Glass fiber reinforced nylon compound used for extrusion molding, and preparation method and application thereof
A technology of extrusion molding and composites, which is applied in the field of polymers, can solve problems such as low melt strength, hollow shrinkage cavity, and deteriorated material properties, and achieve high melt strength, good surface properties, and high mechanical strength.
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[0071] Examples 1~8
[0072] The glass fiber reinforced nylon composite for extrusion molding of Example 1 was prepared by the following preparation method:
[0073] Weigh out 57 parts of nylon 6, 3 parts of toughening agent EPDM-MAH, 3 parts of LLDPE, 2 parts of chain extender, and 35 parts of glass fiber obtained by vacuum drying at 120°C for 4 hours, and put them into the stirring Mix for 3 minutes in the machine; add the mixed raw materials to the twin-screw extruder for processing, and add glass fiber to the third zone of the twin-screw extruder. The processing technology is as follows: the temperature of the first zone of the twin-screw extruder is 120~ 210℃, the second zone temperature is 240~300℃, the third zone temperature is 240~300℃, the fourth zone temperature is 240~300℃, the fifth zone temperature is 240~320℃, the sixth zone temperature is 240~320℃, the head temperature is 260~320℃ , The pressure is 12~18Mpa.
[0074] With reference to the weights described in Table 1...
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[0086] Examples 9~14
[0087] The glass fiber reinforced nylon composite for extrusion molding of Example 9 was prepared by the following preparation method:
[0088] Weigh 47 parts of nylon 6, 3 parts of toughening agent EPDM-MAH, 3 parts of LLDPE, 2 parts of chain extender, and 42 parts of glass fiber obtained by vacuum drying at 120°C for 4 hours, and put them into the stirring Mix for 3 minutes in the machine; add the mixed raw materials to the twin-screw extruder for processing, and add glass fiber to the third zone of the twin-screw extruder. The processing technology is as follows: the temperature of the first zone of the twin-screw extruder is 120~ 210℃, the second zone temperature is 240~300℃, the third zone temperature is 240~300℃, the fourth zone temperature is 240~300℃, the fifth zone temperature is 240~320℃, the sixth zone temperature is 240~320℃, the head temperature is 260~320℃ , The pressure is 12~18Mpa.
[0089] With reference to the amount described in Table 4, a...
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