Hot-melt pressure-sensitive adhesive for fan blades of wind driven generator

Abstract

The invention discloses a hot-melt pressure-sensitive adhesive for a fan blade of a wind driven generator. The hot-melt pressure-sensitive adhesive is prepared from the following components in parts by weight through a polymerization reaction: 15-30 parts of a plasticizer; 11 to 23 parts of elastomer; 30 to 60 parts of tackifying resin; 10 to 20 parts of a flame retardant; 0.1 to 1.5 parts of an antioxidant; wherein the tackifying resin adopts at least one of DCPD (dicyclopentadiene) resin and terpene-phenolic resin. By adding the flame retardant, the hot-melt pressure-sensitive adhesive has flame retardance, and by mixing the DCPD resin and the terpene-phenol resin, the stripping force of the hot-melt pressure-sensitive adhesive is improved, and the application requirements are met.

Description

Technical Field

[0001] The invention relates to a hot melt pressure-sensitive adhesive for a wind turbine blade, belonging to the field of hot melt adhesives. Background Art

[0002] Wind turbine blades require hot melt pressure sensitive adhesives, which are required to have certain flame retardancy and excellent peeling strength, and must meet the flame retardancy grade standard UL94 (V-0) test. Therefore, it is necessary to provide a hot melt pressure sensitive adhesive that can meet both flame retardancy and peeling strength. Summary of the invention

[0003] The object of the present invention is to provide a hot melt pressure sensitive adhesive for a wind turbine blade that can simultaneously meet the requirements of flame retardancy and peeling strength.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A hot melt pressure-sensitive adhesive for a wind turbine blade, wherein the hot melt pressure-sensitive adhesive is prepared by polymerization of the following components in parts by weight:

[0006] Plasticizer: 15-30 parts;

[0007] Elastomer: 11-23 parts;

[0008] Tackifying resin: 30-60 parts;

[0009] Flame retardant: 10-20 parts;

[0010] Antioxidant: 0.1-1.5 parts;

[0011] Wherein, the tackifying resin is at least one of DCPD resin and terpene phenol resin.

[0012] As a further improved technical solution of the present invention, the tackifying resin is composed of 20 to 40 parts of DCPD resin and 10 to 20 parts of terpene phenol resin.

[0013] As a further improved technical solution of the present invention, the ratio of the DCPD resin to the terpene phenol resin is 2:1 or 5:4.

[0014] As a further improved technical solution of the present invention, the elastomer is composed of 3 to 8 parts of SIS rubber and 8 to 15 parts of SBS rubber.

[0015] As a further improved technical solution of the present invention, the ratio of the SIS rubber to the SBS rubber is 1:2.

[0016] As a further improved technical solution of the present invention, the plasticizer is cycloalkane oil.

[0017] As a further improved technical solution of the present invention, the flame retardant is polyvinyl chloride.

[0018] As a further improved technical solution of the present invention, the antioxidant is a hindered phenol antioxidant.

[0019] Compared with the prior art, the beneficial effects of the present invention are: by adding a flame retardant, the hot melt pressure-sensitive adhesive is made flame retardant, and by mixing DCPD resin and terpene phenol resin, the peeling force of the hot melt pressure-sensitive adhesive is improved to meet application requirements. DETAILED DESCRIPTION

[0020] The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are merely examples of devices, products and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0021] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0022] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of explanation and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprise" include the elements appearing after "include" or "comprise" and their equivalents, which does not exclude that the elements appearing before "include" or "comprise" may also include other elements. If "several" appears in the present invention, it means two or more.

[0023] The present invention discloses a hot melt pressure sensitive adhesive for a wind turbine blade, wherein the hot melt pressure sensitive adhesive is prepared by polymerization of the following components in parts by weight:

[0024] Plasticizer: 15-30 parts;

[0025] Elastomer: 11-23 parts;

[0026] Tackifying resin: 30-60 parts;

[0027] Flame retardant: 10-20 parts;

[0028] Antioxidant: 0.1-1.5 parts;

[0029] Wherein, the tackifying resin is at least one of DCPD resin and terpene phenol resin.

[0030] The hot-melt pressure-sensitive adhesive prepared in this way has certain flame retardancy and excellent peeling force, and the compatibility between the various components is good.

[0031] In some embodiments, the tackifying resin is composed of 20 to 40 parts of DCPD resin and 10 to 20 parts of terpene phenol resin. The ratio of the DCPD resin to the terpene phenol resin is 2:1 or 5:4, and the DCPD resin is a dicyclopentadiene phenol epoxy resin. By adding the DCPD resin, the viscosity can be reduced, and by adding the terpene phenol resin, the peeling force can be increased. Among them, the DCPD resin model is Jinhai Chenguang 6100, and the terpene phenol resin model is Kemao K802.

[0032] In some embodiments, the elastomer is composed of 3 to 8 parts of SIS rubber and 8 to 15 parts of SBS rubber. The combination of SBS rubber and SIS rubber is beneficial to improving the cohesion and wettability of the hot melt pressure sensitive adhesive. Optionally, the ratio of the SIS rubber to the SBS rubber is 1:2. The SIS rubber model is Yuehua 1126 and the SBS rubber model is TSRC 3546.

[0033] In some embodiments, the plasticizer is cyclohexane oil; the flame retardant is polyvinyl chloride; the antioxidant is a hindered phenol antioxidant, wherein the hindered phenol antioxidant model is BASF 1010, and the cyclohexane oil model is Karamay 4010.

[0034] Embodiment 1

[0035] Into the experimental device, 24.6 parts by weight of plasticizer, 10 parts by weight of SBS rubber, 5 parts by weight of SIS rubber, 30 parts by weight of DCPD resin, 15 parts by weight of terpene phenol resin, 15 parts by weight of flame retardant and 0.4 parts by weight of antioxidant were added and stirred evenly.

[0036] Embodiment 2

[0037] Into the experimental device, 24.6 parts by weight of plasticizer, 10 parts by weight of SBS rubber, 5 parts by weight of SIS rubber, 25 parts by weight of DCPD resin, 20 parts by weight of terpene phenol resin, 15 parts by weight of flame retardant and 0.4 parts by weight of antioxidant were added and stirred evenly.

[0038] Comparative Example 1

[0039] Into the experimental device, 24.6 parts by weight of plasticizer, 10 parts by weight of SBS rubber, 5 parts by weight of SIS rubber, 35 parts by weight of DCPD resin, 10 parts by weight of terpene phenol resin, 15 parts by weight of flame retardant and 0.4 parts by weight of antioxidant were added and stirred evenly.

[0040] Comparative Example 2

[0041] Into the experimental device, 24.6 parts by weight of plasticizer, 10 parts by weight of SBS rubber, 5 parts by weight of SIS rubber, 35 parts by weight of DCPD resin, 15 parts by weight of terpene phenol resin, 10 parts by weight of flame retardant and 0.4 parts by weight of antioxidant were added and stirred evenly.

[0042] The hot melt pressure-sensitive adhesives prepared in Example 1, Example 2, Comparative Example 1 and Comparative Example 2 were subjected to a flame retardancy test and a peel strength test. The samples were clamped vertically on a test bench, and an open flame was used to burn the samples for 10 seconds and then the fire source was removed. The extinguishing time of the samples after the fire source was removed was recorded (no more than 30 seconds), and it was observed whether the cotton placed underneath was burned due to the dripping of the samples.

[0043] Table 1 Detection performance of different embodiments Table 1

[0044] Test items Embodiment 1 Embodiment 2 Comparative Example 1 Comparative Example 2 Combustion test (extinguishing time / s) 20 19 22 35 Peel force (N / inch) 5 7 4 4.8

[0045] It can be seen that the difference in peeling force between Comparative Example 1 and Example is due to the different terpene phenol resins added, and the difference between Comparative Example 2 and Example is due to the difference in flame retardant effect caused by the amount of flame retardant added.

[0046] The above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on the technical personnel in the relevant technical field. Although the present invention has been described in detail in this specification with reference to the above implementation modes, the ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A hot melt pressure sensitive adhesive for wind turbine blades, characterized in that: The hot melt pressure sensitive adhesive is prepared by polymerization of the following components in parts by weight: Plasticizer: 15-30 parts; Elastomer: 11-23 parts; Tackifying resin: 30-60 parts; Flame retardant: 10-20 parts; Antioxidant: 0.1-1.5 parts; Wherein, the tackifying resin is at least one of DCPD resin and terpene phenol resin.

2. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 1, characterized in that: The tackifying resin is composed of 20 to 40 parts of DCPD resin and 10 to 20 parts of terpene phenol resin.

3. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 2, characterized in that: The ratio of the DCPD resin to the terpene phenol resin is 2:1 or 5:

4.

4. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 1, characterized in that: The elastomer is composed of 3 to 8 parts of SIS rubber and 8 to 15 parts of SBS rubber.

5. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 4, characterized in that: The ratio of the SIS rubber to the SBS rubber is 1:

2.

6. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 1, characterized in that: The plasticizer is naphthenic oil.

7. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 1, characterized in that: The flame retardant is polyvinyl chloride.

8. The hot melt pressure sensitive adhesive for wind turbine blades according to claim 1, characterized in that: The antioxidant is a hindered phenol antioxidant.