Polyvinyl chloride foam and preparation method thereof

A technology of polyvinyl chloride foam and polyvinyl chloride resin, which is applied in the field of polyvinyl chloride foam and its preparation, can solve the problems such as the decline of PVC foam mechanical properties, achieve the reduction of pore size, high thermal stability, and ensure the uniformity of pore size Effect

Active Publication Date: 2021-09-14
东营瑞致新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing PVC foam cannot have high strength, high thermal stability and flame retardancy at the same time, and the addition of related additives will lead to a decrease in the mechanical properties of PVC foam. Therefore, it is necessary to explore a new type of PVC foam , to achieve a relative balance and stability among the various properties

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
  • Polyvinyl chloride foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The polyvinyl chloride foam described in the present embodiment 1 is composed of the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 75 parts of isocyanate, 10 parts of blowing agent, 38 parts of acid anhydride, 11 parts of epoxy compound, 5 parts of modified silicone oil, 6.5 parts of plasticizer, 0.4 part of antioxidant, 5 parts of stabilizer, 7.5 parts of filler and 2.0 parts of flame retardant; the modified silicone oil is a mixture of amino silicone oil and phenolic hydroxyl modified silicone oil .

[0036] in:

[0037] The modified silicone oil is a mixture of amino silicone oil and phenolic hydroxyl modified silicone oil in a mass ratio of 1:1.

[0038] The polyvinyl chloride resin is composed of two resins with similar K values, and the PVC-SG7 type resin and PVC-SG8 type resin are selected, and the mixing mass ratio of PVC-SG8 type resin and PVC-SG7 type resin is 0.6 .

[0039] Described isocyanate is dicyclohexylmethane di...

Embodiment 2

[0057] The polyvinyl chloride foam described in this embodiment 2 consists of the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 70 parts of isocyanate, 8 parts of blowing agent, 35 parts of acid anhydride, 12 parts of epoxy compound, 4 parts of modified silicone oil, 8 parts of plasticizer, 0.3 part of antioxidant, 4 parts of stabilizer, 7 parts of filler and 1.5 parts of flame retardant; the modified silicone oil is mercapto modified silicone oil and alcohol hydroxyl modified silicone oil mixture.

[0058] in:

[0059] The modified silicone oil is a mixture of mercapto-modified silicone oil and alcohol-hydroxyl-modified silicone oil in a mass ratio of 1:1.

[0060] The polyvinyl chloride resin is composed of two resins with similar K values, and the PVC-SG7 type resin and PVC-SG8 type resin are selected, and the mixing mass ratio of PVC-SG8 type resin and PVC-SG7 type resin is 0.2 .

[0061] Described isocyanate is hexamethylene diisocy...

Embodiment 3

[0079] The polyvinyl chloride foam described in the present embodiment 3 is composed of the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 73 parts of isocyanate, 9 parts of blowing agent, 40 parts of acid anhydride, 10 parts of epoxy compound, 3 parts of modified silicone oil, 5 parts of plasticizer, 0.5 part of antioxidant, 5 parts of stabilizer, 8 parts of filler and 2.5 parts of flame retardant; the modified silicone oil is mercapto-modified silicone oil and phenolic hydroxyl modified silicone oil mixture.

[0080] in:

[0081] The modified silicone oil is a mixture of amino silicone oil and phenolic hydroxyl modified silicone oil in a mass ratio of 1:1.

[0082] The polyvinyl chloride resin is composed of two resins with similar K values, and the PVC-SG7 type resin and PVC-SG8 type resin are selected, and the mixing mass ratio of PVC-SG8 type resin and PVC-SG7 type resin is 1 .

[0083] The isocyanate is carbodiimide modified dipheny...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of PVC (polyvinyl chloride) materials, and particularly relates to polyvinyl chloride foam and a preparation method thereof. The polyvinyl chloride foam is prepared from the following raw materials: polyvinyl chloride resin, isocyanate, a foaming agent, acid anhydride, an epoxy compound, modified silicone oil, a plasticizer, an antioxidant, a stabilizer, filler and a flame retardant, wherein the modified silicone oil is a mixture of any two of sulfydryl modified silicone oil, amino silicone oil or hydroxyl modified silicone oil, and the hydroxyl modified silicone oil is phenolic hydroxyl modified silicone oil or alcoholic hydroxyl modified silicone oil. According to the polyvinyl chloride foam disclosed by the invention, the isocyanate, the acid anhydride and the epoxy compound are subjected to cross-linking reaction, so that the mechanical property of the prepared PVC foam is fundamentally ensured; and the flame retardant is a mixture of polydimethylsiloxane and antimonous oxide, and the polydimethylsiloxane and the antimonous oxide have a synergistic effect, so that the flame retardance of the prepared PVC foam is ensured.

Description

technical field [0001] The invention belongs to the technical field of PVC materials, and in particular relates to a polyvinyl chloride foam and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) foam is made of polyvinyl chloride resin as the main body, adding foaming agent and other additives. It has excellent comprehensive properties such as heat insulation and sound insulation. It is widely used in structural components such as aircraft, automobiles, computers, and vehicle shells. body and other fields. [0003] The components of rigid polyvinyl chloride crosslinked foam mainly include polyvinyl chloride resin, blowing agent (such as azobisisobutyronitrile and azodicarbonamide), isocyanate (such as toluene diisocyanate, carbodiimide- Uretonimine modified 4,4'-diphenylmethane diisocyanate) and anhydrides (such as maleic anhydride, phthalic anhydride). The preparation method is as follows: first mix the solid material and the liquid mate...

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 & AuthorityApplications(China)
IPC IPC(8): C08L27/06C08L83/08C08L83/04C08K3/22C08K3/34C08K5/29C08K5/1539C08K5/1515C08K5/053C08J9/10
CPCC08J9/103C08J9/106C08J9/0061C08J9/0066C08J9/0028C08J9/0023C08J9/0095C08J2203/04C08J2203/18C08J2327/06C08J2483/08C08J2483/04C08K3/2279C08K3/34C08K2003/2227C08K5/29C08K5/1539C08K5/1515C08K5/053
Inventor张成
Owner东营瑞致新材料有限公司