Flame-retarded expandable polystyrene copolymer

A technology of expandable polystyrene and copolymers, applied in the field of expandable polystyrene, can solve the problems of flame retardants not being uniformly dispersed, foam shrinkage and collapse, and poor compatibility, so as to avoid foam shrinkage and collapse , Improve heat resistance, increase the effect of flame retardant ability

Inactive Publication Date: 2014-09-17
ZHEJIANG QUZHOU WANNENGDA SCI & TECH
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AI-Extracted Technical Summary

Problems solved by technology

[0005] The flame-retardant expandable polystyrene products of the above patents and known technologies are all modified by introducing a flame retardant during polymerization, but because the flame retardant cann...
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Abstract

The invention discloses a flame-retarded expandable polystyrene copolymer. In a reaction kettle, pure water is filled, a certain amount of a dispersant, an initiator, styrene, vinylidene chloride, trifluorochlor oethylene and glycidyl methacrylate monomers are added, and after the obtained mixture is heated to a reaction temperature, the obtained product is polymerized so as to obtain a product of the invention.

Technology Topic

Glycidyl methacrylatePolystyrene +5

Examples

  • Experimental program(4)
  • Comparison scheme(5)

Example Embodiment

[0018] Example 1:
[0019] Step 1. Preparation of the water phase
[0020] Add 800Kg of pure water and 2Kg of polyvinyl alcohol to a 2 cubic meter reactor, and mix well.
[0021] Step 2. Preparation of the oil phase
[0022] In a 1 cubic meter reactor, add 100Kg styrene monomer, 10Kg vinylidene chloride, 3Kg trifluorochloroethylene, 1Kg glycidyl methacrylate, 0.3Kg white oil, 0.3Kg polyethylene wax, and then add 0.2Kg. Oxide benzoyl and stir well.
[0023] Step 3. Polymerization
[0024] Add the oil phase solution prepared in step 2 to the reaction kettle containing the prepared water phase in step 1, and react at 90°C for 12 hours. After the reaction, the residual monomers are removed by vacuum desorption, and the material is filtered out. Get the product. The number is M-1.

Example Embodiment

[0025] Example 2
[0026] Step 1. Preparation of the water phase
[0027] Add 500Kg of pure water and 0.5Kg of polyvinyl alcohol into a 2 cubic meter reactor, and stir evenly.
[0028] Step 2. Preparation of the oil phase
[0029] In a 1 cubic meter reactor, add 100Kg styrene monomer, 5Kg vinylidene chloride, 1Kg trifluorochloroethylene, 0.5Kg glycidyl methacrylate, 0.1Kg white oil, 0.1Kg polyethylene wax, and then add 0.05Kg Benzoyl peroxide, stir well.
[0030] Step 3. Polymerization
[0031] Add the oil phase solution prepared in step 2 to the reaction kettle containing the prepared water phase in step 1, and react at 100°C for 10 hours. After the reaction, the residual monomers are removed by vacuum desorption, and the material is filtered out. Get the product. The number is M-2.

Example Embodiment

[0032] Example 3
[0033] Step 1. Preparation of the water phase
[0034] Add 1000Kg of pure water and 2Kg of polyvinyl alcohol into a 2 cubic meter reactor, and mix well.
[0035] Step 2. Preparation of the oil phase
[0036] In a 1 cubic meter reactor, add 100Kg styrene monomer, 20Kg vinylidene chloride, 5Kg chlorotrifluoroethylene, 2Kg glycidyl methacrylate, 0.5Kg white oil, 0.5Kg polyethylene wax, and then add 0.5Kg Oxide benzoyl and stir well.
[0037] Step 3. Polymerization
[0038] Add the oil phase solution prepared in step 2 to the reaction kettle containing the prepared water phase in step 1, and react at 80°C for 15 hours. After the reaction, the residual monomers are removed by vacuum desorption, and the material is filtered out. Get the product. The number is M-3.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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