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A heat-resistant and highly transparent cpvc composition

A technology of CPVC resin and composition, applied in the field of chlorinated polyvinyl chloride composition, can solve the problems of limited application, low light transmittance, limited application of heat-resistant and high-transparency CPVC, etc., and achieves high Vicat softening temperature and uniform distribution. , enhance the effect of heat resistance

Active Publication Date: 2017-08-25
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, there are few studies on heat-resistant and highly transparent CPVC materials. The main problem is that the light transmittance is low, and the highest can only reach about 57.5%, which seriously limits its application in the field of high transparency requirements; and the current high heat-resistant The highest Vicat softening temperature of transparent CPVC materials is only about 103°C, which also limits the application of heat-resistant and highly transparent CPVC in fields with high ambient temperature

Method used

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  • A heat-resistant and highly transparent cpvc composition

Examples

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Embodiment Construction

[0023] The heat-resistant and highly transparent CPVC composition of the present invention will be further described below through specific examples, wherein Example 1 is the best example.

[0024] The material proportions of Examples 1-6 and Comparative Examples 1-5 are shown in Table 1.

[0025] Table 1 Embodiment and comparative ratio proportioning (by weight)

[0026]

[0027] Preparation method, first weigh each component of each embodiment and comparative example according to the above weight parts, put the materials into a high-speed mixer at 800~1000r / min, mix and heat up to 100~120°C, at 10~ After 15 minutes, put it into a low-speed mixer and cool it down to 40° C., then discharge, and then extrude or cast to obtain a finished product.

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Abstract

A heat-resistant and highly transparent CPVC composition belongs to the technical field of chlorinated polyvinyl chloride compositions. It is characterized in that the composition in parts by weight is: 100 parts of CPVC resin, 1.5-3.0 parts of heat stabilizer, 0.5-1.5 parts of auxiliary heat stabilizer, 0.1-0.5 parts of perchlorate transparent modifier, and 0.3-1.0 parts of internal lubricant 0.8-2.0 parts of external lubricant, 1.0-4.0 parts of heat-resistant plasticizer, 0-2.0 parts of impact modifier; the chlorine content of CPVC resin is 64-70%. Mix the materials and raise the temperature to 100~120°C. After 10~15 minutes, cool to 40°C and discharge the materials for extrusion. In the present invention, a variety of additives are compounded with CPVC resin, and the perchlorate transparent modifier is used to change the complexation and electron cloud distribution in the CPVC chain, so that the light transmittance of the CPVC composition is as high as 80%, and the Vicat The softening temperature reaches above 110°C.

Description

technical field [0001] A heat-resistant and highly transparent CPVC composition belongs to the technical field of chlorinated polyvinyl chloride compositions. Background technique [0002] Chlorinated polyvinyl chloride (CPVC) resin has excellent properties such as high mechanical strength, heat resistance, weather resistance, chemical medium corrosion resistance, flame retardancy, and smoke suppression. Compared with other thermoplastic engineering plastics, the price is relatively low, so it is widely used It is used in the manufacture of various pipes, plates, profiles, sheets, injection molded parts, foam materials, anti-corrosion coatings and other products. The use of CPVC resin has been paid more and more attention by people, and the output is increasing at a rate of 15% every year. [0003] Heat-resistant and highly transparent CPVC products can be used in pipes with high ambient temperature and high transparency requirements in the fields of electrical appliances a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/24C08K13/02C08K3/24C08K5/58C08K5/15C08K5/524C08K5/101
Inventor 张学明贾小波孔秀丽李长春张强许永森肖恩琳
Owner CHINA PETROLEUM & CHEM CORP
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