is very limited, and aluminum hydroxide is a good smoke suppressant, but it is flame retardant low efficiency
Due to the above factors, PVC materials with a plasticizer content of about 50 parts (corresponding to 100 parts of PVC resin added with 50 parts of plasticizer) must have certain flame retardant properties (EN71-2), and only close to that can be obtained through formula optimization design. The low temperature resistance of minus 40 degrees Celsius can only reach the edge of the extreme cold area, and there is still a considerable distance from the requirement of minus 40 degrees Celsius in the extreme cold region

Method used

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  • Low temperature resistant PVC film and preparation method thereof

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Embodiment 1

[0023] A kind of low-temperature resistant PVC film, its preparation raw material comprises the component of following parts by weight: 100 parts of PVC elastomer resin powders (containing the vinyl chloride-vinyl acetate copolymer of 4.5%), 30 parts of linear chains are C9 phthalo Ester, 10 parts DOA and 20 parts Reofos.

[0024] The preparation method of above-mentioned low temperature resistant PVC film is as figure 1 As shown, it includes the following steps: after weighing the components in proportion, add them to the high-speed mixer 1 and mix them evenly, then enter the internal mixer 2 (also can be a planetary extruder) for internal mixing and plasticization, and then enter the double-roller open The refining machine 3 is then plasticized to make it uniform, and then the rubber material enters the filter 4 to filter impurities, and then is rolled by the inverted L-shaped 4-wheel calender 5. The wheel set composed of Ra 0.07um rubber wheel 8 is embossed and formed, fol...

Embodiment 2

[0028] A kind of low-temperature-resistant PVC film, its preparation raw material comprises the following components by weight: 100 parts of PVC elastomer resin powder (containing 4% vinyl chloride-vinyl acetate copolymer), 34 parts of straight chains are C9 phthalo Ester, 11 parts of DOA, 18 parts of Reofos and 0.5 parts of fatty alcohol-C12-15-polyoxyethylene ether.

[0029] The preparation method of above-mentioned low temperature resistant PVC film is as figure 1 As shown, it includes the following steps: after weighing the components in proportion, add them to the high-speed mixer 1 and mix them evenly, then enter the internal mixer 2 (also can be a planetary extruder) for internal mixing and plasticization, and then enter the double-roller open The refining machine 3 is then plasticized to make it uniform, and then the rubber material enters the filter 4 to filter impurities, and then is rolled by the inverted L-shaped 4-wheel calender 5. The wheel set composed of Ra 0....

Embodiment 3

[0033] A kind of low-temperature-resistant PVC film, its preparation raw material comprises the following components by weight: 100 parts of PVC elastomer resin powder (containing 5% vinyl chloride-vinyl acetate copolymer), 38 parts of straight chains are C10 phthalo Ester, 12 parts DNA, 16 parts Disflamoll, 2 parts fatty alcohol-C12-15-polyoxyethylene ether and 4 parts calcium zinc stabilizer.

[0034] The preparation method of above-mentioned low temperature resistant PVC film is as figure 1As shown, it includes the following steps: after weighing the components in proportion, add them to the high-speed mixer 1 and mix them evenly, then enter the internal mixer 2 (also can be a planetary extruder) for internal mixing and plasticization, and then enter the double-roller open The refining machine 3 is then plasticized to make it uniform, and then the rubber material enters the filter 4 to filter impurities, and then is rolled by the inverted L-shaped 4-wheel calender 5. The w...

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Abstract

The invention discloses a low temperature resistant PVC film. The low temperature resistant PVC film is prepared from the following components in parts by weight: 100 parts of PVC elastomer resin powder, 30 to 45 parts of main plasticizer, 10 to 15 parts of cold-proof plasticizer, and 12 to 20 parts of flame retardant plasticizer. The invention also discloses a preparation method of the low temperature resistant PVC film. The PVC film prepared by the method has a very low temperature (minus 55 degrees Celsius) resistant performance and has a flame retardant effect.

Description

technical field [0001] The invention relates to a PVC film, in particular to a low-temperature-resistant PVC film and a preparation method thereof. Background technique [0002] Due to the use of PVC film, the content of plasticizer in its formula is limited to a certain extent. Therefore, PVC film with low temperature resistance requirements cannot be improved by increasing the content of plasticizer as much as possible. Linear structure dibasic acid ester plasticizers with good low temperature performance (such as DOA, DNA, DOS, etc.), or add impact modifiers such as chlorinated polyethylene, MBS, acrylic resin, or mix high-cost NBR or Polyurethane elastomer is modified to improve low temperature resistance and impact resistance; however, dibasic acid esters with a straight-chain structure can only be used as auxiliary plasticizers because they are secondary plasticizers, and their content should not exceed all plasticizers in the formula at most Therefore, due to the lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/12C08K5/11C08K5/523C08K5/00
CPCC08J5/18C08J2327/06C08J2427/06C08L27/06C08L2201/02C08L2203/16C08L2205/03C08K5/12C08K5/11C08K5/523C08K5/00
Inventor 曾勇军江溪
Owner 广州雷诺丽特塑料有限公司
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