Preparation method of flame-retardant toughened plastic material
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A plastic material and toughening technology, applied in the field of plastics, to achieve the effects of good toughness, improved toughening effect and excellent flame retardant performance
Inactive Publication Date: 2016-09-07
SUZHOU YAKE PLASTIC RUBBER CO LTD
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Problems solved by technology
[0003] The technical problem mainly solved by the present invention is to provide a preparation method of a flame-retardant and toughened plastic material, which can solve the above-mentioned shortcomings of the existing plastic materials for smart meter casings
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Embodiment 1
[0022] A flame-retardant and toughened plastic material, the formulation of which comprises the following components in parts by weight:
[0023] PC 80 copies;
[0024] 10 parts of reinforcing fiber, the reinforcing fiber is a mixture of non-alkali chopped glass fiber and non-alkali long glass fiber with a mass ratio of 2:1 after the surface is treated with a silane coupling agent, wherein the alkali-free chopped glass fiber The length is 2-5mm, and the aspect ratio is 6-8; the length of alkali-free long glass fiber is 30-50mm, and the aspect ratio is 50-70;
[0025] 20 parts of a composite flame retardant, which is a mixture of a silicone flame retardant and an intumescent flame retardant in a mass ratio of 1:1, wherein the silicone flame retardant is polysiloxane; the intumescent flame retardant is A mixture of boric acid, pentaerythritol and urea in a mass ratio of 2:6:1;
[0026] 5 parts of lubricants are pentaerythritol stearate;
[0027] 15 parts of toughening modifie...
Embodiment 2
[0038] A flame-retardant and toughened plastic material, the formulation of which comprises the following components in parts by weight:
[0039] PC 90 copies;
[0040] 30 parts of reinforcing fiber, the reinforcing fiber is a mixture of non-alkali chopped glass fiber and non-alkali long glass fiber with a mass ratio of 3:1 after the surface is treated with a silane coupling agent, wherein the alkali-free chopped glass fiber The length is 2-5mm, and the aspect ratio is 6-8; the length of alkali-free long glass fiber is 30-50mm, and the aspect ratio is 50-70;
[0041] 35 parts of composite flame retardant, which is a mixture of organosilicon flame retardant and intumescent flame retardant in a mass ratio of 2:1, wherein the organosilicon flame retardant is polysiloxane; the intumescent flame retardant is A mixture of boric acid, pentaerythritol and urea in a mass ratio of 3:8:3;
[0042] 10 parts of lubricants are pentaerythritol stearate;
[0043] 20 parts of toughening mod...
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Abstract
The invention discloses a preparation method of a flame-retardant toughened plastic material. The preparation method comprises the following steps: (1) carrying out raw material treatment; (2) preparing a flame retardant master batch; (3) preparing a toughening master batch; (4) mixing the materials; (5) carrying out extrusion forming; and (6) carrying out injection molding. The preparation method is simple to operate and easy to implement. The PC resin (polycarbonate) in the formula is firstly utilized to prepare the flame-retardant master batch and toughening master batch, thereby effectively enhancing the compatibility between the PC resin and the other materials and enhancing the flame-retardant effect and toughening effect. The obtained plastic material has the advantages of high strength, favorable toughness and excellent flame retardancy, and does not generate molten drops. The plastic material is in a halogen-free flame-retardant mode, and thus, can satisfy the requirements for environment protection. The plastic material has the characteristics of low cost and excellent comprehensive properties, and thus, has high market competitiveness.
Description
technical field [0001] The invention relates to the field of plastics, in particular to a method for preparing a flame-retardant and toughened plastic material. Background technique [0002] Polycarbonate (PC) has outstanding impact properties, transparency, dimensional stability, excellent mechanical properties and electrical properties, high glass transition temperature (140 ° C ~ 150 ° C), heat distortion temperature (132 ° C ~ 138 °C), and a wide temperature range (-60 °C ~ 120 °C) are widely used in electrical and electronic, construction, packaging, medical equipment, optical instruments, transportation and other fields. Polycarbonate plastics are increasingly used in smart meter housings. At present, the polycarbonate plastics used for smart meter casings are basically imported materials, the price is relatively high, and they are not suitable for use in the domestic market, and they are halogen flame-retardant systems, which cannot meet the requirements of halogen-f...
Claims
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Application Information
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