Unlock instant, AI-driven research and patent intelligence for your innovation.

High temperature resistant polyvinyl chloride modified material and preparation method

A technology for polyvinyl chloride and modified materials, which is applied in the field of high-temperature-resistant polyvinyl chloride modified materials and its preparation. It can solve the problems of product performance degradation, poor thermal stability, and high additive dosage, and achieve improved elongation at break and linear expansion. The effect of reducing the coefficient and increasing the tensile strength

Active Publication Date: 2019-08-13
浙江天原医用材料有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Before the 1960s, the production of vinyl chloride monomer was basically based on calcium carbide acetylene, because the production of calcium carbide required a large amount of electric energy and coke, and the cost was high
[0007] Although the addition of additives can make PVC easier to process, improve the quality of the product, and improve various performances, but due to the high amount of additives (for example, the amount of plasticizer is as high as 30wt% to 50wt%), long-term use is easy to cause additives Migration or even precipitation, which deteriorates the performance of the product and also causes environmental pollution
Many polyvinyl chloride materials on the market today still have disadvantages such as poor thermal stability, low heat distortion temperature, poor dimensional stability at high temperatures, mechanical strength to be improved, and hardness greatly affected by ambient temperature, which greatly affects the application of PVC materials. limit

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High temperature resistant polyvinyl chloride modified material and preparation method
  • High temperature resistant polyvinyl chloride modified material and preparation method
  • High temperature resistant polyvinyl chloride modified material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The preparation method of described modified urea-formaldehyde resin comprises the steps:

[0042] Take 56ml of 37% formaldehyde solution and put it into a 500ml three-necked flask, adjust the pH to 9.3-9.7 with 5% sodium hydroxide solution, then add 20g of urea and mix evenly, heat up to 85°C-95°C, stir for 40-50min, then lower To 25°C, add 3.8g (3-aminopropyl)triethoxysilane, 2g hydrocalumite and stir for 30min, then add 1.8g nano-silicon carbide and 2.2g graphene and mix evenly to obtain a modified urea-formaldehyde resin.

[0043] In the present invention, the acrylic is an impact-resistant modified material, purchased from Shanghai Fumao Chemical Co., Ltd., with a brand name of P-551.

[0044] In the present invention, the plasticizer is not particularly limited, and may include: phthalates, glutarates, adipate, azelaic acid esters, sebacic acid esters, Phosphates, stearates, laurates, citrates, oleates, trimellitates, epoxy vegetable oils, sulfonic acid derivativ...

Embodiment 1

[0084] Embodiment 1 provides a high temperature resistant polyvinyl chloride modified material, which at least includes the following components in parts by weight:

[0085]

[0086] The polyvinyl chloride resin is PVC-SG3, which is purchased from Jiangsu North Chlor-Alkali Group Co., Ltd.; the acrylic is purchased from Shanghai Fumao Chemical Co., Ltd., and the brand is P-551; the ethylene bisoleic acid amide is purchased from Jiangxi Wei Branch Oleochemical Co., Ltd., the brand is WK1766.

[0087] The preparation method of described modified urea-formaldehyde resin comprises the steps:

[0088] Take 56ml of 37% formaldehyde solution and put it into a 500ml three-necked flask, adjust the pH to 9.3-9.7 with 5% sodium hydroxide solution, then add 20g of urea and mix evenly, heat up to 85°C-95°C, stir for 40-50min, then lower To 25°C, add 3.8g (3-aminopropyl)triethoxysilane, 2g hydrocalumite and stir for 30min, then add 1.8g nano-silicon carbide and 2.2g graphene and mix eve...

Embodiment 2

[0092] Embodiment 2 provides a high temperature resistant polyvinyl chloride modified material, which at least includes the following components in parts by weight:

[0093]

[0094] The polyvinyl chloride resin is PVC-SG3, which is purchased from Jiangsu North Chlor-Alkali Group Co., Ltd.; the acrylic is purchased from Shanghai Fumao Chemical Co., Ltd., and the brand is P-551; the ethylene bisoleic acid amide is purchased from Jiangxi Wei Branch Oleochemical Co., Ltd., the brand is WK1766.

[0095] The preparation method of described modified urea-formaldehyde resin comprises the steps:

[0096] Take 56ml of 37% formaldehyde solution and put it into a 500ml three-necked flask, adjust the pH to 9.3-9.7 with 5% sodium hydroxide solution, then add 20g of urea and mix evenly, heat up to 85°C-95°C, stir for 40-50min, then lower To 25°C, add 3.8g (3-aminopropyl)triethoxysilane, 2g hydrocalumite and stir for 30min, then add 1.8g nano-silicon carbide and 2.2g graphene and mix eve...

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
Login to View More

PUM

PropertyMeasurementUnit
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of high molecular materials, in particular to a high-temperature-resistant polyvinyl chloride modified material and a preparation method. The high-temperature-resistant polyvinyl chloride modified material at least comprises, by weight, 80-110 parts of polyvinyl chloride resin, 8-25 parts of modified urea resin, 0.5-5 parts of acrylic, 40-60 parts of plasticizers, 4-10 parts of benzhydrazide derivatives, 12-35 parts of filling agents, 0.1-0.8 part of lubricant, and 0.5-3 parts of fire retardants. The degree of polymerization of the polyvinyl chloride resin is 1000-2000. The plasticizers are epoxy-plant-oil based plasticizers. The lubricant is an amides-type lubricant.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-temperature-resistant polyvinyl chloride modified material and a preparation method. [0002] technical background [0003] Polyvinyl chloride, English abbreviation PVC (Polyvinyl Chloride), is vinyl chloride monomer (VCM) in peroxide, azo compound and other initiators; or polymerized according to the mechanism of free radical polymerization under the action of light and heat made polymer. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. [0004] Polyvinyl chloride is one of the earliest plastic varieties to realize industrialization in the world, and it was industrialized in the early 1930s. Since the 1930s, for a long time, the output of polyvinyl chloride has always occupied the first place in the world's plastic consumption. In the late 1960s, polyethylene replaced polyvinyl chloride. Although polyvinyl ...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L61/32C08L33/12C08L91/00C08K13/02C08K3/26C08K3/34C08K5/20C08K5/521C08K5/13
CPCC08L27/06C08L2201/08C08L2205/035C08L61/32C08L33/12C08L91/00C08K13/02C08K3/26C08K3/34C08K3/346C08K5/20C08K5/521C08K5/13
Inventor 路中伟吴维新
Owner 浙江天原医用材料有限公司