Stress cracking-resistant PC (Polycarbonate) material and preparation method thereof
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A technology of stress cracking resistance and composite materials, which can be used in textiles and papermaking, fiber treatment, plant fibers, etc., and can solve problems such as unsatisfactory effects
Inactive Publication Date: 2019-04-23
东莞市旺品实业有限公司
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[0003] Although many different reinforced, flame-retardant and acid- and alkali-resistant PC materials have appeared on the market, they still cannot meet the special needs of the rapidly developing fields such as optoelectronics and digital tubes. Excellent shading, stress cracking resistance, acid and alkali resistance, weather resistance and impact resistance, but the existing PC materials are not ideal in application, so a new technical solution needs to be proposed to solve the above problems
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Embodiment 1
[0053] Embodiment 1: A PC material resistant to stress cracking, including components in parts by mass as shown in Table 1.
[0054] Its preparation method comprises the following steps:
[0055] Step 1, mixing PC, PE and PET with 25 (wt)% white mineral oil to obtain a premix;
[0056] Step 2, the 75 (wt)% white mineral oil and antioxidant that add are mixed evenly with the premix that step 1 obtains by proportioning;
[0057] Step 3, in the mixed material that step 2 obtains, add titanium dioxide, MBS resin, nano CaCO again according to the proportioning in Table 1 3 , modified plant fiber / PE composite material, 1250-mesh talcum powder (the mass ratio of silicon dioxide and magnesium oxide contained in talc powder is 2.5:1) and 3055 high-temperature fuchsia, mixed evenly and extruded at 260°C out, pelletized, and dried the pellets at a temperature of 120° C. for 3 hours to prepare a PC material.
Embodiment 2-6
[0058] Example 2-6: A PC material resistant to stress cracking. The difference from Example 1 is that its components and contents are different, and it includes the components in parts by mass as shown in Table 1.
[0059] The components of the mass parts of Examples 1-6 in a PC material resistant to stress cracking in Table 1
[0060]
Embodiment 7
[0061] Example 7: A PC material resistant to stress cracking, the difference from Example 1 is that 0.5 parts of a transesterification inhibitor is also used in the PC material, and the transesterification inhibitor is NaH 2 PO 4 .
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Abstract
The invention discloses a stress cracking-resistant PC (Polycarbonate) material and a preparation method thereof, and belongs to the technical field of high molecular chemical materials. The technicalpoint is that the stress cracking-resistant PC material is prepared from the following components in parts by mass: 50 to 80 parts of PC, 2 to 25 parts of titanium dioxide, 5 to 20 parts of PET (Polyethylene Terephthalate), 5 to 20 parts of PE (Polyethylene), 0.5 to 2 parts of MBS (Methyl Methacrylate Butadiene Styrene Terpolymer) resin, 0.2 to 0.5 part of diffusing oil, and 0.5 to 3 parts of other auxiliary agents. The preparation method of the stress cracking-resistant PC material comprises the following steps: 1, uniformly mixing the PC, the PE, the PET and 10 to 25 weight percent of the diffusing oil to obtain a premix; 2, adding 75 to 90 weight percent of a premix of the diffusing oil and an antioxidant, and uniformly mixing the premix with the premix which is obtained in the step 1according to the proportion; 3, adding the titanium dioxide, the MBS resin, nano-CaCO3, modified plant fibres / PE composite material, talcum powder and other toners into the mixed materials in proportion; after the materials are mixed, extruding and granulating at 260 to 300 DEG C, and drying the particles for 3 to 5 hours at the temperature of 100 to 120 DEG C to obtain the PC material. Accordingto the stress cracking-resistant PC material and the preparation method thereof, the shading property, the stress cracking resistance, the acid and alkaline resistance, the weather resistance and theimpact strength of the PC material can be improved, which is helpful to prolong the service life of the PC material.
Description
technical field [0001] The invention belongs to the technical field of polymer chemical materials, and more specifically relates to a PC material resistant to stress cracking and a preparation method thereof. Background technique [0002] PC material is the abbreviation of polycarbonate material. It is a high molecular polymer containing carbonate groups in its molecular chain. It is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic. [0003] Although many different reinforced, flame-retardant and acid- and alkali-resistant PC materials have appeared on the market, they still cannot meet the special needs of the rapidly developing fields of optoelectronics and digital tubes. Excellent shading, stress cracking resistance, acid and alkali resistance, weather resistance and impact strength, but the existing PC materials are not ideal in application, so a new technical solution needs to be proposed to solve the a...
Claims
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