High-flame-retardant polypropylene material and preparation method thereof
A polypropylene material and high flame-retardant technology, which is applied in the field of high flame-retardant polypropylene material and its preparation, can solve the problems of great influence on the mechanical properties of materials, poor resistance to precipitation of flame retardants, and reduced heat resistance, etc., to achieve Improve fluidity and flame retardant performance, good flame retardant effect, good heat resistance effect
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[0066] The preparation method of the high flame-retardant polypropylene material corresponding to the above formula or the preferred formula includes the following steps:
[0067] 1) Prepare homopolymer polypropylene powder, brominated flame retardant, antimony flame retardant, flame retardant synergist, cooling masterbatch, toughening agent, lubricant, ultraviolet absorber and antioxidant according to the ratio Then add it into a horizontal mixing tank, premix at 50~60℃ for 20~50min, fully premix it evenly, and then weigh and pack according to actual production needs;
[0068] 2) Add homopolypropylene pellets and the pre-mixed materials in step 1) into a high-speed mixing tank, and mix for 1 to 2 minutes;
[0069] 3) Add the materials to the twin-screw extruder, perform high-temperature mixing and shearing, and then draw and pelletize after cooling with water to obtain a high flame-retardant polypropylene material.
[0070] Preferably, the screw diameter of the twin-screw extruder is...
Example Embodiment
[0082] Example 1:
[0083] A high flame-retardant polypropylene material, consisting of the following raw materials measured in parts by weight: homopolypropylene pellets: 63 parts; homopolypropylene powder: 15 parts; brominated flame retardant tetrabromobisphenol A :13 parts; antimony flame retardant antimony trioxide: 3 parts; flame retardant synergist magnesium hydroxide: 1 part; cooling masterbatch LV-20: 3 parts; toughening agent styrene-butadiene thermoplastic elasticity Body: 1 part; lubricant stearic acid: 0.5 part; ultraviolet absorber UV-234: 0.2 part; antioxidant 2,6-tertiary butyl-4-methylphenol: 0.3 part. The performance test results of the high flame-retardant polypropylene material are shown in Table 2.
Example Embodiment
[0084] Example 2:
[0085] A high flame-retardant polypropylene material, consisting of the following raw materials measured in parts by weight: homopolypropylene pellets: 64 parts; homopolypropylene powder: 9 parts; brominated flame retardant decabromodiphenyl ethyl Alkane: 15 parts; antimony flame retardant antimony pentoxide: 6 parts; flame retardant synergist magnesium aluminum hydrotalcite: 2 parts; cooling masterbatch LV-20: 1 part; toughening agent methyl methacrylate- Butadiene-styrene terpolymer: 1 part; lubricant ethylene bis-stearamide: 1 part; ultraviolet absorber UV-328: 0.5 part; antioxidant bis(3,5-tertiary butyl- 4-hydroxyphenyl) sulfide: 0.5 parts. The performance test results of the high flame-retardant polypropylene material are shown in Table 2.
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