A kind of halogen-free flame-retardant pc/pet alloy and preparation method thereof

A technology of alloy and phosphorus-nitrogen flame retardant, which is applied in the field of halogen-free flame-retardant PC/PET alloy and its preparation, can solve the problems of poor mechanical properties and flame-retardant properties, achieve low cost, improve mechanical properties, prevent The effect of oxidation
CN103756279BInactive Publication Date: 2016-04-06东莞市松燊塑料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
东莞市松燊塑料科技有限公司
Publication Date
2016-04-06
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to the technical field of PC / PET (polycarbonate / polyethylene terephthalate) alloy, and particularly relates to halogen-free flame retardant PC / PET alloy and a preparation method thereof. According to the preparation method, ethylene-butyl acrylate and an ethylene-acrylate-maleic anhydride terpolymer are used as compatible reagents so as to draw on advantages to make up for disadvantages and give play to a synergistic effect, so that the compatibility of the PC / PET alloy is improved, thus the mechanical property of the PC / PET alloy is improved. As a phosphorous-nitrogen fire retardant adopted in the PC / PET alloy has high stability, the forming temperature requirements can be completely satisfied, and the flame retardancy effect is excellent. According to the preparation method, phosphorous acid is added so as to prevent ester exchange of PC and PET in an alloying process. In short, the good mechanical property and the flame retardant property of the halogen-free flame retardant PC / PET alloy are realized through a perfect formula system; the preparation technology is simple and low in cost.
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Description

technical field

[0001] The invention relates to the technical field of PC / PET alloys, in particular to a halogen-free flame-retardant PC / PET alloy and a preparation method thereof. Background technique

[0002] Polyethylene terephthalate (PET) is a thermoplastic semi-crystalline engineering plastic. Due to the high rigidity of the main chain and the slow movement of the chain segments, there are disadvantages such as slow crystallization rate and low crystallization degree, which greatly limits Its application in the field of engineering plastics. Only through proper modification can its crystallization properties and mechanical strength be improved. PC has excellent transparency, mechanical strength and thermal stability, and is one of the five general-purpose engineering plastics. However, PC has disadvantages such as high melt viscosity, difficult molding and processing, and resistance to oil and solvents. Therefore, PC / PET alloy appeared.

[0003] The Chinese inventio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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