Glass fibre reinforced nylon colorful heat insulation stripe for al-alloy door & window and method for preparing same
A technology of aluminum alloy doors and windows and glass fiber, which is applied in windows/doors, building components, buildings, etc., and can solve the requirements of glass fiber reinforced nylon 66 heat insulation strips on mechanical properties, appearance, size processing fluidity, and dense heat insulation profiles It is difficult to meet the requirements of the degree of difficulty, increase the processing technology, and the difficulty of mold design, etc., to achieve excellent mechanical properties, excellent thermal oxygen stability and weather resistance, and high dimensional stability.
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Embodiment 1
[0042] The composition and weight ratio of the glass fiber reinforced nylon colored heat insulation strips used in aluminum alloy doors and windows in this embodiment are as follows:
[0043] Nylon 66 resin: relative viscosity 2.5Pa.s, 100 parts
[0044] Glass fiber: alkali-free long glass fiber, 20 parts
[0045] Inorganic filler: 10 parts of hollow microspheres, 10 parts of mica
[0046] Toughening agent: ethylene-octene-maleic anhydride copolymer 12 parts
[0047] Coupling agent: 1 part of γ-glycidoxypropyltrimethoxysilane
[0048] Dispersed lubricant: 1.5 parts of bisethylene amide
[0049] Antioxidant: Dilauryl Thiodipropionate 0.6 parts
[0050] Light stabilizer: 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl) sebacate
[0051] Heat stabilizer: 0.2 parts of dibutyltin dilaurate
[0052] Color masterbatch: 4 parts of pearl white masterbatch
[0053] This embodiment is used for the preparation method of the glass fiber reinforced nylon colored heat insulation strip...
Embodiment 2
[0059] The components and weight proportions of the colored heat-insulating strips of this embodiment differ from those of Embodiment 1 in that:
[0060] The glass fiber is an alkali-free short glass fiber, and the length of the glass fiber is 2-5 μm;
[0061] The dispersing lubricant is 1.0 parts of bisethylene amide and 0.5 parts of erucamide;
[0062] Antioxidants are 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite and 0.4 parts of tetrakis[β-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] pentaerythritol esters.
[0063] The preparation method of the colored heat insulation strip of the present embodiment, its steps are as follows:
[0064] 1) Pretreat the short alkali-free glass fiber with a silane coupling agent.
[0065] 2) Mix the above-mentioned nylon 66 resin, toughening agent, oxidizing agent, heat stabilizer, light stabilizer, inorganic filler, and pretreated alkali-free short glass fiber evenly, and then melt and blend them through a twin-screw extru...
Embodiment 3
[0069] The components and weight proportions of the colored heat-insulating strips of this embodiment differ from those of Embodiment 1 in that:
[0070] Using 40 parts by weight of alkali-free long glass fiber as a reinforcement system without adding inorganic fillers;
[0071] The consumption of toughener is 10 parts by weight;
[0072] The dispersing lubricant is 1.5 parts of artificial wax;
[0073] Antioxidants are 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite and 0.4 parts of tetrakis[β-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] pentaerythritol esters.
[0074] The difference between the preparation method of the colored heat-insulating strips in this embodiment and the first embodiment is that the temperature in each area increases by 3-5°C during material processing, and the speed of the host machine is relatively accelerated during granulation, which is 450-600RPM. The traction speed is slightly lowered to 10-16RPM.
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