A high-efficiency flame-retardant polyurethane composition
A thermoplastic polyurethane and flame retardant technology, which is applied in the field of high-efficiency flame retardant polyurethane compositions, can solve the problems of material performance impact, suffocation and death, and easy combustion, and achieves excellent flame retardant effect, low cost, and good flame retardant effect. Effect
Active Publication Date: 2019-06-07
上海集韧复合材料有限公司
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Problems solved by technology
The disadvantage of TPU is that it is extremely flammable and releases toxic gases such as HCN and CO after burning, which can easily cause people to suffocate and die
[0006] Although it has good flame retardant properties, as the amount added increases, it will have some adverse effects on the properties of the material itself
Method used
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Embodiment 1
[0050] A high-efficiency flame-retardant polyurethane composition, comprising the following components by weight:
[0051] Molecular weight is 1×10 6 100 parts of g / mol polyether thermoplastic polyurethane
[0052] 5 parts of bisphenol A epoxy resin
[0053] Antioxidant 1010 1 serving
[0054] 3 parts of γ-aminopropyltriethoxysilane
[0055] 10 parts of DOPO derivative flame retardant containing silicon and fluorine
[0056] 10 parts of aluminum hydroxide with a particle size of 10 μm
[0057] Among them, the structural formula of the DOPO derivative flame retardant containing silicon and fluorine is:
[0058]
[0059] Wherein, the synthesis steps of the DOPO derivative flame retardant containing silicon and fluorine are:
[0060](1) 19.3g of aminodimethylpentafluorophenylsilane and 8.2g of 2,3,5,6-tetrafluoro-p-dibenzaldehyde were heated in 137g of ethanol at 70°C for 6h, and after the reaction was completed, a mixture containing The reaction system of intermediate ...
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Abstract
The invention relates to a resin composition and in particular relates to an efficient flame-retarding polyurethane composition. The efficient flame-retarding polyurethane composition is prepared from the following components in parts by weight: 100 parts of thermoplastic polyurethane (TPU), 3 to 8 parts of a reaction type chain extender, 0.5 to 1.5 parts of an antioxygen, 1 to 5 parts of a coupling agent, 5 to 10 parts of a DOPO (9,10-bihydro-9-oxa-10-phosphaphenanthrene-10-oxide) derivative flame retardant containing silicon and fluorine and 5 to 15 parts of filling. According to the efficient flame-retarding polyurethane composition provided by the invention, on one hand, the structure of the flame retardant contains a lot of fluorine elements so that the flame retardant has a relatively high surface transferring property; a high flame-retarding membrane is formed on the surface of a base material and the structure contains a silicon element, so that the efficient flame-retarding polyurethane composition has good flame-retarding effect, no smoke, high temperature resistance and good chemical stability and the mechanical properties of the TPU composition can be improved; and on the other hand, when the content of the flame retardant reaches 5 percent to 10 percent, the content of cured products can reach UL94, grade V-0.
Description
technical field [0001] The present invention relates to a resin composition, in particular to a high-efficiency flame-retardant polyurethane composition. Background technique [0002] Thermoplastic polyurethane (TPU) has the characteristics of good wear resistance, wide hardness range, high strength and high elongation, good shock absorption effect, good oil resistance, etc. It is a kind of synthetic material between plastic and rubber. "Third Generation Synthetic Rubber". It is widely used in the automotive industry, aerospace, electronic communications, textile industry and other industries. [0003] TPU polymers are typically prepared by reacting (1) a hydroxyl terminated polyether or hydroxyl terminated polyester, (2) a chain extender, and (3) an isocyanate compound. Various types of the three reactants have been disclosed in the literature. TPU polymers prepared from these three reactants can be used in a variety of fields where products are made by melt processing T...
Claims
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IPC IPC(8): C08L75/08C08L75/06C08L63/00C08L63/04C08K5/544
CPCC08L75/06C08L75/08C08L2201/02C08L2201/08C08L63/00C08L63/04C08K5/544
Inventor 徐再徐惠凤徐靖丁磊赵琴芬卢路平
Owner 上海集韧复合材料有限公司