Halogen-free flame-retardant reinforced PBT modified material and preparation method thereof
A technology of modified materials and matrix materials, applied in the field of polymers, can solve the problems of poor mechanical properties and electrical properties of modified materials, unable to meet the increasingly high requirements of comprehensive performance, easy to catch fire, etc., and is suitable for mass production, The effect of removing potential safety hazards and low cost
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Embodiment 1
[0037] For the halogen-free flame-retardant PBT modified material in this example, each component is weighed according to the weight ratio in Table 1-1:
[0038]
[0039] Table 1-1
[0040] In this example, PBT is used as the base material, and the components are added according to the ratio in Table 1-1. The lubricant is used in conjunction with PETS and F100. Among them, the lubricant PETS can prevent the storage material from slipping and lubricate Agent F100 can improve fluidity.
[0041] Its preparation method is as follows:
[0042] a. Weigh each component according to the weight percentage described in Table 1-1, and then weigh the PBT, organosilicon-coated aluminum hypophosphite, MCA, antioxidant, lubricant, coupling agent, anti-dripping agent and the transesterification inhibitor are mixed evenly by high-speed mixing equipment, the mixing rate is 200r / min, and the mixing time is 5min;
[0043] b. Pass the mixed materials in step a into the twin-screw extruder, s...
Embodiment 2
[0051] The halogen-free flame-retardant PBT modified material in this embodiment, its composition is according to the weight ratio in 2-1:
[0052]
[0053] table 2-1
[0054] Compared with Example 1, this embodiment selects 42.2% PBT base material and 10% PET base material, and the process steps and process steps and process parameters in Example 1 are all the same, and then the obtained PBT modified material is made into a performance Test, the test results are shown in Table 2-2:
[0055] Test Results:
[0056]
[0057] Table 2-2
[0058] In this example, 42.2% PBT and 10% PET are selected as the base materials. The two materials have similar structures, and the cost price of PET is lower. Using them together can not only ensure excellent comprehensive performance, but also reduce costs.
Embodiment 3
[0060] The halogen-free flame-retardant PBT modified material in this embodiment, its composition is according to the weight ratio in 3-1:
[0061]
[0062] Table 3-1
[0063] The process steps are the same as in Example 1, and the parameters are: temperature: 220°C, 245°C, 240°C, 235°C, 240°C, 240°C, 240°C, 235°C, 235°C (head), 235°C (cylinder); Screw speed: 250r / min
[0064] The test results are shown in Table 3-2:
[0065]
[0066] Table 3-2
[0067] In this embodiment, the halogen-free flame retardant is coated with aluminum hypophosphite with organosilicon, which can also meet the requirements of excellent comprehensive performance, but the cost is relatively high.
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Abstract
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