Low smoke halogen-free environment-protection fire-retardation type sheet molding compound and preparation method thereof

A sheet molding compound, flame-retardant technology, applied in the direction of coating, etc., can solve the problems of high smoke generation and strong corrosion, the comprehensive mechanical properties of sheet molding compound and the decline of surface quality, secondary hazards, etc., to achieve excellent Mechanical properties, solving the effect of high combustion smoke density and reducing combustion smoke density

Inactive Publication Date: 2013-02-27
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, halogen flame retardants will have high smoke and strong corrosion in their application, which will cause "secondary hazards"
Especially in recent years, people have paid more attention to fire safety. In order to prevent the generation of toxic and harmful gases during fires, halogenated flame retardants are no longer suitable for application in sheet moldin

Method used

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  • Low smoke halogen-free environment-protection fire-retardation type sheet molding compound and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0026] Example 1: The sheet molding compound of the present invention is composed of 60 parts by mass of unsaturated polyester resin, 40 parts of polystyrene slurry, 1.5 parts of initiator, 3 parts of thickener, and polymerization inhibitor. 0.03 parts, 8 parts release agent, 60 parts filler, 80 parts aluminum hydroxide, 5 parts silicone synergist, 3 parts smoke suppressant, 15 parts novolac resin, 50 parts glass fiber, 10 parts basalt fiber, first Grind the unsaturated polyester resin and the phenolic resin in a three-roll mill, and disperse the phenolic resin uniformly in the resin; then grind the resin, smoke suppressant, silicone synergist, initiator, and polymerization inhibitor. Add the agent and release agent to the batching kettle and stir at 400 rpm for 5 minutes; add the filler calcium carbonate and aluminum hydroxide to the batching kettle and stir vigorously at 800 rpm for 15 minutes; finally add the thickener and stir evenly ; Coat the prepared resin paste evenly o...

Example Embodiment

[0027] Example 2: The sheet molding compound of the present invention is composed of 60 parts by mass of unsaturated polyester resin, 40 parts of polystyrene slurry, 1.5 parts of initiator, 3 parts of thickener, and polymerization inhibitor. 0.04 parts, 9 parts release agent, 60 parts filler, 100 parts aluminum hydroxide, 5 parts silicone synergist, 4 parts smoke suppressant, 20 parts novolac resin, 50 parts glass fiber, 10 parts basalt fiber, first Grind the unsaturated polyester resin and the phenolic resin in a three-roll mill to uniformly disperse the phenolic resin in the resin; then grind the resin, smoke suppressant, silicone synergist, initiator, and polymerization inhibitor. Add the agent and release agent to the batching kettle and stir at 400 rpm for 5 minutes; add the filler calcium carbonate and aluminum hydroxide to the batching kettle and stir vigorously at 800 rpm for 15 minutes; finally add the thickener and stir evenly ; Coat the prepared resin paste evenly on...

Example Embodiment

[0028] Example 3: The sheet molding compound of the present invention is composed of 60 parts by mass of unsaturated polyester resin, 40 parts of polystyrene slurry, 1.5 parts of initiator, 3 parts of thickener, and polymerization inhibitor. 0.06 parts, 9 parts release agent, 60 parts filler, 100 parts aluminum hydroxide, 8 parts silicone synergist, 5 parts smoke suppressant, 20 parts novolac resin, 60 parts glass fiber, 20 parts basalt fiber, first Grind the unsaturated polyester resin and the phenolic resin in a three-roll mill to uniformly disperse the phenolic resin in the resin; then grind the resin, smoke suppressant, silicone synergist, initiator, and polymerization inhibitor. Add the agent and the release agent to the batching kettle and stir at 400 rpm for 5 minutes; add the filler calcium carbonate and aluminum hydroxide to the batching kettle and stir vigorously at 800 rpm for 15 minutes; finally add the thickener and stir evenly ; Coat the prepared resin paste evenl...

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Abstract

The present invention discloses a low smoke halogen-free environment-protection fire-retardation type sheet molding compound, which comprises, by weight, 60-80 parts of an unsaturated polyester resin mixture, 20-60 parts of a thermoplastic high molecule polymer slurry, 1-3 parts of an initiator, 2-4 parts of a thickener, 0.02-0.5 part of a polymerization inhibitor, 5-15 parts of a mold release agent, 90-140 parts of a filler, 80-150 parts of aluminum hydroxide powder, 1-10 parts of an organosilicon synergist, 1-8 parts of a smoke suppressant, 5-25 parts of a liner phenol formaldehyde resin, and 80-200 parts of reinforcing fibers. Compared with the conventional fire retardation agent, the low smoke halogen-free environment-protection fire-retardation type sheet molding compound has the following advantages that: a fire retardation performance of the composite material is increased, smoke density during burning is reduced, excellent mechanical properties of the material is maintained, and disadvantages of large smoke density during burning and low comprehensive mechanical performance of the existing fire-retardation sheet molding compound are solved.

Description

technical field [0001] The invention relates to a sheet molding compound, more precisely, a low-smoke, halogen-free, environment-friendly, flame-retardant sheet molding compound and a preparation method thereof. Background technique [0002] Sheet Molding Compound (Sheet Molding Compound, SMC) is a mixture of unsaturated polyester resin, thickener, initiator, crosslinking agent, filler, release agent, colorant, etc. into a resin paste impregnated with glass fiber roving or glass Fiber felt, and molded material formed by covering both sides with polyethylene or polypropylene film. As a rapidly developing molding compound, SMC has the advantages of high degree of mechanization, high production efficiency, stable product quality, high utilization rate of raw materials, low production cost, and smooth product surface. However, there are a large number of combustible organic compounds ( Unsaturated polyester resin, etc.), is easy to burn and produces thick smoke and poisonous ga...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08L51/00C08L61/06C08K13/06C08K9/06C08K3/22C08K7/10C08K7/14C08K7/06C08K3/34C08K3/24C08J7/04C08L23/06
Inventor 刘春林成文俊吴盾陶国良何越江
Owner CHANGZHOU UNIV
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