A kind of polyurethane interior foam with low odor and high flame retardancy and preparation method thereof
A high flame-retardant, polyurethane technology, applied in the field of automotive polyurethane interior foam and its preparation, and polymer materials, can solve the problems of user health hazards, unpleasant odors, etc., and achieve low odor, VOC, and good flame retardancy Effect
Active Publication Date: 2017-06-16
上海馨源新材料科技有限公司
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Problems solved by technology
[0002] In the field of chemistry and chemical engineering, flame retardants are usually added to make polyurethane soft foam obtain a certain flame retardancy, but the small molecular substances contained in additive flame retardants, such as TEP and TPP, will bring a special, Unpleasant smell, at the same time, in long-term use, the flame retardant in the foam will continue to migrate and emit, which is harmful to the health of users
Method used
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[0027] A low-odor and highly flame-retardant polyurethane interior foam for vehicles is characterized in that, in parts by weight, its formula is:
[0028]
[0029] Further, preferred polyurethane soft foam, according to parts by weight, its formula is:
[0030]
[0031]
[0032] 25kg / m 3 The formula is shown in Table 1:
[0033] Table 1 Formulation
[0034]
[0035] The hydroxyl value of BNE636 is 35. After adding it, the amount of TDI is increased appropriately, and at the same time, dichloromethane physical blowing agent is added, and the NCO index is 105.6%.
[0036] A method for preparing a polyurethane interior foam for vehicles with low odor and high flame retardancy is characterized in that it comprises the following steps:
[0037] (1) Preparation of raw materials: according to parts by weight, prepare the raw materials according to the formula;
[0038] (2) Mixing: Mix the raw materials prepared in step (1), and stir at a speed of 6000rpm for 6-8s;
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The invention discloses a low-odor and high-flame-retardancy automobile-used polyurethane interior foam. The low-odor and high-flame-retardancy automobile-used polyurethane interior foam comprises the following ingredients in parts by weight: 100-110 parts of PPG, 2.5-3.5 parts of water, 0.2-0.40 part of an amine catalyst, 0.5-1.0 part of silicone oil, 4.5-5.0 parts of a flame retardant BNE-636, 40-45.15 parts of TDI, 0.15-0.25 part of T-9 and 3-5 parts of dichloromethane, wherein the hydroxyl value of BNE-636 is 35, and the NCO index of polyurethane flexible foams is 105.6%. The invention also discloses a preparation method for the low-odor and high-flame-retardancy automobile-used polyurethane interior foam. The prepared polyurethane flexible foam not only obtains favorable flame retardancy but also has relatively low odor and VOC. A certain amount of a physical foamer is added to reduce the internal reaction temperature of the system to improve the stability.
Description
technical field [0001] The invention belongs to the field of chemistry and chemical engineering, relates to a polymer material, in particular to a polyurethane interior foam for vehicles with low odor and high flame retardancy and a preparation method thereof. Background technique [0002] In the field of chemistry and chemical engineering, flame retardants are usually added to make polyurethane soft foam obtain a certain flame retardancy, but the small molecular substances contained in additive flame retardants, such as TEP and TPP, will bring a special, Unpleasant smell, at the same time, in long-term use, the flame retardant in the foam will continue to migrate and emit, which is harmful to the health of users. [0003] Today, as automotive interior parts have increasingly stringent odor requirements, how to produce soft foams that are low-odor and meet the FMVSS302 flame retardant standard is a difficult problem. Contents of the invention [0004] The object of the pr...
Claims
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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08J9/08
CPCC08G18/28C08G18/6666C08J9/145C08J2375/08C08G2110/0083
Inventor 吴蔚林
Owner 上海馨源新材料科技有限公司