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Modified hard crosslinked polyvinyl chloride flame-retardant foam and preparation method thereof

A technology of cross-linked polyvinyl chloride and flame-retardant foam, which is applied in the field of polymer foam materials, can solve the problems of low flame-retardant grade and unsuitable for high flame-retardant requirements, and achieve good flame-retardant effects

Active Publication Date: 2014-09-10
维赛(江苏)复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the rigid cross-linked polyvinyl chloride foam prepared by the existing method has flame retardancy, its flame retardancy level is low (B2 grade), and it is not suitable for occasions with high flame retardancy requirements (such as B1 grade).

Method used

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  • Modified hard crosslinked polyvinyl chloride flame-retardant foam and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The formula components are composed of the following weight ratios: 90 parts of polyvinyl chloride paste resin with a K value of 70, 10 parts of chlorinated polyvinyl chloride resin with a chlorine content of 64%, 3 parts of triallyl isocyanurate, 30 parts of diphenylmethane diisocyanate modified by carbodiimide-urea ketimine, 9 parts of cis-cyclohexane-1,2-dicarboxylic anhydride, mixture of azodicarbonamide and azobisisobutyronitrile 4 parts, and the weight ratio of azodicarbonamide to azobisisobutyronitrile is 1:1, 2 parts of epoxy soybean oil, 2 parts of hollow glass microspheres, high activity phosphate ester LYCO-P08 (or high activity phosphate ester MAX-P16) 5 copies.

[0025] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liquid according to the stated weight, and stir Get a uniform pa...

Embodiment 2

[0027] The formula components are composed according to the following weight ratios: 99 parts of polyvinyl chloride paste resin with a K value of 80, 1 part of chlorinated polyvinyl chloride resin with a chlorine content of 68%, and 15 parts of trimethylolpropane trimethacrylate , 70 parts of polymethylene polyphenyl polyisocyanate (commercially available as a mixture), 24 parts of methyl hexahydrophthalic anhydride, 8 parts of a mixture of azodicarbonamide and azobisisobutyronitrile, and azobis The weight ratio of formamide to azobisisobutyronitrile is 1:5, epoxidized soybean oil is 15 parts, titanium dioxide is 6 parts, and triaryl phosphate is 30 parts.

[0028] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liquid according to the stated weight, and stir Get a uniform paste mixture in 20 minutes;...

Embodiment 3

[0030] The formula components are composed according to the following weight ratios: 95 parts of polyvinyl chloride paste resin with a K value of 75, 5 parts of chlorinated polyvinyl chloride resin with a chlorine content of 70%, and 8 parts of trimethylolpropane trimethacrylate , 25 parts of diphenylmethane diisocyanate modified by carbodiimide-urea ketimine and 25 parts of polymethylene polyphenyl polyisocyanate, 10 parts of methyl hexahydrophthalic anhydride, azodicarbonamide and azodiisocyanate 6 parts of nitrile mixture, and the weight ratio of azodicarbonamide to azobisisobutyronitrile is 1:3, 10 parts of epoxy soybean oil, 3 parts of titanium dioxide, 5 parts of carbon nanotubes, low corrosion phosphate ester LYCO -P30 is 15 servings.

[0031] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liq...

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Abstract

The invention discloses modified hard crosslinked polyvinyl chloride flame-retardant foam and a preparation method thereof. The modified hard crosslinked polyvinyl chloride flame-retardant foam is prepared from 90-99 parts by weight of polyvinyl chloride paste resin, 1-10 parts by weight of chlorinated polyvinyl chloride resin, 3-15 parts by weight of a cross-linking agent, 30-70 parts by weight of isocyanate, 9-24 parts by weight of anhydride, 4-8 parts by weight of an azo foaming agent, 2-15 parts by weight of epoxy soybean oil, 2-6 parts by weight of a filling material and 5-30 parts by weight of a fire retardant. Through formula optimization, the modified hard crosslinked polyvinyl chloride flame-retardant foam having a B1 flame-retardant level is prepared. The modified hard crosslinked polyvinyl chloride flame-retardant foam has original excellent properties of the modified hard crosslinked polyvinyl chloride foam and has good flame resistance.

Description

technical field [0001] The invention relates to the field of polymer foam materials, in particular to a modified rigid cross-linked polyvinyl chloride flame-retardant foam and a preparation method thereof. Background technique [0002] Rigid cross-linked polyvinyl chloride foam has the typical characteristics of structural core materials such as light weight, high strength, and high modulus. Compared with other high-performance foams such as polymethacrylimide foam and polyetherimide foam, it has a With the advantages of low cost, high water resistance and good flame retardant effect, it has more and more applications in the fields of ships, wind energy, transportation, sports equipment, aerospace and other fields. [0003] Regarding the raw material formula and preparation method of rigid cross-linked polyvinyl chloride foam, many patents have been published, such as US2007 / 0200266A1 and US2010 / 0068487, Chinese patent CN101580573A, etc. Although the rigid cross-linked poly...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L27/24C08K13/04C08K13/02C08K7/28C08K7/00C08K5/521C08K5/523C08K5/06C08K5/03C08J9/10
Inventor 苑初明
Owner 维赛(江苏)复合材料科技有限公司
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