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Halogen-free flame-retardant dicyclopentadiene material and preparation method thereof

A technology of polydicyclopentadiene and dicyclopentadiene, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve secondary disasters, and flame retardants cannot react with dicyclopentadiene monomer , Halogenated flame retardant use day limit and other issues, to achieve good flame retardant performance, simple and easy preparation method, and improved mechanical properties

Active Publication Date: 2012-06-06
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ①The flame retardant cannot react with dicyclopentadiene monomer, and has good compatibility with polydicyclopentadiene, without precipitation and migration effects;
Although this method has a good flame retardant effect, the use of halogenated flame retardants is increasingly restricted due to the release of a large amount of smoke and corrosive gases when the halogen compound is burned, which will cause secondary disasters.

Method used

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  • Halogen-free flame-retardant dicyclopentadiene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Preparation of Modified Aluminum Hydroxide

[0044] Weigh 100 parts of aluminum hydroxide powder (particle size = 11 μm) in a beaker to prepare a suspension in 300 parts of deionized water. Stir the aluminum hydroxide suspension at a stirring speed of 1000rmp and heat to 80°C, add 2 parts of stearic acid, stir for 30min, cool down to room temperature, filter, and dry at 110°C for 10h. The modified aluminum hydroxide is obtained, and the activation index is >99.9%.

Embodiment 2-9

[0046] The test method is the same as in Example 1, and the modification results of different modifiers and different dosages are shown in Table 1.

[0047] The modification effect of different modifiers in table 1 to aluminum hydroxide

[0048]

Embodiment 10

[0050] Under nitrogen protection, 40 parts of dicyclopentadiene monomers, 30 parts of modified aluminum hydroxide obtained in Example 1, 3 parts were uniformly mixed under a high-speed mixer to obtain component A; 60 parts of dicyclopentadiene and 1.5 parts of triethylaluminum were uniformly mixed under a high-speed mixer to obtain component B; under nitrogen protection, group A and B According to the volume ratio of 1:1, it is injection molded by reaction injection molding machine, and the material properties are shown in Table 2.

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Abstract

The invention discloses a halogen-free flame-retardant dicyclopentadiene material and a preparation method thereof. The material consists of polydicyclopentadiene, flame retardant, modifier and catalyst, wherein the flame retardant is silane coupling agent, titanate coupling agent, aluminium zirconate coupling agent, organic chromium coupling agent, higher fatty acid and salt thereof, phosphate, unsaturated organic acid or organic ammonium salt modified aluminium hydroxide. The preparation method prepares the flame-retardant material by using reaction injection moulding. The oxygen index of the obtained material is 22 to 26 percent, and the horizontal combustion test can reach HB level; and the bending strength is 40 to 45MPa, the bending modulus is 1,400 to 1,700MPa, the tensile strengthis 34 to 37MPa, the impact strength is 26-80kJ / m<2>, and the hardness is 74 to 76 Shaw D. The material does not contain halogen flame retardant, and has high flame-retardant performance and high mechanical property.

Description

technical field [0001] The invention relates to a flame-retardant polydicyclopentadiene material and a preparation method thereof. Background technique [0002] Polydicyclopentadiene material has excellent physical and mechanical properties and good chemical stability, especially suitable for making large structural parts. However, polydicyclopentadiene is composed of hydrocarbons containing unsaturated double bonds and is very flammable, which limits its application in many fields such as electronics, electrical appliances, transportation, and decorative materials. [0003] To improve the flame retardancy of polydicyclopentadiene materials, the following factors are usually considered: [0004] ①The flame retardant cannot react with dicyclopentadiene monomer, and has good compatibility with polydicyclopentadiene, without precipitation and migration effects; [0005] ②The flame retardant cannot affect the activity of the catalytic system; [0006] ③The flame retardant mus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F132/08C08F4/69C08K9/04C08K9/06C08K3/22C09C1/40C09C3/12C09C3/08C09C3/06
Inventor 于文杰王健董火成朱小树孙嘉鹏李宁
Owner LIMING RES INST OF CHEM IND
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