Hydrolysis-resistant polyamide composite and preparation method thereof
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A composite material and polyamide technology, which is applied in the field of hydrolysis-resistant polyamide composite materials and its preparation, can solve the problems of impact strength and tensile strength decline of hydrolysis-resistant materials, and achieve improved hydrolysis resistance, high hydrolysis resistance, and mechanical The effect of excellent strength
Pending Publication Date: 2016-08-24
NANJING DELLON ENG PLASTICS
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Abstract
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Problems solved by technology
[0003] The invention mainly adds a new type of engineering plastic additive to solve the problem that the impact strength and tensile strength of hydrolysis-resistant materials are greatly reduced
Method used
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Examples
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Embodiment 1
[0014] formula:
[0015] Injection grade PA66 resin 60%
[0016] POK resin 5%
[0017] Roving for reinforced thermoplastics 33%
[0018] Hydrolysis resistance agent 0.8%
[0019] Compound antioxidant 0.3%
[0020] Lubricant 1%
[0021] Step 1, first prepare composite antioxidant: 1010 and 168 are prepared in a ratio of 1:1;
[0022] Step 2: Weigh injection-grade PA66 resin A66, POK and grafted compatibilizer in parts by weight and add them to a high-speed mixer, heat to 100°C and stir for 8-10 minutes, and the speed of the high-speed mixer is 600-900 rpm Divide, mix evenly;
[0023] Step 3, weigh and mix the hydrolysis-resistant agent, antioxidant and lubricant according to parts by weight, pour them into the mixer and stir with the uniformly mixed mixture in step 2 for 10 minutes, and mix well;
[0024] Step 4: Put the mixed liquid obtained in Step 3 into a twin-screw extruder, introduce the glass fiber from the glass fiber port, fully plasticize and melt, extrude from...
Embodiment 2
[0026] formula:
[0027] Injection grade PA66 resin 58%
[0028] POK resin 7%
[0029] Roving for reinforced thermoplastics 33%
[0030] Hydrolysis resistance agent 0.8%
[0031] Compound antioxidant 0.3%
[0032] Lubricant 1%
[0033] Preparation is the same as in Example 1.
Embodiment 3
[0035] formula:
[0036] Injection grade PA66 resin 56%
[0037] POK resin 7%
[0038] Roving for reinforced thermoplastics 33%
[0039] Hydrolysis Resistant 0
[0040] Compound antioxidant 0.3%
[0041] Lubricant 1%
[0042] Preparation is the same as in Example 1.
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Abstract
The invention discloses a hydrolysis-resistant polyamide composite and a preparation method thereof. The composite is prepared from, by weight, 60-70 parts of injection molding grade PA66 resin, 5-10 parts of POK resin, 3-5 parts of grafting type compatilizer, 27-33 parts of thermoplastic plastic roving, 0.5-1 part of hydrolysis-resistant agent, 0-1 part of complex antioxidant and 0-1 part of lubricant. By weight, the injection molding type PA66 resin A66, the POK resin and the grafting type compatilizer are weighed firstly and added into a high-speed mixer to be mixed to be uniform; by weight, the hydrolysis-resistant agent, the antioxidant and the lubricant are weighed, mixed and then poured into a mixer, and the mixture and the mixture obtained after uniform mixing are stirred together and fully mixed to be uniform; final uniformly-mixed liquid is put in a two-screw extruder to be extruded and then subjected to injection molding through an injection molding machine, and the composite is obtained. The hydrolysis resistance of the composite can be improved, the mechanical performance of the composite is excellent, and the service life of products is greatly prolonged.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a hydrolysis-resistant polyamide composite material and a preparation method thereof. Background technique [0002] Polyamide is the base resin with the largest output, the most variety, the widest range of uses, and excellent comprehensive performance among the five general-purpose engineering plastics. However, due to the presence of amino groups in the nylon macromolecular chain, its water absorption is relatively large, which limits its use in some special environments. In recent years, domestic and foreign companies have successively developed some hydrolysis-resistant agents, which can obviously improve the hydrolysis resistance of polyamide materials, but to a certain extent deteriorate the mechanical properties of polyamide materials; such as: the tensile properties of materials Tensile strength, impact performance, etc. have dropped significantly; the present invention u...
Claims
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Application Information
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